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Tytuł:
New technologies using renewable energy in road construction
Autorzy:
Sumorek, A.
Buczaj, M.
Powiązania:
https://bibliotekanauki.pl/articles/410956.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Oddział w Lublinie PAN
Tematy:
energy harvesting
piezoelectric
road surface
Opis:
Energy harvesting consists in the processing and storage of energy which is normally dissipated to the ambient environment. This study presents two solutions using two methods of energy generation: conversion of solar energy into electricity on the road surface and energy recovery from road surface vibrations and displacements. The description of configuration of testing stand dedicated for road surface vibrations energy harvesting has been also included. Described testing stand will make it possible to verify the possibility of application of piezoelectric transducers in road pavement in terms of occurrence of damages and the value of generated energy.
Źródło:
ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes; 2017, 6, 4; 83-91
2084-5715
Pojawia się w:
ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Some features of the construction of autonomus diagnostic systems of wind turbine generators
Autorzy:
Gizkho, Yuri
Myslovych, Mykhailo V.
Zvaritch, Valerij M.
Ostapchuk, Ludwiga B.
Gutorova, M.
Powiązania:
https://bibliotekanauki.pl/articles/2195746.pdf
Data publikacji:
2021
Wydawca:
Centrum Rzeczoznawstwa Budowlanego Sp. z o.o.
Tematy:
wind generator
Energy Harvesting technology
vibration diagnosis
generator wiatrowy
technologia Energy Harvesting
diagnostyka drgań
Opis:
The work proposes the structure of a diagnostic system, which is used to ensure the functioning of autonomous measuring transducers placed on the diagnosed parts of wind turbine generators (WT). For this purpose, the Energy Harvesting (EN) technology was used, which is designed to provide power to electronic devices in autonomous vibration measurement systems. Energy Harvesting technology converts the mechanical energy of vibrations into electrical current.
Źródło:
Modern Engineering; 2021, 2; 17--19
2450-5501
Pojawia się w:
Modern Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Energy harvesting in a magnetopiezoelastic system driven by random excitations with uniform and Gaussian distributions
Pozyskiwanie energii w piezo-magnetycznym układzie sprężystym, pobudzanym siłą stochastyczną o rozkładzie jednorodnym i normalnym
Autorzy:
Litak, G.
Borowiec, M.
Friswell, M. I.
Adhikari, S.
Powiązania:
https://bibliotekanauki.pl/articles/279267.pdf
Data publikacji:
2011
Wydawca:
Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:
energy harvesting
piezoelectric transducer
random excitation
Opis:
A simple magneto-piezoelectric system excited by random forces modelled with a double well potential is considered. System responses for different realizations of noise with uniform and Gaussian distributions are compared. The results show negligible differences in the regions of small and high noise intensity. A more noticeable difference can be seen in the intermediate region of noise just below the transition from isolated single well oscillations to coupled double wells oscillations. Variations in the mechanical displacement in this transition region indicate that the transition between these types of behaviour is broader for a uniform noise excitation. Consequently, the system excited with Gaussian noise tends more clearly to one of the different solutions (i.e. motion in a single well or in both wells) while the uniform noise case demonstrates intermittency with multiple solutions.
W pracy analizowany jest prosty układ piezo-magnetyczny, pobudzany losowo z potencjałem o dwóch studniach. Porównywane są odpowiedzi układu przy różnej realizacji szumu, o rozkładzie jednorodnym i normalnym (Gaussowskim). Wyniki przedstawiają nieznaczne różnice w obszarach niskiej i wysokiej intensywności szumu. Bardziej zauważalną różnicę można dostrzec w obszarze pośrednim szumu, tuż poniżej przejścia z oscylacji w pojedynczej studni potencjału do oscylacji w dwóch sprzężonych studniach. Zmiany pracy układu w tym obszarze sygnalizują, że obszar przejść pomiędzy takimi typami rozwiązań jest szerszy przy pobudzaniu szumem o rozkładzie jednorodnym. Natomiast układ pobudzany szumem o rozkładzie normalnym wyraźniej wykazuje tendencje do pracy w zakresie jednego z typów rozwiązań. W rezultacie przy szumie Gaussowskim układ dąży do ruchu w obrębie tylko jednej lub dwóch studni potencjału, podczas gdy w obecności szumu jednorodnego, w zachowaniu układu pojawia się zjawisko intermitencji w realizacji dwóch rozwiązań.
Źródło:
Journal of Theoretical and Applied Mechanics; 2011, 49, 3; 757-764
1429-2955
Pojawia się w:
Journal of Theoretical and Applied Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Rotating orbits of pendulum in stochastic excitation
Autorzy:
Teh, S.-H.
Woo, K.-C.
Demrdash, H.
Powiązania:
https://bibliotekanauki.pl/articles/280676.pdf
Data publikacji:
2016
Wydawca:
Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:
parametric pendulum
stochastic excitation
energy harvesting
Opis:
A method to extract energy from an excitation which is stochastic in nature is presented. The experimental rig comprises a pendulum, and a vertical excitation is provided by a solenoid. The control input assumed in the form of a direct current motor, and another motor, used in reverse, acts as a generator. The stochastic excitation has been achieved by varying the time interval between switching the RLC circuit on and off according to a random distribution. Such non-linear vertical excitations act on an oscillatory system from which a pendulum is pivoted. The Pierson-Moskowitz spectrum has been chosen as the random distribution while an inverse transform technique has been used for generation of the random excitation signal in LabVIEW environment. Moreover, a bang-bang control algorithm has been implemented to facilitate rotational motion of the pendulum. Experimental observations have been made for various noise levels of vertical excitations, and their implication on energy generation has been discussed. A positive amount of energy has been extracted for a minimal amount of the control input.
Źródło:
Journal of Theoretical and Applied Mechanics; 2016, 54, 3; 717-730
1429-2955
Pojawia się w:
Journal of Theoretical and Applied Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Linear matrix inequalities control driven for non-ideal power source energy harvesting
Autorzy:
Ferreira, D. C.
Chavarette, F. R.
Peruzzi, N. J.
Powiązania:
https://bibliotekanauki.pl/articles/281518.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:
energy harvesting
efficiency
control
non-ideal excitation
Opis:
The dynamic model of a linear energy harvester excited by a non-ideal power source is coupled to a controller to maximum vibration adjustment. Numerical analysis is taken to evaluate the energy harvested keeping the vibration optimized for the maximum interaction to the energy source using linear matrix inequalities for control driven. The dimensionless power output, actuation power and net output power is determined. As a result, it is possible to verify that the total energy harvested via exogenous vibration using the proposed controller is increased up to 65 times when in comparison to the open loop system.
Źródło:
Journal of Theoretical and Applied Mechanics; 2015, 53, 3; 605-616
1429-2955
Pojawia się w:
Journal of Theoretical and Applied Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Broadband concept of energy harvesting in beam vibrating systems for powering sensors
Autorzy:
Rysak, A
Müller, M.
Borowiec, M.
Zubrzycki, J.
Litak, G.
Godlewska-Lach, A
Wittstock, V.
Powiązania:
https://bibliotekanauki.pl/articles/957989.pdf
Data publikacji:
2014
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
piezoceramic
energy harvesting
vibration
broadband effect
impacts
Opis:
Recent demand for powering small sensors for wireless health monitoring triggered activities in the field of small size efficient energy harvesting devices. We examine energy harvesting in an aluminium beam with a piezoceramic patch subjected to kinematic harmonic excitation and impacts. Due to a mechanical stopper applied, inducing a hardening effect in the spring characteristic of the beam resonator, we observed a broader frequency range for the fairly large power output. Impact nonlinearities caused sensitivity to initial conditions and appearance of multiple solutions. The occurrence of resonant solution associated with impacts increased efficiency of the energy harvesting process.
Źródło:
Advances in Science and Technology. Research Journal; 2014, 8, 23; 62-67
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Harvesting mechanical vibrations energy using nonlinear electromagnetic minigenerators - a survey of concepts and problems
Autorzy:
Kulik, M.
Jagieła, M.
Powiązania:
https://bibliotekanauki.pl/articles/376373.pdf
Data publikacji:
2017
Wydawca:
Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
Tematy:
energy harvesting
nonlinear resonance
bistability
electromagnetic induction
Opis:
The state of knowledge in the field of conversion of energy of mechanical vibrations into electrical energy using nonlinear electromagnetic generators is presented. The principle of operation of the considered converters is based on the Faraday law. The electromotive force is induced by the relative movement of the coil or permanent magnets under impact of externally applied vibrations. In order to diminish the disadvantages of conventional generators, namely the narrow frequency bandwidth, in recent years the nonlinear systems were introduced that exhibit the nonlinear resonance phenomenon. Broadening the frequency bandwidth, in which the power generated by the system is relatively high, is realized via introduction of nonlinear force into system kinematics. Designing such systems becomes a big challenge. Based on thorough survey of recent publications as well as on own expertise in the field, the work compares a few concepts of nonlinear electromechanical minigenerators in term of their functional characteristics and design problems. Sample calculations of frequency characteristics using time- and frequency-domain models are presented.
Źródło:
Poznan University of Technology Academic Journals. Electrical Engineering; 2017, 90; 347-358
1897-0737
Pojawia się w:
Poznan University of Technology Academic Journals. Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Survey of Energy Harvesting Systems for Wireless Sensor Networks in Environmental Monitoring
Autorzy:
Dziadak, B.
Makowski, Ł.
Michalski, A.
Powiązania:
https://bibliotekanauki.pl/articles/220866.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
environmental monitoring
wireless sensor networks
energy harvesting
Opis:
Wireless Sensor Networks (WSNs) have existed for many years and had assimilated many interesting innovations. Advances in electronics, radio transceivers, processes of IC manufacturing and development of algorithms for operation of such networks now enable creating energy-efficient devices that provide practical levels of performance and a sufficient number of features. Environmental monitoring is one of the areas in which WSNs can be successfully used. At the same time this is a field where devices must either bring their own power reservoir, such as a battery, or scavenge energy locally from some natural phenomena. Improving the efficiency of energy harvesting methods reduces complexity of WSN structures. This survey is based on practical examples from the real world and provides an overview of state-of-the-art methods and techniques that are used to create energyefficient WSNs with energy harvesting.
Źródło:
Metrology and Measurement Systems; 2016, 23, 4; 495-512
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of an energy harvesting MR damper-based vibration reduction system
Autorzy:
Sapiński, B.
Rosół, M.
Węgrzynowski, M.
Powiązania:
https://bibliotekanauki.pl/articles/280877.pdf
Data publikacji:
2016
Wydawca:
Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:
MR damper
energy harvesting
vibration reduction system
control
Opis:
The paper deals with an MR damper-based vibration reduction system with energy harvesting capability. The main part of the system creates an MR damper and a power generator based on an electromagnetic transduction mechanism, which are integrated into a stand- -alone device (so called energy harvesting MR damper). The main objective of the work is to evaluate performance of the proposed vibration reduction system employed in a single DOF mechanical structure. The material outlines the design structure and characteristics of the energy harvesting MR damper, presents the vibration reduction system based on this damper and explores experimental testing of the system implemented in a single DOF mechanical structure. To demonstrate that the devised system is feasible, performance figures maps completed by experimental data are shown.
Źródło:
Journal of Theoretical and Applied Mechanics; 2016, 54, 2; 333-344
1429-2955
Pojawia się w:
Journal of Theoretical and Applied Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ideal rectifier bridge converting the harvested energy of vibrations into electric energy to power an mr damper
Autorzy:
Sapiński, Bogdan
Jastrzębski, Łukasz
Kozieł, Arkadiusz
Powiązania:
https://bibliotekanauki.pl/articles/1837924.pdf
Data publikacji:
2020
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
energy harvesting
rectifier bridge
voltage
current
MR damper
Opis:
The newly developed ideal rectifier bridge equipped with four N-type MOSFETs and two rail-to-rail operational amplifiers is a part of a typical energy harvesting conditioning circuit responsible for the rectification stage in the system of converting the energy harvested from vibrations into electrical energy to power the MR damper. The only energy loss in the bridge is caused by the voltage loss in transistors’ channels. The first sections of the work summarises the structural design of the bridge, the simulation procedure under the RL load and by sine voltage inputs with predetermined frequency and amplitude range, and benchmarks the results against those obtained for the conventional bridge based on Schottky diodes. In the second section, the PCB prototype of the bridge is analysed, and measurement data are compiled. The third section reports on the laboratory testing of the developed bridge converting the harvested energy in an MR damper-based vibration reduction system.
Źródło:
Acta Mechanica et Automatica; 2020, 14, 4; 198-205
1898-4088
2300-5319
Pojawia się w:
Acta Mechanica et Automatica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Hot Pressed K0.5Na0.5NbO3 Material for Piezoelectric Transformer for Energy Harvesting
Autorzy:
Kozielski, L.
Feliksik, K.
Wodecka-Duś, B.
Szalbot, D.
Tutu, S.
Powiązania:
https://bibliotekanauki.pl/articles/353060.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
energy harvesting
piezoelectric effect
piezoelectric transformer
piezoelectric properties
Opis:
An optimized method of vibration Energy Harvesting is based on a step-down transformer that regulates the power flow from the piezoelectric element to the desired electronic load. Taking into account parameters of the whole system, the “optimal” voltage gain the piezoelectric transformer can be determined where the harvested power is maximized for the actual level of mechanical excitation. Consequently the piezoelectric transformers can be used to boost up the conversion of mechanical strain into electrical power with considerable potential in Energy Harvesting applications. Nowadays however, the most important factor is usage of lead free material for its construction. Additional desired parameters of such ceramics include high value of piezoelectric coefficients, low dielectric losses and reasonable power density. This work for first time proposes a lead free K0.5Na0.5NbO3 (KNN) material implementation for stack type of piezoelectric transformer that is designed for load efficiency optimization of vibration energy harvester.
Źródło:
Archives of Metallurgy and Materials; 2018, 63, 3; 1275-1280
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Experimental investigation on the piezoelectric energy harvester as a self-powered vibration sensor
Autorzy:
Grzybek, D.
Micek, P.
Powiązania:
https://bibliotekanauki.pl/articles/949300.pdf
Data publikacji:
2018
Wydawca:
Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:
piezoelectric energy harvesting
piezoelectric composite
wireless sensor
vibration
Opis:
The article presents an experimental study of a system consisting of a piezoelectric energy harvesting device, Graetz bridge rectifier, capacitor, voltage comparator and radio transmitter. In the presented experimental study, the recovered electrical energy is accumulated in the capacitor and is used to send signals by a radio transmitter. In the first part, the application of piezoelectric energy harvesting devices based on the cantilever beam in wireless monitoring systems is discussed. In the second part, the mathematical model of energy conversion in the piezoelectric energy harvesting devices is presented. In the third part, the characteristics obtained during laboratory research are presented.
Źródło:
Journal of Theoretical and Applied Mechanics; 2018, 56, 3; 687-699
1429-2955
Pojawia się w:
Journal of Theoretical and Applied Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A simple and affordable powering circuit for IoT sensor nodes with energy harvesting
Autorzy:
Bouřa, Adam
Powiązania:
https://bibliotekanauki.pl/articles/1849152.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
energy harvesting
energy management
Internet of Things
wireless sensor networks
Opis:
The paper presents a circuit structure that can be used for powering an IoT (Internet of Things) sensor node and that can use energy just from its surroundings. The main advantage of the presented solution is its very low cost that allows mass applicability e.g. in the IoT smart grids and ubiquitous sensors. It is intended for energy sources that can provide enough voltage but that can provide only low currents such as piezoelectric transducers or small photovoltaic panels (PV) under indoor light conditions. The circuit is able to accumulate energy in a capacitor until a certain level and then to pass it to the load. The presented circuit exhibits similar functionality to a commercially available EH300 energy harvester (EH). The paper compares electrical properties of the presented circuit and the EH300 device, their form factors and costs. The EH circuit’s performance is tested together with an LTC3531 buck-boost DC/DC converter which can provide constant voltage for the following electronics. The paper provides guidelines for selecting an optimal capacity of the storage capacitor. The functionality of the solution presented is demonstrated in a sensor node that periodically transmits measured data to the base station using just the power from the PV panel or the piezoelectric generator. The presented harvester and powering circuit are compact part of the sensor node’s electronics but they can be also realized as an external powering module to be added to existing solutions.
Źródło:
Metrology and Measurement Systems; 2020, 27, 4; 575-587
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Magnetorheological self-powered vibration reduction system with current cut-off: experimental investigation
Autorzy:
Jastrzębski, Ł.
Sapiński, B.
Powiązania:
https://bibliotekanauki.pl/articles/386843.pdf
Data publikacji:
2018
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
MR damper
vibration
energy harvesting
current cut-off circuit
Opis:
The paper summarises the results of laboratory testing of an energy harvesting vibration reduction system based on a magnetorheological (MR) damper whose control circuit incorporates a battery of bipolar electrolytic capacitors (current cut-off circuit). It is designed to reduce the undesired effects in vibration reduction systems of this type, associated with the increasing amplitude of the sprung mass vibration under the excitation inputs whose frequency should exceed the resonance frequency of the entire system. Results have demonstrated that incorporating a current cut-off circuit results in a significant decrease of sprung mass vibration amplitudes when the frequency of acting excitation inputs is higher than the resonance frequency.
Źródło:
Acta Mechanica et Automatica; 2018, 12, 2; 96-100
1898-4088
2300-5319
Pojawia się w:
Acta Mechanica et Automatica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Power Allocation for Energy-Harvesting-based Fading Cognitive Multiple Access Channels : with or without Successive Interference Cancellation
Autorzy:
Li, Q.
Xu, D.
Powiązania:
https://bibliotekanauki.pl/articles/963855.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
cognitive radio
power allocation
multiple access channels
energy harvesting
Opis:
This paper considers a fading cognitive multiple access channel (CMAC), where multiple secondary users (SUs), who share the spectrum with a primary user (PU), transmit to a cognitive base station (CBS). A power station is assumed to harvest energy from the nature and then provide power to the SUs. We investigate the power allocation problems for such a CMAC to maximize the SU sum rate under the interference power constraint, the sum transmit power constraint and the peak transmit power constraint of each individual SU. In particular, two scenarios are considered: with successive interference cancellation (SIC) and without SIC. For the first scenario, the optimal power allocation algorithm is derived. For the second scenario, a heuristic algorithm is proposed. We show that the proposed algorithm with SIC outperforms the algorithm without SIC in terms of the SU sum rate, while the algorithm without SIC outperforms the algorithm with SIC in terms of the number of admitted SUs for a high sum transmit power limit and a low peak transmit power limit of each individual SU.
Źródło:
International Journal of Electronics and Telecommunications; 2017, 63, 1; 65-72
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Coupled static and dynamic FE analyses of a nonlinear electromechanical vibration energy harvester
Autorzy:
Kulik, M.
Jagieła, M.
Powiązania:
https://bibliotekanauki.pl/articles/97381.pdf
Data publikacji:
2016
Wydawca:
Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
Tematy:
energy harvesting
coupled structural–electromagnetic analysis
finite element analysis
Opis:
The paper presents the coupled static and dynamic mechanical–electromagnetic finite element analyses of an electromechanical vibration energy harvesting converter with permanent–magnet excitation. The system consists of a small, milliwatt power range, linear–motion generator connected to a cantilever–beam spring element. The finite element equations derived for the mechanical part of the system according to the 1–D Timoshenko beam theory are coupled strongly with those describing the 2–D distribution of magnetic field in the generator and those associated with the electric circuit. The considered electromechanical coupling allows for prediction of static and dynamic response of the system subjected to action of externally applied force. The static displacement of the moving element is computed via solution of the nonlinear system of equations and is used as an initial solution in dynamic analysis. For computation of the dynamic response of the system the time–stepping procedure based on the Crank– Nicolson discretisation schema is applied. The models are positively validated against the measurements carried out on the laboratory test–stand.
Źródło:
Computer Applications in Electrical Engineering; 2016, 14; 256-267
1508-4248
Pojawia się w:
Computer Applications in Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
High-displacement electret-based energy harvesting system for powering leadless pacemakers from heartbeats
Autorzy:
Maamer, Bilel
Jaziri, Nesrine
Said, Mohamed Hadj
Tounsi, Fares
Powiązania:
https://bibliotekanauki.pl/articles/2202554.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
electret-based system
electrostatic harvester
energy harvesting
heartbeats vibration
Opis:
In vivo biomedical devices are one of the most studied applications for vibrational energy harvesting. In this paper, we investigated a novel high-displacement device for harvesting heartbeats to power leadless implantable pacemakers. Due to the location peculiarities, certain constraints must be respected for the design of such devices. Indeed, the total dimension of the system must not exceed 5.9 mm to be usable within the leadless pacemakers and it must be able to generate accelerations lower than 0.25 m/s2 at frequencies of less than 50 Hz. The proposed design is an electrostatic system based on a square electret of dimension 4.5 mm. It is based on the Quasi-Concertina structure, which has a very low resonant frequency of 26.02 Hz and a low stiffness of 0.492 N/m, allowing it to be very useful in such an application. Using a Teflon electret charged at 1000 V, the device was able to generate an average power of 10.06 μW at a vibration rate of 0.25 m/s2 at the resonant frequency.
Źródło:
Archives of Electrical Engineering; 2023, 72, 1; 229--238
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Absorption Enhancement in Si Solar Cells by Incorporation of Metallic Nanoparticles: Improved COMSOL Numerical Study Including Quantum Corrections
Autorzy:
Kluczyk, K.
Krzemińska, Z.
Jacak, W.
Powiązania:
https://bibliotekanauki.pl/articles/1033865.pdf
Data publikacji:
2017-08
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
solar cells
solar energy harvesting
surface plasmons
metallic nanoparticles
Opis:
One of the crucial parameters affecting the solar cell efficiency is the absorption rate versus solar spectrum. Metallic nanoparticles deposited on the cell surface can mediate this process. Main mechanisms of absorption enhancement due to metallic nanoparticle plasmons were proposed: (1) the scattering of incident solar light causing increase of the optical path length inside active layer and local enhancement of the electric field; (2) near field coupling between plasmon and semiconductor and the direct generation of electron-hole pairs in the semiconductor. The field concentration effect can be described by classical electrodynamic theory, the coupling between metallic nanoparticle plasmons and band electrons in semiconductor substrate must be captured upon quantum mechanics. In this paper we took the challenge to develop fast and reliable method for calculation of device optical properties by application of COMSOL system appropriately configured to take into account these quantum effects, via the quantum modification of the dielectric function of semiconductor substrate and metallic components. The presented results indicate that the efficiency of energy transfer due to near field coupling of metallic nanoparticle plasmons with semiconductor substrate is much more effective than the absorption increase due to metallic nanoparticle plasmons scattering only.
Źródło:
Acta Physica Polonica A; 2017, 132, 2; 393-397
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Coupled dynamic FE analysis of permanent-magnet mechanical vibration energy harvesting converter
Autorzy:
Kulik, M.
Jagieła, M.
Powiązania:
https://bibliotekanauki.pl/articles/377720.pdf
Data publikacji:
2016
Wydawca:
Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
Tematy:
energy harvesting
coupled structural-electromagnetic analysis
finite element analysis
Opis:
The paper presents a coupled dynamic mechanical-electromagnetic finite element analysis of a vibration energy harvesting converter with permanent-magnet excitation. The system consists of a small, miliwatt power range, linear-motion permanent-magnet generator connected to a cantilever-beam spring element. The finite element equations derived for the mechanical part of the system according to the 1-D Timoshenko beam theory are coupled strongly with equations describing the 2-D distribution of magnetic field in the generator and those associated with the electric circuit. The time-stepping procedure based on the Crank-Nicolson discretisation schema is applied to the obtained system of differential-algebraic equations. The model is shown to provide satisfactory predictions of the system dynamic performance which is confirmed experimentally.
Źródło:
Poznan University of Technology Academic Journals. Electrical Engineering; 2016, 85; 245-254
1897-0737
Pojawia się w:
Poznan University of Technology Academic Journals. Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Generating of electricity from magnetoelectric composite with use of changes in direction of magnetic field vector
Autorzy:
Mech, R.
Powiązania:
https://bibliotekanauki.pl/articles/347476.pdf
Data publikacji:
2017
Wydawca:
Akademia Wojsk Lądowych imienia generała Tadeusza Kościuszki
Tematy:
SMART materials
Energy Harvesting
magnetostriction
active materials
Terfenol-D
Opis:
Paper shows study on the magnetoelectric composite material placed in an external magnetic field with changing magnetic field vecotr. An experimental setup for investigation of magnetoelectric properties of magnetostrictive-piezoelectric material was prepared. The hybrid structure is made of magnetostrictive composite (based on Terfenol-D) and piezoelectric material. Experimental results shown the response of prepared hybrid material to the rate of changes of direction of magnetic field vector. Investigation were mainly focused on possibility of generating of electric power from prepared material. It was found that the prepared hybrid material exhibits magnetoelectric effect in the case of work when direction of magnetic field vector was changing. This effect might be use in Energy Harvesting applications.
Źródło:
Zeszyty Naukowe / Wyższa Szkoła Oficerska Wojsk Lądowych im. gen. T. Kościuszki; 2017, 4; 283-293
1731-8157
Pojawia się w:
Zeszyty Naukowe / Wyższa Szkoła Oficerska Wojsk Lądowych im. gen. T. Kościuszki
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Low voltage integrated converter for waste heat thermoelectric harvesters
Autorzy:
Dziurdzia, P.
Mysiura, M.
Gołda, A.
Powiązania:
https://bibliotekanauki.pl/articles/221706.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
charge pump
DC-DC conversion
thermoelectric conversion
energy harvesting
Opis:
The paper deals with an application-specific integrated circuit (ASIC) facilitating voltage conversion in thermoelectric energy harvesters. The chip is intended to be used to boost up the voltage coming from a thermoelectric module to a level that is required by electronic circuits constituting wireless sensor nodes. The designed charge pump does not need any external parts for its proper operation because all the capacitors, switches and oscillator are integrated on the common silicon die. The topography of the main functional blocks and post-layout simulations of the designed integrated circuit are shown in the article.
Źródło:
Metrology and Measurement Systems; 2012, 19, 1; 159-168
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optimal Design of Piezoelectric Actuators for Shunt Damping Techniques
Autorzy:
Neubauer, M.
Powiązania:
https://bibliotekanauki.pl/articles/176597.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
piezoelectric transducer
piezoelectric shunt damping
piezoelectric energy harvesting
vibration damping
Opis:
In vibration control with piezoceramics, a high coupling of the piezoelement with the structure is desired. A high coupling improves the damping performance of passive techniques like shunt damping. The coupling can be influenced by a the material properties of the piezoceramics, but also by the placement within the structure and the size of the transducer. Detailed knowlegde about the vibration behavior of the structure is required for this. This paper presents an in-depth analysis of the optimal shape of piezoelectric elements. General results for one-dimensional, but inhomogeneos strain distribution are provided. These results are applied to the case of a longitudinal transducer and a bending bimorph. It is obtained that for maximum coupling, only a certain fracture of the volume should be made of piezoelectric material. . .
Źródło:
Archives of Acoustics; 2014, 39, 4; 615-622
0137-5075
Pojawia się w:
Archives of Acoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Energy recovery from a non-linear electromagnetic system
Autorzy:
Kęcik, K.
Powiązania:
https://bibliotekanauki.pl/articles/386921.pdf
Data publikacji:
2018
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
magnetic pseudo-levitation
energy harvesting
vibration
electromagnetic coupling
attractor coexistence
Opis:
The paper presents study of a pseudo-magnetic levitation system (pseudo-maglev) dedicated for energy harvesting. The idea rely on motion of a pseudo-levitating magnet in a coil’s terminal. The study based on real prototype harvester system, which in the pendulum dynamic vibration absorber is applied. For some parameters, the stability loss caused by the period doubling bifurcation is detected. The coexistence of two stable solutions, one of which is much better for energy harvesting is observed. The influence of the pseudo-maglev parameters on the recovered current and stability of the periodic solutions is presented in detail. The obtained results show, that the best energy recovery occurs for the high pseudo-maglev stiffness and close to the coil resistance. The amplitude’s excitation, the load resistances and the coupling coefficient strongly influence on the system’s response.
Źródło:
Acta Mechanica et Automatica; 2018, 12, 1; 11-18
1898-4088
2300-5319
Pojawia się w:
Acta Mechanica et Automatica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Badania eksperymentalne hybrydowego układu PV-TEG
Experimental Studies of Hybrid PV–Peltier Module System
Autorzy:
Matecki, D.
Powiązania:
https://bibliotekanauki.pl/articles/377246.pdf
Data publikacji:
2017
Wydawca:
Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
Tematy:
zjawisko Peltiera
zjawisko Seebecka
ogniwo fotowoltaiczne
ogniwo termoelektryczne
energy harvesting
Opis:
Niniejsza praca przedstawia wyniki badań eksperymentalnego układu składającego się z ogniwa PV oraz ogniwa termoelektrycznego. Celem badań jest sprawdzenie możliwości wykorzystania ogniwa termoelektrycznego jako odbiornika ciepła odpadowego pochodzącego z ogniwa fotowoltaicznego do wytworzenia energii elektrycznej przy jednoczesnym chłodzeniu panelu PV i wykorzystaniu tej energii do zasilenia odbiorników małej mocy w systemach autonomicznych, np. stacjach pomiarowych lub sygnalizacyjnych.
This paper presents the results of an experimental system consisting of a photovoltaic cell (PV) and thermoelectric generator (TEG). The aim of the research is the possibility of using TEG as a receiver of waste heat from the photovoltaic cell to generate electricity while cooling the PV panel and use this energy to power low–power receivers in autonomous systems, eg. measurement or signaling stations.
Źródło:
Poznan University of Technology Academic Journals. Electrical Engineering; 2017, 89; 367-372
1897-0737
Pojawia się w:
Poznan University of Technology Academic Journals. Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Characterization of nanostructured bulk cobalt triantimonide doped with tellurium and indium prepared by pulsed plasma in liquid method
Autorzy:
Zybała, R.
Schmidt, M.
Kaszyca, K.
Chmielewski, M.
Kruszewski, M. J.
Jasiński, M.
Rajska, M.
Ciupiński, Ł.
Powiązania:
https://bibliotekanauki.pl/articles/200831.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
thermoelectric materials
nanostructured materials
skutterudite
energy harvesting
spark plasma sintering
Opis:
One of the ways to decrease thermal conductivity is nano structurization. Cobalt triantimonide (CoSb3) samples with added indium or tellurium were prepared by the direct fusion technique from high purity elements. Ingots were pulverized and re-compacted to form electrodes. Then, the pulsed plasma in liquid (PPL) method was applied. All materials were consolidated using rapid spark plasma sintering (SPS). For the analysis, methods such as X-ray diffraction (XRD), scanning electron microscopy (SEM) and scanning transmission electron microscopy (STEM) with a laser flash apparatus (LFA) were used. For density measurement, the Archimedes’ method was used. Electrical conductivity was measured using a standard four-wire method. The Seebeck coefficient was calculated to form measured Seebeck voltage in the sample placed in a temperature gradient. The preparation method allowed for obtaining CoSb3 nanomaterial with significantly lower thermal conductivity (10 Wm–1K–1 for pure CoSb3 and 3 Wm–1K–1 for the nanostructured sample in room temperature (RT)). The size of crystallites (from SEM observations) in the powders prepared was about 20 nm, joined into larger agglomerates. The Seebeck coefficient, α, was about –200μVK–1 in the case of both dopants, In and Te, in microsized material and about −400 μK−1 for the nanomaterial at RT. For pure CoSb3 , α was about 150 μVK−1 and it stood at −50 μVK−1 for nanomaterial at RT. In bulk nanomaterial samples, due to a decrease in electrical conductivity and inversion of the Seebeck coefficient, there was no increase in ZT values and the ZT for the nanosized material was below 0.02 in the measured temperature range, while for microsized In-doped sample it reached maximum ZT = 0.7 in (600K).
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2020, 68, 1; 125-134
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigation of waste heat recovery for automobile application based on a thermoelectric module
Autorzy:
Buchalik, R.
Buczkowski, D.
Przybyła, G.
Nowak, G.
Powiązania:
https://bibliotekanauki.pl/articles/243601.pdf
Data publikacji:
2016
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
energy harvesting
combustion engine
heat recovery
exhaust gas
thermoelectric effect
Opis:
The article presents a brief discussion about issues of energy harvesting of waste heat generated during the operation of the SI (spark ignition) internal combustion engine (ICE). The available methods of implementation and the problems associated with them were presented. In recent years, there has been an increase in the significance of successful researches on new types of thermoelectric modules. Despite relatively low efficiency of the thermoelectric modules, a systematic growth in their interest is observed. Their application seems to be reasonable because of many advantages - mainly the simplicity. The paper contains the literature review in the subject of interest. For the purpose of this work, a test rig was designed and manufactured. The test rig consists of a single thermoelectric module and makes it possible to work in variety of operating conditions for different values of the exhaust gas flow rate and temperature. It is equipped with an automatic, servo controlled, movable element, which control direction of the exhaust gas flow and as a result changes the heat flux transferred via the thermoelectric module. This solution allows achieving the maximum power of the thermoelectric module in a wide range of ICE operating conditions and also allows adjusting operating parameters to actual working conditions of the whole system. The problems encountered during the construction of the test rig and the proposed solutions of practical implementation were described. Experimental research was conducted on a small size automobile petrol engine. The influence of electrical parameters at the output on the whole system was analysed. The results suggest that the actual thermoelectric module parameters, especially the thermal conductivity, vary from declared by the producer. Maximum achieved electric power output reached about 10 W from a single thermoelectric module (57 mm x 54 mm), which is nearly half of the declared value.
Źródło:
Journal of KONES; 2016, 23, 4; 25-32
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An Autonomous Wearable Sensor Node for Long-Term Healthcare Monitoring Powered by a Photovoltaic Energy Harvesting System
Autorzy:
Mohsen, Saeed
Zekry, Abdelhalim
Youssef, Khaled
Abouelatta, Mohamed
Powiązania:
https://bibliotekanauki.pl/articles/227109.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
energy harvesting
healthcare monitoring
wearable sensor nodes
photovoltaic
Bluetooth low energy (BLE)
Opis:
In this paper, an autonomous wearable sensor node is developed for long-term continuous healthcare monitoring. This node is used to monitor the body temperature and heart rate of a human through a mobile application. Thus, it includes a temperature sensor, a heart pulse sensor, a low-power microcontroller, and a Bluetooth low energy (BLE) module. The power supply of the node is a lithium-ion rechargeable battery, but this battery has a limited lifetime. Therefore, a photovoltaic (PV) energy harvesting system is proposed to prolong the battery lifetime of the sensor node. The PV energy harvesting system consists of a flexible photovoltaic panel, and a charging controller. This PV energy harvesting system is practically tested outdoor under lighting intensity of 1000 W/m². Experimentally, the overall power consumption of the node is 4.97 mW and its lifetime about 246 hours in active-sleep mode. Finally, the experimental results demonstrate long-term and sustainable operation for the wearable sensor node.
Źródło:
International Journal of Electronics and Telecommunications; 2020, 66, 2; 267-272
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wpływ położenia i kształtu elementu piezoelektrycznego na pozyskiwaną energię elektryczną
Influence of the piezoelectric element position and shape on energy harvesting
Autorzy:
Nowak, R.
Pietrzakowski, M.
Powiązania:
https://bibliotekanauki.pl/articles/404174.pdf
Data publikacji:
2012
Wydawca:
Polskie Towarzystwo Symulacji Komputerowej
Tematy:
piezoelektryk
belka
MES
pozyskiwanie energii elektrycznej
piezoelectric
beam
FEM
energy harvesting
Opis:
W niniejszej pracy skupiono się na zbadaniu wpływu kształtu i położenia generatora piezoelektrycznego na pozyskiwane napięcie. Rozważono układ mechaniczny w postaci belki wysięgnikowej z przyklejonym przetwornikiem piezoelektrycznym, spolaryzowanym poprzecznie. Zastosowano generator w kształcie prostokątnym i trójkątnym. Na podstawie obliczeń analitycznych dokonano wyboru możliwie efektywnego generatora. Wyznaczono charakterystyki amplitudowo-częstotliwościowe wytwarzanego napięcia w przypadku drgań belki w zakresie pierwszej i drugiej częstotliwości rezonansowej. Do obliczeń porównawczych, przeprowadzonych metodą elementów skończonych (MES), wybrano generator prostokątny, rozłożony na dwóch trzecich długości powierzchni belki. Wykazano zadowalającą zgodność wyników uzyskanych metodą analityczną i MES.
This study focuses on examining the influence of the shape and position of the piezoelectric generator on the harvested voltage. The considered mechanical system is the cantilever beam with the glued transversely polarized piezoelectric transducer. Both rectangular and triangular generators were used. Using analytical calculations, the generator's shape was selected as efficiently as possible. Amplitude-frequency characteristics were determined in the first and second resonant frequency range. The rectangular generator covering two-thirds of the upper surface of the beam was selected for comparative calculations. The results of both methods were compared with acceptable agreement.
Źródło:
Symulacja w Badaniach i Rozwoju; 2012, 3, 3; 131-140
2081-6154
Pojawia się w:
Symulacja w Badaniach i Rozwoju
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Koncepcja autonomicznego układu do dezynfekcji wody
Concept of autonomic water disinfection unit
Autorzy:
Ferlin, T.
Galias, P.
Galla, S.
Powiązania:
https://bibliotekanauki.pl/articles/267470.pdf
Data publikacji:
2016
Wydawca:
Politechnika Gdańska. Wydział Elektrotechniki i Automatyki
Tematy:
odzyskiwanie energii
mikro-wytwornica
przepływ wody
energy obtaining
energy harvesting
microgenerator
water flow
Opis:
W artykule poruszono temat pozyskania energii z nietypowych źródeł. Przedstawiono wyniki prac nad prototypem układu wykorzystującego przepływ strumienia wody jako źródło energii. Zakładano pozyskanie strumienia zarówno z naturalnych cieków wodnych jak i z domowych instalacji wodnych. W pracy sprawdzano koncepcję zastosowania odzyskanej energii do zasilania diod UV – C mających na celu zmniejszenie zagrożenia mikrobiologicznego dla ludzi i zwierząt.
The paper presents the results of work on the prototype of the circuit for harvesting energy from not typical source and presents the concept of its use. The source of energy for proposed solution is a flow of water. It was assumed that the water flow in domestic water installation and natural waterways could be used. In addition the proposition of acquired energy application was proposed tested the possibility to use the energy to power a UV – C LED. Emitted UV – C light could be used to reduce microbiological contamination of water. The system has the ability to be used mainly on farms using the outer waterway as a water source or optionally could be installed in high quality requirements water distribution networks.
Źródło:
Zeszyty Naukowe Wydziału Elektrotechniki i Automatyki Politechniki Gdańskiej; 2016, 51; 49-53
1425-5766
2353-1290
Pojawia się w:
Zeszyty Naukowe Wydziału Elektrotechniki i Automatyki Politechniki Gdańskiej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Przegląd metod pomiaru małych energii dla oceny układów „energy-harvesting” i systemów mikromocowych
Review of measurement methods of small energy for the assesment of "energy-harvesting" circuits and micropower systems
Autorzy:
Palmowski, D.
Lentka, G.
Hojka, A.
Powiązania:
https://bibliotekanauki.pl/articles/268995.pdf
Data publikacji:
2016
Wydawca:
Politechnika Gdańska. Wydział Elektrotechniki i Automatyki
Tematy:
pomiar małych energii
system mikromocowy
measurement of small energy
energy harvesting
micropower system
Opis:
W artykule omówiono trzy metody pomiaru małych energii dla oceny układów zasilania typu „energy-harvesting” i systemów mikromocowych. Opisano klasyczną metodę techniczną, jak i estymację energii zarówno poprzez pomiar ładunku oraz wykorzystanie równoważenia ładunku. Niezależnie od metody pomiaru, zwrócono uwagę na specyficzny, impulsowy i nieregularny charakter poboru energii przez systemy mikromocowe oraz podobny impulsowy charakter energii wytwarzanej przez przetworniki energy harwester (EH).
The article is concern on the issues of measurement methods of small energy low-power devices which collecting the Energy avilable in the enviroment. The main difficulty in constructing such devices is an estimation of energy demand. The average power consumption the low-power system is typically calculated in microwatts. Accurate measurement of the energy consumed by a typical micropower system is problematic - measuring device must have a large dynamic range. It is assumed that the measured currents can be varied by at least two orders of magnitude. There must be a wide band width due to the fact that a large current is consumed in a very short time (pulse). Similar requirements determine the measurement of the Energy supplied from alternative sources. Electrical energy available at the output of converter usually appears irregularly in pulses of varying intensity of current and different voltages. For this reasons technical method and use of current-voltage converters are useless. The another method assumes sampling the signals of supply voltage and current and performing multiplication and integration numerically, but it have a number of drawbacks. Charge counting method gives more reliable results than the voltage and current measurement, even using high-speed A/D converters. Unfortunately, it is problematic to use the circuit in this form to measure the amount of energy generated by the EH source, because the measured current is flowing out of the system. The concept of measurement based on the principle of operation on the A/D converters to the load balancing is a bit more complicated in hardware implementation. The meter built according to the Figure 6 allows the measurement of the flow charge with an accuracy not worse than 2.5% on the highest resolution, and not worse than 1.2% for a resolution of 5 thousand plots. This type of device may measure the charge flowing in one direction, for example from the source to the battery.
Źródło:
Zeszyty Naukowe Wydziału Elektrotechniki i Automatyki Politechniki Gdańskiej; 2016, 51; 139-142
1425-5766
2353-1290
Pojawia się w:
Zeszyty Naukowe Wydziału Elektrotechniki i Automatyki Politechniki Gdańskiej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Smart Agriculture Monitoring using Energy Harvesting Internet of Things (EH-IoT)
Autorzy:
Sharma, Himanshu
Haque, Ahteshamul
Jaffery, Zainul Abdin
Powiązania:
https://bibliotekanauki.pl/articles/1075545.pdf
Data publikacji:
2019
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Agriculture monitoring
Internet of Things
Solar Energy Harvesting
Wireless Sensor Networks
Opis:
The internet of Things (IoT) are now a days being used for the smart agriculture monitoring and control applications. Small wireless sensor networks (WSN) are used as IoT nodes in agriculture monitoring which is very much similar to those used in Industries, Process control, Building Automation and Security Systems. In this paper, we propose IoT sensor nodes which are powered by solar energy are used for monitoring and control of agriculture fields. The monitoring and control in agriculture fileds include operations like crops managements, crops harvesting, water supply control, animal control, pesticide distribution, humidity and temperature measurement applications.
Źródło:
World Scientific News; 2019, 121; 17-21
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Estimation and Compensation of IQ Imbalance in SWIPT System
Autorzy:
Nair, Ajin R.
Kirthiga, S.
Jayakumar, M.
Powiązania:
https://bibliotekanauki.pl/articles/2055272.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
SWIPT
power splitting
iq imbalance
energy harvesting
hardware impairments
blind compensation
Opis:
Although there are many articulations of SWIPT architecture implementations, the hardware impairment aspect involved in the SWIPT architecture system is not given much attention. This paper evaluates the performance of SWIPT PS Receiver architecture in the presence of IQ imbalance hardware impairment with 16-QAM transmitter and AWGN channel. The parameters SNR, BER is evaluated in the presence of amplitude, phase imbalance, and PS factor at the SWIPT receiver side. Further, the IQ imbalance is estimated and compensated using a blind compensation algorithm. The system achieved a maximum BER of 10−7 in the presence of amplitude and phase imbalance of 0.2 and 1.6 respectively.
Źródło:
International Journal of Electronics and Telecommunications; 2021, 67, 4; 679--684
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Experimental investigations on energy harvesting from mechanical vibrations of buildings using macro fiber composite
Eksperymentalne badania nad pozyskiwaniem energii z drgań mechanicznych budynków z wykorzystaniem kompozytu macro fiber
Autorzy:
Grzybek, D.
Micek, P.
Powiązania:
https://bibliotekanauki.pl/articles/368957.pdf
Data publikacji:
2016
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
energy harvesting
piezoelectric composite
monitoring
vibrations
pozyskiwanie energii
kompozyt piezoelektryczny
wibracje
Opis:
The monitoring of a structure (e.g., a building) enables safe utilization of such a structure. A large number of sensors that measure selected parameters are often required in applied monitoring systems. Cables or batteries are used to power such sensors. This leads to an increase in utilization costs, as the cables have to be spatially located in a monitored building structure, or batteries have to be changed periodically. The use of the natural properties of piezoelectric materials that convert mechanical energy into electńcal energy in places where sensors are mounted is a promising field of wireless monitońng system development. This article presents the results of an experimental study for an energy harvesting system using a piezoelectric composite - the Macro Fiber Composite (MFC). The device used for energy harvesting has a beam structure that was achieved by gluing steel and MFC together. In laboratory research, the characteristics of generated currents and electńcal power were obtained for several values of vibration amplitude. The most important conclusion was that the resonant frequency of a piezoelectric beam generator should be established (by the selection of proper dimension or land mass) both for the vibration frequency of the monitored mechanical structure and the vibration amplitude of this structure.
Monitorowanie stanu konstrukcji np. budowlanej pozwala na jej bezpieczną eksploatację. Często w stosowanych w tym celu systemach monitorowania wymagane jest zastosowanie znacznej liczby czujników, mierzących wybrane parametry. Do zasilania tych czujników stosuje się kable lub baterie, co prowadzi do większych kosztów eksploatacji konstrukcji budowlanej, gdyż w przypadku kabli muszą być one umieszczone w monitorowanej konstrukcji, a w przypadku baterii muszą być one wymieniane co pewien czas. Wykorzystanie właściwości materiałów piezoelektrycznych do konwersji energii mechanicznej na elektryczną w miejscach zamontowania czujników jest obiecującym kierunkiem rozwoju bezprzewodowych systemów monitoringu. W artykule przedstawiono wyniki badań eksperymentalnych układu pozyskiwania energii, w którym wykorzystano kompozyt piezoelektryczny Macro Fiber Composite (MFC). Urządzenie do pozyskiwania energii miało konstrukcję belkową otrzymaną przez sklejenie stali i MFC. W badaniach laboratoryjnych uzyskano charakterystyki generowanego natężenia prądu i mocy elektrycznej przy zmianach wartości amplitudy drgań. Na podstawie badań m.in. wykazano, że częstotliwość rezonansowa piezoelektrycznego generatora o konstrukcji belkowej powinna być ustalana (przez odpowiedni dobór wymiarów lub/i masy) zarówno na podstawie najczęściej występującej częstotliwości drgań monitorowanej konstrukcji mechanicznej, jak i na podstawie najczęściej występujących amplitud drgań tej konstrukcji.
Źródło:
Mechanics and Control; 2016, 35, 1; 1-5
2083-6759
2300-7079
Pojawia się w:
Mechanics and Control
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
System zdalnego monitorowania parametrów wibroakustycznych z wykorzystaniem odnawialnych źródeł energii
Vibroacoustic parameters remote measurement system with the use of renewable energy sources
Autorzy:
Morzyński, L.
Powiązania:
https://bibliotekanauki.pl/articles/179276.pdf
Data publikacji:
2015
Wydawca:
Centralny Instytut Ochrony Pracy
Tematy:
odnawialne źródła energii
energy harvesting
wibroakustyka
hałas
drgania mechaniczne
monitoring
renevable energy
vibroacoustic
vibration
Opis:
Odnawialne źródła energii są coraz powszechniej stosowane we współczesnej technice do zasilania urządzeń elektronicznych. Zastosowanie odnawialnych źródeł energii pozwala na ograniczenie kosztów eksploatacyjnych urządzeń, wpływa pozytywnie na środowisko naturalne, a ponadto zapewnia konstruowanym urządzeniom większą autonomię. W artykule przedstawiono koncepcje systemu umożliwiającego monitoring parametrów wibroakustycznych środowiska pracy, w skład którego wchodzą urządzenia pomiarowe zasilane przy wykorzystaniu odnawialnych źródeł energii Przedstawiono i omówiono różne rodzaje odnawialnych źródeł energii oraz możliwości ich zastosowania w zaproponowanym systemie pomiarowym.
Renewable energy is increasingly used m technology to power electronic devices. Renewable energy reduces maintenance costs, has a positive impact on the natural environment and provides more autonomy to devices. This article presents the concept of a system for monitoring vibroacoustic parameters of the working environment, with noise and vibration measuring devices powered with renewable energy. It discusses different kinds of sources of renewable energy and their possible use in the proposed monitoring system.
Źródło:
Bezpieczeństwo Pracy : nauka i praktyka; 2015, 11; 13-17
0137-7043
Pojawia się w:
Bezpieczeństwo Pracy : nauka i praktyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wpływ temperatury na efektywność pracy krzemowych fotomodułów w środowisku południowo-wschodniej Polski
Effect of temperature on the efficiency of silicon photomodules under the south-east Poland conditions
Autorzy:
Tomaszewski, R.
Olchowik, J.
Adamczyk, J.
Powiązania:
https://bibliotekanauki.pl/articles/311458.pdf
Data publikacji:
2011
Wydawca:
Instytut Naukowo-Wydawniczy "SPATIUM"
Tematy:
fotowoltaika
konwersja fotowoltaiczna
pozyskiwanie energii
krzem
photovoltaics
photovoltaic conversion
energy harvesting
silicon
Opis:
Obecnie poszukuje się czystych ekologicznie, a jednocześnie odnawialnych źródeł energii. Jedną z ich form jest konwersja fotowoltaiczna z wykorzystaniem fotomodułów. Jednak o możliwości efektywnego wykorzystania tej formy pozyskiwania energii decydują warunki klimatyczne, takie jak: nasłonecznienie, usłonecznienie, ilość opadów, jak również i skład atmosfery ziemskiej. Polska, a w szczególności rejon południowo-wschodni odznacza się dobrymi parametrami do zastosowania tej formy pozyskiwania energii zarówno z wykorzystaniem konwerterów fototermicznych jak i fotowoltaicznych. W artykule przedstawiono analizę wpływu temperatury na wydajność konwersji fotowoltaicznej w warunkach południowo-wschodniej Polski.
Currently there are looking for a clean and at the same time renewable energy sources . One of them forms is photovoltaic conversion using PV modules. However, the possibility of effective use of this form of energy production determine the climatic conditions such as sunlight, sunshine, rainfall, as well as the composition of Earth's atmosphere. Poland, in particular the region of south-east of Poland is characterized by good parameters to use this form of energy production from both the converters - using solar photothermal collectors and photovoltaic modules. This paper presents an analysis of the influence of temperature on photovoltaic conversion efficiency in conditions of Southeastern Poland.
Źródło:
Autobusy : technika, eksploatacja, systemy transportowe; 2011, 12, 10; 431-437
1509-5878
2450-7725
Pojawia się w:
Autobusy : technika, eksploatacja, systemy transportowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of the Magnetoelectric Sensors Usability for the Energy Harvesting
Autorzy:
Kuczynski, Karol
Bilski, Adrian
Bilski, Piotr
Szymanski, Jerzy
Powiązania:
https://bibliotekanauki.pl/articles/1844465.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
magnetoelectric sensor
current sensor
magnetostriction
amorphous metal ribbon
piezoelectric materials
energy harvesting
Opis:
The paper presents the analysis of the magnetic sensor’s applicability to the energy harvesting operations. The general scheme and technical advancement of the energy extraction from the electric vehicle (such as a tram or a train) is presented. The proposed methodology of applying the magnetic sensor to the energy harvesting is provided. The experimental scheme for the sensor characteristics and measurement results is discussed. Conclusions and future prospects regarding the practical implementation of the energy harvesting system are provided.
Źródło:
International Journal of Electronics and Telecommunications; 2020, 66, 4; 787-792
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An Experimental Investigation into Improving the Performance of Thermoelectric Generators
Autorzy:
Alahmer, Ali
Khalid, Mohammad Bani
Beithou, Nabil
Borowski, Gabriel
Alsaqoor, Sameh
Alhendi, H.
Powiązania:
https://bibliotekanauki.pl/articles/2068454.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
thermoelectric generator
liquid evaporation
TEG performance
enhancing power generation
waste energy harvesting
Opis:
Low-temperature heat sources have become increasingly popular in recent years, particularly for energy generation. The majority of thermal devices in the market (including devices using solar energy, geothermal energy, waste energy, and so on) transform heat into electricity indirectly, requiring mechanical work before producing power. Through the Seebeck effect, the technology that employs a thermoelectric generator (TEG) may directly transform heat energy into electricity. The TEG technology provides several advantages, including compactness, quietness, and the absence of moving components. TEGs have a low thermal and electrical efficiency, which is one of their main drawbacks. Therefore, the performance of a thermoelectric generator is improved by employing liquid evaporation heat transfer in this manuscript. The performance of the thermoelectric was examined experimentally and compared to the liquid evaporation mode under varied heat flux values and different modes of heat transfer in terms of free and forced convection with and without fins. The experimental results revealed that when compared to free convection without fins, adopting forced liquid evaporation convection would improve TEG voltage variation by 435.9%.
Źródło:
Journal of Ecological Engineering; 2022, 23, 3; 100--108
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The use of lost energy for supplying the dispersed networks of sensors
Wykorzystanie energii odpadowej do zasilania rozproszonych sieci czujników
Autorzy:
Jasiulek, D.
Powiązania:
https://bibliotekanauki.pl/articles/257119.pdf
Data publikacji:
2015
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Technologii Eksploatacji - Państwowy Instytut Badawczy
Tematy:
coal mining
energy harvesting
piezoelectric energy harvester
self-powered sensor
górnictwo
przetwornik piezoelektryczny
czujnik samozasilający
Opis:
The possible use of self-supplying sensors, which use energy, lost during physical phenomena, for monitoring the selected parameters of mining machines operating in areas threatened by methane and/or coal dust explosion hazard, is presented. Self-supplying sensors are more and more often used in intelligent control systems. They use in their supply systems phenomena such as heat flow, the energy of vibrations, or light. The analysis showed that this technology could be used in automatics and diagnostics systems of mining machines and equipment.
W artykule zaprezentowano możliwości wykorzystania czujników samoza-silających, które wykorzystują energię traconą w trakcie zjawisk fizycznych, do monitorowania wybranych parametrów maszyn górniczych działających w obszarach zagrożonych wybuchem metanu i/lub pyłu węglowego. Czujniki samozasilające są coraz częściej stosowane w inteligentnych systemach sterowania, wykorzystują do zasilania takie zjawiska jak przepływ ciepła, energię drgań lub światło. Przeprowadzona analiza wykazała, że taka technologia może być stosowana w układach automatyki i diagnostyki maszyn i urządzeń górniczych.
Źródło:
Problemy Eksploatacji; 2015, 2; 51-59
1232-9312
Pojawia się w:
Problemy Eksploatacji
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Design and Performance Analysis of Peltier & Piezoelectric Human Energy Harvesting Hybrid Model for WBAN Application
Autorzy:
Dhillon, Hardeep Singh
Chawla, Paras
Powiązania:
https://bibliotekanauki.pl/articles/227297.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
wireless
energy harvesting
body node
body node coordinator (BNC)
piezo-electric harvester
peltier
Opis:
Wireless body area network (WBAN) has evolved from Wireless personal area network (WPAN), a prominent area of research with vast applications in last decade. In WBAN, various wirelessly interconnected body node (BN) are implanted in or around the human body. Also due to advancement in technology a miniature low power device/BN is developed. The main challenge in WBAN body node is to maintain finite size of battery as well as to increase its capacity. Hence this issue can be resolved by using energy harvesting. Generally researchers have used piezoelectric, electromagnetic or solar harvester only. But, in this research energy harvesting using the hybrid optimization of Piezoelectric and Peltier sensors by controlling on-off timing of body nodes is introduced. A hybrid optimized algorithm is developed using MATLAB 2015b platform and extensive simulation is performed considering four different human gestures (relaxing, walking, running and fast running) which in turn improves overall Quality of Service (QoS) including average (packet loss, end to end delay, throughput) and overall detection efficiency.
Źródło:
International Journal of Electronics and Telecommunications; 2019, 65, 3; 435-440
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of the energy harvestable from an airless tire equipped with piezoelectric bimorphs on the lamellar spokes
Autorzy:
Suciu, C. V.
Koyanagi, K.
Powiązania:
https://bibliotekanauki.pl/articles/307907.pdf
Data publikacji:
2013
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
airless tire
bending and buckling
energy harvesting
generated electrical power
piezoelectric bimorph
spoke
Opis:
In this work, one evaluates the electrical power generated by an airless tire equipped with piezoelectric bimorphs on both lateral surfaces of the radially distributed lamellar spokes. Such sheet-like spokes are hinged both toward the wheel drum at the inner annular band, and toward the wheel tread at the outer annular band. Since the hinged spokes are able to transmit tension forces but unable to transmit compression forces, bending and buckling of the spokes occur in the region of contact between the tire and the road. Models for the rolling friction of the airless tire, for the bending and buckling deformation of the spokes, and for the electrical power generated by the airless tire are suggested. Variation of the curvature radii and bending deformations for the spokes in the region of contact with the road are illustrated for various values of the rolling friction coefficient and spoke length. Then, variation of the generated electrical power versus the length of contact is obtained for various travel speeds of the vehicle. One observes that the generated electrical power increases at augmentation of the rolling friction coefficient, spoke length and travel speed. Although the obtained electrical power for the proposed harvesting system is relatively modest, it is not depending on the road roughness, i.e. harvesting becomes possible even on smooth roads, such as highway surfaces.
Źródło:
Journal of Telecommunications and Information Technology; 2013, 4; 79-84
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Experimental validation of equivalent circuit modelling of the piezo-stripe harvester attached to the sfsf rectangular plate
Autorzy:
Koszewnik, Andrzej
Powiązania:
https://bibliotekanauki.pl/articles/386747.pdf
Data publikacji:
2020
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
aluminium plate
piezo - harvester
energy harvesting system
modal analysis
Equivalent Circuit Model
ECM
Opis:
Plate-like structures with attached piezo-patch elements are widely used in marine, aerospace and civil infrastructure applications to power small devices with low power demand or used for monitoring of vibration structures. In order to assess the feasibility of an energy harvesting system to generate power output from a harvester, an accurate electromechanical model of the piezo-patch harvester attached to a 2D structure in modal coordinates is required. Taking into account this fact, this study is focused on the analysis of the piezoharvester orientations on the SFSF (Simply Supported-Free-Simply Supported-Free) plate undergoing forced dynamic excitation. The results obtained from the numerical analysis of a smart structure led to determining quasi-optimal piezo-harvester location on the structure, and next, to determining a multi-mode representation of the equivalent circuit model. The experimental set-up carried out on the lab stand properly verified the parameters of the ECM model. Finally, the proposed approach can be used for the structural health monitoring of vibration of some 2D mechanical structures like the front wall of a dishwasher.
Źródło:
Acta Mechanica et Automatica; 2020, 14, 1; 8-15
1898-4088
2300-5319
Pojawia się w:
Acta Mechanica et Automatica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On Secrecy Performance for Energy-Harvesting Multi-Antenna Relaying Networks with a Dual-Use Source
Autorzy:
Zhang, J.
Pan, G.
Xie, Y.
Powiązania:
https://bibliotekanauki.pl/articles/226136.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
decode and forward
dual-use
energy harvesting
maximal ratio combining
secrecy outage probability
Opis:
This paper studies the secrecy performance of an energy-harvesting relaying system in the presence of a dualuse source node and an eavesdropper. Specifically, the source has dual roles in the dual-hop communication: 1) to transmit confidential information in the first hop; 2) to generate jamming signal to interfere the eavesdropper in the second hop. Moreover, the multi-antenna relay deploys a power-splitting harvesting scheme to coordinate the information receiving and energy harvesting, and adopts maximal ratio combining technique to process the multiple copies of signals. Considering decode-andforward protocol and transmit antenna selection scheme, we derive an analytical expression for secrecy outage probability, and perform Monte Carlo simulation to validate the analysis. Analytical results show that the SOP performance with the dualuse source node can be effectively improved when the relaydestination channel does not have absolute advantage over the relay-eavesdropper channel.
Źródło:
International Journal of Electronics and Telecommunications; 2018, 64, 1; 33-38
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Minimization of critical flow velocity of aeroelastic energy harvester via delayed feedback control
Autorzy:
Sarbinowski, Filip
Starosta, Roman
Powiązania:
https://bibliotekanauki.pl/articles/2146571.pdf
Data publikacji:
2020
Wydawca:
Politechnika Poznańska. Instytut Mechaniki Stosowanej
Tematy:
energy harvesting
delayed feedback control
flow-induced vibration
harvesting energii
sprzężenie zwrotne z opóźnieniem
drgania wzbudzone przepływem
Opis:
The paper describes the procedure of modelling and optimization of the aeroelastic energy harvester from the point of view of their operation at very low flow velocities. Using analytical solutions of models of different device variants, the relationships between their efficiency and flow velocity were presented. By way of analytical considerations, the conditions for high performance operation of the device have been demonstrated, indicating at the same time the difficulty in maintaining it at low operation velocities. As a solution to the problem, the application of external delayed feedback control was proposed and its effectiveness was demonstrated.
Źródło:
Vibrations in Physical Systems; 2020, 31, 2; art. no. 2020225
0860-6897
Pojawia się w:
Vibrations in Physical Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Electromechanical portable energy harvesting device: analysis and experimental tests
Przenośne urządzenie elektromagnetyczne do pozyskiwania energii: analiza oraz badania eksperymentalne
Autorzy:
Gieras, J. F.
Oh, J. H.
Huzmezan, M.
Powiązania:
https://bibliotekanauki.pl/articles/194132.pdf
Data publikacji:
2008
Wydawca:
Politechnika Bydgoska im. Jana i Jędrzeja Śniadeckich. Wydawnictwo PB
Tematy:
pozyskiwanie energii
generator wibracyjny
elektromechaniczny
magnesy trwałe
energy harvesting
vibration generator
electromechanical
permanent magnets
Opis:
This paper presents the design analysis and performance of an energy harvesting prototype device operating on the principle of electromechanical energy conver- sion. The input vibration kinetic energy is converted into the output electrical energy. A spring - mass system with moving permanent magnet (PM) is mechanically excited by external vibrations. The voltage is induced in a stationary coil that is embraced by PM poles. When the coil is loaded with an external impedance, an electric current proportional to the induced EMF arises in the external circuit. Fundamental equations for performance calculations have been derived on the basis of elementary beam theory and circuit analysis. A prototype has been built and the calculation results have been validated with the test results.
Artykuł omawia projektowanie, analizę oraz parametry urządzenia prototypowego do pozyskiwania energii, pracującego na zasadzie elektromechanicznego przetwarzania energii. Energia kinetyczna wejściowa w postaci energii wibracji mechanicznych jest przetwarzana na energię elektryczną (na zaciskach wyjściowych). Układ sprężyna - masa z ruchomym magnesem trwałym jest pobudzany mechanicznie przez wibracje zewnętrzne. Napięcie elektryczne jest indukowane w cewce stacjonarnej, na skutek wibracji biegunów magnesów trwałych. Kiedy cewka zostanie obciążona przez impedancję zewnętrzną, w obwodzie zewnętrznym popłynie prąd elektryczny proporcjonalny do wzniecanej SEM w cewce. Równania podstawowe do obliczania parametrów i charakterystyk zostały wyprowadzone na podstawie teorii elementarnej belki podpartej, analizy obwodowej oraz analizy polowej. Obliczenia teoretyczne zostały zweryfikowane pomiarami na zbudowanym prototypie.
Źródło:
Zeszyty Naukowe. Elektrotechnika / Uniwersytet Technologiczno-Przyrodniczy w Bydgoszczy; 2008, 13; 17-36
0209-0570
Pojawia się w:
Zeszyty Naukowe. Elektrotechnika / Uniwersytet Technologiczno-Przyrodniczy w Bydgoszczy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Impact-based piezoelectric energy harvesting system excited from diesel engine suspension
Autorzy:
Caban, Jacek
Litak, Grzegorz
Ambrożkiewicz, Bartłomiej
Gardyński, Leszek
Stączek, Paweł
Wolszczak, Piotr
Powiązania:
https://bibliotekanauki.pl/articles/118147.pdf
Data publikacji:
2020
Wydawca:
Polskie Towarzystwo Promocji Wiedzy
Tematy:
vibration energy harvesting
impact analysis
diesel engine
zbieranie energii drgań
analiza uderzeń
silnik wysokoprężny
Opis:
Vibration energy harvesting systems are using real ambient sources of vibration excitation. In our paper, we study the dynamical voltage response of the piezoelectric vibrational energy harvesting system (PVEHs) with a mechanical resonator possessing an amplitude limiter. The PVEHs consist of the cantilever beam with a piezoelectric patch. The proposed system was subjected to the inertial excitation from the engine suspension. Impacts of the beam resonator are useful to increase of system’s frequency transition band. The suitable simulations of the resonator and piezoelectric transducer are performed by using measured signal from the engine suspension. Voltage outputs of linear (without amplitude limiter) and nonlinear harvesters were compared indicating better efficiency of the nonlinear design.
Źródło:
Applied Computer Science; 2020, 16, 3; 16-29
1895-3735
Pojawia się w:
Applied Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Electrical interface for a self-powered MR damper-based vibration reduction system
Autorzy:
Jastrzębski, Ł.
Sapiński, B.
Powiązania:
https://bibliotekanauki.pl/articles/386633.pdf
Data publikacji:
2016
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
vibration
electrical interface
MR damper
energy harvesting
wibracja
tłumik MR
symulacja komputerowa
redukcja wibracji
Opis:
The study investigates the behaviour of an electrical interface incorporated in a MR damper-based vibration reduction system powered with energy recovered from vibration. The interface, comprising the R, L and C elements, is connected in between the coil in an electromagnetic electric generator and the control coil in the MR damper and its function is to convert the output voltage from the generator. The interface model was formulated and computer simulations were performed to find out how the parameters of the interface should influence the frequency responses of the vibration reduction system.
Źródło:
Acta Mechanica et Automatica; 2016, 10, 3; 165-172
1898-4088
2300-5319
Pojawia się w:
Acta Mechanica et Automatica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optimization of the service strategy in a queueing system with energy harvesting and customers’ impatience
Autorzy:
Dudin, A.
Lee, M. H.
Dudin, S.
Powiązania:
https://bibliotekanauki.pl/articles/331226.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
energy harvesting
threshold strategy
optimization
Markovian arrival process
uzyskiwanie energii
optymalizacja
Markowski proces zgłoszeń
Opis:
A single-server queueing system with an infinite buffer is considered. The service of a customer is possible only in the presence of at least one unit of energy, and during the service the number of available units decreases by one. New units of energy arrive in the system at random instants of time if the finite buffer for maintenance of energy is not full. Customers are impatient and leave the system without service after a random amount of waiting time. Such a queueing system describes, e.g., the operation of a sensor node which harvests energy necessary for information transmission from the environment. Aiming to minimize the loss of customers due to their impatience (and maximize the throughput of the system), a new strategy of control by providing service is proposed. This strategy suggests that service temporarily stops if the number of customers or units of energy in the system becomes zero. The server is switched off (is in sleep mode) for some time. This time finishes (the server wakes up) if both the number of customers in the buffer and the number of energy units reach some fixed threshold values or when the number of energy units reaches some threshold value and there are customers in the buffer. Arrival flows of customers and energy units are assumed to be described by an independent Markovian arrival process. The service time has a phase-type distribution. The system behavior is described by a multi-dimensional Markov chain. The generator of this Markov chain is derived. The ergodicity condition is presented. Expressions for key performance measures are given. Numerical results illustrating the dependence of a customer’s loss probability on the thresholds defining the discipline of waking up the server are provided. The importance of the account of correlation in arrival processes is numerically illustrated.
Źródło:
International Journal of Applied Mathematics and Computer Science; 2016, 26, 2; 367-378
1641-876X
2083-8492
Pojawia się w:
International Journal of Applied Mathematics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigation of Electrical Properties for Cantilever-Based Piezoelectric Energy Harvester
Autorzy:
Ali, Ahsan
Pasha, Riffat Asim
Sheeraz, Muhammad Abdullah
Butt, Zubair
Elahi, Hassan
Khan, Afzaal Ahmed
Powiązania:
https://bibliotekanauki.pl/articles/102729.pdf
Data publikacji:
2019
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
piezoelectric
micro-electromechanical systems
energy harvesting
microsystems
bimorph
systemy mikroelektromechaniczne
zbieranie energii
mikrosystemy
bimorf
Opis:
In the present era, the renewable sources of energy, e.g., piezoelectric materials are in great demand. They play a vital role in the field of micro-electromechanical systems, e.g., sensors and actuators. The cantilever-based piezoelectric energy harvesters are very popular because of their high performance and utilization. In this research-work, an energy harvester model based on a cantilever beam with bimorph PZT-5A, having a substrate layer of structural steel, was presented. The proposed energy scavenging system, designed in COMSOL Multiphysics, was applied to analyze the electrical output as a function of excitation frequencies, load resistances and accelerations. Analytical modeling was employed to measure the output voltage and power under pre-defined conditions of acceleration and load resistance. Experimentation was also performed to determine the relationship between independent and output parameters. Energy harvester is capable of producing the maximum power of 1.16 mW at a resonant frequency of 71 Hz under 1g acceleration, having load resistance of 12 kΩ. It was observed that acceleration and output power are directly proportional to each other. Moreover, the investigation conveys that the experimental results are in good agreement with the numerical results. The maximum error obtained between the experimental and numerical investigation was found to equal 4.3%.
Źródło:
Advances in Science and Technology. Research Journal; 2019, 13, 3; 76-85
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Budynki wysokie – w dążeniu do zeroenergetyczności
Autorzy:
Błaszczyński, T. Z.
Gwozdowski, B.
Powiązania:
https://bibliotekanauki.pl/articles/129176.pdf
Data publikacji:
2016
Wydawca:
PWB MEDIA Zdziebłowski
Tematy:
budynki wysokie
zeroenergetyczność
pozyskiwanie energii
źródła odnawialne
high-rise buildings
zero-energy
energy harvesting
renewable sources
Opis:
Idea budownictwa zeroenergetycznego bardzo szybko znalazła zastosowanie w realizacji bardziej prestiżowych inwestycji. Celem stało się zaprojektowanie budynków o wielkiej powierzchni użytkowej w pełni wykorzystujących technologie pozyskiwania energii ze źródeł odnawialnych. Zastosowanie takich rozwiązań w budynkach wysokich było oczywistą konsekwencją postępu technologicznego.
The idea of building zero-energy very quickly found application in prestigious projects. The aim was to design a building of large usable area that fully exploits technologies for energy generation from renewable sources. The use of such solutions in high-rise buildings was obvious consequence of technological progress.
Źródło:
Builder; 2016, 20, 5; 28-31
1896-0642
Pojawia się w:
Builder
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Numerical investigations on the dynamic behaviour of a 2-DOF airfoil with application in energy harvesting system
Autorzy:
Haniszewski, Tomasz
Gąska, Damian
Margielewicz, Jerzy
Opasiak, Tadeusz
Powiązania:
https://bibliotekanauki.pl/articles/27311332.pdf
Data publikacji:
2023
Wydawca:
Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:
airfoil
simulation
energy harvesting
piezo element
microcontroller
panel
symulacja
pozyskiwanie energii
element piezoelektryczny
mikrokontroler
Opis:
This article presents the basic airfoil model with two degrees of freedom - the semi-rigid model, where its forced vibrations were considered, and the exciting force is the aerodynamic force, including its periodic changes, that is, gusts. Since the phenomenological model under study has a coupled form, its versions after decoupling are presented, which has an impact on the results of the final research. The airfoil model presented in this way was shown from the application side in the system of a simple energy harvester based on a deformable beam with piezoelectric elements. The result of the simulation tests is a preliminary analysis of the possibility of using the airfoil as a vibration generator for the energy harvesting system. Along with the application of the mechanical part, a numerical simulation of the electrical part was also implemented, related to the transformation of the voltage generated by piezoelectric elements into a constant voltage signal with a connected receiver with power consumption similar to the Atmega microcontroller with battery charging.
Źródło:
Zeszyty Naukowe. Transport / Politechnika Śląska; 2023, 118; 77--91
0209-3324
2450-1549
Pojawia się w:
Zeszyty Naukowe. Transport / Politechnika Śląska
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-50 z 92

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