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Wyświetlanie 1-15 z 179
Tytuł:
Kompleksowy napęd elektryczny przeznaczony dla jednostek pływających
Autorzy:
Barański, Marcin
Decner, Adam
Jarek, Tomasz
Maciążek, Marcin
Litwinowicz, Adam
Powiązania:
https://bibliotekanauki.pl/articles/31804061.pdf
Data publikacji:
2024
Wydawca:
Wydawnictwo Druk-Art
Tematy:
napęd elektryczny
napęd łodzi
elektromobilność
falownik
ładowarka
electrical drive
boat drive
electromobility
inverter
charger
Opis:
Complehensive electric drive dedicated to watercrafts
Źródło:
Napędy i Sterowanie; 2024, 26, 3; 72-78
1507-7764
Pojawia się w:
Napędy i Sterowanie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of impact of rotation speed changes on pressure pulsation of positive displacement pump
Analiza wpływu zmian prędkości obrotowej pompy wyporowej na przebieg pulsacji ciśnienia
Autorzy:
Rabsztyn, Dominik
Klarecki, Klaudiusz
Powiązania:
https://bibliotekanauki.pl/articles/38930591.pdf
Data publikacji:
2023
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
hydrostatic drive
pressure pulsation
measurement
FFT analysis
inverter drive
napęd hydrostatyczny
pulsacja ciśnienia
pomiar
analiza FFT
przemiennik częstotliwości
Opis:
The paper presents the results of experimental research on the impact of changes in the rotation speed of a hydraulic external gear pump on pressure pulsation in the discharge line for a constant value of pressure. The analyses were performed in the time domain (analysis of peak-to-peak pressure) and frequency domain (analysis of changes in frequency and pulsation amplitude). The results of experimental studies have shown that the change of the pump’s rotation speed influences changes in the course of pressure pulsation (peak-to-peak pressure and amplitude), in some cases significantly increasing the parameters mentioned. The obtained test results can be used to develop recommendations for designing hydraulic and hydrotronic systems equipped with a variable-speed pump drive.
W artykule przedstawiono wyniki badań doświadczalnych wpływu zmian prędkości obrotowej pompy zębatej na zmianę przebiegu pulsacji ciśnienia w linii tłocznej dla stałej wartości ciśnienia tłoczenia. Analizy przeprowadzono w dziedzinie czasu (analiza zmian wartości ciśnienia międzyszczytowego) oraz dziedzinie częstotliwości (analiza zmian wartości częstotliwości i amplitudy pulsacji). Otrzymane wyniki badań eksperymentalnych jednoznacznie wykazały, że zmiana prędkości obrotowej pompy wpływa na zmianę przebiegu pulsacji ciśnienia (zarówno na wartość ciśnienia międzyszczytowego, jak i amplitudę), w niektórych przypadkach znacznie zwiększając wymienione parametry. Otrzymane wyniki badań, mogą zostać wykorzystane do opracowania zaleceń dotyczących projektowania układów hydraulicznych i hydrotronicznych, wyposażonych w napęd zmiennoobrotowy pompy.
Źródło:
Journal of KONBiN; 2023, 53, 3; 1-13
1895-8281
2083-4608
Pojawia się w:
Journal of KONBiN
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Augmented speed control scheme of dual induction motors with mutual flux angle control loop
Autorzy:
Kondratenko, Dmytro
Lewicki, Arkadiusz
Łuksza, Krzysztof
Powiązania:
https://bibliotekanauki.pl/articles/27309952.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
dual-motor drive
induction motors
IMs
five-leg voltage source inverter
FLVSI
rotor angle control
sensorless control
Opis:
This paper proposes an augmented speed control scheme of dual induction motors fed by a five-leg voltage source inverter (VSI) with a common/shared-leg. An additional control loop is proposed here and based on the mutual flux angle – the difference between flux angular positions of the IMs. The main purpose of this research is to minimize the energy losses in the common inverter leg by controlling the mutual flux angle, at equal angular speeds of both motors. Simulation and experimental studies were carried out and the effectiveness of the proposed control method was proven. The PLECS software package was used for the simulation tests. The laboratory prototypewas prepared for the experimental validation. All results were provided and discussed in this paper.
Źródło:
Archives of Electrical Engineering; 2023, 72, 4; 915--930
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparative analysis of different inverters and controllers to investigate performance of electrosurgical generators under variable tissue impedance
Autorzy:
Mahdi, Ali Jafer
Abood Saber, Hussban
Mohammed Ridha, Ali
Mohammed, Mohammed Jamal
Powiązania:
https://bibliotekanauki.pl/articles/24201255.pdf
Data publikacji:
2023
Wydawca:
Centrum Badań i Innowacji Pro-Akademia
Tematy:
electrosurgical generator
tissue impedance
multilevel inverter
integer order-PID
fractional order-PID
generator elektrochirurgiczny
impedancja tkanki
falownik wielopoziomowy
regulator PID
Opis:
Electrosurgical generators (ESGs) are currently the most widely used surgical technology for clinical operations. The main disadvantage of ESGs is their output power is irregular due to the variable tissue impedance. The heat dissipation caused by the high amount of thermal energy generated leads to medical complications for both patient and surgeon. In this research, various inverter topologies and power controllers are investigated to specify the best structure that ensures best performance. The type of inverter topologies investigated are three level and five level, while the PID structures investigated are integer order (IO-PID) and fractional order (FO-PID). The simulation results indicate that FO-PID with five level inverters is better than IO-PID with three level inverters in terms of minimum heat dissipation rate and THD of the output voltage and current.
Źródło:
Acta Innovations; 2023, 48; 61--74
2300-5599
Pojawia się w:
Acta Innovations
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Current ripple reduction for finite control set model predictive control strategy of grid-tied inverter with reference current compensation
Autorzy:
Jin, Nan
Fan, Wuchuang
Fang, Jie
Wu, Jie
Shen, Yongpeng
Powiązania:
https://bibliotekanauki.pl/articles/2202542.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
cost function
current ripple reduction
finite control set model predictive control
FCS-MPC
grid-tied inverter
reference current compensation
RCC
Opis:
In the finite control set model predictive control (FCS-MPC) strategy of the grid-tied inverter, the current ripple (CR) affects the selection of optimal voltage vectors, which leads to the increase of output current ripples. In order to solve this problem, this paper proposes a CR reduction method based on reference current compensation (RCC) for the FCS-MPC strategy of grid-tied inverters. Firstly, the influence of the CR on optimal voltage vector selection is analyzed. The conventional CR prediction method is improved, which uses inverter output voltage and grid voltage to calculate current ripples based on the space state equation. It makes up for the shortcomings that the conventional CR prediction method cannot predict in some switching states. The improved CR method is more suitable for the FCS-MPC strategy. In addition, the differences between the two cost functions are compared through visual analysis. It is found that the sensitivity of the square cost function to small errors is better than that of the absolute value function. Finally, the predicted CR is used to compensate the reference current. The compensated reference current is substituted into the square cost function to reduce the CR. The experimental results show that the proposed method reduces the CR by 47.3%. The total harmonic distortion (THD) of output current is reduced from 3.86% to 2.96%.
Źródło:
Archives of Electrical Engineering; 2023, 72, 1; 5--22
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optimization of fractional order PI controller using metaheuristics algorithms applied to multilevel inverter for grid connected PV
Autorzy:
Boucheriette, Wafa
Mechgoug, Raihane
Benguesmia, Hani
Powiązania:
https://bibliotekanauki.pl/articles/11541888.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
Tematy:
MLI inverter
fractional order PI
meta-heuristic
PSO
ABC
GWO
THD
metaheurystyka
falownik
układ regulacji
Opis:
Due to its multiple advantages in industrial and grid-connected applications, Multi-Level Inverters (MLIs) have increased in popularity in recent years. To improve the efficiency of a grid-connected PV system's integrated multi-level inverter fractional order PI (FOPI) controllers are used to describe the control process. The control system is made up of three control loops based on FOPI controllers: one for controlling the intermediate circuit voltage (Vdc) and the other two for controlling the direct and quadratic currents (Id, Iq) supplied by the multilevel inverter. The proposed controller parameters (Kp, KI, λ) must be selected in order to increase the efficiency of the multi-level inverter while decreasing the total harmonic distortion (THD) of the output current of the inverter as well as voltage. For this we used three meta-heuristic algorithms (PSO, ABC, GWO). The performance of the three controllers PSO-FOPI, ABC-FOPI and GWO-FOPI controller is compared. The findings showed that GWO-FOPI performs better than the other PSO-FOPI and ABC-FOPI in accuracy and total harmonic distortion THD term. The simulation will be conducted using Matlab/Simulink.
Źródło:
Diagnostyka; 2023, 24, 3; art. no. 2023311
1641-6414
2449-5220
Pojawia się w:
Diagnostyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Research on low frequency ripple suppression technology of inverter based on model prediction
Autorzy:
Liu, Haiyang
Chen, Yiwen
Luo, Sixu
Jiang, Jiahui
Jian, Haojun
Powiązania:
https://bibliotekanauki.pl/articles/24202730.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
boost type
low frequency ripple suppression
model predictive control
single stage inverter
Opis:
The low frequency ripple of the input side current of the single-phase inverter will reduce the efficiency of the power generation system and affect the overall performance of the system. Aiming at this problem, this paper proposes a two-modal modulation method and its MPC multi-loop composite control strategy on the circuit topology of a single-stage boost inverter with a buffer unit. The control strategy achieves the balance of active power on both sides of AC and DC by controlling the stable average value of the buffer capacitor voltage, and provides a current reference for inductance current of the DC input side. At the same time, the MPC controller uses the minimum inductor current error as the cost function to control inductor current to track its reference to achieve low frequency ripple suppression of the input current. In principle, it is expounded that the inverter using the proposed control strategy has better low frequency ripple suppression effect than the multi-loop PI control strategy, and the conclusion is proved by the simulation data. Finally, an experimental device of a single-stage boost inverter using MPC multi-loop composite control strategy is designed and fabricated, and the experimental results show that the proposed research scheme has good low frequency ripple suppression effect and strong adaptability to different types of loads.
Źródło:
Archives of Electrical Engineering; 2023, 72, 2; 443--460
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Train based on virtual synchronous generator technology uninterrupted phase-separation passing study
Autorzy:
Wang, Ying
Yang, Huan
Chen, Xiaoqiang
Guo, Ya
Powiązania:
https://bibliotekanauki.pl/articles/27309940.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
energy storage railway power conditioner
single-phase inverter
uninterrupted
phase-separation passing
virtual synchronous generator
Opis:
The problem of large speed loss exists in the traditional passing through the electric phase-separation method of trains, which is more prominent when trains pass through an electric phase-separation zone in the uphill section of long ramps and may lead to the trains not passing through the phase-separation zone safely. In order to solve this problem, based on the energy storage type railroad power conditioner, a train uninterrupted phase-separation passing system based on the energy storage type railroad power conditioner is proposed. The energy storage railroad power conditioner can realize the recovery and utilization of regenerative braking energy of the electrified railroad. In the structure of the energy storage railroad power conditioner, the single-phase inverter is led from the middle DC side of the energy storage railroad power conditioner and connected to the neutral line through the LCL filter and the step-up transformer, which constitutes an uninterrupted phase separation passing system. The single-phase inverter is controlled using virtual synchronous generator technology, which allows the single-phase inverter to have external characteristics similar to those of a synchronous generator, providing support for the voltage and frequency in the neutral zone. The power required by the train to pass the electric phase-separation is provided by the power supply arm or the energy storage system, which not only improves the utilization rate of regenerative braking energy but also realizes the uninterrupted phase separation passing of the train through the control of the voltage in the neutral region.
Źródło:
Archives of Electrical Engineering; 2023, 72, 3; 755--768
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Current limiting algorithm for three-phase grid-connected inverters
Autorzy:
Tran, Tho Quang
Powiązania:
https://bibliotekanauki.pl/articles/2135740.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
current limitation
negative sequences
reactive power compensation
three-phase grid-connected inverter
unbalanced voltages
Opis:
Grid-connected inverters are commonly used in systems of renewable energy to convert this energy source into AC power with parameters suitable for connection to the grid. In the normal operating conditions, the grid-connected inverters mainly generate active power to the grid. However, when a voltage sag or voltage imbalance occurs, the grid voltage imbalance in the conventional control methods causes negative sequence components and increases the output current magnitude of inverters. The increase of current can damage power semiconductor devices. This paper presents a strategy to limit the current magnitude of inverters under unbalanced grid voltage conditions. In this strategy, a multiple-complex-coefficient filter is used to eliminate the negative sequence voltage components. This method does not require any additional hardware. A three-phase gridconnected photovoltaic inverter system using a solar array of 20 kWp is also used for the survey. The effectiveness has been validated when comparing the simulation results on Matlab/Simulink of the proposed method with those of the conventional method.
Źródło:
Archives of Electrical Engineering; 2022, 71, 3; 559--579
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Design, development and verification of a new multilevel inverter for reduced power switches
Autorzy:
Mahato, Bidyut
Ranjan, Mrinal
Pal, Pradipta Kumar
Gupta, Santosh Kumar
Mahto, Kailash Mahto
Powiązania:
https://bibliotekanauki.pl/articles/2172807.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
7-level/13-level inverter
DC-AC converters
power-electronic switches
sinusoidal PWM
Opis:
Due to recent developments in the field of high-power and medium-voltage, the multilevel inverter has raised to such an extent owing to some of its amazing facts regarding harmonic spectrum, ease in control, reduced electromagnetic interference (EMI), filterless circuit, stress on power switches, common-mode voltage. This paper well describes a novel architecture of a single-phase multilevel inverter using a lesser number of overall components, especially the power switches. The proposed topology is generalized in the structure that can generate any number of voltage steps. A 7-level structure of the proposed topology is explained and is elaborately discussed. Simulation is carried out in MATLAB and corresponding experimental results verify the existence of the proposed multilevel inverter. The real-time experimental results were presented and are well verified by the simulation results for 7-level as well for 13-level across RL-Load. The nature of load current is also indicated as per the nature of load voltage. Nevertheless, the topology is further compared with some of the recent literature and found superior in each respect.
Źródło:
Archives of Electrical Engineering; 2022, 71, 4; 1051--1063
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fault-tolerant control for three-phase three-level T-type inverters with a redundant leg
Autorzy:
Chen, Danjiang
Zheng, Liyuan
Powiązania:
https://bibliotekanauki.pl/articles/2172799.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
fault diagnosis
fault-tolerant control
open-circuit fault
phase-leg fault
redundant leg
T-type inverter
Opis:
Three-level T-type inverters have lower total harmonic distortion in output voltage, higher power density and lower voltage stress of power switches compared with conventional two-level inverters and have been widely used in applications with a wide-power range. Reliability improvement is particularly important for the T-type inverters because of the increased number of power switches and high system complexity. This paper proposes a fault-tolerant topology, which is constructed by adding a redundant leg including halfbridge switches and neutral-point switches connected between the DC bus capacitors and the DC-link midpoint of the conventional T-type inverter. In addition, an after-fault control strategy is proposed based on the results of a fault diagnosis method using bridge voltage. The fault-tolerant control of the open-circuit fault of the power switches and the phase-leg fault can both be achieved by the proposed method. Experimental results are given to verify that the proposed fault-tolerant three-level T-type inverter can output the full voltage level and power during the fault-tolerant operation based on the proposed control strategy.
Źródło:
Archives of Electrical Engineering; 2022, 71, 4; 931--948
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Model predictive direct power control of energy storage quasi-Z-source grid-connected inverter
Autorzy:
Tang, Min'an
Yang, Shangmei
Zhang, Kaiyue
Wang, Qianqian
Liu, Chenggang
Dong, Xuewang
Powiązania:
https://bibliotekanauki.pl/articles/2042769.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
quasi Z-Source
inverter
energy storage
power control
model predictive
space vector
Opis:
In order to overcome the shortcoming of large switching losses caused by variable switching frequency appears in the conventional finite control set model predictive control (FCS-MPC) algorithm, a model predictive direct power control (MP-DPC) for an energy storage quasi-Z-source inverter (ES-qZSI) is proposed. Firstly, the power prediction model of the ES-qZSI is established based on the instantaneous power theory. Then the average voltage vector in the coordinate system is optimized by the power cost function. Finally, the average voltage vector is used as the modulation signal, and the corresponding switching signal with fixed frequency is generated by the shoot-through segment space vector pulse width modulation (SVPWM) technology. The simulation results show that the ES-qZSI realizes six shoot-through actions per control cycle and achieves the constant frequency control of the system, which verifies the correctness of the proposed control strategy.
Źródło:
Archives of Electrical Engineering; 2022, 71, 1; 21-35
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modelling and simulation of sinusoidal pulse width modulation controller for solar photovoltaic inverter to minimize the switching losses and improving the system efficiency
Autorzy:
Panneerselvam, Sivaraj
Kandasamy, Karunanithi
Perumal, Chandrasekar
Powiązania:
https://bibliotekanauki.pl/articles/2135736.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
efficiency
IGBT
MOSFET
PV inverter
MATLAB/SIMULINK
SPWM controller
switching loss
Opis:
With the extinction of fossil fuels and high increase in power demand, the necessity for renewable energy power generation has increased globally. Solar PV is one such renewable energy power generation, widely used these days in the power sector. The inverters used for power conversion suffer from power losses in the switching elements. This paper aims at the detailed analysis on switching losses in these inverters and also aims at increasing the efficiency of the inverter by reducing losses. Losses in these power electronic switches vary with their types. In this analysis the most widely used semiconductor switches like the insulated gate bipolar transistor (IGBT) and metal oxide semiconductor field effect transistor (MOSFET) are compared. Also using the sinusoidal pulse width modulation (SPWM) technique, improves the system efficiency considerably. Two SPWM-based singlephase inverters with the IGBT and MOSFET are designed and simulated in a MATLAB Simulink environment. The voltage drop and, thereby, the power loss across the switches are compared and analysed. The proposed technique shows that the SPWM inverter with the IGBT has lower power loss than the SPWM inverter with the MOSFET.
Źródło:
Archives of Electrical Engineering; 2022, 71, 3; 615--626
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modified Topology and Modulation Technique for Z-Source Neutral-Point Clamped Inverter
Autorzy:
Akbari, Ehsan
Zishan, Farhad
Powiązania:
https://bibliotekanauki.pl/articles/2175930.pdf
Data publikacji:
2022
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
modulation
optimization
multilevel inverter
MZS-NPC
Opis:
The impedance network makes it possible to increase and decrease the voltage, which is not available in normal inverters (voltage and current sources).This paper presents a modified topology and modulation technique for a three-phase Modified Z-Source Neutral-Point Clamped (MZS-NPC) inverter. A modulation scheme for the proposed topology is designed based on maximum gain control method to achieve the maximum voltage gain by simple implementation and balancing the neutral point voltage of the dc link. In order to supply the desired voltage to the critical load in an islanded micro-grid, a closed-loop ac voltage controller is realized in fuel cell or photovoltaic applications based on the proposed inverter. The ability to reinforce and validity of topology operations and modulation techniques has been demonstrated by simulation. It should be noted that the simulations are implemented in MATLAB / Simulink software.
Źródło:
Power Electronics and Drives; 2022, 7, 42; 210--226
2451-0262
2543-4292
Pojawia się w:
Power Electronics and Drives
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ochrona układu izolacyjnego transformatora współpracującego z falownikami
Protection of the transformer insulation system cooperating with inverters
Autorzy:
Bernatt, Jakub
Gawron, Stanisław
Glinka, Tadeusz
Polak, Artur
Powiązania:
https://bibliotekanauki.pl/articles/2142529.pdf
Data publikacji:
2022
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Napędów i Maszyn Elektrycznych Komel
Tematy:
transformator
falownik
kondensator
warystor
transformer
inverter
capacitor
varistor
Opis:
Farmy fotowoltaiczne są łączone z siecią elektroenergetyczną poprzez falownik DC/AC i transformator. Komutacja prądu w zaworach falownika generuje w indukcyjnościach rozproszenia impulsy napięcia, które oddziałują na układ izolacyjny uzwojeń transformatora. Skuteczną ochronę izolacji uzwojeń transformatora przed przepięcia stanowią filtry tłumiące. Mogą to być kondensatory bądź warystory. Filtr w sposób znaczący poprawia warunki dielektryczne izolacji uzwojenia transformatora.
The solar farms are connected to the electricity grid through a DC / AC inverter and a transformer. The current commutation in the inverter valves generates voltage pulses in the leakage inductances, which act on the insulation system of the transformer windings. Suppression filters provide effective protection of the transformer winding insulation against overvoltage. These can be capacitors or varistors. The filter significantly improves the dielectric conditions of the transformer winding insulation.
Źródło:
Maszyny Elektryczne: zeszyty problemowe; 2022, 3, 1 (127); 41--44
0239-3646
2084-5618
Pojawia się w:
Maszyny Elektryczne: zeszyty problemowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 179

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