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Wyświetlanie 1-15 z 51
Tytuł:
A closed-loop power controller model of series-resonant-inverter-fitted induction heating system
Autorzy:
Pal, P.
Roy, D.
Datta, A.
Sadhu, P. K.
Banerjee, A.
Powiązania:
https://bibliotekanauki.pl/articles/141721.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
induction heating
power controller
PID
series resonant inverter
MATLAB
Opis:
This paper presents a mathematical model of a power controller for a high-frequency induction heating system based on a modified half-bridge series resonant inverter. The output real power is precise over the heating coil, and this real power is processed as a feedback signal that contends a closed-loop topology with a proportional-integral-derivative controller. This technique enables both control of the closed-loop power and determination of the stability of the high-frequency inverter. Unlike the topologies of existing power controllers, the proposed topology enables direct control of the real power of the high-frequency inverter.
Źródło:
Archives of Electrical Engineering; 2016, 65, 4; 827-841
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Computer modelling of lighting power controller operation disturbed by 1.2/50 μs voltage lightning stroke
Autorzy:
Typańska, D.
Machczyński, W.
Powiązania:
https://bibliotekanauki.pl/articles/376687.pdf
Data publikacji:
2018
Wydawca:
Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
Tematy:
surge impulse
computer simulations
lighting installation
power regulator
Opis:
The article presents a computer simulation of a lighting installation disturbed by lightning surge. Modelled impulse voltage generator 1.2/50 μs, system with coupling/ decoupling system and a power semiconductor regulator used in light engineering have been described. The aim of the work was to investigate the influence of the surge impulse on the current flowing through the installation.
Źródło:
Poznan University of Technology Academic Journals. Electrical Engineering; 2018, 93; 159-168
1897-0737
Pojawia się w:
Poznan University of Technology Academic Journals. Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Multi-channel power controller for MR dampers of small-scale
Wielokanałowy sterownik mocy dla tłumików MR małej skali
Autorzy:
Rosół, M.
Sapiński, B.
Powiązania:
https://bibliotekanauki.pl/articles/157140.pdf
Data publikacji:
2010
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
sterownik mocy
tłumik MR
sterowanie drganiami
power controller
MR damper
vibration control
Opis:
The study deals with the multi-channel power controller engineered by authors for magnetorheological (MR) dampers of small-scale. The paper covers: structure, technical specification, laboratory testing of the device in the analog and digital mode and its testing by applying to MR dampers' control in a vehicle suspension model.
W artykule przedstawiono opracowany przez autorów, wielokanałowy sterownik mocy dla tłumików MR małej skali (wytwarzających silę do kilku kN). Opisano budowę oraz podano parametry techniczne sterownika. Omówiono wyniki badań laboratoryjnych sterownika pracującego w trybie analogowym i cyfrowym. Porównano własności statyczne i dynamiczne sterownika w obu trybach, ze szczególnym uwzględnieniem granicznych wartości prądów i napięć na wyjściu sterownika oraz odpowiedzi czasowych na skokowe zmiany sygnałów sterujących (analiza czasów ustalania prądu w cewce sterującej tłumika i siły generowanej przez tłumik MR). Na podstawie wyników badań eksperymentalnych pokazano wady i zalety obu trybów pracy sterownika do sterowania tłumikiem MR, uwzględniając zastosowanie przełączających algorytmów sterowania. Opracowany sterownik wykorzystano do badań płaskiego modelu zawieszenia pojazdu o dwu- i trzech stopniach swobody wyposażonego w tłumiki MR. W badaniach wykorzystano dwa środowiska sprzętowo-programowe: kartę wejść-wyjść AC/CA typu RT-DAC4/PCI i pakiet MATLAB/Simulink z przybornikami RTW/RTWT oraz mikrokontroler Motorola typu MPC 555 z przybornikiem Embedded Target for MotorolaŽ MPC555 pakietu MATLAB/Simulink.
Źródło:
Pomiary Automatyka Kontrola; 2010, R. 56, nr 3, 3; 244-250
0032-4140
Pojawia się w:
Pomiary Automatyka Kontrola
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Parallel PBIL applied to power system controller design
Autorzy:
Folly, K.
Powiązania:
https://bibliotekanauki.pl/articles/91747.pdf
Data publikacji:
2013
Wydawca:
Społeczna Akademia Nauk w Łodzi. Polskie Towarzystwo Sieci Neuronowych
Tematy:
Population-Based Incremental Learning algorithm
PBIL algorithm
Opis:
Population-Based Incremental Learning (PBIL) algorithm is a combination of evolutionary optimization and competitive learning derived from artificial neural networks. PBIL has recently received increasing attention in various engineering fields due to its effectiveness, easy implementation and robustness. Despite these strengths, it was reported in the last few years that PBIL suffers from issues of loss of diversity in the population. To deal with this shortcoming, this paper uses parallel PBIL based on multi-population. In parallel PBIL, two populations are used where both probability vectors (PVs) are initialized to 0.5. It is believed that by introducing two populations, the diversity in the population can be increased and better results can be obtained. The approach is applied to power system controller design. Simulations results show that the parallel PBIL approach performs better than the standard PBIL and is as effective as another diversity increasing PBIL called adaptive PBIL.
Źródło:
Journal of Artificial Intelligence and Soft Computing Research; 2013, 3, 3; 215-223
2083-2567
2449-6499
Pojawia się w:
Journal of Artificial Intelligence and Soft Computing Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optimal location of interline power flow controller in a power system network using ABC algorithm
Autorzy:
Sreejith, S.
Psimon, S.
Selvan, M.P.
Powiązania:
https://bibliotekanauki.pl/articles/141232.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
IPFC
power injection model
power flow control
ABC algorithm
cost minimization
Opis:
This paper proposes a methodology based on installation cost for locating the optimal position of interline power flow controller (IPFC) in a power system network. Here both conventional and non conventional optimization tools such as LR and ABC are applied. This methodology is formulated mathematically based on installation cost of the FACTS device and active power generation cost. The capability of IPFC to control the real and reactive power simultaneously in multiple transmission lines is exploited here. Apart from locating the optimal position of IPFC, this algorithm is used to find the optimal dispatch of the generating units and the optimal value of IPFC parameters. IPFC is modeled using Power Injection (PI) model and incorporated into the problem formulation. This proposed method is compared with that of conventional LR method by validating on standard test systems like 5-bus, IEEE 30-bus and IEEE 118-bus systems. A detailed discussion on power flow and voltage profile improvement is carried out which reveals that incorporating IPFC into power system network in its optimal location significantly enhance the load margin as well as the reliability of the system.
Źródło:
Archives of Electrical Engineering; 2013, 62, 1; 91-110
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Design and testing of a low cost peak-power tracking controller for a fixed blade 1.2 kVA wind turbine
Autorzy:
Gitano, H.
Taib, S.
Khdeir, M.
Powiązania:
https://bibliotekanauki.pl/articles/262657.pdf
Data publikacji:
2008
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie
Tematy:
wind turbine
DC-DC converter
peak power tracking
power controller
Opis:
Wind turbines are a common source of electrical power generation in rural sites around the world. The power generated by a wind turbine at a given wind speed is a non-linear function of rotor speed. This results in a specific rotor speed for maximum power production at each wind speed. A control system incorporating a Pulse Width Modulated DC -DC converter has been designed to vary the load on the wind turbine thereby forcing it to operate at its maximum power point. Another important feature of the controller is the application of electrical stall-breaking of the turbine. The circuit was then tested on a turbine test bed simulating various wind speeds, and the “peak-power tracking” capability and electrical breaking capability were verified. The system gave an overall efficiency of 70 to 80% over a wide range of wind speeds and PWM duty cycles.
Źródło:
Electrical Power Quality and Utilisation. Journal; 2008, 14, 1; 95-101
1896-4672
Pojawia się w:
Electrical Power Quality and Utilisation. Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Power flow controller based on bipolar direct PWM AC/AC converter operation with active load
Autorzy:
Kaniewski, Jacek Zbigniew
Powiązania:
https://bibliotekanauki.pl/articles/141487.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
power flow controller
direct AC/AC converter
matrix chopper
power quality
Opis:
The uncontrolled power flow in the AC power system caused by renewable energy sources (restless sources, distributed energy sources), dynamic loads, etc., is one of many causes of voltage perturbation, along with others, such as switching effects, faults, and adverse weather conditions. This paper presents a three-phase voltage and power flow controller, based on direct PWM AC/AC converters. The proposed solution is intended to protect sensitive loads against voltage fluctuation and problems with power flow control in an AC power system. In comparison to other solutions, such as DVR, UPFC, the presented solution is based on bipolar matrix choppers and operates without a DC energy storage unit or DC link. The proposed solution is able to compensate 50% voltage sags, in the case of three-phase symmetrical voltage perturbation, and single phase voltage interruptions. Additionally, by means of a voltage phase control with a range of 60◦ in each phase, it is possible to control the power flow in an AC power system. The paper presents an operational description, a theoretical analysis based on the averaged state space method and four terminal descriptions, and the experimental test results from a 1 kVA laboratory model operating under active load.
Źródło:
Archives of Electrical Engineering; 2019, 68, 2; 341-356
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Electric power steering system controller design using induction machine
Autorzy:
Naibiao, Zhang
Tianfang, Cai
Xuezheng, Han
Powiązania:
https://bibliotekanauki.pl/articles/141715.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
motor induction
electric power
PID control
EPS
Opis:
An electric power steering system (EPS) is a new type of steering system developed after a mechanical hydraulic power system (MHPS) and electric-hydraulic power steering system (EHPS). In order to coordinate and solve the portability and sensitivity of the steering system optimally, taking an induction power steering system as the research object, the control algorithm of induction motor control under the EPS is studied in this paper. In order to eliminate the feed-forward performance degradation caused by the change of feed-forward parameters, an on-line identification algorithm of feed-forward parameters is proposed. It can improve the control performance of online identification among three feed-forward parameters in the T-axle motor, it improves on the robustness of feed-forward control performance, at the same time it also gives simulation and test results. This method can improve the control performance of the three feed-forward parameter online identification of the T-axis motor and improve the robustness of feed-forward control performance. At the same time, simulation and test results are given. The simulation results show that the algorithm can significantly improve the response speed and control accuracy of EPS system control.
Źródło:
Archives of Electrical Engineering; 2019, 68, 2; 279-293
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Multi-objective optimal reactive power dispatch to maximize power system social welfare in the presence of generalized unified power flow controller
Autorzy:
Suresh, C. V.
Sivanguraju, S.
Powiązania:
https://bibliotekanauki.pl/articles/141441.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
generalized unified power flow controller
optimal reactive power dispatch
social welfare
multi-objective optimization
Opis:
In this paper a novel non-linear optimization problem is formulated to maximize the social welfare in restructured environment with generalized unified power flow controller (GUPFC). This paper presents a methodology to optimally allocate the reactive power by minimizing voltage deviation at load buses and total transmission power losses so as to maximize the social welfare. The conventional active power generation cost function is modified by combining costs of reactive power generated by the generators, shunt capacitors and total power losses to it. The formulated objectives are optimized individually and simultaneously as multi-objective optimization problem, while satisfying equality, in-equality, practical and device operational constraints. A new optimization method, based on two stage initialization and random distribution processes is proposed to test the effectiveness of the proposed approach on IEEE-30 bus system, and the detailed analysis is carried out.
Źródło:
Archives of Electrical Engineering; 2015, 64, 3; 405-426
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Phase-locked loop technique system with orthogonal signal generator for power electronics controllers
Wykorzystanie układu pętli synchronizacji fazowej z zastosowaniem generatora sygnałów ortogonalnych w energoelektronicznych układach sterowania
Autorzy:
Wyszomirski, M.
Rosołowski, E.
Powiązania:
https://bibliotekanauki.pl/articles/410547.pdf
Data publikacji:
2011
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
phase-locked loop
Orthogonal Signal Generator
frequency estimation
phase-angle detection
power electronics controller
Opis:
This paper presents a Phase-Locked Loop (PLL) scheme with Orthogonal Signal Generator (OSG). The proposed technique enables to eliminate the influence of distortions from the observed signal on proper determination of its parameters as a phase, magnitude or frequency. A simulation model of the system is developed and results of investigation are provided. Some recommendations on the scheme settings for elimination of harmonic and inter-harmonic components are also included. It was verified that the proposed PLL with OSG system can be considered as an useful and effective tool in implementations that require a great accuracy of the phase angle and frequency estimation. The system could be applied in three-phase power systems control units such as FACTS converters or doubly-fed induction generators control scheme. Simulation results demonstrate the effectiveness and robustness of the proposed solution.
W artykule przedstawiono układ pętli synchronizacji fazowej (PSF) z generatorem sygnałów ortogonalnych (GSO). Proponowana technika umożliwia wyeliminowanie wpływu zakłóceń zanalizowanego sygnału na określenie jego parametrów takich jak faza, amplituda czy częstotliwość. Przedstawiono model symulacyjny proponowanego układu i zaprezentowano wyniki doświadczeń. Zawarto także niektóre z zalecanych konfiguracji schematu w celu eliminacji składowych harmonicznych i interharmonicznych sygnału. Dowiedziono, że proponowany system PSF z GSO może być rozpatrywany jako użyteczne i efektywne narzędzie w implementacjach wymagających dużej dokładności estymacji fazy i częstotliwości. Proponowany system może być stosowany w układach sterowania trójfazowych systemów takich jak FACTS lub w układach sterowania generatorów indukcyjnych dwustronnie zasilanych (DFIG). Wyniki symulacji wskazują na skuteczność i poprawność działania zaproponowanego rozwiązania.
Źródło:
Present Problems of Power System Control; 2011, 1; 61-74
2084-2201
Pojawia się w:
Present Problems of Power System Control
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Multiobjective Improved Particle Swarm Optimisation for Transmission Congestion and Voltage Profile Management using Multilevel UPFC
Autorzy:
Rao, Mallavolu Malleswara
Ramadas, Geetha
Powiązania:
https://bibliotekanauki.pl/articles/1193696.pdf
Data publikacji:
2019
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
congestion
unified power flow controller
improved particle swarm optimization
modular multilevel converter
voltage profile
Opis:
This paper proposes a multiobjective improved particle swarm optimisation (IPSO) for placing and sizing the series modular multilevel converter-based unified power flow controller (MMC-UPFC) FACTS devices to manage the transmission congestion and voltage profile in deregulated electricity markets. The proposed multiobjective IPSO algorithm is perfect for accomplishing the close ideal distributed generation (DG) sizes while conveying smooth assembly qualities contrasted with another existing algorithm. It tends to be reasoned that voltage profile and genuine power misfortunes have generous upgrades along ideal speculation on DGs in both the test frameworks. The proposed system eliminates the congestion and the power system can be easily used to solve complex and non-linear optimisation problems in a real-time manner.
Źródło:
Power Electronics and Drives; 2019, 4, 39; 79-93
2451-0262
2543-4292
Pojawia się w:
Power Electronics and Drives
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of UPFC for enhancement of voltage profile and minimization of losses using Fast Voltage Stability Index (FVSI)
Autorzy:
Kumar, S.
Renuga, P.
Powiązania:
https://bibliotekanauki.pl/articles/140514.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
flexible AC transmission system (FACTS)
real and reactive power
Unified Power Flow Controller (UPFC)
Bacterial Foraging (BF) algorithm
Opis:
Transmission line loss minimization in a power system is an important research issue and it can be achieved by means of reactive power compensation. The unscheduled increment of load in a power system has driven the system to experience stressed conditions. This phenomenon has also led to voltage profile depreciation below the acceptable secure limit. The significance and use of Flexible AC Transmission System (FACTS) devices and capacitor placement is in order to alleviate the voltage profile decay problem. The optimal value of compensating devices equires proper optimization technique, able to search the optimal solution with less computational burden. This paper presents a technique to provide simultaneous or individual controls of basic system parameter like transmission voltage, impedance and phase angle, thereby controlling the transmitted power using Unified Power Flow Controller (UPFC) based on Bacterial Foraging (BF) algorithm. Voltage stability level of the system is defined on the Fast Voltage Stability Index (FVSI) of the lines. The IEEE 14-bus system is used as the test system to demonstrate the applicability and efficiency of the proposed system. The test result showed that the ocation of UPFC improves the voltage profile and also minimize the real power loss.
Źródło:
Archives of Electrical Engineering; 2012, 61, 2; 239-250
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Stability analysis and efficiency improvement of IPFC using latest PR controller
Autorzy:
Gurijala, Sridhar Babu
Kishore, D. Ravi
Nittala, Ramchandra
Godala, Rohith Reddy
Powiązania:
https://bibliotekanauki.pl/articles/1841160.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
control algorithms
FACTS devices
multilevel inverter
interline power flow controller
algorytmy sterowania
FAKTY urządzeń
falownik wielopoziomowy
interline kontroler przepływu mocy
Opis:
The deviation from the ideal waveformcauses disturbances and failure of end-user load equipment. Power traveling a long distance from the generation plant to the end-user leads to deterioration of its quality, and the intensive utilization of power leads to serious issues in the grid resulting in power quality problems. To make the system effective and able to meet modern requirements, flexible AC transmission system (FACTS) devices should be installed into the grid. The interline power flow controller (IPFC) is the latest FACTS device, which compensates for both active and reactive power among multi-line systems. The converters used in the IPFC are crucial as they can be adjusted to regulate the power flow among the lines. This paper proposes a cascaded IPFC with hysteresis and proportional resonant voltage controllers. Some main drawbacks of controllers like steady-state errors and reference tracking of converters can be easily achieved by the PR controller, which makes the system efficient and can be used for a wide range of grid applications. Hysteresis and PR controllers are explained in detail in the following sections. A comparative analysis is carried out among control algorithms to choose the suitable controller which maintains stability in the system.
Źródło:
Archives of Electrical Engineering; 2021, 70, 3; 615-630
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Novel Fuzzy-Based Self-Adaptive Single Neuron PID Load Frequency Controller for Power System
Autorzy:
Eissa, M. Abdullah
Powiązania:
https://bibliotekanauki.pl/articles/1193688.pdf
Data publikacji:
2019
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
power system
load frequency
Intelligent Control
PID
Single Neuron
Opis:
This paper proposes a newly adaptive single-neuron proportional integral derivative (SNPID) controller that uses fuzzy logic as an adaptive system. The main problem of the classical controller is lacking the required robustness against disturbers, measurement noise in industrial applications. The new formula of the proposed controller helps in fixing this problem based on the fuzzy logic technique. In addition, the genetic algorithm (GA) is used to optimize parameters of the SNPID controller. Because of the high demands on the availability and efficiency of electrical power production, the design of robust load-frequency controller is becoming increasingly important due to its potential in increasing the reliability, maintainability and safety of power systems. So, the proposed controller has been applied for load-frequency control (LFC) of a single-area power system. The effectiveness of the proposed SNPID controller has been compared with the conventional controllers. The simulation results show that the proposed controller approach provides better damping of oscillations with a smaller settling time. This confirms its superiority against its counterparts. In addition, the results show the robustness of the proposed controller against the parametric variation of the system.
Źródło:
Power Electronics and Drives; 2019, 4, 39; 141-150
2451-0262
2543-4292
Pojawia się w:
Power Electronics and Drives
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Power system oscillation damping controller design: a novel approach of integrated HHO-PSO algorithm
Autorzy:
Devarapalli, Ramesh
Kumar, Vikash
Powiązania:
https://bibliotekanauki.pl/articles/1845539.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Harris hawk optimization
power system stabilizers
STATCOM
FACTS
particle swarm optimization
Opis:
The hybridization of a recently suggested Harris hawk’s optimizer (HHO) with the traditional particle swarm optimization (PSO) has been proposed in this paper. The velocity function update in each iteration of the PSO technique has been adopted to avoid being trapped into local search space with HHO. The performance of the proposed Integrated HHO-PSO (IHHOPSO) is evaluated using 23 benchmark functions and compared with the novel algorithms and hybrid versions of the neighbouring standard algorithms. Statistical analysis with the proposed algorithm is presented, and the effectiveness is shown in the comparison of grey wolf optimization (GWO), Harris hawks optimizer (HHO), barnacles matting optimization (BMO) and hybrid GWO-PSO algorithms. The comparison in convergence characters with the considered set of optimization methods also presented along with the boxplot. The proposed algorithm is further validated via an emerging engineering case study of controller parameter tuning of power system stability enhancement problem. The considered case study tunes the parameters of STATCOM and power system stabilizers (PSS) connected in a sample power network with the proposed IHHOPSO algorithm. A multi-objective function has been considered and different operating conditions has been investigated in this papers which recommends proposed algorithm in an effective damping of power network oscillations.
Źródło:
Archives of Control Sciences; 2021, 31, 3; 553-591
1230-2384
Pojawia się w:
Archives of Control Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
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