The Experts below are selected from a list of 25446 Experts worldwide ranked by ideXlab platform
H Akagi - One of the best experts on this subject based on the ideXlab platform.
-
the state of the art of Active Filters for power conditioning
European Conference on Power Electronics and Applications, 2005Co-Authors: H AkagiAbstract:Unlike traditional passive Filters, Active Filters for power conditioning have multiple functions such as harmonic filtering/damping/isolation/termination, load balancing, reActive-power control for power factor correction and voltage regulation, voltage-flicker reduction, or their combinations. Significant cost reductions in both power semiconductor devices and signal-processing devices have inspired many manufactures in Japan, Europe and the United States to put Active Filters on the market. This paper deals with Active Filters for power conditioning, and specifically hybrid Active Filters for harmonic filtering of three-phase diode rectifiers
-
Active Filters and energy storage systems for power conditioning in japan
International Conference on Power Electronics Systems and Applications, 2004Co-Authors: H AkagiAbstract:This paper describes advanced power electronics technology relevant to Active filtering and energy storage for the purpose of power conditioning. The combination of Active filtering and energy storage leads to a versatile system in terms of power conditioning. However, energy storage is much more difficult and costly in realization than Active filtering because modern science offers only chemical action, electromagnetic or electrostatic field, and kinetic or potential energy as viable ways of energy storage. The author cannot survey the whole spectrum of Active filtering and energy storage. Therefore, this paper is focused on the present status of Active Filters for power conditioning, along with a 200-MJ/20-MW flywheel energy storage system which has been commercially installed on a 66-kV power system for the purpose of line-frequency regulation in Japan.
-
implementation and performance of cooperative control of shunt Active Filters for harmonic damping throughout a power distribution system
IEEE Industry Applications Society Annual Meeting, 2002Co-Authors: Pichai Jintakosonwit, Hideaki Fujita, H Akagi, Satoshi OgasawaraAbstract:This paper proposes the cooperative control of multiple Active Filters based on voltage detection for harmonic damping throughout a power distribution system. The arrangement of a real distribution system would be changed according to system operation, and/or fault conditions. In addition, shunt capacitors and loads are individually connected to, or disconnected from, the distribution system. Independent control might make multiple Active Filters produce unbalanced compensating currents. This paper presents hardware and software implementations of cooperative control for two Active Filters. Experimental results verify the effectiveness of the cooperative control with the help of a communication system.
-
the unified power quality conditioner the integration of series and shunt Active Filters
IEEE Transactions on Power Electronics, 1998Co-Authors: Hideaki Fujita, H AkagiAbstract:This paper deals with unified power quality conditioners (UPQCs), which aim at the integration of series-Active and shunt-Active power Filters. The main purpose of a UPQC is to compensate for voltage flicker/imbalance, reActive power, negative-sequence current and harmonics. In other words, the UPQC has the capability of improving power quality at the point of installation on power distribution systems or industrial power systems. This paper discusses the control strategy of the UPQC, with a focus on the how of instantaneous Active and reActive powers inside the UPQC. Experimental results obtained from a laboratory model of 20 kVA, along with a theoretical analysis, are shown to verify the viability and effectiveness of the UPQC.
-
new trends in Active Filters for power conditioning
IEEE Transactions on Industry Applications, 1996Co-Authors: H AkagiAbstract:Attention has been paid to Active Filters for power conditioning which provide the following multifunctions: reActive power compensation; harmonic compensation; flicker/imbalance compensation; and voltage regulation. Active Filters in a range of 50 kVA-60 MVA have been practically installed in Japan. In the near future, the term "Active Filters" will have a much wider meaning than it did in the 1970s. For instance, Active Filters intended for harmonic solutions are expanding their functions from harmonic compensation of nonlinear loads into harmonic isolation between utilities and consumers, and harmonic damping throughout power distribution systems. This paper presents the present status of Active Filters based on state-of-the-art power electronics technology, and their future prospects and directions toward the 21st Century, including the personal views and expectations of the author.
Pericle Zanchetta - One of the best experts on this subject based on the ideXlab platform.
-
model predictive control for shunt Active Filters with fixed switching frequency
IEEE Transactions on Industry Applications, 2017Co-Authors: Luca Tarisciotti, Andrea Formentini, Alberto Gaeta, Marco Degano, Pericle Zanchetta, Roberto Rabbeni, Marcello PucciAbstract:This paper presents a modification to the classical Model Predictive Control (MPC) algorithm and its application to Active power Filters. The proposed control is able to retain all the advantages of a finite control set MPC while improving the generated waveforms harmonic spectrum. In fact, a modulation algorithm, based on the cost function ratio for different output vectors, is inherently included in the MPC. The cost function-based modulator is introduced and its effectiveness on reducing the current ripple is demonstrated. The presented solution provides an effective and straightforward single loop controller, maintaining an excellent dynamic performance despite the modulated output and it is self-synchronizing with the grid. This promising method is applied to the control of a shunt Active filter for harmonic content reduction through a reActive power compensation methodology. Significant results obtained by experimental testing are reported and commented, showing that MPC is a viable control solution for Active filtering systems.
-
the use of genetic algorithms for the design of resonant compensators for Active Filters
IEEE Transactions on Industrial Electronics, 2009Co-Authors: Wanchak Lenwari, Mark Sumner, Pericle ZanchettaAbstract:Resonant compensators appear to be suitable for Active power filter control, where the compensator needs to track harmonic currents accurately. However, to ensure stable operation and robustness to parameter uncertainties they require considerable design effort. This paper describes the use of a genetic algorithm for the optimization of the parameters of a resonant controller employed for the control of current in a shunt Active filter. The optimization process takes into account variations of the power system parameters to provide an optimum solution in terms of both speed of response and robustness. Experimental results confirm the effectiveness to the approach.
-
a high performance harmonic current control for shunt Active Filters based on resonant compensators
Conference of the Industrial Electronics Society, 2006Co-Authors: Wanchak Lenwari, Pericle Zanchetta, Mark Sumner, M CuleaAbstract:This paper proposes a very accurate harmonic current control for Shunt Active Filters (SAF) using resonant compensators. The Resonant control compensator based on sinusoidal internal model principle is introduced into the control system design in order to improve the control accuracy and performance for ac input signal. The proposed current control system is designed to operate with a single dq reference frame, synchronous with the 50 Hz supply voltage, for the compensation of all main harmonic currents, 5th, 7th, 11th and 13th. The principle of the proposed control method and the design procedure is presented. Experimental results confirm the accuracy and effectiveness of the suggested approach. Excellent harmonic current tracking performance can be achieved. Another major advantage of this strategy is the ability to eliminate the effect of an ac external disturbance from the harmonic components caused by the power supply.
Anup Kumar Panda - One of the best experts on this subject based on the ideXlab platform.
-
comparison of two compensation control strategies for shunt Active power filter in three phase four wire system
IEEE PES Innovative Smart Grid Technologies Conference, 2011Co-Authors: M Suresh, Sushree Sangita Patnaik, Y Suresh, Anup Kumar PandaAbstract:Due to a large amount of non-linear power electronic equipments, impact and fluctuating loads (such as that of arc furnace, heavy merchant mill and electric locomotive, etc), problems of power quality have become more and more serious with each passing day, as a result Active power filter (APF) gains much more attention due to excellent harmonic compensation. But still the performance of the Active filter seems to be in contradictions with different control strategies. This paper presents detailed analysis to compare and elevate the performance of two control strategies for extracting reference currents of shunt Active Filters under distorted and unbalanced conditions. The well known methods, instantaneous real Active and reActive power method (p-q) and Active and reActive current method (i d −i q ) are two control methods which are extensively used in Active Filters. On owing i d − i q method gives away an outstanding performance under any voltage conditions (balanced, un-balanced, balanced non-sinusoidal and balanced sinusoidal with different main frequencies). Extensive simulations were carried out; simulation results validate the superior performance of Active and reActive method (i d − i q ).
-
fuzzy controller based 3phase 4wire shunt Active filter for mitigation of current harmonics with combined p q and id iq control strategies
Energy and Power Engineering, 2011Co-Authors: M Suresh, Anup Kumar Panda, Y SureshAbstract:As more and more variable frequency drives (VFDs), electronic ballasts, battery chargers, and static Var compensators are installed in facilities, the problems related to harmonics are expected to get worse. As a result Active power filter (APF) gains much more attention due to excellent harmonic compensation. But still the performance of the Active filter seems to be in contradictions with different control strategies. This paper presents detailed analysis to compare and elevate the performance of two control strategies for ex-tracting reference currents of shunt Active Filters under balanced, un-balanced and non-sinusoidal conditions by using Fuzzy controller. The well known methods, instantaneous real Active and reActive power method (p-q) and Active and reActive current method (id-iq) are two control methods which are extensively used in Active Filters. Extensive Simulations are carried out with fuzzy controller for both p-q and Id-Iq methods for different voltage conditions and adequate results were presented. Simulation results validate the superior per-formance of Active and reActive current control strategy (id-iq) with fuzzy controller over Active and reActive power control strategy (p-q) with fuzzy controller.
Hideaki Fujita - One of the best experts on this subject based on the ideXlab platform.
-
implementation and performance of cooperative control of shunt Active Filters for harmonic damping throughout a power distribution system
IEEE Industry Applications Society Annual Meeting, 2002Co-Authors: Pichai Jintakosonwit, Hideaki Fujita, H Akagi, Satoshi OgasawaraAbstract:This paper proposes the cooperative control of multiple Active Filters based on voltage detection for harmonic damping throughout a power distribution system. The arrangement of a real distribution system would be changed according to system operation, and/or fault conditions. In addition, shunt capacitors and loads are individually connected to, or disconnected from, the distribution system. Independent control might make multiple Active Filters produce unbalanced compensating currents. This paper presents hardware and software implementations of cooperative control for two Active Filters. Experimental results verify the effectiveness of the cooperative control with the help of a communication system.
-
the unified power quality conditioner the integration of series and shunt Active Filters
IEEE Transactions on Power Electronics, 1998Co-Authors: Hideaki Fujita, H AkagiAbstract:This paper deals with unified power quality conditioners (UPQCs), which aim at the integration of series-Active and shunt-Active power Filters. The main purpose of a UPQC is to compensate for voltage flicker/imbalance, reActive power, negative-sequence current and harmonics. In other words, the UPQC has the capability of improving power quality at the point of installation on power distribution systems or industrial power systems. This paper discusses the control strategy of the UPQC, with a focus on the how of instantaneous Active and reActive powers inside the UPQC. Experimental results obtained from a laboratory model of 20 kVA, along with a theoretical analysis, are shown to verify the viability and effectiveness of the UPQC.
-
the unified power quality conditioner the integration of series Active Filters and shunt Active Filters
Power Electronics Specialists Conference, 1996Co-Authors: Hideaki Fujita, H. AkagiAbstract:This paper deals with "unified power quality conditioners" (UPQCs) which aim to integrate series Active and shunt Active Filters. The main purpose of a UPQC is to compensate for voltage flicker/imbalance, reActive power, negative sequence current and harmonics. In other words, the UPQC has the capability of improving power quality at the point of installation on power distribution systems or industrial power systems. This paper discusses the control strategy of the UPQC, with the focus on the flow of instantaneous Active and reActive power inside the UPQC. Some interesting experimental results obtained from a laboratory model of 20 kVA, along with theoretical analyses, are shown to verify the viability and effectiveness of the UPQC.
-
design strategy for the combined system of shunt passive and series Active Filters
IEEE Industry Applications Society Annual Meeting, 1991Co-Authors: Hideaki Fujita, H AkagiAbstract:A design strategy for the combined power filter for a three-phase twelve-pulse thyristor rectifier is proposed. The shunt passive filter, which can minimize the output voltage of the series Active filter, is designed and tested in a prototype model. A specially designed shunt passive filter makes it possible to reduce the required rating of the series Active filter to 60% compared with a conventional shunt passive filter. >
M Suresh - One of the best experts on this subject based on the ideXlab platform.
-
comparison of two compensation control strategies for shunt Active power filter in three phase four wire system
IEEE PES Innovative Smart Grid Technologies Conference, 2011Co-Authors: M Suresh, Sushree Sangita Patnaik, Y Suresh, Anup Kumar PandaAbstract:Due to a large amount of non-linear power electronic equipments, impact and fluctuating loads (such as that of arc furnace, heavy merchant mill and electric locomotive, etc), problems of power quality have become more and more serious with each passing day, as a result Active power filter (APF) gains much more attention due to excellent harmonic compensation. But still the performance of the Active filter seems to be in contradictions with different control strategies. This paper presents detailed analysis to compare and elevate the performance of two control strategies for extracting reference currents of shunt Active Filters under distorted and unbalanced conditions. The well known methods, instantaneous real Active and reActive power method (p-q) and Active and reActive current method (i d −i q ) are two control methods which are extensively used in Active Filters. On owing i d − i q method gives away an outstanding performance under any voltage conditions (balanced, un-balanced, balanced non-sinusoidal and balanced sinusoidal with different main frequencies). Extensive simulations were carried out; simulation results validate the superior performance of Active and reActive method (i d − i q ).
-
fuzzy controller based 3phase 4wire shunt Active filter for mitigation of current harmonics with combined p q and id iq control strategies
Energy and Power Engineering, 2011Co-Authors: M Suresh, Anup Kumar Panda, Y SureshAbstract:As more and more variable frequency drives (VFDs), electronic ballasts, battery chargers, and static Var compensators are installed in facilities, the problems related to harmonics are expected to get worse. As a result Active power filter (APF) gains much more attention due to excellent harmonic compensation. But still the performance of the Active filter seems to be in contradictions with different control strategies. This paper presents detailed analysis to compare and elevate the performance of two control strategies for ex-tracting reference currents of shunt Active Filters under balanced, un-balanced and non-sinusoidal conditions by using Fuzzy controller. The well known methods, instantaneous real Active and reActive power method (p-q) and Active and reActive current method (id-iq) are two control methods which are extensively used in Active Filters. Extensive Simulations are carried out with fuzzy controller for both p-q and Id-Iq methods for different voltage conditions and adequate results were presented. Simulation results validate the superior per-formance of Active and reActive current control strategy (id-iq) with fuzzy controller over Active and reActive power control strategy (p-q) with fuzzy controller.
