The Experts below are selected from a list of 397326 Experts worldwide ranked by ideXlab platform
Gao Li-gang - One of the best experts on this subject based on the ideXlab platform.
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Three-dimensional SVM Algorithm DSTATCOM in Three-Phase Four-Wire System
IEEE Transactions on Power Electronics, 2011Co-Authors: Gao Li-gangAbstract:A midpoint leads to type three-level inverter as a main circuit of the distribution static var generator(DS-TATCOM) is presented;a three dimensional space vector modulation(3-D SVM) is changed into two dimensional space vector modulation(2-D SVM) algorithm principle.The simulation model of the inverter is built up by PSCAD/EMTDC.The simulation and experimental results show that the method has the better compensation capacity and un-balance inhibiting behaviors.
Hossain, Md. Jahangir - One of the best experts on this subject based on the ideXlab platform.
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Neutral Current Compensation in a VSG-Based Three-Phase Four-Wire Microgrid System
IEEE, 2018Co-Authors: Liu Jiannan, Rafi, Fida Hasan, Lu Junwei, Hossain, Md. JahangirAbstract:A Three-Phase Four-Wire System is commonly used on the customer side as a low-voltage power System for supplying universal single-phase loads. The degree of unbalance in the distribution System is growing due to interconnections of distributed energy resources unevenly in different phases. The unbalanced loads may cause an excess neutral current, which can result in the neutral conductor overload and power System security problems. In this paper, a control strategy based on the virtual synchronous generator with a neutral current controller is proposed. The controller enables the microgrid to operate under both grid-connected and islanded mode with the minimum neutral current. A microgrid built in Griffith University, Australia is used to verify the performances of the designed control algorithm. From the results, it is found that the proposed controller ensures smooth transition of microgrids from the grid-tied mode to the islanding mode, while regulating the active, reactive and unbalanced power efficiently.No Full Tex
Zhang Qian-qian - One of the best experts on this subject based on the ideXlab platform.
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Study on Controller of Shunt APF Three-Phase Four-Wire System
IEEE Transactions on Power Electronics, 2010Co-Authors: Zhang Qian-qianAbstract:This paper describes an active power filter(APF) used for Three-Phase Four-Wire,the basic principles and System features of predict in APF are introduced.The modeling and simulation of space vector modulation(SVM)based on the pre-dictive current controller are given.The waveforms show that the algorithm has good control effect and the experiment veri-fy the feasibility of the algorithm.
Zou Yunping - One of the best experts on this subject based on the ideXlab platform.
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One-Cycle Control Strategy and Simulation of Dynamic Voltage Regulator for Three-Phase Four-Wire System
Power system technology, 2007Co-Authors: Zou YunpingAbstract:A new one-cycle control scheme of dynamic voltage regulator (DVR) for Three-Phase Four-Wire System is proposed. On the basis of main circuit analysis, the one-cycle control model for DVR is deduced and simulated under voltage sag by 35% of rated voltage, voltage swell by 35% of rated voltage and the condition that there are harmonics in power source. Simulation results show that DVR with one-cycle control for Three-Phase Four-Wire System not only possesses better dynamic characteristics, but also its control circuit is simple. The DVR with one-cycle control can offer better compensation while the voltage variation extent is less than 30% and can restrain harmonics in power source as well.
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One-cycle control active power filter for Three-Phase Four-Wire Systems
2004Co-Authors: Li Cheng, Zou YunpingAbstract:An advanced active power filter with one-cycle control method for Three-Phase Four-Wire System is presented in this paper. First, the main circuit of APF is analyzed. And then the mathematic model of the controller is given. This active power filter employs a four-leg voltage-source inverter and its controller works with one-cycle controlled method. The functions of the proposed APF include the compensation of reactive, harmonic and unbalanced currents in power Systems. The one-cycle control method is a new control method with which both the detection of harmonic, reactive and unbalanced current components and the control process for APF are combined. So the control and detecting circuit become simple and has a very good real time property. The theory analysis and simulation results are given finally in this paper. Both theory analysis and simulation results show that the proposed method is effective.
Fermin Barrero Gonzalez - One of the best experts on this subject based on the ideXlab platform.
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comparison of control strategies for shunt active power filters in three phase four wire Systems
IEEE Transactions on Power Electronics, 2007Co-Authors: M I M Montero, Enrique Romero Cadaval, Fermin Barrero GonzalezAbstract:Strategies for extracting the Three-Phase reference currents for shunt active power filters are compared, evaluating their performance under different source and load conditions with the new IEEE Standard 1459 power definitions. The study was applied to a Three-Phase Four-Wire System in order to include imbalance. Under balanced and sinusoidal voltages, harmonic cancellation and reactive power compensation can be attained in all the methods. However, when the voltages are distorted and/or unbalanced, the compensation capabilities are not equivalent, with some strategies unable to yield an adequate solution when the mains voltages are not ideal. Simulation and experimental results are included