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《Journal of Chongqing University of Technology(Natural Science)》 2013-04
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The Control Strategy for Three-Phase Four-Leg Inverter

YU Lei,XIAO Hui-hui,LI Shan (School of Electronic Information and Automation, Chongqing University of Technology,Chongqing 400054,China)  
The traditional three-phase four-wire inverter uses the structure with three-phase three-leg,and the fourth wire constitutes the neutral formed transformer.A novel three-phase four-leg inverter is presented in this paper by adding the fourth leg to form neutral point instead of NFT to reduce the volume and weight and cost.This paper suggests a 3D-SVPWM control strategy and adds feed-forward compensation method for further improvement.The simulation result shows that this control strategy is feasible to provide the reliable theoretical basis for the new inverter to deal with unbalanced load and improve the utilization rate of DC bus voltage.
【Fund】: 重庆理工大学研究生创新基金资助项目(YCX2011102)
【CateGory Index】: TM464
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