Hybrid Space Vector Pulse Width Modulation Strategy for Three-Phase VIENNA Rectifier
Chen Jie1, Shen Yuting1, Shen Jiaqian1, Shi Mingming2, Chen Jiawei3
1. Jiangsu Key Laboratory of New Energy Generation and Power Conversion Nanjing University of Aeronautics & Astronautic Nanjing 211106 China; 2. State Grid Jiangsu Electric Power Research Institute Nanjing 211103 China; 3. School of Automation Chongqing University Chongqing 400044 China
Abstract：The input current of the three-phase VIENNA rectifier based on continuous space vector pulse width modulation (SVPWM) suffers from zero-crossing distortion issue, which will result in an increase of the current total harmonic distortion (THD). In order to eliminate the zero-crossing distortion problem, firstly, the cause of zero-crossing distortion is elaborately analyzed from the perspective of shared vector, and the advantages and disadvantages of continuous SVPWM and discontinuous SVPWM are clarified. Then, a hybrid SVPWM strategy which can eliminate the current zero-crossing distortion issue is proposed. Besides, two kinds of SVPWM are normalized from the perspective of common mode voltage, and the algorithm of hybrid SVPWM is optimized. Finally, the correctness of the proposed strategy is verified by simulation and experiments.
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2021, Vol. 36 
