三相VIENNA整流器的混合空间矢量脉宽调制策略  

Hybrid Space Vector Pulse Width Modulation Strategy for Three-Phase VIENNA Rectifier

作　　者：陈杰[1] 沈禹廷 沈佳茜 史明明 陈家伟 Chen Jie;Shen Yuting;Shen Jiaqian;Shi Mingming;Chen Jiawei(Jiangsu Key Laboratory of New Energy Generation and Power Conversion Nanjing University of Aeronautics&Astronautic,Nanjing 211106 China;State Grid Jiangsu Electric Power Research Institute,Nanjing 211103 China;School of Automation Chongqing University,Chongqing 400044 China)

机构地区：[1]南京航空航天大学,江苏省新能源发电与电能变换重点实验室,南京211106 [2]国网江苏省电力有限公司电力科学研究院,南京211103 [3]重庆大学自动化学院,重庆400044

出　　处：《电工技术学报》2021年第S02期665-675,共11页Transactions of China Electrotechnical Society

摘　　要：基于连续空间矢量脉宽调制(SVPWM)的三相VIENNA整流器输入电流存在过零畸变,导致输入电流总谐波畸变率升高的问题。为了消除过零畸变,该文从共享矢量的角度对过零畸变产生的原因进行深入的分析,并比较连续SVPWM和断续SVPWM各自存在的优势与不足,进而提出一种混合SVPWM策略,可以有效解决过零畸变问题。此外,还从共模电压的角度对两种脉宽调制进行归一化处理,优化混合SVPWM的算法实现。最后,通过仿真和实验验证了所提控制策略的正确性。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.

关 键 词：过零畸变 共享矢量 混合空间矢量脉宽调制 共模电压 

分 类 号：TM464[电气工程—电器]