Research on Differential-Mode Current and Common-Mode Voltage of Three-Phase Two-Level Grid-Connected Converters under Different Space Vector Modulation
Jiang Xianqiang1, Wu Yitong2, He Jinkui1, Xu Hailiang1, Zhao Rende1
1. College of Information and Control Engineering China University of Petroleum (East China) Qingdao 266580 China; 2. College of Energy and Electrical Engineering Hohai University Nanjing 210098 China
Abstract：In this paper, the typical space vector modulation strategy for the three-phase voltage source grid-connected converter was classified by the distribution of zero-vector, and a zero- sequence-voltage-balanced SVPWM strategy was proposed. Five modulation strategies were compared from the differential mode and common mode. By establishing a single-phase equivalent model, the differential mode current with different modulation ratios and power factors were predicted and analyzed using Matlab. By constructing a three-dimensional voltage vector space, the low-frequency common-mode components were analyzed using the impulse equivalence principle. The research is validated by experiments and provide a theoretical basis for the selection of modulation strategies for the converters.
蒋先强, 武奕彤, 何金奎, 徐海亮, 赵仁德. 不同空间矢量调制下三相两电平并网变换器的差模电流与共模电压对比研究[J]. 电工技术学报, 2019, 34(zk2): 586-595.
Jiang Xianqiang, Wu Yitong, He Jinkui, Xu Hailiang, Zhao Rende. Research on Differential-Mode Current and Common-Mode Voltage of Three-Phase Two-Level Grid-Connected Converters under Different Space Vector Modulation. Transactions of China Electrotechnical Society, 2019, 34(zk2): 586-595.
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2019, Vol. 34 
