A novel space vector overmodulation strategy based on input current vector phase for indirect matrix converter
Wang Wensheng1, Li Shanhu1, Liu Xu1, Liu Yiping2
1. State Key Laboratory of Reliability and Intelligence of Electrical Equipment Hebei University of Technology, Tianjin 300130; 2. Tianjin Power Street Light Management Department, Tianjin 300151
Abstract：In order to further improve the voltage transfer ratio (VTR) of indirect matrix converter (IMC), this paper proposes a novel space vector over-modulation strategy by adjusting the input current vector phase. This strategy increases the VTR to 1.05 and achieves no error between the output voltage fundamental amplitude and the reference output voltage. The input current and output voltage vector under different space vector modulations of rectifier stage and inverter stage are analyzed firstly. On this basis, the overmodulation mode is further divided, the overmodulation Ⅲ region is added, and the input current vector phase is adjusted as an overmodulation strategy of the overmodulation mode Ⅲ. At the same time, the proposed overmodulation strategy accurately analyzes input and output characteristics by using Fourier integral, such as the relationship between the output voltage fundamental amplitude and the reference output voltage, the input and output low frequency harmonics and so on. Finally, the validity of the novel overmodulation strategy and the correctness of the input and output low frequency harmonic characteristics are verified by experiments.
王文圣, 李珊瑚, 刘旭, 刘义平. 一种基于输入电流矢量相位的新型间接矩阵变换器空间矢量过调制策略[J]. 电气技术, 2020, 21(3): 1-10.
Wang Wensheng, Li Shanhu, Liu Xu, Liu Yiping. A novel space vector overmodulation strategy based on input current vector phase for indirect matrix converter. Electrical Engineering, 2020, 21(3): 1-10.
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2020, Vol. 21 
