Abstract：In this paper, three vectors space vector pulse width modulation (SVPWM) algorithm based on nine-switch converter is proposed on the basis of electric vehicle integrated vehicle drive system. Nine-switch converter 27 switching mode and their corresponding positions in symmetric six-phase permanent magnet synchronous motor (PMSM) voltage vector map are given. The algorithm divides αβ subspace into six sectors. Three voltage vectors closest to the sector are selected to synthesize the reference vector. The process how to correctly select the optimal switching sequences is explained in detail. Compared with four vectors SVPWM algorithm, three vectors SVPWM algorithm not only maximizes DC bus voltage utilization, but also reduces switch frequency. Through simulation, starting process of motor system is analyzed in detail. Experiment platform for a symmetrical six-phase PMSM drive system is constructed. Through analysis of motor current in steady state, the effectiveness of proposed method is verified.
李永恒, 刘陵顺. 基于九开关变换器的对称六相永磁同步电机集成车载驱动系统研究[J]. 电工技术学报, 2019, 34(zk1): 30-38.
Li Yongheng, Liu Lingshun. The Research of Integrated Vehicle Drive System of Symmetrical Six-Phase Permanent Magnet Synchronous Motor Based on Nine-Switch Converter. Transactions of China Electrotechnical Society, 2019, 34(zk1): 30-38.
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2019, Vol. 34 
