Abstract：In order to suppress the generation of zero-sequence current and reduce the current ripple in the open-winding permanent magnet synchronous motor (OW-PMSM), an improved model predictive current control (MPCC) method is proposed to suppress the zero-sequence current. Firstly, we group six non-zero voltage vectors according to the magnitude of the voltage that generates the zero sequence; secondly, a reference voltage vector is used to directly select the nonzero voltage vector and zero vector of the first inverter, and the zero vector action time is calculated to realize the control of the zero sequence current. On this basis, two candidate nonzero voltage vectors of the second inverter are selected and the action time is calculated to realize the tracking of the d-q axis current. In this method, the first inverter acts on a non-zero voltage vector and a zero vector for each control period, and the second inverter acts on two non-zero voltage vectors for each control period, thus forming a hybrid double vector method. Experimental results show that the proposed hybrid double vector MPCC method can effectively suppress the generation of zero-sequence current and reduce the current ripples and improve the steady-state performance of the system.
张晓光, 闫康, 张文涵. 开绕组永磁同步电机混合双矢量模型预测控制[J]. 电工技术学报, 2021, 36(1): 96-106.
Zhang Xiaoguang, Yan Kang, Zhang Wenhan. Hybrid Double Vector Model Predictive Control for Open-Winding Permanent Magnet Synchronous Motor with Common DC Bus. Transactions of China Electrotechnical Society, 2021, 36(1): 96-106.
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2021, Vol. 36 
