Abstract：Using the concept of multiple degrees of freedom in multiphase machines, this paper adopts an SVPWM control algorithm for a 5-phase permanent magnet type bearingless motor. The appropriate voltage vectors are selected in torque plane and suspension plane, and according to the prompt feedback in both planes and the algorithm proposed, the applying time of each voltage vector and the conducting time of power electronics devices are carried out. Conventionally, space voltage vectors in harmonic plane are used to ameliorate the magnetic field, improve the power density or obtain better voltage usage rate. In this paper, space voltage vectors in harmonic plane are properly selected by the algorithm mentioned to make the motor successfully suspended. In the end, the feasibility and effectiveness of the control algorithm proposed is verified by experimental result.
姜海博, 黄进, 康敏. 单绕组五相永磁无轴承电机的SVPWM控制[J]. 电工技术学报, 2011, 26(1): 34-39.
Jiang Haibo, Huang Jin, Kang Min. SVPWM Control for a 5-Phase PM Bearingless Motor With Single Set of Windings. Transactions of China Electrotechnical Society, 2011, 26(1): 34-39.
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2011, Vol. 26 
