Two New-type Control Strategies for Six-Phase Open Winding PMSM

This paper proposes two new-type control strategies, namely quasi-two-vector control and quasi-four-vector control, for six-phase open-winding permanent magnet synchronous motor drive system. Compared with the traditional SVPWM method, it not only improves the calculation of sector judgment, but also removes the calculation of action time. Therefore, the calculation is simple and fast, the program running time is reduced by about 10%, the system efficiency is increased by 2%, and the switching action of power tube in a control cycle is reduced by 30%, so its switching loss is also reduced by 30%. In addition, the total harmonic distortion is only 15%. At last, the correctness and effectiveness of the quasi-two-vector control and the quasi-four-vector control are verified on the test bench.