Abstract: To deal with the defect of thrust ripples of the traditional six section direct thrust control (DTC) for permanent magnet linear synchronous motor (PMLSM), a novel DTC strategy of PMLSM combined 12 stator flux linkage sectors and 13 voltage space vectors is proposed. A novel voltage selection table is designed. The way of three and two devices conducting interactively is applied to realize 13 voltage space vectors. The method is simulated through Matlab/Simulink. The results of simulation verify the better performance of the twelve-section control method, which can reduce the thrust and flux linkage ripple.

Key words: Permanent magnet linear synchronous motor, direct thrust force control, sector subdivision, twelve-section

摘要： 针对永磁直线同步电机（PMLSM）传统6扇区直接推力控制推力脉动大的问题，提出了基于12定子磁链扇区和13电压空间矢量的直接推力控制方法，设计了一种新的电压选择开关表，利用三相和两相混合导通方式，实现13电压矢量输出，利用Matlab/Simulink对永磁直线同步电机12扇区直接推力控制系统进行了建模与仿真研究。仿真结果表明，与传统的直接推力控制方法相比，改进的12定子磁链扇区直接推力控制可以明显减小推力和磁链脉动，性能优越。

关键词: 永磁直线同步电动机, 直接推力控制, 扇区细分, 12扇区