摘  要：针对永磁同步电机直接转矩控制中存在转矩脉动大、逆变器开关不恒定的问题，国内外学者已经做出了相当大的贡献，提出了很多优化或改进措施。文章综述了近几年来国内外在这方面的研究成果，分析了采用直接转矩控制产生转矩脉动的原因以及抑制脉动转矩方法的优缺点。
关键词：永磁同步电机；直接转矩控制；转矩脉动

Abstract: Due to the problem of direct torque control for permanent magnet synchronous motor related to the torque ripple and the uncertainty of switching frequency,domestic and foreign scholars proposed many improved or optimized methods.In this paper,summarized research results in recent years,explained the reasons for the occurrence of torque ripple,and the advantages and disadvantages of various methods were analyzed.
Key Words: PMSM;DTC;Torque ripple