摘要：本文为扩大永磁同步电机的应用领域，提出了三相四桥臂驱动控制的方案。在详细分析了PMSM数学模型和3DSVPWM调制技术的基础上，采用Matlab/Simulink仿真软件搭建控制系统仿真模型，并从各个方面进行仿真研究。结果表明，三相四桥臂驱动永磁同步电机的控制系统在缺相或单相出现故障的情况下仍能保持良好的动态特性和优越的容错能力，从而验证了该方案的可靠性与合理性。
关键词：PMSM；三相四桥臂；容错能力；3DSVPWM

Abstract: In order to expand application area of PMSM，a driving control scheme of threephase fourleg was proposed.Based on detailed analysis of PMSM mathematical model and 3DSVPWM modulation technique, the simulation software of Matlab / Simulink was used to build the simulation model of the control system, and research of simulation in all aspects was conducted. A large amount of simulation results show that, the control system of threephase fourleg to drive PMSM can still maintain good dynamic performance and superior fault tolerance in case of one phase missing or singlephase fault, which verified reliability and rationality of the program in the article.
Key words:  PMSM；threephase fourleg； fault tolerance；3DSVPWM