一种多相永磁同步电动机的最佳转矩控制

根据电机学的基本理论，建立了多相永磁同步电动机在定子静止坐标系及转子旋转坐标下的通用数学模型，该模型为多相永磁同步电动机的控制和特性分析建立了良好的基础。在电动机实际工作的电压和电流约束条件下，提出了多相永碰电动机的一种最佳转矩控制方法，该方法能够使电动机在给定的控制电流下获得最大的输出转矩。以9相电动机为例，利用Matlab建立了调速控制系统的仿真模型，仿真结果证明了建立的数学模型是合理的，提出的控制方法是行之有效的。

Optimum torque control of poly-phase permanent magnet synchronous motor

Based on the theories of e lectrical machine,the general mathematical models of poly-phase PMSM(Permanen t Magnet Synchronous Motor)on stator stationary coordinates and rotor rotatory coordinates are established.Those models form an important basis for the cont rol and performance analysis of poly-phase PMSM.Under the actual operation lim its of motor voltage and current ,a high-efficiency optimum torque control met hod for poly-phase PMSM is proposed.The maximum output torque is got under a given stator current.Taking a nine-phase PMSM as an example,a Matlab-based s peed control system simulation model is constructed.The simulation results show that the mathematical models established are reasonable and the control method proposed is valid.