本文建立了一个基于直接转矩控制的异步电机变频调速系统。系统采用了两个滞环控制器,分别比较定子给定磁链与实际磁链、给定转矩与实际转矩的差值,然后根据这两个差值查询逆变器电压矢量开关表得到施加在异步电动机定子绕组上的电压矢量,然后通过脉冲宽度调制(Pulse Width Modulation,PWM)逆变器控制异步电动机。(An asynchronous motor variable frequency speed regulation system based on direct torque c

永磁同步电机，应用MTPA和弱磁控制的定子电流控制方法，完成矢量控制策略的搭建(The stator current control method based on MTPA and flux weakening control is used to complete the construction of vector control strategy for permanent magnet synchronous motor.)

基于MRAS模型参考自适应的永磁同步电机PMSM在线参数辨识MATLAB仿真模型，可辨识电机定子电阻、电感和永磁磁链，辨识精度比较高。(Based on the MRAS model reference adaptive PMSM on-line parameter identification matlab simulation model, the stator resistance, inductance and permanent flux can be identified, and