双闭环可逆直流脉宽调速系统的MATLAB/Simulink仿真模型。系统无静差、电流超调量σi≤5 、可逆运行。额定负载启动到额定转速时的转速超调量σn≤10 。-Double Closed Loop Reversible MATLAB/Simulink simulation model DC PWM speed control system. No static error system, current overshoot σi≤5 , reversible operation. Rated

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