SRM直接瞬时转矩系统抗饱和控制器设计

Design of Anti-windup Controller for SRMDirect Instantaneous Torque System

在开关磁阻电机直接瞬时转矩控制系统速度外环控制器中存在非线性饱和,控制器的积分控制环节会对误差进行积累并逐渐使误差增大,造成控制器的饱和效应,降低系统的性能,为此在传统速度控制器基础之上提出一种抗饱和自适应PID控制器,该方法通过对控制器输入饱和误差进行积分,并通过自适应系数调整控制器的积分项,保证系统出现饱和超调时,使其快速退饱和,仿真及试验表明该方法可以抑制饱和现象,提高电机速度响应,降低转速脉动,系统稳定性和鲁棒性较好。

In the direct instantaneous torque control system of switched reluctance motor, there is a nonlinear saturation in the speed outer loop controller. The integral control link of the controller will accumulate the error and increase the error gradually, resulting in the saturation effect of the controller and reducing the performance of the system. In this regard, an anti- windup adaptive PID controller is proposed on the basis of the traditional speed controller. This method integrates the input saturation error of controller and adjusts the integral term of controller by adaptive coefficient, so that it can quickly desaturation when the system has saturation overshoot. The simulation and test show that this method can suppress the saturation phenomenon, improve the motor response speed, reduce the ripple of speed, and achieve better system stability and robustness.