感应电动机调速系统运行速度跟随控制方法

Speed Identification and Following Control Method of Induction Motor Speed Control System

传统非线性静态速度控制方法存在跟随精度差的问题,为此提出一种基于速度矢量模型的感应电动机调速系统运行速度跟随控制方法。构建数学矢量模型,得到两项旋转电磁绕组的电压、电流、磁链等基础信息,平衡转子磁链区域并控制偏差量,基于改进的价值函数获取三个轴向的电流值,转矩参数及电压的补偿量,采用归一化处理方法两两确定参数的初始值,实现对感应电动机调速系统的精确跟随控制,仿真结果表明提出方法运行转数偏差小,跟随轨迹趋近于真实值。

The traditional nonlinear static speed control method has the problem of poor follow-up accuracy.Therefore,a speed follow-up control method based on the speed vector model is proposed.The mathematical vector model is constructed to obtain the basic information of voltage,current and flux of the two rotating electromagnetic windings,balance the rotor flux area and control the deviation.Based on the improved value function,the current value,torque parameter and voltage compensation value of the three axes are obtained.The initial value of the parameters is determined by the method of normalization,and the accuracy of the induction motor speed control system is realized the simulation results show that the deviation of the proposed method is small,and the following trajectory tends to the real value.