基于电流矢量和开关表格控制的异步电机控制方法

A Control Method for Asynchronous Motor Based on the Current Vector and Switching Form

采用矢量控制技术控制电机,在连续控制上有很大的优势,但它对被控电机的参数要求很高,且计算繁琐。直接转矩控制技术计算相对简单很多,它简化了控制结构,直接对转矩和磁链进行砰-砰控制,低速性能较差,调速范围受到比较大的限制。鉴于上述两种控制方法的优缺点,本文提出一种新型三相电机控制方法,仿真表明,这种新型的控制方法继承了矢量控制和直接转矩控制的部分优点,又抑制了这两种控制方法性能上的一些不足。

Using the vector control technology to control the motor in continuous control have a great advantage,but it is charged with motor parameters demanding and tedious calculations.Direct Torque Control technology is relatively simple to calculate a lot,it simplifies the control structures,direct torque and flux bang-bang control,poor low-speed performance, speed range is subject to restrictions.In view of the advantages and disadvantages of the two control methods,this paper proposes a new type of three-phase motor control method,the simulation results show that this new control method inherited some of the advantages of the vector control and direct torque control,and inhibition of these two control a number of defi-ciencies in the method performance.