异步电机直接转矩控制系统研究

Study on Direct Torque Control for Asynchronous Motor

在讨论直接转矩控制原理的基础上介绍了一种采用滞环模型切换的定子磁链计算方法 ,并分析了定子电阻变化对直接转矩控制的影响。实验结果表明 :采用上述控制策略的调速系统具有良好的静。

This paper discusses the algorithm of Direct Torque Control (DTC) and introduces a stator flux calculation method with hysteresis band exchange of two different models. The influence of the variance of stator resistor on DTC is analyzed too. The experimental results indicated that the speed regulation system got both good dynamic and static performance with this control method, and there is no oscillation during model exchanging.