异步电机模型参考自适应滑模矢量控制系统研究

Vector Control System of Asynchronous Motor Based on Model Reference Adaptive and Sliding Mode Control

在异步电机矢量控制系统中,针对温度变化所引起的定子阻值改变对系统性能的影响,利用模型参考自适应控制(Model Reference Adaptive Control,MRAC)技术对转子磁链进行了观测,并且设计了一种滑模速度调节器代替PI调节器,构建了基于模型参考自适应系统(Model Reference Adaptive System,MRAS)和滑模速度调节器的异步电机矢量控制系统。仿真结果表明:该系统能够实现磁链的准确快速辨识,具有响应速度快、鲁棒性强等优点,适用于温度变化较大的场合,为军用车辆电驱动系统的发展提供了有效的研究方法。

In order to avoid the influence of stator resistance change caused by variable temperature, Model Reference Adaptive Control （MRAC） is applied to observe magnetic flux linkage for vector control system of asynchronous motor. The sliding mode speed regulator is designed to replace PI regulator, and the vector control system of asynchronous motor is built based on Model Reference Adaptive System （MRAS） and sliding mode speed regulator. Simulation results show that the magnetic flux linkage can be identified correctly and rapidly, and the system has faster response and better robustness, which is fit for the circumstance with wide variable temperature and provides an effective method for electric drive system of military vehicles.