基于磁通观测器的异步电机矢量控制系统

Research on magnetic observer to the asynchronous motor vector control system

在异步电机无速度传感器矢量控制系统中,其关键之处是速度推算,而基于磁通观测器的速度估算法,可以提高系统的推算精度。本研究首先结合异步电机状态方程对系统各个模块进行建模,然后采用C++语言对所提出的控制系统进行了计算机仿真。仿真结果表明,基于磁通观测器的异步电机矢量控制系统方案具有较快的动态响应和一定的鲁棒性,并能根据误差反馈较好的自动跟踪电机实际值,因此可以实现对电机转速进行稳定,精确,高效的控制。

The key of the Asynchronous Motor sensorless vector control system is velocity estimating,and the Magnetic observer calculate reckoning can improve the system precision. At this research, firstly each control model has been established based on the Asynchronous Motor state equation,and then using the C~＋ language to simulate the whole control system. The simulation results show that this control system has fast dynamic response and robust, and according with the error feedback it can also automate tracking the actual value of Motor.So the system can be achieved on stable, accurate and efficient control for the motor speed.