基于锁相环的永磁同步电动机无位置传感器控制

Sensorless Control of the PMSM Based on the Pll

位置传感器会增加系统成本和测量噪声,且无法应用在一些恶劣环境。介绍了一种基于锁相环的永磁同步电动机无位置传感器控制方法。它利用检测得到的电压、电流,基于电机模型,计算出电机的转子位置偏差。采用锁相环结构对转子位置进行跟踪估算,得到较为满意的结果。理论分析和仿真结果都证明了该方法的正确性和可行性。

The position sensors not only increase the cost, but also degrade the performance and reliability of the drive system in some implements. A novel sensorless control method of the PMSM based on the PLL is presented in this paper. It is according to the machine model, simple and practical. The validity and feasibility of this method is verified by the theoretic analysis and simulation results.