基于方波信号注入的永磁同步电机位置检测方法研究

Research on PMSM position detection method based on square wave signal injection

针对本文研究对象船用无轴推进永磁同步电机,本文给出了一种基于方波信号注入的永磁同步电机位置检测方法。根据两相静止坐标系下高频模型,通过定子高频电流分量获得位置辨识偏差信息,进而通过机械PID型Luenberger位置跟踪观测器得到位置信息。最后通过仿真验证了本文理论分析的正确性和所提策略的有效性。

Aiming at marine propulsion permanent magnet synchronous motor(PMSM),this paper presents a position detection method of PMSM based on square wave signal injection.According to the high-frequency model in two-phase static coordinate system,the position identification deviation information is obtained through high-frequency current component of the stator,and then position information is obtained by a mechanical PID Luenberger position tracking observer.The correctness of theoretical analysis and effectiveness of the proposed strategy are verified by simulation.