摘  要：永磁同步电机以其体积小、效率高、可靠性好以及对环境的适应性强等诸多优点，在各种高性能驱动系统中得到广泛应用。无传感器永磁同步电机控制技术具有成本低、体积小，可靠性高等优点，是当前永磁同步电机控制技术领域的研究热点之一。该文对基于高频信号注入法进行永磁同步电机无传感器控制技术的基本原理进行论述，并采用滤波方法得到转子位置和速度估计信息，建立了PMSM无传感器矢量控制系统的仿真模型，给出了仿真试验结果。
关键词：永磁同步电机；仿真；建模；高频注入法

Abstract: Permanent magnet synchronous motor (PMSM) has been widely used in high performance drive applications for its advantages, such as compactness, high efficiency, reliability and suitability to environment. Sensorless control of permanent magnet synchronous motor has been a hot research topic of motor control technology, which has the advantages of low cost and high reliability. The principles and implementations of permanent magnet synchronous motor sensorless control based on high-frequency signal injection were investigated in this dissertation，and the position and speed estimations were achieved by usingα-β-γalgorithm. The simulation model for PMSM sensorless vector control system was established by using the proposed rotor position and speed estimation. The experimental results were given.
Key words: PMSM;simulation;modeling;high frequency injection method