针对航空起动发电系统电动运行状态下,永磁同步电机在起动过程中必须要准确知道转子的速度和位置,提出了一种基于高频信号注入法的无传感器控制策略。向电机的凸极注入高频电压信号,通过滤波器提取出所需要的转子位置信号,并且不受参数影响,有效的解决了传统机械传感器带来的各种弊端,尤其是在零速和低速有很好的控制效果。搭建了高频旋转电压注入法的Simulink仿真模型,仿真结果证明了该方法的有效性。 Aiming at aiming at the condition that the starting system of the aeronautical starting system is in the electric running state, the speed and position of the rotor must be accurately known in the starting process of the permanent magnet synchronous motor. A sensorless control strategy based on the high frequency signal injection method is proposed. The high frequency voltage signal is injected into the salient pole of the motor, the required rotor position signal is extracted through the filter, and the parameter is not affected, effectively solving the various disadvantages brought by the traditional mechanical sensors, especially at zero speed and low speed Very good control effect. The Simulink simulation model of high frequency rotating voltage injection is established. The simulation results show the effectiveness of the method.