针对新型柴油机变频起动装置的控制要求,提出了同步电机的转子初始位置及动态位置的无机械传感器的检测方法。该方法通过深入分析同步电机内部磁路特性,建立了“理想化”电机模型,并最终利用定子的电流和电压,计算出转子的初始和动态位置。 Aimed at the control requirements of the new diesel engine starting device, a method of detecting the initial position and dynamic position of the rotor of the synchronous motor without a mechanical sensor is proposed. The method establishes “idealized” motor model through in-depth analysis of the internal magnetic circuit characteristics of synchronous motor, and finally uses the stator current and voltage to calculate the rotor’s initial and dynamic position.