基于高频方波注入的船舶电机无传感器控制研究

Research marine motor sensor-less control based on high frequency square injection

随着大功率交流调速技术的不断进步,船舶电力推进如今成为船舶行业的主要发展目标。为研究运行可靠稳定、灵活、高性能的船舶电机无位置传感器控制,系统采用高频注入法估算电机转子位置信号,根据基于高频注入永磁同步电机数学模型的研究,该系统中高频采用的是高频方波注入,减少滤波器的使用从而缓解了转子位置延迟现象,同时采用锁相环对电机转子的相位和频率跟踪来计算电机转子的估计转速,克服了估算转速脉动大的困难。利用Matlab对电机控制系统仿真,验证电机控制系统的电机转速平滑稳定,转子位置波形在0–2π有规律往返。最终实现高精度、灵活的无传感器船舶电机控制。

Along with the advance of high power ac speed regulating technique, ship electric propulsion now become the main development goal of shipping industry. In order to research a reliable, stable, flexible and high-powered marine motor sensor-less control, system adopts high frequency signal injection observing motor rotor position signal, and according to the mathematical model research based on high frequency injection permanent magnet synchronous motor, high frequency used in the system is high frequency square wave injection, reduces the use of filter, so reduces the delay phenomenon of the rotor position, uses phase-locked loop to track the phase and frequency of the motor rotor to calculate the estimated motor rotor speed, this overcomes the difficulties of estimate speed ripple. At last, marine motor system with the Matlab simulation,verify the motor speed smooth stability of motor control system, the rotor position waveform in 0~2π regularly commute. Finally realized the high precision and agility of marine motor sensor-less control system.