基于模糊PI模型参考自适应的高速永磁同步电机转子位置检测

Rotor Position Measurement for High-speed Permanent Magnet Synchronous Motors Based on Fuzzy PI MRAS

针对高速永磁同步电机转速高、调速范围宽的特点,该文提出了一种模糊PI模型参考自适应(model reference adaptive system,MRAS)观测器,实现了永磁同步电机转子位置检测。此方法将模糊PI调节器应用于模型参考自适应观测器,通过模糊控制器调整PI调节器的比例积分系数,以使PI调节器能在电机很宽的速度范围内都具有良好的动稳态性能,提高了模型参考自适应观测器对高速永磁同步电机转子位置的检测精度。最后,以带有风机负载的4 kW磁悬浮轴承高速永磁同步电机为研究对象进行了Matlab仿真和实验,实现了基于此方法的转子位置检测和速度估计,并分析了转子位置误差产生的来源以及补偿方式,证明所提方法适用于高速永磁同步电机的转子位置检测。

On account of the features of the high speed permanent magnet synchronous motor which has a high speed and a wide speed range, this paper proposes a kind of rotor position observer which is model reference adaptive system （MRAS） based on fuzzy PI self-adaptive regulator. This method uses the fuzzy controller regulate the proportion and the integration ratio of the PI regulator, so that the PI regulator has a perfect performance in a wide speed range of the HSPMSM. This method improves the precision of the rotor＇s position which is observed by MRAS. In the end, simulations and experiments for a 4 kW HSPMSM with an air blower are carried out for this method. It realizes the position estimation. The error is analyzed and a compensation method is proposed. The results demonstrate that the Fuzzy PI MRAS Observer can effectively estimate the rotor position of the HSPMSM in a wide speed range.