基于MRAS车用IPMSM转速估计和参数辨识

Speed Estimation and Parameter Identification of IPMSM Based on MRAS

针对车用位置传感器故障,设计出基于矢量控制的车用IPMSM的转速估计方案。MTPA控制中利用MRAS在线估计转速,在~*i_d=0控制方式中仅利用q轴电流辨识转速;利用MRAS同时辨识定子电阻和永磁体磁链。对该方案进行了仿真验证,表明方案能够准确估计转速以及电机参数辨识,具有良好动态性能。

In this paper a method of estimating the rotor speed of IPMSM with position sensor fault on the basis of vector control is put forward.The estimated speed is gained by using model reference adaptive system(MRAS) in the current vector control algorithm of MTPA.In * i_d =0 current control method only the q axis current are needed for the rotor speed estimation.In addition the stator resistance and magnet flux of IPMSM are identified by using MRAS system.The simulation model is built under the Simulink and the results show that this novel method is capable of precise estimating the rotor speed and parameters of IPMSM.Also it possesses a good performance of dynamic.