关键词: 虚拟信号注入, 内置式永磁同步电动机, 最大转矩电流比控制, 误差分析

Abstract:

In the virtual signal injection based maximum torque per ampere (MTPA) control of interior permanent magnet synchronous motor (IPMSM),the algorithm includes the stator resistance and d-axis inductance.If these parameters deviate from their actual values,the MTPA control error will be resulted in.According to the basic principle of virtual signal injection method,the expression of the MTPA error angle caused by the parameter deviation was deduced.Theoretical analyses and simulation investigations of the MTPA error angle caused by the deviation of stator resistance and d-axis inductance were carried out.The results show that the error angle resulted from the resistance deviation is usually small provided the speed is not very low,and the d-axis inductance deviation is the main cause of the MTPA error angle.

Key words: virtual signal injection, interior permanent magnet synchronous motor (IPMSM), maximum torque per ampere (MTPA) control, error analysis