摘要：目前国内一部分电动汽车采用内置式永磁同步电机，内置式永磁同步电机及其控制器作为电动汽车动力源，外特性直接关系到电动汽车的性能。本文从电机控制理论方面，讨论了系统外特性，并用理论来分析系统外特性试验结果。为内置式永磁同步电机及其控制的设计、检测提供了参考。
关键词：电动汽车；内置式永磁同步电机；电机控制理论；系统外特性
Abstract: At present, a part of the domestic electric vehicles use the interior permanent magnet synchronous motors, the interior permanent magnet synchronous motors and its controller is used as a power source for electric vehicles, the external characteristic is directly related to the performances of electric vehicle. From the aspects of motor control theory, this paper discussed system external characteristic, and used the theory to analyze the test results of system characteristics. This paper provided the reference for the electric vehicles design and detection.
Key words: electric vehicle；interior permanent magnet synchronous motor；motor control theory；system external characteristics