地铁车辆用永磁同步牵引电动机地面试验研究

Experimental Research of Permanent Magnet Synchronous Traction Motor for Metro Vehicle

在对地铁车辆牵引系统介绍的基础上,阐述了永磁同步牵引电动机的数学模型。根据永磁同步牵引电动机的特性及地铁车辆的运行特点,在地面试验平台上实现了永磁同步牵引电动机的恒转矩、弱磁控制和高速时的带速度重新投入控制,并给出了试验结果。从系统效率的角度与异步牵引系统进行了对比,结果表明,永磁同步牵引系统效率高。地面试验为永磁同步牵引电动机在地铁车辆上的装车应用奠定了坚实的基础。

Based on the introduction of traction system of metro vehicle, the mathematic model for permanent magnet synchronous motor （PMSM） is elaborated. According to the characteristics of PMSM and the metro vehicle operation, the constant torque control, flux weakening control and restart control with motor rotation have been realized on the ground test platform. The experiment results have been given and the system efficiency has been compared with induction motor traction system, which proves that the PMSM traction has the merit of high efficiency. The ground test of PMSM traction system establishes a firm foundation for the application on metro vehicle.