电动大客车牵引电机控制系统的研究

The Research for Propulsion System of Electric Bus

针对一种具有永磁和增磁绕组复合励磁方式的新型直流牵引电机 ,设计出一种具有自动弱磁调速功能的牵引电机调速系统 .实验给出了该电机的固有性能参数和自动弱磁调速系统中牵引电机的扭矩 转速特性 .实验结果证明 ,所设计的系统在电动大客车上使用效果良好 ,能很好地满足电动大客车的动力特性要求 .

A new kind of tracion motor designed for the electric bus is introduced in this paper.The excitation of the motor includes permanent magnet and coils excitation.The speed adjusted system for the traction motor is proposed and applied on an electric bus.A brand new way of the automatic magnetic field weakening is invented in the speed adjusted system.The inherent performance of the motor is given by expariment.The curve of torque speed for the motor in the speed adjusted system is offered.The result shows that the speed adjusted system can be applied in the electric bus satisfactorily.