纯电动物流车用PMSM降开关损耗控制

物流车是城市内部运送货物的重要交通工具,具有运行距离短、启停频率高、运行时间长的特点。城市内部物流车都逐步采用纯电动物流车代替传统的燃油车。针对物流车运行特点,文章对电动物流车电机控制算法进行优化,在考虑不同工况下使用不同的开关频率,降低开关损耗,减少控制器发热。通过对降低开关损耗控制方法与传统控制方法在不同车辆运行工况下对比,电机控制器发热均有所降低,同时电机控制器效率有所增加。

Switching Loss Reduction Control of PMSM for Pure Electrics Vehicle

Logistics vehicle is an important means of transportation of goods within the city,with the characteristics of short running distance,high starting and stopping frequency and long running time.In view of the city internal logistics vehicles are gradually using pure electric logistics vehicles to replace the traditional fuel vehicles.According to the operation characteristics of the logistics vehicle,the motor control algorithm of the electric logistics vehicle is optimized in this paper.Different switching frequency is used under different working conditions to reduce the switch loss and reduce the heating of the controller.By comparing the control method of reducing switching loss with the traditional control method under different vehicle operating conditions,the heating of motor controller is reduced,and the efficiency of motor controller is increased.