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纯电动客车用BLDCM双闭环控制系统建模与仿真

, PP. 147-153

Keywords: 汽车工程,纯电动客车,MATLAB仿真,无刷直流电机,车速-电流双闭环控制系统

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Abstract:

?为了给电动汽车的研发提供参考,针对某型城市公交中巴客车改装的纯电动汽车,设计了无刷直流电机(BLDCM)的车速-电流双闭环控制系统,在MATLAB环境下搭建了该系统的动态仿真模型,并从空载(负载)运行、换挡运行、循环工况运行3个方面进行了仿真试验。研究结果表明:相比于传统的仅针对电机的驱动控制系统,该系统直接以车速为控制对象,可以将整车控制与电机控制有机结合起来;测速装置从电机转移到车轮上,利于降低BLDCM的设计复杂度和制造成本;该系统的电机调速控制效果与传统的电机驱动控制系统相当,并可有效控制汽车换挡带来的车速突变、迅速响应频繁变化的车速需求,能够满足多挡位纯电动客车的城市道路行驶要求。

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