无刷直流电动机回馈制动控制策略研究  

Research on regenerative braking control strategy of brushless DC motor

作　　者：郭炅 罗佳琪 GUO Jiong;LUO Jiaqi(Intelligent Manufacturing College,Wuhan Guanggu Vocational College,Wuhan 430070,Hubei,China)

机构地区：[1]武汉光谷职业学院智能制造学院,湖北武汉430070

出　　处：《上海电机学院学报》2022年第6期352-358,共7页Journal of Shanghai Dianji University

摘　　要：回馈制动能有效延长电动汽车的续驶里程,但电动机的制动平稳性以及制动时间长短等制动效果直接影响着汽车的舒适性和安全性。在保证电动机制动平稳性的前提下,尽量缩短制动时间。考虑到双开关调制的制动停止时间较短,单开关调制在较低转速下也可稳定运行,提出了一种设置临界转速、基于模型预测电流控制的双单开关分阶段调制回馈制动控制策略。介绍了无刷直流电动机(BLDCM)控制系统双开关和单开关调制的回馈制动原理,分别推导出两种调制方法下的回馈制动预测模型。建立目标函数,通过滚动优化控制回馈制动电流保持恒定,并通过Matlab/Simulink仿真软件进行了仿真验证。结果显示:在保证制动电流稳定的前提下,相比单开关调制,参考电流为10A时,本文方法使制动时间缩短了34.4%,验证了方法的有效性。Regenerative braking can effectively extend the driving range of electric vehicles,but braking effects such as motor braking stability and braking time directly affect the comfort and safety of the vehicle.This paper intends to shorten the braking time on the premise of ensuring the braking stability of the motor.Considering that the braking stop time of double-switch modulation is less,and the single-switch modulation mode can operate stably at lower speed,a regenerative braking control strategy based on model predictive current control with dual-single switch modulation phased by critical speed is proposed.Firstly,the regenerative braking principle of dualswitch and single-switch modulation in brushless DC motor(BLDCM)control system is introduced,and the prediction models of regenerative braking under the two modulation methods are deduced respectively.Then the objective function is established,and the regenerative braking current is kept constant by rolling optimization control.Finally,the Matlab/Simulink simulation software is used for simulation verification.The results show that,on the premise of ensuring the stability of the braking current,compared with the single-switch modulation,the proposed method shortens the braking time by 34.4% when the reference current is 10A.The effectiveness of the proposed method is verified.

关 键 词：无刷直流电动机(BLDCM) 电动汽车 模型预测 电流控制 回馈制动 

分 类 号：TM351[电气工程—电机]