• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报 ›› 2021, Vol. 57 ›› Issue (14): 77-86.doi: 10.3901/JME.2021.14.077

• 特邀专栏:电源系统设计、管理与大数据 • 上一篇    下一篇

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电动汽车混合储能系统的事件触发无差拍控制

王本斐1, 彭卫文1, 张荣辉1, MANANDHAR Ujjal2, 胡晓松3   

  1. 1. 中山大学智能工程学院广东省智能交通系统重点实验室 广州 510275;
    2. 南洋理工大学电气与电子工程学院 新加坡 639798;
    3. 重庆大学机械传动国家重点实验室 重庆 400044
  • 收稿日期:2020-07-30 修回日期:2021-04-20 出版日期:2021-09-15 发布日期:2021-09-15
  • 通讯作者: 张荣辉(通信作者),男,1981年出生,副教授,博士研究生导师。主要研究方向为智能车辆与辅助驾驶、新能源汽车等。E-mail:zhangrh25@mail.sysu.edu.cn
  • 作者简介:王本斐,男,1989年出生,副教授,硕士研究生导师。主要研究方向为新能源汽车、混合储能系统、微电网等。E-mail:wangbf8@mail.sysu.edu.cn
  • 基金资助:
    国家自然科学基金(51775565)、广东省基础与应用基础研究基金(2020A1515110968)和广州市科技计划(202007050004)资助项目

Event-triggered Deadbeat Control for the Hybrid Energy Storage System in Electric Vehicles

WANG Benfei1, PENG Weiwen1, ZHANG Ronghui1, MANANDHAR Ujjal2, HU Xiaosong3   

  1. 1. Guangdong Provincial Key Laboratory of Intelligent Transport System, School of Intelligent Systems Engineering, Sun Yat-sen University, Guangzhou 510275;
    2. School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798;
    3. State Key Lab of Mechanical Transmission, Chongqing University, Chongqing 400044
  • Received:2020-07-30 Revised:2021-04-20 Online:2021-09-15 Published:2021-09-15

摘要: 混合储能系统具有高功率密度和高能量密度的性能优势,已经被广泛应用于电动汽车。以电动汽车的电池-超级电容混合储能系统为研究对象,针对传统控制方法中快速动态响应和计算负荷的矛盾,提出一种基于事件触发无差拍控制的方法。该控制方法继承了无差拍控制方法响应速度快、过冲量小的优点,可以在一个控制周期内计算获得最优控制信号,从而充分利用混合储能系统应对复杂工况,以达到稳定母线电压的目的;同时,通过引入事件触发控制策略,根据系统状态消除冗余计算,可以在保持控制性能的前提下有效降低计算负荷。基于Matlab/Simulink构建了电池-超级电容混合储能的数字仿真系统,仿真试验结果表明所提出的事件触发无差拍控制具有良好的控制效果:①可以将直流母线电压纹波稳定控制在参考值1.4%,接近传统无差拍控制的1.1%,性能上满足要求; ②计算执行平均次数是传统方法的61.2%,计算负荷减小了39.8%;③引入事件触发控制机制,可以有效消除冗余的开关动作,提高混合储能系统的整体效率。最后,围绕中国电动汽车的行驶工况,基于OPAL-RT的硬件在环试验,进一步验证事件触发无差拍控制方法在电池-超级电容混合储能系统的有效性,研究结果为电动汽车混合储能系统的控制提供了一种参考。

关键词: 事件触发控制, 无差拍控制, 混合储能, 电动汽车

Abstract: Hybrid energy storage systems(HESSs) with advantages of high power density and high energy density have been widely adopted in electric vehicles(EVs). An event-triggered deadbeat control method is proposed for the battery-supercapacitor HESS of EVs, aiming at solving the contradiction between fast dynamic response and computational burden in the traditional control methods. The proposed method inherits the advantages of fast response and small overshot of deadbeat control method, it can generate the optimal control signal within one control cycle to make full use of HESS to cope with complex working conditions for stabilizing the bus voltage. Meanwhile, the event-triggered control strategy is introduced to eliminate the unnecessary calculations based on the system state, which can significantly reduce the calculation burden on the premise of maintaining regulation performance. A digital simulation system of the battery-supercapacitor HESS is built in Matlab/Simulink, and the simulation results indicate that the proposed method has the advantages as follows:① it can regulate the DC bus voltage with the variation of 1.4%, which is close to 1% of traditional deadbeat control method; ② its average number of operations is about 61.2% of the traditional deadbeat control method, and the computational burden can be reduced by 39.8%; ③ it introduces event-triggered control mechanism to eliminate redundant switching actions and improve the overall efficiency of HESS. Finally, considering the driving cycling of EVs in China, the effectiveness of the event-triggered no-beat control method in the battery-supercapacitor HESS is further verified based on the hardware-in-loop experimental platform based on OPAL-RT real-time simulator. The proposed method provides a reference of the control strategy design for the HESS of EVs.

Key words: event-triggered control, deadbeat control, hybrid energy storage system, electric vehicle

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