考虑电池荷电状态的混合动力汽车复合电源协同控制  

Hybrid electric vehicle hybrid power supply cooperative control considering battery state of charge

作　　者：李房云 夏容[1] 张怡欣 LI Fang-yun;XIA Rong;ZHANG Yi-xin(Department of Information Electronics,Science and Technology College of NCHU,J iujiang 332020,China)

机构地区：[1]南昌航空大学科技学院信息电子学部,江西九江332020

出　　处：《吉林大学学报（工学版）》2024年第4期1114-1119,共6页Journal of Jilin University:Engineering and Technology Edition

基　　金：江西省教育厅教学改革研究项目(JXJG-20-35-1)。

摘　　要：针对复合电源的协同控制过程易受电池性能、电流效应、汽车速度等问题的影响,导致复合电源电流分配较不稳定的问题,提出了一种考虑电池荷电状态的混合动力汽车复合电源协同控制方法。该方法首先通过构建二阶电阻-电容(RC)等效电路模型得到电池荷电状态的估算值;其次在估算值的基础上计算出复合电源的效率特性;最后采用自适应滤波器功率分配控制算法,通过构建目标函数和约束条件实现超级电容器与蓄电池的功率分担,进而完成混合动力汽车复合电源的协同控制。仿真结果表明,本文方法的电流分配情况较好,控制后的汽车能耗低,能耗始终控制在0.6~2.7 kW/h。The coordinated control of compound power supply is an indispensable step in the normal driving process of hybrid electric vehicles.However,the cooperative control process is easily affected by problems such as battery performance,current effect,and vehicle speed,resulting in unstable current distribution of the composite power supply.Therefore,a hybrid electric vehicle hybrid power cooperative control method considering the state of charge of the battery is proposed.The method first obtains the estimated value of the battery state of charge by constructing a second-order RC equivalent circuit model,then calculates the efficiency characteristics of the hybrid power supply based on the estimated value,and finally uses the adaptive filter power allocation control algorithm to realize the power sharing between the supercapacitor and the battery by constructing the objective function and constraint conditions,thus completing the cooperative control of the hybrid power supply of the hybrid electric vehicle.The simulation results show that the current distribution of the proposed method is good,the energy consumption of the controlled vehicle is low,and the energy consumption is always controlled within the range of 0.6~2.7 kW/h.

关 键 词：二阶RC等效电路模型 放电效率 参数优化 电流补偿 功率分配控制 

分 类 号：TM912[电气工程—电力电子与电力传动]