摘要
以三轴纯电动铰接客车为研究对象,针对单电机集中式驱动构型存在的动力系统布置困难、传动链长等问题,构建基于六轮毂电机分布式驱动的三轴纯电动铰接客车构型,完成关键总成参数匹配;针对前、中、后轴电机扭矩分配问题,提出以系统效率最佳为目标的扭矩优化分配策略,并基于MATLAB/Simulink搭建了扭矩优化分配模型;基于AVL Cruise和MATLAB/Simulink搭建了整车联合仿真模型,在满足整车动力性和经济性指标的前提下,通过与单电机集中式驱动构型的对比可知:整车0~50 km/h的加速时间减少3.1 s,最高车速提升5 km/h,最大爬坡度提高1.3%;满载CCBC工况下,百公里能耗降低11.51%,续驶里程增加27 km;提出的扭矩优化分配策略能将整车需求扭矩合理分配给各电机,并可优化电机工作区间,有效降低整车能耗。
Taking the three-axle pure-electric articulated bus as the research object,aiming at the problems of single motor centralized drive configuration,such as the difficulty of power system layout and long transmission chain,the configuration of three-axle pure-electric articulated bus based on in-wheel motor distributed drive was constructed,and the key assembly parameters were matched.Aiming at the torque distribution problem of front,middle and rear axle motors,the optimal torque distribution strategy was proposed for the target of the best system efficiency and torque optimization distribution model are built based on MATLAB/Simulink.The vehicle joint simulation model is built based on AVL Cruise and MATLAB/Simulink.On the premise of meeting the vehicle power and economic indicators,through the comparison with the single motor centralized drive configuration,it can be seen that:1)the acceleration time of the whole vehicle from 0 to 50 km/h is reduced by 3.1 s,the maximum speed is increased by 5 km/h,and the maximum climbing gradient is increased by 1.3%.2)under the full load CCBC condition,the energy consumption per 100 km is reduced by 11.51%,and the driving range is increased by 27 km.3)the optimal torque distribution strategy can reasonably distribute the required torque to each motor,optimize the motor working range and effectively reduce vehicle energy consumption.
作者
邵长江
杨坤
王杰
谭迪
付宏勋
刘国栋
SHAO Changjiang;YANG Kun;WANG Jie;TAN Di;FU Hongxun;LIU Guodong(School of Transportation and Vehicle Engineering,Shandong University of Technology,Zibo 255000,Shandong,China;Shandong Yiwei Automobile Technology Co.,Ltd.,Zibo 255000,Shandong,China;Weichai Power Co.,Ltd.,Weifang 261000,Shandong,China)
出处
《机械科学与技术》
CSCD
北大核心
2022年第8期1261-1269,共9页
Mechanical Science and Technology for Aerospace Engineering
基金
国家自然科学基金项目(51605265,51775320)
山东省重点研发计划项目(2018GGX105010)。
关键词
三轴纯电动铰接客车
轮毂电机
扭矩优化分配
控制策略
three-axle pure-electric articulated bus
in-wheel motor
optimal torque distribution
control strategy
