摘要
研究了并联式混合动力系统的电机模拟发动机倒拖再生制动.当整车处于滑行工况时,离合器断开,处在发电模式的电机提供负转矩来模拟发动机倒拖转矩对蓄电池充电,从而回收原本由发动机倒拖制动消耗的整车滑行能量.考虑电机发电效率和蓄电池充电效率,提出以进入蓄电池的实际电能最大化为目标的电机转矩优化控制算法,并确定了电机最优化转矩和机械式自动变速箱最优化档位控制规律.仿真结果表明:运用电机转矩优化控制算法的电机模拟发动机倒拖再生制动,蓄电池电荷状态(SOC)的增幅明显提高.
This paper deals with the emulated engine compression braking （EECB） of parallel hybrid electric system. When the vehicle is in a coasting mode, the electric clutch is disengaged, and the electric motor （EM） provides negative torque to emulate the engine drag torque for charging the battery, thus making full use of the coasting energy. Then, by taking into account the EM generation efficiency and the battery charging efficiency, an EM torque optimization （ETO） control algorithm is proposed to maximize the actual electric power recuperated by the battery and to obtain the optimal EM torque and the corresponding optimal shift-control rule of the automatic me- chanical transmission. Simulated results indicate that the EECB with ETO offers a greatly improved battery state of charge.
出处
《华南理工大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2009年第7期62-68,共7页
Journal of South China University of Technology(Natural Science Edition)
基金
国家"863"高技术计划项目(2005AA501020)
关键词
混合动力系统
模拟发动机倒拖制动
电机转矩优化
效率
hybrid power system
emulated engine compression braking
electric-motor torque optimization
effi-ciency
