摘要
分析混合动力汽车匀速下坡再生制动过程;基于蓄电池充电效率模型、蓄电池温升模型及发电机效率模型,分别以混合动力汽车瞬时再生制动能量回收量最大和总制动能量回收量最大为优化目标,提出了瞬时再生制动优化控制策略和全局优化控制策略;分析了蓄电池温度对混合动力汽车再生制动能量回收效率的影响,计算了汽车在不同坡度和坡长的路况上再生制动能量回收效率,结果表明:全局优化控制策略优于瞬时优化控制策略,且坡度愈大或坡长愈长时,采用全局优化控制策略提高再生制动能量回收效率的效果愈显著。
The regenerative braking process of hybrid electric vehicles （HEVs） cruising downhill was analyzed. Based on the charging efficiency, temperature model of battery, and efficiency model of the generator, instantaneous and global optimal control strategies were proposed, with the goal of maximum of instantaneous regenerative braking energy and total regenerative braking energy respectively. Regenerative braking energy efficiency on roads of differing slopes and slope lengths were obtained. The results show that global optimal control strategy is better than instantaneous optimal control strategy, and the steeper the slope or the longer the slope is, the more distinct the increase of regenerative braking energy efficiency with a global optimal control strategy is. The influence of battery temperature on efficiency of regenerative braking energy of HEVs was also discussed.
出处
《重庆大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2008年第9期965-970,共6页
Journal of Chongqing University
基金
国家自然科学基金资助项目(50475067)
重庆市自然科学基金资助项目(CSTC
2007BB0116)
关键词
混合动力汽车
再生制动
控制策略
蓄电池效率
蓄电池温度
hybrid electric vehicles （HEV）
regenerative braking
control strategy
battery efficiency
battery temperature
