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兵工学报 ›› 2021, Vol. 42 ›› Issue (10): 2242-2250.doi: 10.3969/j.issn.1000-1093.2021.10.020

• 论文 • 上一篇    下一篇

重型车辆多挡并联混合动力系统的联合优化控制策略

王玮琪1, 王伟达1,2, 孙晓霞3, 张渊博1, 刘城1, 项昌乐1,2   

  1. (1.北京理工大学 机械与车辆学院, 北京 100081; 2.北京理工大学 重庆创新中心, 重庆 401122;3.中国北方车辆研究所, 北京 100072)
  • 发布日期:2021-11-03
  • 通讯作者: 王伟达(1980—),男,副教授 E-mail:wangwd0430@163.com
  • 作者简介:王玮琪(1999—), 女, 硕士研究生。 E-mail: wangweiqi0048@163.com
  • 基金资助:
    国家自然科学基金项目(51575043、51705480、U1564210)

The Joint Optimal Control Strategy of Multi-gear Parallel Hybrid Power System of Heavy-duty Vehicle

WANG Weiqi1, WANG Weida1,2, SUN Xiaoxia3, ZHANG Yuanbo1, LIU Cheng1, XIANG Changle1,2   

  1. (1.School of Mechanical Engineering,Beijing Institute of Technology,Beijing 100081,China;2.Chongqing Innovation Center,Beijing Institute of Technology,Chongqing 401122,China;3.North China Vehicle Research Institute,Beijing 100072,China)
  • Online:2021-11-03

摘要: 重型车辆机电多挡并联混合动力系统中电机功率在变速器内部与机械功率耦合,发动机和电机都具有多个独立挡位,机电能量、功率分配与挡位关系复杂,功率分配和挡位确定及优化难度大。为统筹多挡并联混合动力系统的功率分配和挡位选择,提出功率与挡位联合优化的能量管理优化策略。建立系统在不同模式下的综合效率模型,定义经济性能量管理目标,定义成本函数对混合动力系统的换挡成本进行评价。以系统综合效率和换挡成本最优设计联合优化控制策略,用自适应模拟退火算法进行求解,同时优化变速机构挡位与转矩分配比例。结果表明:联合优化控制策略解决了系统转矩和挡位的耦合分配难题;该方法与经济性换挡规律规则相比可减少约4.84%的油耗,与初始单参数换挡规律相比可减少约14.74%的油耗;运用该方法可使混动系统的经济性有较大提升。

关键词: 重型车辆, 多挡并联混合动力系统, 联合优化控制策略, 成本函数, 换挡规律

Abstract: In the multi-gear parallel hybrid power system of heavy-duty vehicle,the motor power is coupled with the mechanical power inside the transmission,and both the engine and the motor have multiple independent gears.The relationship among electromechanical energy and power distribution and gear is complicated,so it is difficult to determine and optimize the power distribution and gear selection.To coordinate the power distribution and gear selection of multi-gear parallel hybrid power system,an energy management strategy is proposed for joint optimization of power and gear,a system comprehensive efficiency model under different working modes is established,the economy energy management goals are defined,the cost function to evaluate the shift cost of hybrid system is defined,and an joint optimization control strategy is designed for the system's comprehensive efficiency and shifting cost.The adaptive simulated annealing algorithm is used for solving optimal torque distribution proportion and shift gear.The simulated results show that the joint optimal control strategy can be used to solve the problem of coupling distribution of torque and gear of the system,and reduce the fuel consumption by 4.8% compared to the rule strategy using the economy shift law and by 14.7% compared to the rule strategy using the initial shift law,which can greatly improve the economy of the hybrid power system.

Key words: heavy-dutyvehicle, multi-gearparallelhybridpowersystem, jointoptimalcontrolstrategy, costfunction, shiftrule

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