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兵工学报 ›› 2021, Vol. 42 ›› Issue (8): 1580-1591.doi: 10.3969/j.issn.1000-1093.2021.08.002

• 论文 • 上一篇    下一篇

基于分层控制的混合动力车辆实时能量管理策略

陈路明, 廖自力, 马晓军, 刘春光   

  1. (陆军装甲兵学院 兵器与控制系, 北京 100072)
  • 上线日期:2021-09-15
  • 通讯作者: 廖自力(1974—),男,教授,博士生导师 E-mail:zili_liao@163.com
  • 作者简介:陈路明(1991—), 男, 博士研究生。 E-mail: 295170692@qq.com
  • 基金资助:
    国家自然科学基金项目(51507190); 武器装备预先研究项目(301051102)

Hierarchical Control-based Real-time Energy Management Strategy for Hybrid Electric Vehicles

CHEN Luming, LIAO Zili, MA Xiaojun, LIU Chunguang   

  1. (Department of Weapons and Control, Army Academy of Armored Forces, Beijing 100072, China)
  • Online:2021-09-15

摘要: 针对混合动力车辆中多动力源协调控制困难、燃油经济性不佳的问题,提出了一种基于分层控制的实时能量管理策略。通过分析车辆混合动力系统的部件特性,对不同动力源进行了数学建模;采用小波滤波层将负载需求功率分频为高、低两个部分,并将高频功率分配给超级电容等功率型动力源,将低频功率作为模型预测控制层的参考输入,以燃油经济性、电池荷电状态和母线电压为优化目标,求解柴油发电机组和动力电池组等能量型动力源的功率指令,依托dSPACE和RTLAB硬件在环仿真平台对能量管理策略进行验证。结果表明:在复合城市排放循环测试工况下,所提出的分层能量管理策略比基于模糊规则的能量管理策略燃油经济性提升了13.05%,比基于单一模型预测控制的能量管理策略燃油经济性提升了5.79%;分层能量管理策略下,能量型动力源的目标功率变化更加平缓,功率型动力源介入工作更加频繁,证明了该能量管理策略在提升燃油经济性和发挥动力源特性方面的有效性。

关键词: 混合动力车辆, 小波滤波, 模型预测控制, 能量管理策略

Abstract: A real-time energy management strategy based on hierarchical control is proposed for the coordinated control of multiple power sources and low fuel economy of hybrid electric vehicles (HEVs). The mathematical models of different power sources are established by analyzing the topology of whole vehicle and the component characteristics of hybrid electric system. The wavelet filter layer is used to divide the full load power into high and low parts, and the high-frequency power is allocated to power-type power sources such as supercapacitors. The low-frequency power is used as the reference input of the model predictive control (MPC) layer. The fuel economy, power battery state of charge (SOC), and DC bus voltage are the optimization items to obtain the optimal control instructions of energy-type power sources such as diesel engine-generator sets and power battery packs. Some representative simulation experiments were performed on dSPACE and RTLAB hardware-in-loop (HIL) simulation platform to verify the effectiveness of the proposed energy management strategy. The results show that, under the condition of CUEDC cycle driving, the fuel economy of the proposed hierarchical energy management strategy is increased by 13.05% compared with the energy management strategy based on fuzzy rules, and the fuel economy is improved by 5.79% compared with the energy management strategy based on a single MPC. Besides, the target power of each energy-type power source under the hierarchical energy management strategy changes more gently, while the power-type power source is involved in the power adjustment process more frequently, which proves the effectiveness of the proposed energy management strategy in improving fuel economy and exerting power source characteristics.

Key words: hybridelectricvehicle, waveletfiltering, modelpredictivecontrol, energymanagementstrategy

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