Energy management strategy for hybrid electric vehicle based on system efficiency and battery life optimization

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• 作者：Yang Yang (1)
  Ling Su (2)
  Datong Qin (1)
  Hui Gong (1)
  Jianfeng Zeng (1)
  
• 关键词：hybrid electric vehicle ; energy management strategy ; efficiency optimization ; battery state of charge ; fuel ; electric conversion factor ; U 462.3
• 刊名：Wuhan University Journal of Natural Sciences
• 出版年：2014
• 出版时间：June 2014
• 年：2014
• 卷：19
• 期：3
• 页码：269-276
• 全文大小：
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• 作者单位：Yang Yang (1)
  Ling Su (2)
  Datong Qin (1)
  Hui Gong (1)
  Jianfeng Zeng (1)
  
  1. State Key Laboratory of Mechanical Transmission, Chongqing University, Chongqing, 400044, China
  2. Chang鈥檃n Renewable Energy Automotive Limited Company, Chongqing, 400023, China
  
• ISSN：1993-4998

文摘

A novel method to calculate fuel-electric conversion factor for full hybrid electric vehicle (HEV) equipped with continuously variable transmission (CVT) is proposed. Based on consideration of the efficiency of pivotal components, electric motor, system efficiency optimization models are developed. According to the target of instantaneous optimization of system efficiency, operating ranges of each mode of power-train are determined, and the corresponding energy management strategies are established. The simulation results demonstrate that the energy management strategy proposed can substantially improve the vehicle fuel economy, and keep battery state of charge (SOC) change in a reasonable variation range.