Power-split Hybrid Electric Vehicle Acceleration Performance Optimization

doi:10.3969/j.issn.1000-565X.2015.11.014

Journal of South China University of Technology (Natural Science Edition) ›› 2015, Vol. 43 ›› Issue (11): 96-104.doi: 10.3969/j.issn.1000-565X.2015.11.014

• Automotive Engineering • Previous Articles Next Articles

Power-split Hybrid Electric Vehicle Acceleration Performance Optimization

Received:2015-03-12 Revised:2015-08-08 Online:2015-11-25 Published:2015-10-01
Contact: 王晨（１９８６－），男，博士生，主要从事混合动力变速器控制技术研究． E-mail:w_chen_ev＠sina.com
About author:王晨（１９８６－），男，博士生，主要从事混合动力变速器控制技术研究．
Supported by:
Supported by the National High-Tech R&D Program(863 Program) of China (2011AA11A207) and the National Natural Science Foundation of China(51275355)

Abstract

Abstract: Acceleration performance is one of the important vehicle performance indicators. To solve the optimization problem of acceleration performance, dynamic programming problem is established by transforming the full-load acceleration progress to Multi-level decision-making process according to vehicle speed. Models for the novel power-split hybrid vehicle were established and the globally optimized control strategy was obtained on Matlab platform. Dual-motor torque figure was established while motor speed ratio and battery power band were defined to analyze the control strategy. The vehicle test result of optimization for power performance showed, 0ne-hundred-kilometers acceleration time was decreased by 15.7 percent. The control strategy based on dynamic programming significantly improves the vehicle acceleration performance.

Key words: hybrid powertrain, acceleration control, hybrid electric vehicle, dynamic programming, optimization

CLC Number:

U469.72N

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Power-split Hybrid Electric Vehicle Acceleration Performance Optimization

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