Dynamic Modeling and Simulation on a Hybrid Power System for Electric Vehicle Applications

Energies

Hong-Wen He¹  Rui Xiong¹ 

[1] National Engineering Laboratory for Electric Vehicles, Beijing Institute of Technology, Beijing, 10081, China; E-Mail:

关键词: ultracapacitor;    battery;    hybrid power system;    dynamic modeling;    electric vehicles;   

DOI  :  10.3390/en3111821

来源: mdpi

【 摘 要 】

Hybrid power systems, formed by combining high-energy-density batteries and high-power-density ultracapacitors in appropriate ways, provide high-performance and high-efficiency power systems for electric vehicle applications. This paper first establishes dynamic models for the ultracapacitor, the battery and a passive hybrid power system, and then based on the dynamic models a comparative simulation between a battery only power system and the proposed hybrid power system was done under the UDDS (Urban Dynamometer Driving Schedule). The simulation results showed that the hybrid power system could greatly optimize and improve the efficiency of the batteries and their dynamic current was also decreased due to the participation of the ultracapacitors, which would have a good influence on batteries’ cycle life. Finally, the parameter matching for the passive hybrid power system was studied by simulation and comparisons.

【 授权许可】

CC BY   
© 2010 by the authors; licensee MDPI, Basel, Switzerland.