Multiple Input Bidirectional DC/DC Converter for Energy Supervision in Fuel Cell Electric Vehicles

Author

Liu, Shengyong ; Zhang, Xing ; Guo, Haibin ; Xie, Jun

Author_Institution

Sch. of Electr. Eng. & Autom., HeFei Univ. of Technol., Hefei, China

fYear

2010

fDate

25-27 June 2010

Firstpage

3890

Lastpage

3893

Abstract

A hybrid power system for fuel cell electric vehicles(FCEV) was proposed. The fuel cell and the battery and/or ultracapacitor are connected to the same voltage bus through an appropriate unidirectional dc-dc converter (UDC) and a buck/boost bidirectional DC/DC converter(BDC), respectively. The battery and the ultracapacitor are auxiliary energy source, which provides or absorbs the dynamic power when the load varies and the fuel cell cannot respond immediately, so the system dynamic characteristics are improved. A multiple input dc-dc converter (MIDC) devoted to combine the power flowing from combined on-board energy sources is presented; Finally, the analysis and design validation are verified through the simulation and experiment.

Keywords

DC-DC power convertors; fuel cell vehicles; supercapacitors; buck/boost bidirectional DC/DC converter; energy supervision; fuel cell electric vehicles; hybrid power system; multiple input bidirectional DC/DC converter; multiple input dc-dc converter; on-board energy sources; ultracapacitor; unidirectional dc-dc converter; Batteries; Control systems; DC-DC power converters; Fuel cells; Supercapacitors; Vehicle dynamics; battery; bidirectional DC/DC converter; energy flow supervision; fuel cell electric vehicles; ultracapacitor (UC);

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical and Control Engineering (ICECE), 2010 International Conference on

Conference_Location

Wuhan

Print_ISBN

978-1-4244-6880-5

Type

conf

DOI

10.1109/iCECE.2010.949

Filename

5629549