Design of a 2.5kW 400V→M2V high-efficiency DC/DC converter using a novel synchronous rectification control for electric vehicles

Author

Chen Duan ; Wei Guo ; Bai, Kevin Hua ; Zhong Nie ; Mengyang Zhang ; Householder, Fred ; Krozek, Dennis

Author_Institution

Dept. of Electr. & Comput. Eng., Kettering Univ., Flint, MI, USA

fYear

2013

fDate

15-19 Sept. 2013

Firstpage

1082

Lastpage

1086

Abstract

This paper proposes the design and development of a 2.5kW 400V→12V high-efficiency DC/DC converter with a wide input voltage range (450V~220VDC) and output voltage range (16V~6VDC). The designed DC/DC converter will be used in the electric vehicle as an electric alternator. An LLC half bridge topology is adopted as the primary side of the isolated DC/DC converter. For the secondary side, a novel rectification control strategy is developed to turn on/off the rectifier MOSFETs by actively tracking the exact triggering moments. A 2.5kW prototype to charge the on-board 12V battery was built to experimentally verify the theoretical analysis. The overall system efficiency was ~92% and the maximum is 93.2%.

Keywords

DC-DC power convertors; alternators; battery powered vehicles; power MOSFET; rectification; LLC half bridge topology; electric alternator; electric vehicles; high-efficiency DC-DC converter design; on-board battery; power 2.5 kW; rectifier MOSFET; synchronous rectification control strategy; triggering moment tracking; voltage 400 V to 12 V; Batteries; DC-DC power converters; Delay effects; Delays; MOSFET; Pulse width modulation; Rectifiers;

fLanguage

English

Publisher

ieee

Conference_Titel

Energy Conversion Congress and Exposition (ECCE), 2013 IEEE

Conference_Location

Denver, CO

Type

conf

DOI

10.1109/ECCE.2013.6646824

Filename

6646824