Effect of the deadtime on the ZVS in phase-shifted full-bridge DC/DC converter for electric vehicle application

Author

Hangyu Xu ; Bo Rao ; Bin Yi ; Quanlin Li ; Yonghua Ding ; Yuan Pan

Author_Institution

State Key Lab. of Adv. Electromagn. Eng. & Technol., Huazhong Univ. of Sci. & Technol., Wuhan, China

fYear

2014

fDate

Aug. 31 2014-Sept. 3 2014

Firstpage

1

Lastpage

5

Abstract

Phase-shifted full-bridge (PSFB) DC/DC converter with synchronous rectifiers, which has the advantages of high conversion efficiency, high power density, and low electromagnetic interference, is a widely used topology for power conversion in the electric vehicle. But it is not easy to achieve zero voltage switching (ZVS) operation under light load condition because the energy in leakage inductance is insufficient. This paper proposes that ZVS operation is also closely related to the deadtime of lagging-leg switches. Analysis and optimized design is presented. Feasibility and effectivity are verified with simulation and experimental results of a prototype converter.

Keywords

DC-DC power convertors; electric vehicles; rectifiers; zero voltage switching; ZVS operation; deadtime; electric vehicle; electromagnetic interference; lagging-leg switches; leakage inductance; optimized design; phase-shifted full-bridge dc/dc converter; power conversion; power density; prototype converter; synchronous rectifiers; zero voltage switching; Capacitance; Inductance; MOSFET; Power electronics; Rectifiers; Switching loss; Zero voltage switching;

fLanguage

English

Publisher

ieee

Conference_Titel

Transportation Electrification Asia-Pacific (ITEC Asia-Pacific), 2014 IEEE Conference and Expo

Conference_Location

Beijing

Print_ISBN

978-1-4799-4240-4

Type

conf

DOI

10.1109/ITEC-AP.2014.6941228

Filename

6941228