Operating optimization at light load of series resonant DC-DC converter with duty-adjusted frequency control in EVs on-board charger

Author

Seung-Hee Ryu ; Dong-Hee Kim ; Min-Jung Kim ; Byoung-Kuk Lee ; Jong-Soo Kim

Author_Institution

Coll. of Inf. & Commun. Eng., SungKyunKwan Univ., Suwon, South Korea

fYear

2012

fDate

9-12 Oct. 2012

Firstpage

777

Lastpage

782

Abstract

In this paper, an effective output voltage control method using asymmetrical duty cycle control to improve operating performance at a CV charging mode of full-bridge series resonant dc-dc converter applied to an on-board charger in Electric Vehicles (EVs) is presented. The proposed control scheme has higher efficiency and better operation performance than a conventional method at light load without the additional hardware. The theoretical analysis has been described in detail and the validity is verified by simulation and experiment through a 3.3kW prototyped on-board charger with electronic load.

Keywords

DC-DC power convertors; battery powered vehicles; frequency control; resonant power convertors; voltage control; CV charging mode; EV on-board charger; asymmetrical duty cycle control; duty-adjusted frequency control; effective output voltage control method; electric vehicles; electronic load; full-bridge series resonant DC-DC converter; power 3.3 kW; theoretical analysis; Frequency modulation; Resistance; Resonant frequency; Switches;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicle Power and Propulsion Conference (VPPC), 2012 IEEE

Conference_Location

Seoul

Print_ISBN

978-1-4673-0953-0

Type

conf

DOI

10.1109/VPPC.2012.6422549

Filename

6422549