Title :
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
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;
Conference_Titel :
Vehicle Power and Propulsion Conference (VPPC), 2012 IEEE
Conference_Location :
Seoul
Print_ISBN :
978-1-4673-0953-0
DOI :
10.1109/VPPC.2012.6422549
