Title :
Large air-gap 6.6 Kw wireless EV charger with self-resonant PWM
Author :
Jun-Young Lee ; Kwang-Min Yoo ; Jung, Byung ; Chae, Beom-soek ; Seo, Jeong
Author_Institution :
Dept. of Electr. Eng., Myongji Univ., Yongin, South Korea
Abstract :
A large air-gap wireless DC/DC charger for an electric vehicle (EV) is suggested. It is controlled by pulse width modulation (PWM) with a self-resonant frequency formed by self-inductance and a resonant capacitor so that constant frequency operation can be accomplished under a large air-gap without an additional current chopper. The feasibility of the proposed method has been verified with a 6.6 kW prototype with an air-gap of 12-20 cm.
Keywords :
DC-DC power convertors; PWM power convertors; battery chargers; electric current control; electric vehicles; inductive power transmission; constant frequency operation; large air gap wireless electric vehicle charger; large air-gap wireless DC-DC charger; power 6.6 kW; pulse width modulation; resonant capacitor; self-inductance; self-resonant PWM;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2013.4236
