Title :
A Bidirectional Wireless Power Transfer EV Charger Using Self-Resonant PWM
Author :
Jun-Young Lee ; Byung-Moon Han
Author_Institution :
Dept. of Electron. Eng., Myongji Univ., Yongin, South Korea
Abstract :
This letter suggests a large air-gap bidirectional wireless power transfer charger for electric vehicle. It is controlled by pulse width modulation with a self-resonant frequency formed by self-inductance and resonant capacitor so that constant frequency operation can be accomplished under large air-gap without additional current chopper. The feasibility of the proposed method has been verified with a 6.6-kW prototype with air-gap of 12-20 cm.
Keywords :
battery chargers; capacitors; electric vehicles; inductive power transmission; bidirectional wireless power transfer EV charger; constant frequency operation; electric vehicle; large air-gap bidirectional wireless power transfer charger; power 6.6 kW; pulse width modulation; resonant capacitor; self-inductance; self-resonant PWM; self-resonant frequency; Air gaps; Batteries; Coils; Frequency control; Pulse width modulation; Resonant frequency; Wireless communication; Battery charger; bidirectional converter; wireless power transfer (WPT);
Journal_Title :
Power Electronics, IEEE Transactions on
DOI :
10.1109/TPEL.2014.2346255
