Title :
An Electrolytic Capacitor-less Bi-Directional EV On-Board Charger Using Harmonic Modulation Technique
Author :
Chul-Jun Shin ; Jun-Young Lee
Author_Institution :
Dept. of Electron. Eng., Myongji Univ., Yongin, South Korea
Abstract :
This paper suggests a new electrolytic capacitor-less bi-directional on-board charger for electric vehicle. It has a cascade structure of constant frequency resonant converter for electrical isolation and DCM buck/boost converter for charging/discharging control and input harmonic regulation. Harmonic modulation technique is also proposed to obtain a high power factor and structure change method has been adopted to cope with a wide line voltage condition. Harmonic regulation and charging/discharging control can be accomplished with very simple control algorithm so that high performance controller is not required. Its feasibility has been verified with a 3-kW prototype.
Keywords :
electric vehicles; frequency convertors; power factor; resonant power convertors; DCM buck-boost converter; charging-discharging control; constant frequency resonant converter; discontinuous conduction mode; electric vehicle; electrical isolation; electrolytic capacitorless bidirectional EV on-board charger; harmonic modulation technique; harmonic regulation; power 3 kW; power factor; structure change method; wide line voltage condition; Batteries; Bidirectional control; DC-DC power converters; Harmonic analysis; Resonant frequency; Voltage control; Battery charger; bi-directional converter; discontinuous conduction mode (DCM); power factor (PF);
Journal_Title :
Power Electronics, IEEE Transactions on
DOI :
10.1109/TPEL.2013.2293781
