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http://dx.doi.org/10.6113/JPE.2018.18.2.383

Isolated PFC Converter Based on an ADAB Structure with Harmonic Modulation for EV Chargers  

Choi, Seung-Won (Dept. of Electrical Eng., Myong-Ji University)
Kim, Yoon-Jae (Dept. of Electrical Eng., Myong-Ji University)
Lee, Il-Oun (Dept. of Electrical Eng., Myong-Ji University)
Lee, Jun-Young (Dept. of Electrical Eng., Myong-Ji University)
Publication Information
Journal of Power Electronics / v.18, no.2, 2018 , pp. 383-394 More about this Journal
Abstract
This paper presents an isolated power factor correction converter for general-purpose electric vehicle chargers with a wide output voltage range. The converter is based on an asymmetrical dual active bridge structure so that the voltage stress of switching devices can be eliminated by transferring the transformer leakage inductance to the circuit parameters. Harmonic and output controls are performed by secondary switches, and primary switches are only operated at a fixed frequency with a 50% duty ratio. A harmonic modulation technique is also adopted to obtain a near-unity power factor without input current monitoring. The feasibility of the proposed charger is verified with a 3.3 kW prototype.
Keywords
Battery charger; Electric vehicles; PFC converter;
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