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http://dx.doi.org/10.6113/TKPE.2017.22.3.185

A Single-stage Interleaved Electrolytic Capacitor-less EV Charger with Reduced Component Count  

Kim, Min-Jae (Dept. Technology Research Institute New Power Plasma. co., Ltd.)
Kim, Byeong-Woo (Dept. of Electrical & Information Eng., Seoul Nat'l Univ. of Science and Technology)
Jung, Bum-Kyo (Dept. of Electrical & Information Eng., Seoul Nat'l Univ. of Science and Technology)
Choi, Se-Wan (Dept. of Electrical & Information Eng., Seoul Nat'l Univ. of Science and Technology)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.22, no.3, 2017 , pp. 185-192 More about this Journal
Abstract
This paper proposes a single-stage interleaved soft-switching electrolytic capacitor-less EV charger with reduced component count and simple circuit structure. The proposed charger achieves ZVS turn-on of all switches and ZCS turn-off of all diodes without regard to voltage and load variation. It achieves high power density even without an input filter due to CCM operation and bulky electrolytic capacitors and without a low-frequency component in the transformer. A 2 kW prototype of the proposed charger with sinusoidal charging is built and tested to verify the validity of the proposed operation.
Keywords
On-board battery charger; EV charger; Singe-stage; Soft switching; High frequency transformer; Electrolytic capacitor-less;
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