| Title |
A Single-stage Interleaved Electrolytic Capacitor-less EV Charger with Reduced Component Count |
| Authors |
Min-Jae Kim ; Byeong-Woo Kim ; Bum-Kyo Jung ; Se-Wan Choi |
| DOI |
https://doi.org/10.6113/TKPE/2017.22.3.185 |
| Keywords |
On-board battery charger ; EV charger ; Singe-stage ; Soft switching ; High frequency transformer ; Electrolytic capacitor-less |
| 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. |