High-Efficiency Bridgeless Single-Power-Conversion Battery Charger for Light Electric Vehicles
SCIE
SCOPUS
- Title
- High-Efficiency Bridgeless Single-Power-Conversion Battery Charger for Light Electric Vehicles
- Authors
- Jeong, Seo-Gwang; Kwon, Jung-Min; Kwon, Bong-Hwan
- Date Issued
- 2019-01
- Publisher
- IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
- Abstract
- Charging batteries of light electric vehicles require chargers with high efficiency and a high power factor. To meet this need, this paper presents a bridgeless single-power-conversion battery charger composed of an isolated step-up ac-dc converter with a series-resonance circuit. The bridgeless configuration reduces the conduction losses associated with the input diode rectifier, and the series-resonance circuit reduces the reverse-recovery losses of the output diodes by providing zero-current switching. In addition, direct and series-resonance current injections enable bidirectional core excitation by the transformer, thereby allowing high-power capability. The control algorithm derived from feedback linearization is also developed, which allows the proposed charger to correct the power factor and regulate the output power in a single-stage power conversion. This simple circuit structure leads to high efficiency and a high power factor. The theoretical concepts of the proposed charger are verified experimentally using a 1.7-kW prototype.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/100181
- DOI
- 10.1109/TIE.2018.2826458
- ISSN
- 0278-0046
- Article Type
- Article
- Citation
- IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, vol. 66, no. 1, page. 215 - 222, 2019-01
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