고효율을 갖는 단일 전력변환 직렬 공진형 AC-DC 컨버터
KCI
- Title
- 고효율을 갖는 단일 전력변환 직렬 공진형 AC-DC 컨버터
- Authors
- 정서광; 차우준; 이성호; 권봉환
- Date Issued
- 2016-06
- Publisher
- 전력전자학회
- Abstract
- In this study, a single-power-conversion series-resonant ac-dc converter with high efficiency and high power factor is proposed. The proposed ac-dc converter consists of single-ended primary-inductor converter with an active-clamp circuit and a voltage doubler with series-resonant circuit. The active-clamp circuit clamps the surge voltage and provides zero-voltage switching of the main switch. The series-resonant circuit consists of leakage inductance Llk of the transformer and resonant capacitors Cr1 and Cr2. This circuit also provides zero-current switching of output diodes D1 and D2. Thus, the switching loss of switches and reverse-recovery loss of output diodes are considerably reduced. The proposed ac-dc converter also achieves high power factor using the proposed control algorithm without the addition of a power factor correction circuit and a dc-link electrolytic capacitor. A detailed theoretical analysis and the experimental results for a 1kW prototype are discussed.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/107957
- DOI
- 10.6113/TKPE.2016.21.3.224
- ISSN
- 1229-2214
- Article Type
- Article
- Citation
- 전력전자학회 논문지, vol. 21, no. 3, page. 224 - 230, 2016-06
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