Novel topology of ac-dc converter using direct power conversion
SCIE
SCOPUS
- Title
- Novel topology of ac-dc converter using direct power conversion
- Authors
- Cho, YW; Kwon, BH
- Date Issued
- 2012-09
- Publisher
- NSTITUTION ENGINEERING TECHNOLOGY
- Abstract
- This study proposes a novel topology of the ac-dc converter using direct power conversion that has a simple structure and achieves high efficiency. The proposed converter is derived by integrating the step-down ac chopper and the output-voltage doubler. The proposed converter provides direct ac-dc conversion and isolated dc output voltage without using any full-bridge diode rectifier. The step-down ac chopper using an active-clamp mechanism serves to clamp the voltage spike across the main switches and provides zero-voltage turn-on switching. The resonant-current path formed by the leakage inductance of the transformer and the resonant capacitor of the output-voltage doubler achieves the zero-current turn-off switching of the output diodes. The operation principle of the converter is analysed and verified. A 500 W prototype is implemented to show the performance of the proposed converter. The prototype provides maximum efficiency of 95.1% at the full load.
- Keywords
- AC/DC CONVERTER; VOLTAGE REGULATOR; DESIGN
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/15972
- DOI
- 10.1049/iet-pel.2011.0355
- ISSN
- 1755-4535
- Article Type
- Article
- Citation
- IET Power Electron., vol. 5, no. 8, page. 1560 - 1568, 2012-09
- Files in This Item:
- There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.