High efficiency single-stage llc resonant converter for wide input voltage range = 넓은 입력전압 범위를 갖는 고효율 Single-Stage LLC 공진 컨버터

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In this paper, a new single-stage LLC resonant converter with relay for wide input voltage is proposed. According input voltage, connection of proposed converter is changed by relay. According to input voltage, turn ratio of proposed converter is changed. Lm of proposed converter is designed higher than conventional converter. Proposed converter is operated series connection at high input voltage. Proposed converter has lower peak of magnetizing current and lower primary RMS current at high input voltage. So proposed converter has low conduction loss and low switching loss at high input voltage. Proposed converter is operated parallel connection at low input voltage. Proposed converter has lower resistance of primary wire of transformer at low input voltage. So proposed converter has low conduction loss at low input voltage. The feasibility of the proposed converter was verified by experimental results with a prototype of 60W, 90Vac~264Vac input, and 16.5V- 3.65A output. The proposed converter shows high efficiency, low cost and similar size than conventional converter.
Advisors
Moon, Gun-Wooresearcher문건우
Description
한국과학기술원 : 전기및전자공학과,
Publisher
한국과학기술원
Issue Date
2014
Identifier
569264/325007  / 020123504
Language
eng
Description

학위논문(석사) - 한국과학기술원 : 전기및전자공학과, 2014.2, [ ⅱ, 46 p. ]

Keywords

Single-stage LLC resonant converter; 영 전압 스위칭; 유니버셜 라인; 넓은 입력전압; 60W 아답터; 릴레이; relay; 60W adapter; wide input voltage; universal line; ZVS switching; 싱글 스테이지 LLC 공진 컨버터

URI
http://hdl.handle.net/10203/196792
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=569264&flag=dissertation
Appears in Collection
EE-Theses_Master(석사논문)
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