High-efficiency bridgeless boost PFC converter employing relay for server power supply = 서버용 전원장치를 위한 릴레이를 사용한 고효율 브리지리스 부스트 PFC 컨버터

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Interleaved totem-pole bridgeless PFC converter (interleaved totem-pole BPFC) achieves high efficiency at low line because it has small conduction loss of switch. However, at high line, interleaved totem-pole BPFC converter has low efficiency because inductor core loss occupies large portion of the total power loss. In this study, a new bridgeless boost PFC converter which has high efficiency at universal line is proposed. The proposed converter operates the same as interleaved totem-pole BPFC converter at low line. However, at high line, the proposed converter operates as a totem-pole BPFC by topology variation. By the topology variation, the proposed converter achieves high efficiency for the universal input voltage. To confirm the validity of this study, the prototype of proposed converter with $115 / 230V_{AC}$ input and $400V_{DC} / 1.6kW$ output was tested.
Advisors
Moon, Gun-Wooresearcher문건우researcher
Description
한국과학기술원 :전기및전자공학부,
Publisher
한국과학기술원
Issue Date
2018
Identifier
325007
Language
eng
Description

학위논문(석사) - 한국과학기술원 : 전기및전자공학부, 2018.2,[ii, 28 p. :]

Keywords

Interleaved totem-pole bridgeless PFC converter▼auniversial input voltage▼ahigh efficiency▼atopology variation; 인터리브드▼a토템폴▼a유니버셜 입력▼a고효율▼a토폴로지 변환

URI
http://hdl.handle.net/10203/266775
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=734042&flag=dissertation
Appears in Collection
EE-Theses_Master(석사논문)
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