High-Efficiency Asymmetrical Half-Bridge Converter With a New Coupled Inductor Rectifier (CIR)

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dc.contributor.authorHan, Jung-Kyuko
dc.contributor.authorKim, Jong-Wooko
dc.contributor.authorLee, Byoung-Heeko
dc.contributor.authorLai, Jih-Shengko
dc.contributor.authorMoon, Gun-Wooko
dc.date.accessioned2019-10-07T06:50:06Z-
dc.date.available2019-10-07T06:50:06Z-
dc.date.created2019-10-07-
dc.date.created2019-10-07-
dc.date.issued2019-12-
dc.identifier.citationIEEE TRANSACTIONS ON POWER ELECTRONICS, v.34, no.12, pp.11541 - 11552-
dc.identifier.issn0885-8993-
dc.identifier.urihttp://hdl.handle.net/10203/267795-
dc.description.abstractA conventional asymmetrical half-bridge (AHB) converter is one of the most promising topologies in low-power applications because of the zero-voltage switching (ZVS) of all switches and the small number of components. However, when it operates with an asymmetrical duty ratio, it has a large dc-offset current in the transformer, which increases the size and core loss of the transformer. Moreover, because the dc-offset current decreases ZVS energy for one of the half-bridge switches, it has low efficiency in a light load condition. In addition, because most of the output current is concentrated in high-voltage-rating diodes that have large forward voltage drops, large conduction loss occurs in the secondary rectifier. To solve these problems, a new AHB converter with a coupled inductor rectifier (CIR) is proposed in this paper. By adopting the CIR structure in the AHB converter, the proposed converter not only eliminates the dc-offset current in the transformer, but it also has equalized current stress in the rectifier diodes. As a result, the proposed converter achieves high efficiency in entire load condition, compared to an AHB converter with a full-bridge rectifier. The effectiveness and feasibility are verified with a 250-400 V input and 100 V/200 W output prototype.-
dc.languageEnglish-
dc.publisherIEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC-
dc.titleHigh-Efficiency Asymmetrical Half-Bridge Converter With a New Coupled Inductor Rectifier (CIR)-
dc.typeArticle-
dc.identifier.wosid000485747300006-
dc.identifier.scopusid2-s2.0-85072246374-
dc.type.rimsART-
dc.citation.volume34-
dc.citation.issue12-
dc.citation.beginningpage11541-
dc.citation.endingpage11552-
dc.citation.publicationnameIEEE TRANSACTIONS ON POWER ELECTRONICS-
dc.identifier.doi10.1109/TPEL.2019.2906722-
dc.contributor.localauthorMoon, Gun-Woo-
dc.contributor.nonIdAuthorKim, Jong-Woo-
dc.contributor.nonIdAuthorLee, Byoung-Hee-
dc.contributor.nonIdAuthorLai, Jih-Sheng-
dc.description.isOpenAccessN-
dc.type.journalArticleArticle-
dc.subject.keywordAuthorAsymmetrical half-bridge (AHB) converter-
dc.subject.keywordAuthorcoupled inductor rectifier (CIR)-
dc.subject.keywordAuthordc-offset current-
dc.subject.keywordAuthorhigh efficiency-
dc.subject.keywordAuthorzero-voltage switching (ZVS)-
dc.subject.keywordPlusDC-OFFSET CURRENT-
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