Power converters having capacitor resonant with transformer leakage inductance

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dc.contributor.assigneeVirginia Tech Intellectual Properties, Inc.en
dc.contributor.inventorLee, Fred C.en
dc.contributor.inventorXu, Ming Gangen
dc.contributor.inventorRen, Yuanchengen
dc.date.accessed2016-08-19en
dc.date.accessioned2016-08-24T17:54:40Zen
dc.date.available2016-08-24T17:54:40Zen
dc.date.filed2004-11-19en
dc.date.issued2007-03-27en
dc.description.abstractPower converters having reduced body diode conduction loss, reduced reverse recovery loss and lower switching noise, among other benefits, have a resonant capacitor Cr connected across an unfiltered output. The resonant capacitor Cr resonates with the leakage inductance Lk of the transformer. The resonant capacitor and leakage inductance are selected such that ½ a LC resonance period is equal to an ON time of each secondary switch S1 S2. The resonance provides zero current switching for secondary switches S1 S2, eliminates zero body diode conduction during dead times, and eliminates reverse recovery losses in the secondary switches. The present invention is applicable to many different circuit topologies such as full bridge, active clamp forward, push-pull forward, and center-tap secondary. The present converters provide high energy conversion efficiency and high frequency operation.en
dc.format.mimetypeapplication/pdfen
dc.identifier.applicationnumber10992227en
dc.identifier.patentnumber7196914en
dc.identifier.urihttp://hdl.handle.net/10919/72558en
dc.identifier.urlhttp://pimg-fpiw.uspto.gov/fdd/14/969/071/0.pdfen
dc.language.isoen_USen
dc.publisherUnited States Patent and Trademark Officeen
dc.subject.cpcH02M3/33592en
dc.subject.cpcH02M3/33569en
dc.subject.cpcY02B70/1433en
dc.subject.cpcY02B70/1475en
dc.subject.uspc363/21.14en
dc.subject.uspcother363/17en
dc.titlePower converters having capacitor resonant with transformer leakage inductanceen
dc.typePatenten
dc.type.dcmitypeTexten
dc.type.patenttypeutilityen

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