{"title":"Small boost circuit topology for expanding input voltage range for a bi-directional isolated dc-dc converter","authors":"T. Shimada, K. Taniguchi, Kosuke Abe","doi":"10.1109/INTLEC.2015.7572333","DOIUrl":null,"url":null,"abstract":"A circuit topology for a bi-directional isolated DC-DC converter and its operation are proposed and evaluation results are discussed. This converter is based on a voltage-source primary circuit and a current-source secondary circuit with an active clamp circuit. To decrease the lower limit of the input voltage for a large voltage range, the proposed topology uses a “small boost circuit” consisting of only a boosting capacitor and a switch on the secondary side. Only when the input voltage is decreased, the switch is kept in the on-state and the secondary voltage is boosted by using transformer series inductance. A 2-kW prototype converter, which has a previously proposed control and the new small boost circuit of the proposed topology, decreased the input voltage lower limit from 289 to 267 V under maximum output conditions.","PeriodicalId":211948,"journal":{"name":"2015 IEEE International Telecommunications Energy Conference (INTELEC)","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2015 IEEE International Telecommunications Energy Conference (INTELEC)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/INTLEC.2015.7572333","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
A circuit topology for a bi-directional isolated DC-DC converter and its operation are proposed and evaluation results are discussed. This converter is based on a voltage-source primary circuit and a current-source secondary circuit with an active clamp circuit. To decrease the lower limit of the input voltage for a large voltage range, the proposed topology uses a “small boost circuit” consisting of only a boosting capacitor and a switch on the secondary side. Only when the input voltage is decreased, the switch is kept in the on-state and the secondary voltage is boosted by using transformer series inductance. A 2-kW prototype converter, which has a previously proposed control and the new small boost circuit of the proposed topology, decreased the input voltage lower limit from 289 to 267 V under maximum output conditions.