Xiaosheng Huang, Fenqiang Liang, Yipeng Kong, Shuyi Lin
{"title":"Analysis and Design of Class-E ZVS Inverter with Parallel Circuit for MHz Wireless Power Transfer","authors":"Xiaosheng Huang, Fenqiang Liang, Yipeng Kong, Shuyi Lin","doi":"10.1109/PEAC.2018.8590398","DOIUrl":null,"url":null,"abstract":"This paper proposes a design method of class-E inverter for the mega-hertz wireless power transfer (WPT) systems. It realizes zero voltage switching (ZVS) and reduces the peak switch voltage of inverter with load variation. Moreover, the design of four-coil WPT systems considering voltage limitation of compensation capacitors is also studied, and a prototype is built to verify the methods proposed. The peak voltage of switch decreases to about 3.4 times of the input DC voltage of class-E inverter, and varies less than 5% with load variation. With the coupling coefficient of 0.078 between transmitting and receiving coils, the system efficiency reaches 83.5% at the rated output power of 60 watts, and the inverter efficiency reaches 96.0%.","PeriodicalId":446770,"journal":{"name":"2018 IEEE International Power Electronics and Application Conference and Exposition (PEAC)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2018 IEEE International Power Electronics and Application Conference and Exposition (PEAC)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/PEAC.2018.8590398","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
This paper proposes a design method of class-E inverter for the mega-hertz wireless power transfer (WPT) systems. It realizes zero voltage switching (ZVS) and reduces the peak switch voltage of inverter with load variation. Moreover, the design of four-coil WPT systems considering voltage limitation of compensation capacitors is also studied, and a prototype is built to verify the methods proposed. The peak voltage of switch decreases to about 3.4 times of the input DC voltage of class-E inverter, and varies less than 5% with load variation. With the coupling coefficient of 0.078 between transmitting and receiving coils, the system efficiency reaches 83.5% at the rated output power of 60 watts, and the inverter efficiency reaches 96.0%.