Sungryul Huh, Jaehyoung Park, S. Lee, K. Kim, Seongho Woo, Changmin Lee, Jaewon Rhee, Seokhyeon Son, Seungyoung Ahn
{"title":"Design of Reactive Shield Coil for Wireless Charger with Multiple Coils","authors":"Sungryul Huh, Jaehyoung Park, S. Lee, K. Kim, Seongho Woo, Changmin Lee, Jaewon Rhee, Seokhyeon Son, Seungyoung Ahn","doi":"10.1109/WPTC51349.2021.9458154","DOIUrl":null,"url":null,"abstract":"In wireless power transfer system, a leakage electromagnetic field (EMF) that can affect a human body or peripheral devices is one of the most important problems along with system efficiency. Since ferrite and aluminum which are basically used to reduce the EMF have a high weight and cost, various studies to cancel the EMF using reverse magnetic field by additional coil are being conducted. In this paper, a reactive shield coil that can be applied to a wireless charger with multiple transmitter coils is proposed. The EMF is reduced by applying the proposed coil up to 85%.","PeriodicalId":130306,"journal":{"name":"2021 IEEE Wireless Power Transfer Conference (WPTC)","volume":"58 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2021-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2021 IEEE Wireless Power Transfer Conference (WPTC)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/WPTC51349.2021.9458154","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
In wireless power transfer system, a leakage electromagnetic field (EMF) that can affect a human body or peripheral devices is one of the most important problems along with system efficiency. Since ferrite and aluminum which are basically used to reduce the EMF have a high weight and cost, various studies to cancel the EMF using reverse magnetic field by additional coil are being conducted. In this paper, a reactive shield coil that can be applied to a wireless charger with multiple transmitter coils is proposed. The EMF is reduced by applying the proposed coil up to 85%.
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