Feng Jin, Ahmed Nabih, Chen Chen, Xingyu Chen, Qiang Li, F. Lee
{"title":"一种用于电池充电器的高效率高密度DC/DC转换器","authors":"Feng Jin, Ahmed Nabih, Chen Chen, Xingyu Chen, Qiang Li, F. Lee","doi":"10.1109/APEC42165.2021.9487108","DOIUrl":null,"url":null,"abstract":"Increased attention is being paid to the solid-state-transformer (SST) based charging station which requires a high efficiency high power density DC/DC stage. This framework would provide universal charging for all electric vehicles (EVs) no matter their battery voltage is 400 V or 800 V. In this paper, a two stage DC/DC converter consisting of a three-phase (3P) CLLC converter and four-phase interleaving Buck converter is proposed to achieve a wide output voltage range from 200 V to 800 V with bi-directional energy transfer capability. With SiC devices, a PCB winding based six-leg integrated transformer is used for the 3P transformer, and a PCB winding based EI core is used for the negative coupling inductors. The detailed design process of integrated magnetics is presented. A 12.5 kW prototype with over 97.7 % efficiency and 100 W/in3 power density is built to verify the feasibility of the proposed structure.","PeriodicalId":7050,"journal":{"name":"2021 IEEE Applied Power Electronics Conference and Exposition (APEC)","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2021-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"36","resultStr":"{\"title\":\"A High Efficiency High Density DC/DC Converter for Battery Charger Applications\",\"authors\":\"Feng Jin, Ahmed Nabih, Chen Chen, Xingyu Chen, Qiang Li, F. Lee\",\"doi\":\"10.1109/APEC42165.2021.9487108\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Increased attention is being paid to the solid-state-transformer (SST) based charging station which requires a high efficiency high power density DC/DC stage. This framework would provide universal charging for all electric vehicles (EVs) no matter their battery voltage is 400 V or 800 V. In this paper, a two stage DC/DC converter consisting of a three-phase (3P) CLLC converter and four-phase interleaving Buck converter is proposed to achieve a wide output voltage range from 200 V to 800 V with bi-directional energy transfer capability. With SiC devices, a PCB winding based six-leg integrated transformer is used for the 3P transformer, and a PCB winding based EI core is used for the negative coupling inductors. The detailed design process of integrated magnetics is presented. A 12.5 kW prototype with over 97.7 % efficiency and 100 W/in3 power density is built to verify the feasibility of the proposed structure.\",\"PeriodicalId\":7050,\"journal\":{\"name\":\"2021 IEEE Applied Power Electronics Conference and Exposition (APEC)\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2021-06-14\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"36\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2021 IEEE Applied Power Electronics Conference and Exposition (APEC)\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/APEC42165.2021.9487108\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2021 IEEE Applied Power Electronics Conference and Exposition (APEC)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/APEC42165.2021.9487108","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
A High Efficiency High Density DC/DC Converter for Battery Charger Applications
Increased attention is being paid to the solid-state-transformer (SST) based charging station which requires a high efficiency high power density DC/DC stage. This framework would provide universal charging for all electric vehicles (EVs) no matter their battery voltage is 400 V or 800 V. In this paper, a two stage DC/DC converter consisting of a three-phase (3P) CLLC converter and four-phase interleaving Buck converter is proposed to achieve a wide output voltage range from 200 V to 800 V with bi-directional energy transfer capability. With SiC devices, a PCB winding based six-leg integrated transformer is used for the 3P transformer, and a PCB winding based EI core is used for the negative coupling inductors. The detailed design process of integrated magnetics is presented. A 12.5 kW prototype with over 97.7 % efficiency and 100 W/in3 power density is built to verify the feasibility of the proposed structure.
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