{"title":"适用于电动汽车充电器的二极管箝位拓扑变形LLC变换器过流保护分析","authors":"Jiho. Kwak, Ki-Bum Park, I. Jang","doi":"10.23919/ICPE2023-ECCEAsia54778.2023.10213670","DOIUrl":null,"url":null,"abstract":"Recently, EVs (Electric Vehicles) increased their pack voltage from 400V to 800V. It has shortened the charging time, but EVs with 800V now have to carry an extra boost converter with their OBCs (onboard chargers) since most fast chargers support only 400V systems. This consumes extra weight and volume from EVs. Therefore, chargers need to handle both 400V and 800V systems to make EVs more competitive in the market. However, the chargers’ efficiency will decrease due to the broader expected output voltage range. As a solution, this paper suggests a Topology morphing technique. Nonetheless, the main scope of this paper is the overcurrent protection of such applications since there isn’t much research about overcurrent protection schemes for topology morphing. This paper proposes diode clamping of a resonant capacitor in a capacitor-shared LLC converter applicable to EV chargers for overcurrent protection with simulation results.","PeriodicalId":151155,"journal":{"name":"2023 11th International Conference on Power Electronics and ECCE Asia (ICPE 2023 - ECCE Asia)","volume":"34 2","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2023-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Analysis of Overcurrent Protection for Topology Morphing LLC Converters by Diode Clamping applicable to EV chargers\",\"authors\":\"Jiho. Kwak, Ki-Bum Park, I. Jang\",\"doi\":\"10.23919/ICPE2023-ECCEAsia54778.2023.10213670\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Recently, EVs (Electric Vehicles) increased their pack voltage from 400V to 800V. It has shortened the charging time, but EVs with 800V now have to carry an extra boost converter with their OBCs (onboard chargers) since most fast chargers support only 400V systems. This consumes extra weight and volume from EVs. Therefore, chargers need to handle both 400V and 800V systems to make EVs more competitive in the market. However, the chargers’ efficiency will decrease due to the broader expected output voltage range. As a solution, this paper suggests a Topology morphing technique. Nonetheless, the main scope of this paper is the overcurrent protection of such applications since there isn’t much research about overcurrent protection schemes for topology morphing. This paper proposes diode clamping of a resonant capacitor in a capacitor-shared LLC converter applicable to EV chargers for overcurrent protection with simulation results.\",\"PeriodicalId\":151155,\"journal\":{\"name\":\"2023 11th International Conference on Power Electronics and ECCE Asia (ICPE 2023 - ECCE Asia)\",\"volume\":\"34 2\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2023-05-22\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2023 11th International Conference on Power Electronics and ECCE Asia (ICPE 2023 - ECCE Asia)\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.23919/ICPE2023-ECCEAsia54778.2023.10213670\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2023 11th International Conference on Power Electronics and ECCE Asia (ICPE 2023 - ECCE Asia)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.23919/ICPE2023-ECCEAsia54778.2023.10213670","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Analysis of Overcurrent Protection for Topology Morphing LLC Converters by Diode Clamping applicable to EV chargers
Recently, EVs (Electric Vehicles) increased their pack voltage from 400V to 800V. It has shortened the charging time, but EVs with 800V now have to carry an extra boost converter with their OBCs (onboard chargers) since most fast chargers support only 400V systems. This consumes extra weight and volume from EVs. Therefore, chargers need to handle both 400V and 800V systems to make EVs more competitive in the market. However, the chargers’ efficiency will decrease due to the broader expected output voltage range. As a solution, this paper suggests a Topology morphing technique. Nonetheless, the main scope of this paper is the overcurrent protection of such applications since there isn’t much research about overcurrent protection schemes for topology morphing. This paper proposes diode clamping of a resonant capacitor in a capacitor-shared LLC converter applicable to EV chargers for overcurrent protection with simulation results.
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