{"title":"单端正激变换器谐振复位条件分析","authors":"N. Murakami, M. Yamasaki","doi":"10.1109/PESC.1988.18238","DOIUrl":null,"url":null,"abstract":"The reset condition of a transformer core flux is analyzed for a single-ended forward converter operating in a resonant reset mode. Relationships between reset time and device parameters such as the main switch output capacitance are derived. As a result, the maximum frequency in a resonant reset mode can be predicted. The main results are: the resonance period of the main transformer flyback voltage is mainly determined by transformer magnetizing inductance, main switch output capacitance, and diode junction capacitance; the main transformer flux excursion is between the first and third quadrant in B-H characteristics; and the maximum operating frequency in the resonant reset mode is determined by the above parameters and volt-second products during main switch on-time. The validity of the analysis is confirmed by comparison with experimental results for a low-power DC-to-DC converter with a 50 V input and a 5 V, 2 A maximum output.<<ETX>>","PeriodicalId":283605,"journal":{"name":"PESC '88 Record., 19th Annual IEEE Power Electronics Specialists Conference","volume":"35 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1988-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"47","resultStr":"{\"title\":\"Analysis of a resonant reset condition for a single-ended forward converter\",\"authors\":\"N. Murakami, M. Yamasaki\",\"doi\":\"10.1109/PESC.1988.18238\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The reset condition of a transformer core flux is analyzed for a single-ended forward converter operating in a resonant reset mode. Relationships between reset time and device parameters such as the main switch output capacitance are derived. As a result, the maximum frequency in a resonant reset mode can be predicted. The main results are: the resonance period of the main transformer flyback voltage is mainly determined by transformer magnetizing inductance, main switch output capacitance, and diode junction capacitance; the main transformer flux excursion is between the first and third quadrant in B-H characteristics; and the maximum operating frequency in the resonant reset mode is determined by the above parameters and volt-second products during main switch on-time. The validity of the analysis is confirmed by comparison with experimental results for a low-power DC-to-DC converter with a 50 V input and a 5 V, 2 A maximum output.<<ETX>>\",\"PeriodicalId\":283605,\"journal\":{\"name\":\"PESC '88 Record., 19th Annual IEEE Power Electronics Specialists Conference\",\"volume\":\"35 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1988-04-11\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"47\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"PESC '88 Record., 19th Annual IEEE Power Electronics Specialists Conference\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/PESC.1988.18238\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"PESC '88 Record., 19th Annual IEEE Power Electronics Specialists Conference","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/PESC.1988.18238","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Analysis of a resonant reset condition for a single-ended forward converter
The reset condition of a transformer core flux is analyzed for a single-ended forward converter operating in a resonant reset mode. Relationships between reset time and device parameters such as the main switch output capacitance are derived. As a result, the maximum frequency in a resonant reset mode can be predicted. The main results are: the resonance period of the main transformer flyback voltage is mainly determined by transformer magnetizing inductance, main switch output capacitance, and diode junction capacitance; the main transformer flux excursion is between the first and third quadrant in B-H characteristics; and the maximum operating frequency in the resonant reset mode is determined by the above parameters and volt-second products during main switch on-time. The validity of the analysis is confirmed by comparison with experimental results for a low-power DC-to-DC converter with a 50 V input and a 5 V, 2 A maximum output.<>