Battery Charger with Zero-Voltage-Transition Boost Converter
碩士 === 崑山科技大學 === 電機工程研究所 === 97 === Since traditional hard-switching power switch components have non-ideal characteristics, a voltage surge or current surge generated under conduction and cutoff, the power switch components reduces the efficiency, increases the component stress and facilitates bre...
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| Format: | Others |
| Language: | zh-TW |
| Published: |
2009
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| Online Access: | http://ndltd.ncl.edu.tw/handle/tzy778 |
| Summary: | 碩士 === 崑山科技大學 === 電機工程研究所 === 97 === Since traditional hard-switching power switch components have non-ideal characteristics, a voltage surge or current surge generated under conduction and cutoff, the power switch components reduces the efficiency, increases the component stress and facilitates breakage. This work employs soft-switching technology to realize a novel battery charger with a zero-voltage-transition (ZVT) boost converter which increases the charging efficiency above, reduces the switching losses below, and reduces the electromagnetic interference (EMI) below, those of battery chargers with conventional boost converters. The optimal circuit parameters are set based on circuit analyses under the conduction and cut-off conditions of two active switches using equivalent circuits and the circuit operation equations. Experimental results demonstrate the theoretical effectiveness of the proposed battery charger. The practical mean charging efficiency of the developed battery charger is as high as 88.2%.
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