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An Integrated Single-Stage PFC AC to DC Converter with Reduced Switching Losses
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| Author(s) |
Kang F.S., Kim W., Park S., Kim Ch. |
| Abstract |
In order to obtain sinusoidal, unity power factor input currents, an integrated zero-voltage switched single-stage power factor corrected AC/DC forward converter with semiautomatic current shaping is presented in this paper. This converter is combined a boost converter used as PFC with a forward converter used as DC to DC conversion into one power stage. As this converter is operated in discontinuous conduction mode, the peak of the input current will follow the input voltage without sensing of the input current from AC line. At the same time, due to zero-voltage switching, the switching losses can be considerably relieved. And to decrease the surge voltage at the secondary rectifiers, when switches are turned on or off, a simple auxiliary circuit is adopted into the proposed converter. Theoretical analysis and experimental results of a 1 [kW] converter with 110 [Vac] input voltage and 50 [Vdc] output voltages are presented. |
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| Filename: | EPE-PEMC2000 - 277 - Kang.pdf |
| Filesize: | 572.9 KB |
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| Type |
Members Only |
| Date |
Last modified 2004-04-28 by System |
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