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COMPARISON OF MULTIPHASE VERSUS MULTILEVEL DC/DC-CONVERTERS FOR AUTOMOTIVE POWER
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| Author(s) |
Michael GLEISSNER, Mark-Matthias BAKRAN |
| Abstract |
Further automotive efficiency improvements require higher voltage levels than 14V for electric energy generation and distribution. As long as not all electric consumers can be adapted to the higher voltagelevel, DC/DC-converters link automotive power nets with different voltages. For low voltage converterswithout galvanic isolation mostly multiphase DC/DC-converters with coupled or uncoupled inductors areproposed due to their high power density. Multilevel architectures like the Flying Capacitor MultilevelDC/DC-Converter offer similar benefits and it will be shown that they need a smaller inductor size andprovide better fault behaviour for short-on-failure switches. Efficiency is similar despite serial connectedswitches. This paper compares the two architectures regarding component count, control, size, faulttolerance and efficiency. |
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| Filename: | 0028-epe2013-full-10402182.pdf |
| Filesize: | 684.1 KB |
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| Type |
Members Only |
| Date |
Last modified 2014-02-09 by System |
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