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Operation of Fault-Tolerant Non-Isolated Multiphase 3-Level DC-DC Converters for 48 V Automotive Power Systems
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| Author(s) |
Michael GLEISSNER |
| Abstract |
The operation of a non-isolated, bidirectional DC--DC converter with several interleaving phases of 3-level flying capacitor modules for automotive power systems is analysed in theory and a 3-phase prototype implementation. Control techniques for equal phase current sharing and flying capacitor voltage balance are applied. The converter efficiency is compared to a status quo 2-level multiphase converter with protection switches. Moreover, the system behaviour in case of semiconductor switch failures is investigated. The 3-level modules are always superior to a 2-level structure and need only the relatively small flying capacitor as additional component. |
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| Filename: | 0020-epe2015-full-17453566.pdf |
| Filesize: | 2.497 MB |
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| Type |
Members Only |
| Date |
Last modified 2016-06-08 by System |
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