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Zero Body Diode Conduction Time in Variable Speed Drive Converter Systems
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| Author(s) |
Matthias ROSE, Jörg KRUPAR, Henry GÜLDNER |
| Abstract |
This paper describes a digital gate control approach for variable speed motor drive systems. The presented approach reduces body diode conduction time to zero without generation of cross conduction. The method uses a measurement impedance in series to the power devices of the converter system. This allows the direct detection of the current commutation interval and the load current direction in every half-bridge. With application of this approach we achieved an improved efficiency and electromagnetic behavior by the avoidance of body diode conduction and reverse recovery. The duration of a switching transition is minimized. |
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| Filename: | 0171-epe2009-full-10425324.pdf |
| Filesize: | 397.9 KB |
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| Type |
Members Only |
| Date |
Last modified 2010-01-27 by System |
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