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Fault tolerant operation of power converters with cascaded cells
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| Author(s) |
Frans DIJKHUIZEN, Staffan NORRGA |
| Abstract |
Multilevel converters based on cascaded cells are well suited for high power applications, due to good control performance, extensive modularity and excellent harmonic distortion. A vital requirement in high power converters is being fault-tolerant, so that a single fault in a cell does not lead to the trip of the entire converter. This paper presents a strategy for fault-tolerance on cell level with Integrated Gate Commutated Thyristors (IGCT). The concept is based on initiating a surge in a phase leg in a failing cell, limited by a di/dt reactor leading to a short circuit failure mode of the IGCT thereby excluding the cell from the chain. |
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| Filename: | 0617-epe2011-full-17102692.pdf |
| Filesize: | 764.2 KB |
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| Type |
Members Only |
| Date |
Last modified 2012-01-26 by System |
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