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Open-circuit Fault Detection and Isolation for Modular Multilevel Converter Based on Sliding Mode Observer
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| Author(s) |
Shuai SHAO, Pat WHEELER, Jon CLARE, Alan WATSON |
| Abstract |
This paper presents a fault detection and isolation (FDI) method for a Modular Multilevel Converter(MMC). This method can locate an open-circuit faulty device accurately and quickly. Based on a slidingmode observer (SMO) and a switching model of a half bridge, the approach is to assume the location ofthe fault, modify the observer equation and then compare the measured and observed states to verify, orotherwise, the assumption for possible fault locations. This technique requires no additional measurementelements and can easily be implemented in a microcontroller. The operation and robustness of theproposed method are confirmed using simulation results. |
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| Filename: | 0573-epe2013-full-10365498.pdf |
| Filesize: | 1.05 MB |
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| Type |
Members Only |
| Date |
Last modified 2014-02-09 by System |
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