The application of sliding mode observers to fault detection and isolation for multilevel converters
Multilevel converters have received significant interest recently as a result of their high power capability and good power quality. However due to the large number of sensitive components including power semiconductor devices and capacitors used in such circuits there is a high likelihood of compo...
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| Format: | Thesis (University of Nottingham only) |
| Language: | English |
| Published: |
2015
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| Online Access: | https://eprints.nottingham.ac.uk/29098/ |
| _version_ | 1848793715144916992 |
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| author | Shao, Shuai |
| author_facet | Shao, Shuai |
| author_sort | Shao, Shuai |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | Multilevel converters have received significant interest recently as a result of their high power capability and good power quality. However due to the large number of sensitive components including power semiconductor devices and capacitors used in such circuits there is a high likelihood of component failures.
This thesis considers one of the most promising multilevel topologies---the modular multilevel converter (MMC). Several methods are presented to detect and locate open-circuit faults in the power semiconductor devices in an MMC. These methods are based on sliding mode observers (SMOs). The signals used in the proposed methods are already available as measurement inputs to the control system and no additional measurement elements are required. An experimental MMC rig has been designed and built to validate these fault detection and isolation methods. The methods can be used with other multilevel converter topologies employing similar analysis and principles. |
| first_indexed | 2025-11-14T19:04:42Z |
| format | Thesis (University of Nottingham only) |
| id | nottingham-29098 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T19:04:42Z |
| publishDate | 2015 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-290982025-02-28T11:35:25Z https://eprints.nottingham.ac.uk/29098/ The application of sliding mode observers to fault detection and isolation for multilevel converters Shao, Shuai Multilevel converters have received significant interest recently as a result of their high power capability and good power quality. However due to the large number of sensitive components including power semiconductor devices and capacitors used in such circuits there is a high likelihood of component failures. This thesis considers one of the most promising multilevel topologies---the modular multilevel converter (MMC). Several methods are presented to detect and locate open-circuit faults in the power semiconductor devices in an MMC. These methods are based on sliding mode observers (SMOs). The signals used in the proposed methods are already available as measurement inputs to the control system and no additional measurement elements are required. An experimental MMC rig has been designed and built to validate these fault detection and isolation methods. The methods can be used with other multilevel converter topologies employing similar analysis and principles. 2015-07-16 Thesis (University of Nottingham only) NonPeerReviewed application/pdf en arr https://eprints.nottingham.ac.uk/29098/1/thesis_Shuai_Shao.pdf Shao, Shuai (2015) The application of sliding mode observers to fault detection and isolation for multilevel converters. PhD thesis, University of Nottingham. Multilevel converter Fault detection and isolation Sliding mode observer |
| spellingShingle | Multilevel converter Fault detection and isolation Sliding mode observer Shao, Shuai The application of sliding mode observers to fault detection and isolation for multilevel converters |
| title | The application of sliding mode observers to fault detection and isolation for multilevel converters |
| title_full | The application of sliding mode observers to fault detection and isolation for multilevel converters |
| title_fullStr | The application of sliding mode observers to fault detection and isolation for multilevel converters |
| title_full_unstemmed | The application of sliding mode observers to fault detection and isolation for multilevel converters |
| title_short | The application of sliding mode observers to fault detection and isolation for multilevel converters |
| title_sort | application of sliding mode observers to fault detection and isolation for multilevel converters |
| topic | Multilevel converter Fault detection and isolation Sliding mode observer |
| url | https://eprints.nottingham.ac.uk/29098/ |