Flying-capacitor-based chopper circuit for dc capacitor voltage balancing in diode-clamped multilevel inverter
This paper proposes a flying-capacitor-based chopper circuit for dc capacitor voltage equalization in diode-clamped multilevel inverters. Its important features are reduced voltage stress across the chopper switches, possible reduction in the chopper switching frequency, improved reliability, and ri...
| Main Authors: | , , |
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| Format: | Journal Article |
| Published: |
Institute of Electrical and Electronic Engineers
2010
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| Online Access: | http://hdl.handle.net/20.500.11937/39099 |
| _version_ | 1848755498855170048 |
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| author | Shukla, A. Ghosh, Arindam joshi, A. |
| author_facet | Shukla, A. Ghosh, Arindam joshi, A. |
| author_sort | Shukla, A. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | This paper proposes a flying-capacitor-based chopper circuit for dc capacitor voltage equalization in diode-clamped multilevel inverters. Its important features are reduced voltage stress across the chopper switches, possible reduction in the chopper switching frequency, improved reliability, and ride-throughcapability enhancement. This topology is analyzed using threeand four-level flying-capacitor-based chopper circuit configurations. These configurations are different in capacitor and semiconductor device count and correspondingly reduce the device voltage stresses by half and one-third, respectively. The detailed working principles and control schemes for these circuits are presented. It is shown that, by preferentially selecting the available chopper switch states, the dc-link capacitor voltages can be efficiently equalized in addition to having tightly regulated flying-capacitor voltages around their eferences. The various operating modes of the chopper are described along with their preferentialselection logic to achieve the desired performances. The performance of the proposed chopper and corresponding control schemes are confirmed through both simulation and experimental investigations. |
| first_indexed | 2025-11-14T08:57:16Z |
| format | Journal Article |
| id | curtin-20.500.11937-39099 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T08:57:16Z |
| publishDate | 2010 |
| publisher | Institute of Electrical and Electronic Engineers |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-390992017-02-28T01:41:01Z Flying-capacitor-based chopper circuit for dc capacitor voltage balancing in diode-clamped multilevel inverter Shukla, A. Ghosh, Arindam joshi, A. This paper proposes a flying-capacitor-based chopper circuit for dc capacitor voltage equalization in diode-clamped multilevel inverters. Its important features are reduced voltage stress across the chopper switches, possible reduction in the chopper switching frequency, improved reliability, and ride-throughcapability enhancement. This topology is analyzed using threeand four-level flying-capacitor-based chopper circuit configurations. These configurations are different in capacitor and semiconductor device count and correspondingly reduce the device voltage stresses by half and one-third, respectively. The detailed working principles and control schemes for these circuits are presented. It is shown that, by preferentially selecting the available chopper switch states, the dc-link capacitor voltages can be efficiently equalized in addition to having tightly regulated flying-capacitor voltages around their eferences. The various operating modes of the chopper are described along with their preferentialselection logic to achieve the desired performances. The performance of the proposed chopper and corresponding control schemes are confirmed through both simulation and experimental investigations. 2010 Journal Article http://hdl.handle.net/20.500.11937/39099 Institute of Electrical and Electronic Engineers restricted |
| spellingShingle | Shukla, A. Ghosh, Arindam joshi, A. Flying-capacitor-based chopper circuit for dc capacitor voltage balancing in diode-clamped multilevel inverter |
| title | Flying-capacitor-based chopper circuit for dc capacitor voltage balancing in diode-clamped multilevel inverter |
| title_full | Flying-capacitor-based chopper circuit for dc capacitor voltage balancing in diode-clamped multilevel inverter |
| title_fullStr | Flying-capacitor-based chopper circuit for dc capacitor voltage balancing in diode-clamped multilevel inverter |
| title_full_unstemmed | Flying-capacitor-based chopper circuit for dc capacitor voltage balancing in diode-clamped multilevel inverter |
| title_short | Flying-capacitor-based chopper circuit for dc capacitor voltage balancing in diode-clamped multilevel inverter |
| title_sort | flying-capacitor-based chopper circuit for dc capacitor voltage balancing in diode-clamped multilevel inverter |
| url | http://hdl.handle.net/20.500.11937/39099 |