A generalized voltage balancing algorithm for modular multilevel cascaded converters
The use of an inter-cell voltage balancing scheme to evenly distribute the total dc-link voltage among the multiple floating capacitors is crucial in modular multilevel cascaded converters (MMCs). This paper presents an intuitively simple and computationally efficient sorting-based modulation algori...
| Main Authors: | , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2020
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/136973 |
| _version_ | 1811695393480638464 |
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| author | Rodriguez, Ezequiel Farivar, Glen G. Pou, Josep Tafti, Hossein Dehghani Townsend, Christopher D. Vazquez, Sergio |
| author2 | School of Electrical and Electronic Engineering |
| author_facet | School of Electrical and Electronic Engineering Rodriguez, Ezequiel Farivar, Glen G. Pou, Josep Tafti, Hossein Dehghani Townsend, Christopher D. Vazquez, Sergio |
| author_sort | Rodriguez, Ezequiel |
| collection | NTU |
| description | The use of an inter-cell voltage balancing scheme to evenly distribute the total dc-link voltage among the multiple floating capacitors is crucial in modular multilevel cascaded converters (MMCs). This paper presents an intuitively simple and computationally efficient sorting-based modulation algorithm for capacitor voltage balancing applicable to any MMC. The proposed modulation stage is inherently decoupled from the upper-level control scheme and it is able to both generate the required converter output voltage and balance the capacitor voltages suitably. Furthermore, it maintains a constant harmonic performance even as the number of switching transitions is varied to achieve voltage balance under different loading conditions with minimum incurred switching losses. The effectiveness of the proposed algorithm is validated on an experimental seven-level 350-VA single-phase cascaded H-bridge working as a static compensator. In addition, a simulated 350-VA system is used to obtain complimentary results. |
| first_indexed | 2024-10-01T07:22:45Z |
| format | Journal Article |
| id | ntu-10356/136973 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T07:22:45Z |
| publishDate | 2020 |
| record_format | dspace |
| spelling | ntu-10356/1369732020-02-10T06:34:38Z A generalized voltage balancing algorithm for modular multilevel cascaded converters Rodriguez, Ezequiel Farivar, Glen G. Pou, Josep Tafti, Hossein Dehghani Townsend, Christopher D. Vazquez, Sergio School of Electrical and Electronic Engineering IEEE Energy Conversion Congress and Exposition (ECCE) 2019 Engineering::Electrical and electronic engineering Power Converter Capacitors The use of an inter-cell voltage balancing scheme to evenly distribute the total dc-link voltage among the multiple floating capacitors is crucial in modular multilevel cascaded converters (MMCs). This paper presents an intuitively simple and computationally efficient sorting-based modulation algorithm for capacitor voltage balancing applicable to any MMC. The proposed modulation stage is inherently decoupled from the upper-level control scheme and it is able to both generate the required converter output voltage and balance the capacitor voltages suitably. Furthermore, it maintains a constant harmonic performance even as the number of switching transitions is varied to achieve voltage balance under different loading conditions with minimum incurred switching losses. The effectiveness of the proposed algorithm is validated on an experimental seven-level 350-VA single-phase cascaded H-bridge working as a static compensator. In addition, a simulated 350-VA system is used to obtain complimentary results. Accepted version 2020-02-10T02:58:09Z 2020-02-10T02:58:09Z 2019 Journal Article Rodriguez, E., Farivar, G. G., Pou, J., Tafti, H. D., Townsend, C. D., & Vazquez, S. (2019). A generalized voltage balancing algorithm for modular multilevel cascaded converters. IEEE Energy Conversion Congress and Exposition (ECCE) 2019. doi:10.1109/ECCE.2019.8912648 9781728103952 - https://hdl.handle.net/10356/136973 10.1109/ECCE.2019.8912648 2-s2.0-85076786701 214 218 en © 2019 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. The published version is available at: https://doi.org/10.1109/ECCE.2019.8912648 application/pdf |
| spellingShingle | Engineering::Electrical and electronic engineering Power Converter Capacitors Rodriguez, Ezequiel Farivar, Glen G. Pou, Josep Tafti, Hossein Dehghani Townsend, Christopher D. Vazquez, Sergio A generalized voltage balancing algorithm for modular multilevel cascaded converters |
| title | A generalized voltage balancing algorithm for modular multilevel cascaded converters |
| title_full | A generalized voltage balancing algorithm for modular multilevel cascaded converters |
| title_fullStr | A generalized voltage balancing algorithm for modular multilevel cascaded converters |
| title_full_unstemmed | A generalized voltage balancing algorithm for modular multilevel cascaded converters |
| title_short | A generalized voltage balancing algorithm for modular multilevel cascaded converters |
| title_sort | generalized voltage balancing algorithm for modular multilevel cascaded converters |
| topic | Engineering::Electrical and electronic engineering Power Converter Capacitors |
| url | https://hdl.handle.net/10356/136973 |
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