Effect of capacitor voltage ripples on submodule active power control limits of cascaded multilevel converters
In the operation of cascaded H-bridge (CHB) converters and modular multilevel converters (MMCs) with energy storage or renewable power resources, unbalanced active power distribution among the submodules (SMs) is unavoidable. Depending on the operating conditions, there are certain upper and lower l...
| Main Authors: | , , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2021
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/151783 |
| _version_ | 1811693129345007616 |
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| author | Liang, Gaowen Tafti, Hossein Dehghani Farivar, Glen G. Pou, Josep Townsend, Christopher D. Konstantinou, Georgios Ceballos, Salvador |
| author2 | School of Electrical and Electronic Engineering |
| author_facet | School of Electrical and Electronic Engineering Liang, Gaowen Tafti, Hossein Dehghani Farivar, Glen G. Pou, Josep Townsend, Christopher D. Konstantinou, Georgios Ceballos, Salvador |
| author_sort | Liang, Gaowen |
| collection | NTU |
| description | In the operation of cascaded H-bridge (CHB) converters and modular multilevel converters (MMCs) with energy storage or renewable power resources, unbalanced active power distribution among the submodules (SMs) is unavoidable. Depending on the operating conditions, there are certain upper and lower limits on the active power that can be processed by a single SM or a subset of SMs. The control system needs to restrict the SM power references to these limits, hence, accurate knowledge of the power limits is important. In existing methods to derive the power limits, the SM capacitor voltages are assumed to have negligible ripples, whereas in practice the ripples can be considerable. This paper analyzes the effect of capacitor voltage ripples on the SM active power control limits and highlights the importance of considering the ripple effect. A methodology is proposed to accurately incorporate capacitor voltage ripples in the derivation of SM active power control limits. Simulation and experimental results are provided to evaluate the effectiveness of the proposed methodology. |
| first_indexed | 2024-10-01T06:46:46Z |
| format | Journal Article |
| id | ntu-10356/151783 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T06:46:46Z |
| publishDate | 2021 |
| record_format | dspace |
| spelling | ntu-10356/1517832022-01-01T20:11:36Z Effect of capacitor voltage ripples on submodule active power control limits of cascaded multilevel converters Liang, Gaowen Tafti, Hossein Dehghani Farivar, Glen G. Pou, Josep Townsend, Christopher D. Konstantinou, Georgios Ceballos, Salvador School of Electrical and Electronic Engineering Energy Research Institute @ NTU (ERI@N) Engineering::Electrical and electronic engineering Active Power Control Limits Cascaded H-Bridge In the operation of cascaded H-bridge (CHB) converters and modular multilevel converters (MMCs) with energy storage or renewable power resources, unbalanced active power distribution among the submodules (SMs) is unavoidable. Depending on the operating conditions, there are certain upper and lower limits on the active power that can be processed by a single SM or a subset of SMs. The control system needs to restrict the SM power references to these limits, hence, accurate knowledge of the power limits is important. In existing methods to derive the power limits, the SM capacitor voltages are assumed to have negligible ripples, whereas in practice the ripples can be considerable. This paper analyzes the effect of capacitor voltage ripples on the SM active power control limits and highlights the importance of considering the ripple effect. A methodology is proposed to accurately incorporate capacitor voltage ripples in the derivation of SM active power control limits. Simulation and experimental results are provided to evaluate the effectiveness of the proposed methodology. Accepted version This work was supported by the Office of Naval Research U.S. under DUNS Code: 595886219. It has also been partially supported by the Spanish Centre for the Development of Industrial Technology (CDTI) through the "Cervera" program under the grant agreement CER-20191002 ENERISLA. 2021-12-09T06:07:22Z 2021-12-09T06:07:22Z 2021 Journal Article Liang, G., Tafti, H. D., Farivar, G. G., Pou, J., Townsend, C. D., Konstantinou, G. & Ceballos, S. (2021). Effect of capacitor voltage ripples on submodule active power control limits of cascaded multilevel converters. IEEE Transactions On Industrial Electronics. https://dx.doi.org/10.1109/TIE.2021.3091934 0278-0046 https://hdl.handle.net/10356/151783 10.1109/TIE.2021.3091934 en IEEE Transactions on Industrial Electronics © 2021 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/TIE.2021.3091934. application/pdf |
| spellingShingle | Engineering::Electrical and electronic engineering Active Power Control Limits Cascaded H-Bridge Liang, Gaowen Tafti, Hossein Dehghani Farivar, Glen G. Pou, Josep Townsend, Christopher D. Konstantinou, Georgios Ceballos, Salvador Effect of capacitor voltage ripples on submodule active power control limits of cascaded multilevel converters |
| title | Effect of capacitor voltage ripples on submodule active power control limits of cascaded multilevel converters |
| title_full | Effect of capacitor voltage ripples on submodule active power control limits of cascaded multilevel converters |
| title_fullStr | Effect of capacitor voltage ripples on submodule active power control limits of cascaded multilevel converters |
| title_full_unstemmed | Effect of capacitor voltage ripples on submodule active power control limits of cascaded multilevel converters |
| title_short | Effect of capacitor voltage ripples on submodule active power control limits of cascaded multilevel converters |
| title_sort | effect of capacitor voltage ripples on submodule active power control limits of cascaded multilevel converters |
| topic | Engineering::Electrical and electronic engineering Active Power Control Limits Cascaded H-Bridge |
| url | https://hdl.handle.net/10356/151783 |
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