Submodule Capacitor Voltage Balancing Through High-Frequency-Side Control for Multiport MMC-Based Solid-State Transformers
This article proposes a novel submodule capacitor voltage balancing control for multiport modular multilevel converter (MMC)-based solid-state transformers. To balance each submodule capacitor voltage, the balancing control is usually applied to the MMC. However, the low switching frequency operatio...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
IEEE
2024-01-01
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| Series: | IEEE Open Journal of the Industrial Electronics Society |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/10496178/ |
| _version_ | 1797201314947530752 |
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| author | Lukas Antonio Budiwicaksana Dong-Choon Lee |
| author_facet | Lukas Antonio Budiwicaksana Dong-Choon Lee |
| author_sort | Lukas Antonio Budiwicaksana |
| collection | DOAJ |
| description | This article proposes a novel submodule capacitor voltage balancing control for multiport modular multilevel converter (MMC)-based solid-state transformers. To balance each submodule capacitor voltage, the balancing control is usually applied to the MMC. However, the low switching frequency operation and bulky arm inductance of the MMC limit the controller bandwidth and stability margin. These issues are addressed by moving the balancing control to the back-end dc/dc converter, which is operated at high switching frequency. The controller gains are designed based on the small-signal model. The superiority of the proposed controller over the conventional one has been verified through Bode plot, pole-zero map, and Nyquist path analyses. Experimental results for a 2.4-kW prototype system have also verified the accuracy of the model and effectiveness of the proposed balancing control for step load changes. |
| first_indexed | 2024-04-24T07:45:35Z |
| format | Article |
| id | doaj.art-49132ec1b5ba4fa98637a34697340493 |
| institution | Directory Open Access Journal |
| issn | 2644-1284 |
| language | English |
| last_indexed | 2024-04-24T07:45:35Z |
| publishDate | 2024-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Open Journal of the Industrial Electronics Society |
| spelling | doaj.art-49132ec1b5ba4fa98637a346973404932024-04-18T23:00:57ZengIEEEIEEE Open Journal of the Industrial Electronics Society2644-12842024-01-01530231610.1109/OJIES.2024.338694810496178Submodule Capacitor Voltage Balancing Through High-Frequency-Side Control for Multiport MMC-Based Solid-State TransformersLukas Antonio Budiwicaksana0https://orcid.org/0000-0003-1874-9397Dong-Choon Lee1https://orcid.org/0000-0003-0618-7630Department of Electrical Engineering, Yeungnam University, Gyeongsan, South KoreaDepartment of Electrical Engineering, Yeungnam University, Gyeongsan, South KoreaThis article proposes a novel submodule capacitor voltage balancing control for multiport modular multilevel converter (MMC)-based solid-state transformers. To balance each submodule capacitor voltage, the balancing control is usually applied to the MMC. However, the low switching frequency operation and bulky arm inductance of the MMC limit the controller bandwidth and stability margin. These issues are addressed by moving the balancing control to the back-end dc/dc converter, which is operated at high switching frequency. The controller gains are designed based on the small-signal model. The superiority of the proposed controller over the conventional one has been verified through Bode plot, pole-zero map, and Nyquist path analyses. Experimental results for a 2.4-kW prototype system have also verified the accuracy of the model and effectiveness of the proposed balancing control for step load changes.https://ieeexplore.ieee.org/document/10496178/Balancing controlmodelingmodular multilevel converters (MMCs)solid-state transformer (SST) |
| spellingShingle | Lukas Antonio Budiwicaksana Dong-Choon Lee Submodule Capacitor Voltage Balancing Through High-Frequency-Side Control for Multiport MMC-Based Solid-State Transformers IEEE Open Journal of the Industrial Electronics Society Balancing control modeling modular multilevel converters (MMCs) solid-state transformer (SST) |
| title | Submodule Capacitor Voltage Balancing Through High-Frequency-Side Control for Multiport MMC-Based Solid-State Transformers |
| title_full | Submodule Capacitor Voltage Balancing Through High-Frequency-Side Control for Multiport MMC-Based Solid-State Transformers |
| title_fullStr | Submodule Capacitor Voltage Balancing Through High-Frequency-Side Control for Multiport MMC-Based Solid-State Transformers |
| title_full_unstemmed | Submodule Capacitor Voltage Balancing Through High-Frequency-Side Control for Multiport MMC-Based Solid-State Transformers |
| title_short | Submodule Capacitor Voltage Balancing Through High-Frequency-Side Control for Multiport MMC-Based Solid-State Transformers |
| title_sort | submodule capacitor voltage balancing through high frequency side control for multiport mmc based solid state transformers |
| topic | Balancing control modeling modular multilevel converters (MMCs) solid-state transformer (SST) |
| url | https://ieeexplore.ieee.org/document/10496178/ |
| work_keys_str_mv | AT lukasantoniobudiwicaksana submodulecapacitorvoltagebalancingthroughhighfrequencysidecontrolformultiportmmcbasedsolidstatetransformers AT dongchoonlee submodulecapacitorvoltagebalancingthroughhighfrequencysidecontrolformultiportmmcbasedsolidstatetransformers |