Internal Power Balancing of an MMC-Based Large-Scale PV System Under Unbalanced Voltage Sags
Modular multilevel converters (MMCs) are capturing the spotlight in large-scale photovoltaic (PV) applications. Studies reported their ability to work under different PV power unbalance conditions; however, no study has covered their operation under voltage sag conditions. This article proposes a mu...
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Institute of Electrical and Electronics Engineers Inc.
2025
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| author | Elsanabary A. Mekhilef S. Fadilah Ab Aziz N. |
| author2 | 57221120034 |
| author_facet | 57221120034 Elsanabary A. Mekhilef S. Fadilah Ab Aziz N. |
| author_sort | Elsanabary A. |
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| content_provider | Universiti Tenaga Nasional |
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| continent | Asia |
| country | Malaysia |
| description | Modular multilevel converters (MMCs) are capturing the spotlight in large-scale photovoltaic (PV) applications. Studies reported their ability to work under different PV power unbalance conditions; however, no study has covered their operation under voltage sag conditions. This article proposes a multiobjective internal power balancing control to be applied to a competent PV-MMC configuration to simultaneously deal with both PV power unbalance and voltage sag conditions. The proposed strategy consists of two controllers: 1) a circulating current (CC) control which is responsible for balancing the power flow of the MMC under any PV power unbalance condition and 2) arm voltage compensation to deal with the unbalanced voltage sags and ensuring the CCs and submodule (SM) voltages are kept balanced without overmodulation issues. Also, the grid control is designed to keep a balanced current injection to the grid under any condition. The PV-MMC system and the proposed control are designed and tested using hardware-in-the-loop (HiL) and experimentally to validate the effectiveness of the control in eliminating any power unbalance under different operation conditions. ? 2013 IEEE. |
| format | Article |
| id | my.uniten.dspace-37168 |
| institution | Universiti Tenaga Nasional |
| publishDate | 2025 |
| publisher | Institute of Electrical and Electronics Engineers Inc. |
| record_format | dspace |
| spelling | my.uniten.dspace-371682025-03-03T15:48:12Z Internal Power Balancing of an MMC-Based Large-Scale PV System Under Unbalanced Voltage Sags Elsanabary A. Mekhilef S. Fadilah Ab Aziz N. 57221120034 57928298500 57203985173 Electric current control Electric inverters Electric load flow Electric power system control Power control Quality control Reactive power Grid control Inverter Legged locomotion Load flow Modular multilevel converter Modulars Multilevel converter Photovoltaic systems Power balancing Voltage sags Power quality Modular multilevel converters (MMCs) are capturing the spotlight in large-scale photovoltaic (PV) applications. Studies reported their ability to work under different PV power unbalance conditions; however, no study has covered their operation under voltage sag conditions. This article proposes a multiobjective internal power balancing control to be applied to a competent PV-MMC configuration to simultaneously deal with both PV power unbalance and voltage sag conditions. The proposed strategy consists of two controllers: 1) a circulating current (CC) control which is responsible for balancing the power flow of the MMC under any PV power unbalance condition and 2) arm voltage compensation to deal with the unbalanced voltage sags and ensuring the CCs and submodule (SM) voltages are kept balanced without overmodulation issues. Also, the grid control is designed to keep a balanced current injection to the grid under any condition. The PV-MMC system and the proposed control are designed and tested using hardware-in-the-loop (HiL) and experimentally to validate the effectiveness of the control in eliminating any power unbalance under different operation conditions. ? 2013 IEEE. Final 2025-03-03T07:48:12Z 2025-03-03T07:48:12Z 2024 Article 10.1109/JESTPE.2024.3399395 2-s2.0-85192704523 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85192704523&doi=10.1109%2fJESTPE.2024.3399395&partnerID=40&md5=5a41312a4592dc22252daf6db0eb9d82 https://irepository.uniten.edu.my/handle/123456789/37168 12 4 3729 3739 Institute of Electrical and Electronics Engineers Inc. Scopus |
| spellingShingle | Electric current control Electric inverters Electric load flow Electric power system control Power control Quality control Reactive power Grid control Inverter Legged locomotion Load flow Modular multilevel converter Modulars Multilevel converter Photovoltaic systems Power balancing Voltage sags Power quality Elsanabary A. Mekhilef S. Fadilah Ab Aziz N. Internal Power Balancing of an MMC-Based Large-Scale PV System Under Unbalanced Voltage Sags |
| title | Internal Power Balancing of an MMC-Based Large-Scale PV System Under Unbalanced Voltage Sags |
| title_full | Internal Power Balancing of an MMC-Based Large-Scale PV System Under Unbalanced Voltage Sags |
| title_fullStr | Internal Power Balancing of an MMC-Based Large-Scale PV System Under Unbalanced Voltage Sags |
| title_full_unstemmed | Internal Power Balancing of an MMC-Based Large-Scale PV System Under Unbalanced Voltage Sags |
| title_short | Internal Power Balancing of an MMC-Based Large-Scale PV System Under Unbalanced Voltage Sags |
| title_sort | internal power balancing of an mmc-based large-scale pv system under unbalanced voltage sags |
| topic | Electric current control Electric inverters Electric load flow Electric power system control Power control Quality control Reactive power Grid control Inverter Legged locomotion Load flow Modular multilevel converter Modulars Multilevel converter Photovoltaic systems Power balancing Voltage sags Power quality |
| url_provider | http://dspace.uniten.edu.my/ |