A New Topology of Modular Multilevel Converter With Voltage Self-Balancing Ability
The modular multilevel converter (MMC) has been used in the field of HVDC transmission due to its many advantages, but its voltage imbalance problem of sub-module capacitors affects the stable operation of the system. There are two kinds of methods for solving the capacitor voltage imbalance of the...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
IEEE
2019-01-01
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| Series: | IEEE Access |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/8930556/ |
| _version_ | 1830299631136800768 |
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| author | Hongchun Shu Shunguang Lei Xincui Tian |
| author_facet | Hongchun Shu Shunguang Lei Xincui Tian |
| author_sort | Hongchun Shu |
| collection | DOAJ |
| description | The modular multilevel converter (MMC) has been used in the field of HVDC transmission due to its many advantages, but its voltage imbalance problem of sub-module capacitors affects the stable operation of the system. There are two kinds of methods for solving the capacitor voltage imbalance of the MMC sub-module. The one is voltage balancing algorithm and the other one is improved topology. However, the complexity of the voltage balancing algorithm increases sharply when the number of voltage levels is high, which is not suitable for the MMC system with a high number of voltage levels. In this paper, a new topology with bidirectional voltage self-balancing capability is proposed. This topology adds the voltage balancing circuit between sub-modules on the conventional MMC topology, realizing voltage self-balancing without voltage balancing algorithm, and having a better effect of inhibition phase-to-phase circulation. The bidirectional voltage balancing capability, the voltage balancing effect and the circulation inhibition effect of the bidirectional voltage self-balancing topology are verified by MATLAB/Simulink simulation and experiment. |
| first_indexed | 2024-12-19T08:12:37Z |
| format | Article |
| id | doaj.art-138ad8ab19c34b0c8020de0d2ab9e2b2 |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-12-19T08:12:37Z |
| publishDate | 2019-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-138ad8ab19c34b0c8020de0d2ab9e2b22022-12-21T20:29:35ZengIEEEIEEE Access2169-35362019-01-01718478618479610.1109/ACCESS.2019.29588578930556A New Topology of Modular Multilevel Converter With Voltage Self-Balancing AbilityHongchun Shu0Shunguang Lei1https://orcid.org/0000-0002-5500-2631Xincui Tian2Faculty of Electric Power Engineering, Kunming University of Science and Technology, Kunming, ChinaFaculty of Electric Power Engineering, Kunming University of Science and Technology, Kunming, ChinaFaculty of Electric Power Engineering, Kunming University of Science and Technology, Kunming, ChinaThe modular multilevel converter (MMC) has been used in the field of HVDC transmission due to its many advantages, but its voltage imbalance problem of sub-module capacitors affects the stable operation of the system. There are two kinds of methods for solving the capacitor voltage imbalance of the MMC sub-module. The one is voltage balancing algorithm and the other one is improved topology. However, the complexity of the voltage balancing algorithm increases sharply when the number of voltage levels is high, which is not suitable for the MMC system with a high number of voltage levels. In this paper, a new topology with bidirectional voltage self-balancing capability is proposed. This topology adds the voltage balancing circuit between sub-modules on the conventional MMC topology, realizing voltage self-balancing without voltage balancing algorithm, and having a better effect of inhibition phase-to-phase circulation. The bidirectional voltage balancing capability, the voltage balancing effect and the circulation inhibition effect of the bidirectional voltage self-balancing topology are verified by MATLAB/Simulink simulation and experiment.https://ieeexplore.ieee.org/document/8930556/Modular multilevel converter (MMC)voltage balancing circuitbidirectional voltage self-balancingcirculation inhibition |
| spellingShingle | Hongchun Shu Shunguang Lei Xincui Tian A New Topology of Modular Multilevel Converter With Voltage Self-Balancing Ability IEEE Access Modular multilevel converter (MMC) voltage balancing circuit bidirectional voltage self-balancing circulation inhibition |
| title | A New Topology of Modular Multilevel Converter With Voltage Self-Balancing Ability |
| title_full | A New Topology of Modular Multilevel Converter With Voltage Self-Balancing Ability |
| title_fullStr | A New Topology of Modular Multilevel Converter With Voltage Self-Balancing Ability |
| title_full_unstemmed | A New Topology of Modular Multilevel Converter With Voltage Self-Balancing Ability |
| title_short | A New Topology of Modular Multilevel Converter With Voltage Self-Balancing Ability |
| title_sort | new topology of modular multilevel converter with voltage self balancing ability |
| topic | Modular multilevel converter (MMC) voltage balancing circuit bidirectional voltage self-balancing circulation inhibition |
| url | https://ieeexplore.ieee.org/document/8930556/ |
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