Distributed control for a modular multilevel converter
Conventional centralized control strategies may reduce the flexibility and expandability of a modular multilevel converter (MMC) system. To tackle this issue, this paper proposes a distributed control architecture that is capable of assigning certain control tasks to distributed local controllers an...
| Main Authors: | , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2019
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| Online Access: | https://hdl.handle.net/10356/90250 http://hdl.handle.net/10220/48466 |
| _version_ | 1811681448289107968 |
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| author | Yang, Shunfeng Tang, Yi Wang, Peng |
| author2 | School of Electrical and Electronic Engineering |
| author_facet | School of Electrical and Electronic Engineering Yang, Shunfeng Tang, Yi Wang, Peng |
| author_sort | Yang, Shunfeng |
| collection | NTU |
| description | Conventional centralized control strategies may reduce the flexibility and expandability of a modular multilevel converter (MMC) system. To tackle this issue, this paper proposes a distributed control architecture that is capable of assigning certain control tasks to distributed local controllers and improves the modularity of an MMC system. A central controller dealing with the output current regulation based on sensed arm currents is adopted. The control of MMC internal dynamics and the pulsewidth modulation (PWM) generation are distributed into local controllers. Unlike the conventional MMC control that needs all submodule capacitor voltages for capacitor voltage averaging, the proposed capacitor voltage control only relies on local submodule voltage measurement. Consequently, communication-intensive capacitor voltage transmission in each control cycle is not required and the communication burden of the control system can be significantly reduced. The control loops and possible control conflicts among submodules are presented and considered for system stability analysis. The effectiveness of the proposed distributed control architecture and capacitor voltage control for an MMC are confirmed by the start-up, steady state, and transient experimental results. |
| first_indexed | 2024-10-01T03:41:06Z |
| format | Journal Article |
| id | ntu-10356/90250 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T03:41:06Z |
| publishDate | 2019 |
| record_format | dspace |
| spelling | ntu-10356/902502020-03-07T14:02:39Z Distributed control for a modular multilevel converter Yang, Shunfeng Tang, Yi Wang, Peng School of Electrical and Electronic Engineering Distributed Control Strategy DRNTU::Engineering::Electrical and electronic engineering Capacitor Voltage Control Conventional centralized control strategies may reduce the flexibility and expandability of a modular multilevel converter (MMC) system. To tackle this issue, this paper proposes a distributed control architecture that is capable of assigning certain control tasks to distributed local controllers and improves the modularity of an MMC system. A central controller dealing with the output current regulation based on sensed arm currents is adopted. The control of MMC internal dynamics and the pulsewidth modulation (PWM) generation are distributed into local controllers. Unlike the conventional MMC control that needs all submodule capacitor voltages for capacitor voltage averaging, the proposed capacitor voltage control only relies on local submodule voltage measurement. Consequently, communication-intensive capacitor voltage transmission in each control cycle is not required and the communication burden of the control system can be significantly reduced. The control loops and possible control conflicts among submodules are presented and considered for system stability analysis. The effectiveness of the proposed distributed control architecture and capacitor voltage control for an MMC are confirmed by the start-up, steady state, and transient experimental results. Accepted version 2019-05-29T09:01:56Z 2019-12-06T17:44:01Z 2019-05-29T09:01:56Z 2019-12-06T17:44:01Z 2017 Journal Article Yang, S., Tang, Y., & Wang, P. (2018). Distributed control for a modular multilevel converter. IEEE Transactions on Power Electronics, 33(7), 5578-5591. doi:10.1109/TPEL.2017.2751254 0885-8993 https://hdl.handle.net/10356/90250 http://hdl.handle.net/10220/48466 10.1109/TPEL.2017.2751254 en IEEE Transactions on Power Electronics © 2017 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/TPEL.2017.2751254 13 p. application/pdf |
| spellingShingle | Distributed Control Strategy DRNTU::Engineering::Electrical and electronic engineering Capacitor Voltage Control Yang, Shunfeng Tang, Yi Wang, Peng Distributed control for a modular multilevel converter |
| title | Distributed control for a modular multilevel converter |
| title_full | Distributed control for a modular multilevel converter |
| title_fullStr | Distributed control for a modular multilevel converter |
| title_full_unstemmed | Distributed control for a modular multilevel converter |
| title_short | Distributed control for a modular multilevel converter |
| title_sort | distributed control for a modular multilevel converter |
| topic | Distributed Control Strategy DRNTU::Engineering::Electrical and electronic engineering Capacitor Voltage Control |
| url | https://hdl.handle.net/10356/90250 http://hdl.handle.net/10220/48466 |
| work_keys_str_mv | AT yangshunfeng distributedcontrolforamodularmultilevelconverter AT tangyi distributedcontrolforamodularmultilevelconverter AT wangpeng distributedcontrolforamodularmultilevelconverter |