Per-phase controller for medium voltage full-bridge modular multilevel converters

Noori, Abdulrazzaq; Costabeber, A.; Sumner, M.; Thomas, D.

Abstract

This work proposes a per-phase control architecture for a fullbridge modular multilevel converter (FB-MMC) intended for medium voltage applications, such as MVDC multi-terminal distribution networks in off-shore wind farms or MVDC networks in industrial plants. The converter under study operates with 20kV on the DC side and is connected to an 11kV AC grid through a Δ-Y transformer. The response to a single line to ground (SLG) AC fault of the converter controlled with the proposed per-phase control architecture is compared with the conventional MMC using dq control. Simulation results in Matlab-Plecs prove that the proposed control approach has better response to a SLG fault compared with the conventional one, while maintaining a simple structure.

Citation

Noori, A., Costabeber, A., Sumner, M., & Thomas, D. (2017). Per-phase controller for medium voltage full-bridge modular multilevel converters. In International Conference on Resilience of Transmission and Distribution Networks (RTDN 2017). https://doi.org/10.1049/cp.2017.0331

• Conference Name: IET International Conference on Resilience of Transmission and Distribution Networks (RTDN 2017)
• Conference Location: Birmingham, UK
• Start Date: Sep 26, 2017
• End Date: Sep 28, 2017
• Acceptance Date: Jun 15, 2017
• Publication Date: 2017
• Deposit Date: Aug 2, 2018
• Publicly Available Date: Aug 6, 2018
• Book Title: International Conference on Resilience of Transmission and Distribution Networks (RTDN 2017)
• Chapter Number: NA
• ISBN: 978-1-78561-662-4
• DOI: https://doi.org/10.1049/cp.2017.0331
• Public URL: https://nottingham-repository.worktribe.com/output/894291
• Publisher URL: http://digital-library.theiet.org/content/conferences/10.1049/cp.2017.0331