A Series Chain-Link Modular Multilevel DC-DC Converter For High Voltage and High Power Applications

Saleh, Beeond M.; Costabeber, Alessandro; Watson, Alan J.; Clare, Jon C.

Abstract

© 2020 IEEE. In high voltage and high-power applications, many modular multilevel DC-DC converter topologies have been proposed for DC voltage scaling applications. In most of those proposed a three phase transformer is required. The construction of a three-phase transformer at high power and high voltages can be challenging. For example, in multi-terminal HVDC applications, several hundred kilo voltsof isolation may be required. Additionally, a high number of submodules is required in most of the high voltage modular multilevel DC-DC converters. In this paper, a new modular multilevel DC-DC converter is proposed for high voltage applications, which aims to significantly reduce the number of submodules and achieve a more compact stored energy distribution. Furthermore, a number of lower voltage rated transformers are used to replace a single high voltage component. A simulation system for a 10MW, 20kV-20kV Series Chain-Link DC-DC converter, simulated in PLECS to verify the proposed topology.

Citation

Saleh, B. M., Costabeber, A., Watson, A. J., & Clare, J. C. (2020, November). A Series Chain-Link Modular Multilevel DC-DC Converter For High Voltage and High Power Applications. Presented at 2020 IEEE 21st Workshop on Control and Modeling for Power Electronics (COMPEL), Aalborg, Denmark

• Presentation Conference Type: Edited Proceedings
• Conference Name: 2020 IEEE 21st Workshop on Control and Modeling for Power Electronics (COMPEL)
• Start Date: Nov 9, 2020
• End Date: Nov 12, 2020
• Acceptance Date: Aug 3, 2020
• Online Publication Date: Nov 30, 2020
• Publication Date: Nov 9, 2020
• Deposit Date: Feb 26, 2021
• Publicly Available Date: Feb 26, 2021
• Publisher: Institute of Electrical and Electronics Engineers
• Series Title: IEEE Workshop on Control and Modeling for Power Electronics. Proceedings
• Series Number: 21
• Series ISSN: 2151-0997
• ISBN: 9781728171616
• DOI: https://doi.org/10.1109/COMPEL49091.2020.9265662
• Public URL: https://nottingham-repository.worktribe.com/output/5207331
• Publisher URL: https://ieeexplore-ieee-org.ezproxy.nottingham.ac.uk/document/9265662
• Additional Information: © 2020 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.