Tang, Yuan, Ran, Li, Wyllie, P. B., Alatise, Olayiwola M., Yu, J. and Wang, X. M. (2015) Offshore low frequency AC transmission with back-to-back modular multilevel converter (MMC). In: 11th IET International Conference on AC and DC Power Transmission, Birmingham, UK, 10-12 Feb 2015. Published in: 11th IET International Conference on AC and DC Power Transmission 046 (8 .). ISBN 9781849199827. doi:10.1049/cp.2015.0020

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Abstract

This paper evaluates the use of a back-to-back modular multilevel converter (B2B-MMC) in offshore low frequency (LF) AC transmission. The scheme is compared to two alternative transmission technologies: DC and 50Hz AC. The MMC topology is further compared to a cycloconverter. A high level design of a ±120kVdc, 250MW B2B-MMC system is described, with the total volume and weight of submodule capacitors estimated. The system performance is studied for both normal and fault conditions by computer simulation. Analysis shows that the dynamics of the controller that regulates the DC bus voltage may not be fast enough for the B2B-MMC, and feedforward control may be needed.

Item Type:	Conference Item (Lecture)
Subjects:	T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions:	Faculty of Science > Engineering
Journal or Publication Title:	11th IET International Conference on AC and DC Power Transmission
Publisher:	IET
ISBN:	9781849199827
Official Date:	2015
Dates:	Date Event 2015 Published
Page Range:	046 (8 .)
DOI:	10.1049/cp.2015.0020
Status:	Peer Reviewed
Publication Status:	Published
Conference Paper Type:	Lecture
Title of Event:	11th IET International Conference on AC and DC Power Transmission
Type of Event:	Conference
Location of Event:	Birmingham, UK
Date(s) of Event:	10-12 Feb 2015

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