Design of a fault-tolerant tandem converter for a multi-MW superconducting offshore wind turbine generator

Max A Parker, Stephen J Finney

Research output: Chapter in Book/Report/Conference proceedingChapter (peer-reviewed)

2 Citations (Scopus)
123 Downloads (Pure)

Abstract

A fault-tolerant tandem converter, based on a current-source converter and cascaded multilevel voltage-source active filter, is proposed as the grid interface for a 10MW superconducting direct-drive wind turbine generator. The converter reduces the possibility of a short-circuit fault, an issue with the extremely low generator reactance, while having a significantly lower DC capacitance requirement than an equivalent modular multilevel converter, although this is still high due to an extremely low generator frequency. Active filter DC capacitance is optimised, and a control system designed to prevent large DC voltage peaks during transients, and is verified in simulation. DC voltage balancing between the phases of the filter limits the torque control bandwidth of the converter if the capacitance is to be minimised, due to the slow speed of the balancing controller.
Original languageEnglish
Title of host publication2015 IEEE International Conference on Industrial Technology (ICIT)
PublisherIEEE
Pages969-975
Number of pages7
ISBN (Print)9781479977994
DOIs
Publication statusPublished - 1 Mar 2015
EventIEEE International Conference on Industrial Technology (ICIT2015) - Seville, Spain
Duration: 17 Mar 201519 Mar 2015

Conference

ConferenceIEEE International Conference on Industrial Technology (ICIT2015)
Abbreviated titleICIT2015
CountrySpain
CitySeville
Period17/03/1519/03/15

Keywords

  • tandem converter
  • wind turbine generator
  • fault-tolerance
  • superconductivity

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  • Cite this

    Parker, M. A., & Finney, S. J. (2015). Design of a fault-tolerant tandem converter for a multi-MW superconducting offshore wind turbine generator. In 2015 IEEE International Conference on Industrial Technology (ICIT) (pp. 969-975). IEEE. https://doi.org/10.1109/ICIT.2015.7125223