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

Max A Parker; Stephen J Finney

doi:10.1109/ICIT.2015.7125223

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

Max A Parker
, Stephen J Finney

Electronic And Electrical Engineering

Research output: Chapter in Book/Report/Conference proceeding › Chapter (peer-reviewed) › peer-review

2 Citations (Scopus)

154 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 language	English
Title of host publication	2015 IEEE International Conference on Industrial Technology (ICIT)
Place of Publication	Piscataway, NJ
Publisher	IEEE
Pages	969-975
Number of pages	7
ISBN (Print)	9781479977994
DOIs	https://doi.org/10.1109/ICIT.2015.7125223
Publication status	Published - 18 Jun 2015
Event	IEEE International Conference on Industrial Technology (ICIT2015) - Seville, Spain Duration: 17 Mar 2015 → 19 Mar 2015

Conference

Conference	IEEE International Conference on Industrial Technology (ICIT2015)
Abbreviated title	ICIT2015
Country/Territory	Spain
City	Seville
Period	17/03/15 → 19/03/15

Keywords

tandem converter
wind turbine generator
fault-tolerance
superconductivity

Access to Document

10.1109/ICIT.2015.7125223

Parker-Finney-ICIT2015-fault-tolerant-tandem-converter-multi-MW-superconducting-wind-turbineAccepted author manuscript, 822 KB

Underpinning Power Electronics 2012: Converters Theme
Finney, S. (Principal Investigator) & Holliday, D. (Co-investigator)
EPSRC (Engineering and Physical Sciences Research Council)
1/11/13 → 31/10/17
Project: Research
INNWIND
Leithead, B. (Principal Investigator) & Stock, A. (Researcher)
European Commission - FP7 - Cooperation only
1/11/12 → 31/10/17
Project: Research

Cite this

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

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.",

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author = "Parker, \{Max A\} and Finney, \{Stephen J\}",

note = "(c) 2015 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, 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 components of this work in other works.; IEEE International Conference on Industrial Technology (ICIT2015), ICIT2015 ; Conference date: 17-03-2015 Through 19-03-2015",

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Parker, MA & Finney, SJ 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). IEEE, Piscataway, NJ, pp. 969-975, IEEE International Conference on Industrial Technology (ICIT2015), Seville, Spain, 17/03/15. https://doi.org/10.1109/ICIT.2015.7125223

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AU - Finney, Stephen J

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N2 - 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.

AB - 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.

KW - tandem converter

KW - wind turbine generator

KW - fault-tolerance

KW - superconductivity

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ER -

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

Abstract

Conference

Keywords

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Projects

Underpinning Power Electronics 2012: Converters Theme

INNWIND

Cite this