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Fault-tolerant control of an open-winding brushless doubly-fed wind power generator system with dual three-level converter

Fault-tolerant control of an open-winding brushless doubly-fed wind power generator system with... To improve the fault redundancy capability for the high reliability requirement of a brushless doubly-fed generation system applied to large offshore wind farms, the control winding of a brushless doubly-fed reluctance generator is designed as an open-winding structure. Consequently, the two ends of the control winding are connected via dual three-phase converters for the emerging open-winding structure. Therefore, a novel fault-tolerant control strategy based on the direct power control scheme is brought to focus in this paper. Based on the direct power control (DPC) strategy, the post-fault voltage vector selection method is explained in detail according to the fault types of the dual converters. The fault-tolerant control strategy proposed enables the open-winding brushless doubly-fed reluctance generator (BDFRG) system to operate normally in one, two, or three switches fault of the converter, simultaneously achieving power tracking control. The presented results verify the feasibility and validity of the scheme proposed. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Frontiers in Energy Springer Journals

Fault-tolerant control of an open-winding brushless doubly-fed wind power generator system with dual three-level converter

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References (23)

Publisher
Springer Journals
Copyright
Copyright © Higher Education Press 2020
ISSN
2095-1701
eISSN
2095-1698
DOI
10.1007/s11708-020-0711-2
Publisher site
See Article on Publisher Site

Abstract

To improve the fault redundancy capability for the high reliability requirement of a brushless doubly-fed generation system applied to large offshore wind farms, the control winding of a brushless doubly-fed reluctance generator is designed as an open-winding structure. Consequently, the two ends of the control winding are connected via dual three-phase converters for the emerging open-winding structure. Therefore, a novel fault-tolerant control strategy based on the direct power control scheme is brought to focus in this paper. Based on the direct power control (DPC) strategy, the post-fault voltage vector selection method is explained in detail according to the fault types of the dual converters. The fault-tolerant control strategy proposed enables the open-winding brushless doubly-fed reluctance generator (BDFRG) system to operate normally in one, two, or three switches fault of the converter, simultaneously achieving power tracking control. The presented results verify the feasibility and validity of the scheme proposed.

Journal

Frontiers in Energy – Springer Journals

Published: Feb 1, 2023

Keywords: open-winding; brushless doubly-fed reluctance generator (BDFRG); direct power control; fault-tolerant control; multi-level converter; wind power

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