A coordinated control approach for DC link and rotor crowbars to improve fault ride-through of DFIG based wind turbines
Article
Article Title | A coordinated control approach for DC link and rotor crowbars to improve fault ride-through of DFIG based wind turbines |
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ERA Journal ID | 4453 |
Article Category | Article |
Authors | Haidar, Ahmed M. A. (Author), Muttaqi, Kashem M. (Author) and Hagh, Mehrdad Tarafdar (Author) |
Journal Title | IEEE Transactions on Industry Applications |
Journal Citation | 53 (4), pp. 4073-4086 |
Number of Pages | 15 |
Year | 2017 |
Publisher | IEEE (Institute of Electrical and Electronics Engineers) |
Place of Publication | New York, United States |
ISSN | 0093-9994 |
1939-9367 | |
Digital Object Identifier (DOI) | https://doi.org/10.1109/TIA.2017.2686341 |
Web Address (URL) | http://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=7884931 |
Abstract | Nowadays, most double fed induction generators (DFIGs)-based wind turbines are equipped with a rotor crowbar connected in parallel with the rotor side converter (RSC). The parallel rotor side crowbar (PRSC) is used to protect the RSC and dc-link capacitor by dissipating the rotor energy during grid fault condition. In this paper, two types of crowbar protections are used, one in the rotor winding and the second in the dc link. During the fault condition, the rotor winding crowbar connects in series with the rotor winding and RSC to decrease the RSC current and dissipate the rotor energy. The general PRSC does not have the ability to significantly decrease the over-current. To protect the semiconductor switches of RSC, DFIG should not be kept connected with the utility grids under severe faults. The dc-link capacitor crowbar (DCCC) operates only if the dc capacitor voltage exceeds a threshold level. Both the series rotor side crowbar (SRSC) and the DCCC operate in coordination with each other to protect RSC and dc link during fault condition, and improve the fault ride through of the DFIG. Using the proposed SRSC, RSC continues its operation to control the DFIG during fault condition. Thereby, the reactive power can be injected to support the voltage at the point of common coupling. The behavior of the DFIG is investigated when the combined crowbars are operating with the proposed coordinated control approach and results are presented. |
Keywords | crowbar protection, dc link, DFIG, low voltage ride-through (LVRT), parallel rotor crowbars, series rotor crowbar, vector control |
ANZSRC Field of Research 2020 | 400803. Electrical energy generation (incl. renewables, excl. photovoltaics) |
400899. Electrical engineering not elsewhere classified | |
Public Notes | © 2017 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. |
Byline Affiliations | University of Wollongong |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q44z7/a-coordinated-control-approach-for-dc-link-and-rotor-crowbars-to-improve-fault-ride-through-of-dfig-based-wind-turbines
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