Title: Low voltage ride-through capability improvement of doubly fed induction generator using series connected damping resistances

Authors: Youness Boukhris; Aboubakr El Makrini; Hassan El Moussaoui; Hassane El Markhi

Addresses: The Signals, Systems and Components Laboratory, Sidi Mohamed Ben Abdellah University, Fez, Morocco ' The Signals, Systems and Components Laboratory, Sidi Mohamed Ben Abdellah University, Fez, Morocco ' The Signals, Systems and Components Laboratory, Sidi Mohamed Ben Abdellah University, Fez, Morocco ' The Signals, Systems and Components Laboratory, Sidi Mohamed Ben Abdellah University, Fez, Morocco

Abstract: This paper proposes a control strategy to improve low voltage ride through (LVRT) capability of doubly fed induction generator (DFIG)-based wind turbines in response to grid fault occurrences or grid fault clearances to follow the requirements defined by the grid codes. The proposed scheme involves the use of series connected damping resistances (SCDR) and bypass switching devices coupled with rotor side converter (RSC), by which current peaks at both the rotor side and stator side can be reduced. The steady state behaviour under normal condition and dynamic behaviour of DFIG-based wind turbines during grid faults using the proposed strategy is simulated and assessed, and the results are compared with the scheme using crowbar circuit.

Keywords: wind turbine; doubly fed induction generator; DFIG; grid fault; low voltage ride through; LVRT; damping resistances; rotor side converter; RSC; grid side converter; GSC.

DOI: 10.1504/IJMIC.2017.085947

International Journal of Modelling, Identification and Control, 2017 Vol.28 No.2, pp.167 - 176

Received: 12 Mar 2016
Accepted: 31 Oct 2016
Published online: 18 Aug 2017 *

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