Title: Open-switch fault detection scheme in wind energy conversion system based on rotor currents analysis

Authors: Bilel Touaiti; Hechmi Ben Azza; Mohamed Jemli

Addresses: Université de Tunis, Ecole Nationale Supérieure d'Ingénieurs de Tunis (ENSIT), Laboratoire de l'Ingénierie des Systèmes Industriel et des Energies Renouvelable (LISIER), 5 avenue Taha Hussein, BP 56, Montfleury, 1008 Tunis, Tunisia; Office National de la Télédiffusion (ONT), Centre Ain Draham, Cité Ennassim 1 Montplaisir BP399, Tunis-1080-Cedex-Tunisie ' Université de Tunis, Ecole Nationale Supérieure d'Ingénieurs de Tunis (ENSIT), Laboratoire de l'Ingénierie des Systèmes Industriel et des Energies Renouvelable (LISIER), 5 avenue Taha Hussein, BP 56, Montfleury, 1008 Tunis, Tunisia ' Université de Tunis, Ecole Nationale Supérieure d'Ingénieurs de Tunis (ENSIT), Laboratoire de l'Ingénierie des Systèmes Industriel et des Energies Renouvelable (LISIER), 5 avenue Taha Hussein, BP 56, Montfleury, 1008 Tunis, Tunisia

Abstract: To deal with the performance and service continuity of doubly fed induction generator (DFIG) based wind energy conversion systems (WECSs) during open-switch Insulated Gate Bipolar Transistor (IGBT) fault, a fault-tolerant Voltage Source Inverter (VSI) is proposed. The fault-tolerant VSI is designed with redundancy leg to replace the faulty leg after open-switch fault occurrence. In this investigation, we propose a new topology of DC-Bus tied DFIG based on uncontrolled rectifier in stator side. A Field Oriented Control (FOC) scheme is used in this paper to control the DFIGURE The open-switch IGBT fault is studied and a fault detection scheme based on rotor currents analysing within healthy and faulty conditions is proposed. Case study results show that the proposed fault-tolerant VSI can ensure the service continuity of DFIG-DC system. Experimental results are presented in this paper to validate the proposed fault detection scheme.

Keywords: WECS; wind energy conversion system; DFIG; doubly fed induction generator; fault tolerant voltage source inverter (VSI); redundant leg; fault detection; dSPACE DS 1104; control system; HVDC; high voltage direct current; FOC; field oriented control; DC-bus.

DOI: 10.1504/IJMIC.2021.123368

International Journal of Modelling, Identification and Control, 2021 Vol.38 No.3/4, pp.201 - 210

Received: 02 Jul 2020
Accepted: 12 Jan 2021
Published online: 13 Jun 2022 *

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