Title: Sensorless control and diagnosis of synchronous generator used in wind energy conversion system under inter turn short-circuit fault

Authors: Samir Bouslimani; Saïd Drid; Larbi Chrifi-Alaoui

Addresses: Mostafa Benboulaid, LSPIE Laboratory, University of Batna 2, Rue Chahid Med El-Hadi Boukhlof, Batna 05000, Algeria ' Mostafa Benboulaid, LSPIE Laboratory, University of Batna 2, Rue Chahid Med El-Hadi Boukhlof, Batna 05000, Algeria ' Laboratory of Innovative Technologies (LTI, EA 3899), University of Picardie Jules Verne, Institute of Technology of the Aisne, IUT, 13 Av. François Mitterrand, Cuffies, France

Abstract: This paper deals with control and diagnosis of the synchronous generator (SG) used in a wind energy conversion system under inter turn short-circuit fault. In the first part of this paper, a speed sensorless control of the synchronous generator is presented. In this case speed estimation is carried out using model reference adaptive system (MRAS). In the second part, the MRAS observer is associated with the Luenberger observer in order to estimate the stator resistances according d and q axis. The stability of the system is proved by using Lyapunov theory. Finally, the proposed new hybrid observer MRAS-Luenberger is used to detect the turn-to-turn short circuit faults. The Park's vector approach (PVA) is adopted to take decision if there are faults. The proposed technique is tested on dSPACE DS1103 and the results confirm the efficacy to detect the fault by observing the shape. This method gives us the right information for the fault isolation.

Keywords: synchronous generator; condition monitoring; inter-turn short-circuit; park vector approach; PVA; fault diagnosis; wind power.

DOI: 10.1504/IJPEC.2019.102980

International Journal of Power and Energy Conversion, 2019 Vol.10 No.4, pp.480 - 496

Received: 14 Mar 2017
Accepted: 30 Oct 2017
Published online: 14 Oct 2019 *

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