Modelling and analysis of transient state during improved coupling procedure with the grid for DFIG based wind turbine generator
Commande de Machines Electriques et Réseaux de Puissance (CMERP), National Engineering School of Sfax, University of Sfax, Sfax, Tunisia
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Accepted: 4 October 2017
Published online: 9 November 2017
The aim of this study is to enhance DFIG based Wind Energy Conversion Systems (WECS) dynamics during grid coupling. In this paper, a system modelling and a starting/coupling procedure for this generator to the grid are proposed. The proposed non-linear system is a variable structure system (VSS) and has two different states, before and after coupling. So, two different state models are given to the system to analyse transient stability during the coupling. The given model represents well the transient state of the machine, through which, a behaviour assessment of the generator before, during and after connection is given based on simulation results. For this, a 300 kW DFIG based wind generation system model was simulated on the Matlab/SIMULINK environment. We judge the proposed procedure to be practical, smooth and stability improved.
© Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature, 2017