Title: An improved control of grid integrated doubly fed induction generator

Authors: Youssef Errami; Abdellatif Obbadi; Smail Sahnoun

Addresses: Laboratory of Electronics, Instrumentation and Energy, Team of Exploitation and Processing of Renewable Energy, Department of Physics, Faculty of Science, University Chouaib Doukkali, El Jadida, Morocco ' Laboratory of Electronics, Instrumentation and Energy, Team of Exploitation and Processing of Renewable Energy, Department of Physics, Faculty of Science, University Chouaib Doukkali, El Jadida, Morocco ' Laboratory of Electronics, Instrumentation and Energy, Team of Exploitation and Processing of Renewable Energy, Department of Physics, Faculty of Science, University Chouaib Doukkali, El Jadida, Morocco

Abstract: This study proposes a vector control approach (VCA) for a doubly fed induction generator (DFIG)-based wind energy conversion system (WECS) connected to the grid. Regarding the configuration of the system, the stator of the induction machine is connected directly to the power grid and the rotor is connected to the power grid via a back-to-back converter. The control schemes are presented, including the rotor side converter (RSC) control, grid side converter (GSC) converter and the pitch angle control. The RSC is used to implement maximum power point tracking (MPPT). The GSC regulates reactive and real power flow to the power network. Besides, it regulates the DC bus voltage and the AC side power-factor. The controller system's abilities are tested via simulations performed with MATLAB/Simulink. A complete simulation model is developed for the control of the active and reactive powers of the DFIG under varying wind conditions and system responses of open loop control are compared with those of closed loop control for different grid voltage conditions.

Keywords: wind power system; doubly fed induction generator; DFIG; maximum power point tracking; MPPT; VC; electric network connection.

DOI: 10.1504/IJPEC.2021.116577

International Journal of Power and Energy Conversion, 2021 Vol.12 No.3, pp.219 - 235

Received: 14 Sep 2019
Accepted: 21 Aug 2020

Published online: 09 Jun 2021 *

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