An Improved Performance Variable Speed Wind Turbine Driving a Doubly Fed Induction Generator Using Sliding Mode Strategy
Hamid Chojaa, Aziz Derouich, Mohammed Taoussi, Othmane Zamzoum, Ahmed Hanafi
Abstract
This paper presents the modeling and the control of the Double-Fed Induction Generator (DFIG) for 10 KW DFIG application incorporated into a Wind Energy Conversion System (WECS). The objective is to design and compare two separate strategies for independently controlling the active and the reactive power generated by a DFIG, in order to conclude on their performances. The PI controller and the sliding mode strategy with a maximum power point tracking (MPPT) used during the energy conversion to extract the maximum of the power. The simulations results show significant improvements in the performances of the proposed sliding mode control (SMC) over the Proportional-Integral controller (PIC), in terms of the dynamic response, static error, Set-point tracking, precision, THD of the Stator Current, and robustness against parametrical variations. The performance of the systems was tested and compared with Matlab/Simulink Software.