DFIG Based Wind Energy System with Integrated Active Filter Capabilities

Mr Ravi, P. Venkatesh, D. RAMESH


The main of this project is operation of doubly fed induction generator (DFIG) with an integrated active filter capabilities using grid-side converter (GSC). In this proposed DFIG, the reactive power for the induction machine has been supplied from the RSC and the load reactive power has been supplied from the GSC. The decoupled control of both active and reactive powers has been achieved by RSC control. The proposed DFIG has also been verified at wind turbine stalling condition for compensating harmonics and reactive power of local loads. The main contribution of this work lies in the control of GSC for supplying harmonics in addition to its slip power transfer. The rotor-side converter (RSC) is used for attaining maximum power extraction and to supply required reactive power to DFIG. This wind energy conversion system (WECS) works as a static compensator (STATCOM) for supplying harmonics even when the wind turbine is in shutdown condition. Control algorithms of both GSC and RSC are presented in detail.The proposed DFIG-based WECS is simulated using MATLAB/Simulink. 

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