The WECS based Doubly Fed Induction Generator (DFIG) system is presented in this paper which includes different MPPT control strategies for a grid connected system. The GSC gives the flow of power from the rotor part of DFIG up to the grid and the modulation of DC voltage. Here the cuckoo search algorithm based on MPPT is designed, to obtain a higher power from the changing speed wind turbine. The algorithms such as Perturb and Observe (P&O), Proportional Integral (PI) control and Fuzzy Logic Controller (FLC) are compared and their performances are evaluated. To design and develop the cuckoo search optimization based on MPPT for WECS, and to obtain optimum voltage regulation and power, thus improving the working performance, reducing the domain time and minimizing the performance indices. To simulate the different MPPT control methods, MATLAB/Simulink environment is used here.

We propose a Maximum Power Point Tracking (MPPT) algorithm for grid linked to Doubly Fed Induction Generator (DFIG) for wind energy conversion systems. This Doubly-Fed Induction Generator (DFIG) is widely used in the upgrading market of Wind Energy Conversion System (WECS). It has the stator and rotor part, the stator part is linked directly on grid and its rotor part is linked on the back to back converter and (RL) filter respectively. RSC is responsible for the flow of power from stator part of DFIG to the grid. The Grid Side Converter (GSC) is responsible for assurance of controlling the DC voltage to specific value and to control the power flow initiates from rotor part of Doubly-Fed Induction Generator till the grid by altering the current filters. In this current paper, a latest intelligent higher power point tracker called crow search optimization for wind energy conversion system is used. The simulations are done in the software called MATALB/SIMULINK.