Abstract: Energy is the considered to be the pivotal input for development. At present owing to the depletion of available conventional resources and concern regarding environmental destruction, the renewable sources are being utilized to meet the ever increasing energy demand. From the available alternative sources of energy, wind energy is considered to be one of the potential sources of clean energy. But the nature of wind flow is stochastic. Thus, the study of WECS with the associated controllers is becoming more and more significant with each passing day. Nowadays, many stand-alone loads are powered by renewable source of energy. In this project, a hybrid wind - battery system is considered to meet the demand of a stand- alone system. The mechanical safety of the WECS is assured by means of MPPT based pitch control technique and a the battery is controlled by a charge controller based on battery state of charge is developed to ensure controlled charging and discharging of battery Both the control schemes are integrated and the efficacy is validated by testing it with various wind profiles in MATLAB/SIMULNIK.

Keywords: Wind energy conversion systems(WECS),Wind turbine(WT),Self excited induction generator(SEIG),Maximum power point tracking(MPPT),Lead acid battery(LAB),state of charge(SOC),Constant voltage(CV),Constant current(CC).