Abstract
<jats:p>A new control strategy for grid connected doubly fed induction generator(DFIG)-based wind energy conversion system(WECS) is presented in this paper. Control strategies for grid side and rotor side converters placed in rotor circuit of DFIG are presented along with the mathematical modelling of the employed configuration of WECS. These topology includes a battery energy storage system(BESS) to reduce the power fluctuations on the grid due to varying nature and unpredictability of wind. Existing control strategies like the maximum power point extraction of wind turbine, unity power factor operation of the DFIG are also addressed along with proposed strategy of grid power leveling. An analysis is made in terms of active power sharing between the DFIG and the grid taking into account the power stored or discharged by the BESS, depending on the available wind energy. The proposed strategy is developed by using Mat Lab/Simulink and is used to predict the behaviour of system.</jats:p>