Mitigation of Power Fluctuations of a Grid-Tied Wind Energy System Using Battery Storage System

Wind energy is a clean, renewable and reliable source of energy. The demand for renewable energy is increasing because of its positive impact on the environment and assistance to the economy of countries. However, the output of wind turbines is unpredictable and characterized by variations due to changing weather conditions. This paper presents a simple voltage-current (V-I) controller based power smoothening of the grid-tied wind energy conversion system (WECS) using the battery energy storage system (BESS). Considerable reduction in power fluctuation is achieved with a simple control technique. The dynamic modelling and simulation study is accomplished in MATLAB/Simulink.