Wind Power Control Using MPPT and SEPIC Converter

Abstract

A wind energy system is simulated by MATLAB/SIMULINK software. In which a SEPIC (DC/DC converter) converter is used to convert the varingDC voltage a constant output voltage by using its control mechanism.The amount of power output from a Wind Energy System (WES) depends upon the accuracy with which the peak power points are tracked by the maximum power point tracking (MPPT) controller of the WES control system irrespective of the type of generator used. Incremental conductance (InCond) method has been used as the algorithm in this MPPT block. The simulated system proposed uses a three-level, three phase, twelve pulse inverter for converting DC voltage generated by the SEPIC converter to AC voltage at desired frequency and voltage level. The usage of three-level inverter reduces Total Harmonic Distortion (THD) in output voltage. When large power generated from wind energy system then it will be stored in Battery, this stored energy will be used by load when system is shut-down or in unrealiable conditions. Lead-acid batteries are used due to their large availability in many sizes, low cost and well firm performance characteristics. The main concentration here is to develop a system to make use of the available renewable resourcei.eWES effectively and increase the efficiency of system by implementing MPPT technique.