Optimized Photovoltaic System using Power Electronics Devices

Abstract

This thesis deals with efficient and optimized photovoltaic system newlineusing power electronics devices. The research work in the thesis is based on newlineoptimization of photovoltaic module using maximum power point tracking newlinealgorithms (MPPT) for controlling the duty cycle of CUK converter to obtain newlinemaximum power points (MPPs) of PV module. According to maximum power newlinetransfer theorem, the maximum power can be transferred or extracted from the newlinemaximum output power (Theoretical power) of PV module only when the load newlineresistance is equal to optimal resistance (Ropt =Vmp/Imp) of PV module. In other newlinewords, the impedance of load matches with the operating condition of the PV newlinemodule; in general, this operating point is seldom at the PV module s MPP, newlinethus it is not producing the maximum power. In the starting, it provides newlinetheoretical studies of photovoltaic cell and modeling techniques using newlineequivalent electric circuit. The simulation is done in the MATLAB to find out newlinethe V-I, P-V, and P-I curves of PV module. newlineThe three different maximum power point tracking (MPPT) newlinealgorithms: Perturb and Observe (PandO), Increment resistance, and decrement newlineResistance are discussed in detail. MATLAB simulations perform comparative newlinetests of above three MPPT algorithms using actual irradiance data. newline