Analysis of PV Array System with Buck-Boost Converter Using Perturb & Observe Method

Abstract: In this paper utilization of a buck-boost converter for control of photovoltaic power using Maximum Power Point Tracking (MPPT) control mechanism is presented. First the photovoltaic module is analyzed using MATLAB. For the main aim of the project is the buck -boost converter is to be used along with a Maximum Power Point Tracking control mechanism. The MPPT is responsible for extracting the maximum possible power from the photovoltaic and feed it to the load via the buck boost converter which steps up the voltage to required magnitude. The main aim will be to track the maximum power point of the photovoltaic module so that the maximum possible power can be extracted from the photovoltaic. The algorithms utilized for MPPT are generalized PO algorithms and are easy to model or use as a code. The algorithms are written in m files of MATLAB and utilized in simulation. Both the buck boost converter and the solar cell are modelled using Sim Power System blocks.

Keywords: MPPT, PV Array, Perturb and Observe (PO), Solar Energy, Buck Boost Converter.