A Simplified Design and Modeling of Boost Converter for Photovoltaic System

Abstract

The photovoltaic standalone system is becoming increasingly important, particularly for rural applications such as PV water pumping, solar lighting, and battery charging. Due to environmental concerns and the depletion of fossil fuels, there is a growing shift toward renewable energy sources. This paper presents the design of a basic boost converter circuit in MATLAB/Simulink with a constant DC source voltage. Additionally, a comparative analysis is conducted between a converter directly connected to a PV system and one integrated with an MPPT tracking technique. The Perturb and Observe (P&O) algorithm is implemented to generate the required duty pulse, ensuring the system operates at the maximum power point. When the boost converter is connected to the PV system without MPPT, it operates at a point other than the maximum power point, leading to reduced output voltage. However, with MPPT, the proposed system demonstrates improved performance.