DESIGN AND DEVELOPMENT OF GRID INTEGRATED PV SYSTEM WITH ENHANCED POWER QUALITY

Abstract

Electricity is a utility, all kind of industries, commercial buildings, households, agriculture etc. require electricity to function efficiently, thus electrical energy important to every country for its development and growth. Thermal power plants based on coal and other fossil fuels have been the major source of electrical energy for the whole world till date. However due to limited availability of fossil fuels and emission of greenhouse gases it is necessary to regulate the use of fossil fuels and develop renewable energy resources which are sustainable and environment friendly. Renewable energy sources like wind and solar have become standard electrical energy sources these days and there is a lot of research work going in field of renewable energy to further improve their efficiency and feasibility. In recent years, the power generation through photovoltaic (PV) systems have grown rapidly all over the world. The grid connected PV system have become popular across the globe and are a great aspect to cater major portion of electrical energy demand in future. Grid connected PV systems have capability to transfer solar energy into the grid and also improve power quality at point of common coupling. In the present work “DESIGN AND DEVELOPMENT OF GRID INTEGRATED PV SYSTEM WITH ENHANCED POWER QUALITY”, the electrical modelling of PV cell, conventional MPPT techniques and two-stage grid connected PV system are studied. The equivalent electrical model of a photovoltaic cell is studied to understand the PV characteristics and its dependence on solar irradiance and temperature. Design and application of boost converter for MPPT in PV system is discussed. MATLAB SIMULINK model for MPPT in PV system using boost converter is developed and simulation results are presented for dynamic solar irradiance, temperature and load conditions. A hardware model for MPPT in PV system using boost converter is also developed and results are obtained for different solar irradiance, temperature and load conditions.