OBSERVATION OF SOLAR PHOTOVOLTAIC ENERGY HARVESTING SYSTEM
Abstract
All over the world, the growth in electric power demand has slowed down and dropped to 0.7% per year [1]. Capacity addition to the grid has kept up with the demand, but the sources of generation have varied over decades. This has given renewable energy sources a tremendous growth potential, and recent capacity additions have come mainly from natural gas and renewable. Among renewable, solar and wind power provide most of the growth [1]. The steady and rapid growth in solar photovoltaic installation across the world has been driven by many factors including renewable portfolio standards, decreasing costs of installations and incentives[1]–[3]. The increasing capacity addition of solar PV and installation of larger power stations has led to research and development in high-power converter topologies for PV applications. In this paper presenting the different observations of solar PV system and also observed the characteristics of voltage and current or voltage and power for different solar radiation and temperature respectively. In second observation we observed and analysis the performance of PV module in series or parallel connection with respect to I-V and V-Pcharacteristics. In third observation, studied the effect of shading on module output power. In fourth and fifth observation, to overcome the problem in shading module in output power by using the DC-to-DC converter and also observed the MPP by varying the duty cycle of converter. In sixth and seventh case, to observed the performance of SEPIC converter in open and closed loop system respectively and to overcome the problem of boost and Buck converter
