Simulation Analysis and Performance Analysis of the Modern Converters for Solar Photovoltaic power system

Abstract

Introduction: Photovoltaic cell is one of the most energizing green energy sources to generate the electricity by implementing it as solar polar plant. Photovoltaic cells is considered as alternate and sustainable energy source as demand to electricity is increasing periodically and clean resource to generation of electricity is very limited. Especially photovoltaic cell changes the energy market dynamically as their output determined on environmental situations. Hence it becomes necessary to conserve the electricity for reliable and safe operation of the existing power system using power electronics converters with maximum power point tracking functions. Photovoltaic sources are considered as clean energy, it is highly significant to evaluate the suitable grid system to various types of the photovoltaic technologies. Due to changing environmental operating conditions such as temperature, irradiance, effects of partial shading and humidity, stability and generation of Photovoltaic cells will be affected largely. Meanwhile, it adversely affects the stability of the grid systems. In this article, detailed performance and simulation analysis of the various types of grid connected system to multiple types of converter to photovoltaic cell towards power generation has been analyzed. Typically Photovoltaic cell generates the DC voltage which is fed into the DC micro grid system as it is modern trend due to loads using DC voltage.  Further analysis helps to identify the suitable converter design to photovoltaic cell on basis of significance and challenges of power generation mechanism. Multiple types of converter design are monitored and necessary environmental data was recorded and electricity distributed to various types of grid connected system is also measured.  Based on the analysis, the converter topologies to photovoltaic cell such as sepic converter, scott ternary solar multilevel converter, Flyback converter, zeta converter and multiport converter are used to transmit the generated power to various types of micro grid connected system such as off grid system, on grid system, DC connected grid system and hybrid connected grid system under static and dynamic characteristics has analyzed in detail. Power Converter belongs to two main categories such as high step converters as parallel optimizer to PV module level applications and buck boost converter as series optimizer to PV string applications. Among those sepic converter proves to be outperforming on compared with other types of converter system on the simulation using matlab Simulink software.