A brief survey on different multilevel inverter topologies for grid-tied solar photo voltaic system

Abstract

As days go, renewable energy resources getting lot of consideration due to the growing demand of energy. In view of all the renewable energy resources, solar energy is very prominent because sunlight is obtainable all over the year. This research work concentrates on performance and reliability enhancement of grid-connected Solar Photo Voltaic (SPV) power conversion system with a prominent implementation of progressive power electronics technology in the view of catering the major requirements of the grid-tied SPV inverter such as reliability, improved efficiency and cost of the system. As of now some types of inverter has been used for grid connected PV system that each of them containing some good results and drawbacks. In PV power conversion applications, some parameters such as switching frequency, Total Harmonic Distortion, leakage current and common mode voltage and current overflow are dominant. These parameters affect the major objectives of PV system that are reliability, efficiency and cost. This proposed work is to achieve the high reliability and improved efficiency of grid-tied multilevel inverter for the PV system using proposed Cascaded H-bridge multilevel inverter with less complexity.