DefinePK

Abstract

Solar energy is anticipated to become the world’s largest source of electricity and hence an effective design of Solar Energy Conversion System (SECS) that converts solar energy to electricity is mandatory. In huge rating power plants, converter with high voltage handling capability is required. In this work three level Input Series Output Series (ISOS) modular full bridge DC-DC converter has been proposed for Solar Energy Conversion System to meet high input voltage and high output voltage requirements. The Input Series Output Series (ISOS) connected modular DC-DC converter system enables the use of switches with lower voltage ratings for applications that demand high input and output voltage. As the input of the modular converter is varying with respect to irradiation variation, three loop control (TLC) is proposed in this work. The main objective of this work is obtain equal sharing of input and output voltages among the converters and to control input current and the output voltage to a desired constant value for a wide range of irradiance and load variations.