FPGA based 2-stage power conditioning system for PV power generation

Abstract

Presently most of the countries are looking towards the renewable energy systems like solar PV systems to overcome the drawbacks of conventional energy systems. This paper mainly deals with the power conditioning system controlled with FPGA for solar PV fed systems. A power conditioning system is proposed here for PV System comprising of 2 stage power conversion using FPGA. The first stage converts the variable DC voltage obtained from solar PV module/array into fixed DC using Boost converter which operates in voltage mode control technique. In the second stage of power conversion, the output of the first stage is fed to 3-phase, 3-level Diode clamped Inverter and the same is controlled by level shifted Sinusoidal pulse width modulation technique to convert fixed DC into 3 phase AC to drive 3 phase AC loads effectively.