Power Quality Analysis of a Grid-connected Solar/Wind/Hydrogen Energy Hybrid Generation System

Abstract

A grid connected hybrid generation system (HGS) consisting of wind energy conversion System (WECS)/Photo voltaic (PV) System/solid oxide fuel cell (SOFC) is designed and simulated by using Matlab/Simulink. SOFC is the replacement of battery, attached to produce the clean energy when these renewable energy sources are unable to produce required amount of electric power. A controller is used to regulate the flow of H₂ through the valveto the SOFC and the rest amount of H₂ is stored in storage tank. Also, an operational control strategy (OCS) is developed to utilize maximum amount of power of PV to the required load and rest amount of power is coming from wind to fulfill the load demand. Hence, the electrolyzer is supplied by the wind power to convert the water in to H₂ and oxygen. Also the power quality factor (PQF) analysis is exercised to measure the quality of power transmission.