DefinePK

Abstract

Hybrid renewable energy systems are more reliable and economical compared to the stand-alone system which is powered by only one source. An off-grid PV-wind hybrid system is considered in this work, where the reactive power requirement of the wind-driven induction generator (IG) is met only by the battery banks when there is insufficient solar output from the PV Panels. In this work for such a design, to provide effective storage capacity, Zinc bromide battery and their parameters are scrutinized and compared with the conventional lead-acid battery. Based on the analysis and comparison the most appropriate battery type is chosen. The Storage efficiency of the batteries has been computed under two situations. In the first case the battery banks supplies both active and reactive power when there is inadequateness in solar and wind power. In the next case, battery banks supplies only reactive power for the induction generator during the unavailability of solar output from PV modules. Storage equipment analysis for different conditions, aids in selecting the most optimal battery type for the hybrid unit.