Operating characteristics of the 30kW electric energy storage system by used of tubular-type VRLA battery with granular silica

摘要

In this study, we developed the 30kW electric energy storage system by used of tubular-type VRLA batteries with granular silica, which was stacked compactly and placed them sideways on cabinet. The system connected three units composed of batteries and a power converter in parallel. We were able to increase in a power of the storage system with ease. The system efficiency is 70%over and the battery efficiency is 85%over.