Operation Analysis for Seamless Charge and Discharge Control of High Efficiency Grid-Connected Bi-directional Power Conversion System for Storage Battery Systems with Bi-directional Switch Circuit Topology

Abstract

In recent years, various storage battery systems, such as home battery system, V2H/V2G system, and UPS system, have spread rapidly all over the world. We propose a new power conversion system for use in the previously-stated storage battery systems. This paper describes operation analysis of this system for bi-directional power conversion with fundamental grid-interconnection. Good output follow-up controllability characteristics of the proposed system are shown through computer simulation results.