Development of Scaled Simulator for Designing Power Storage System

Some of the authors have developed a battery charger and discharger with an arbitrary current waveform, and the results have been presented at UPEC 2017. In this paper, the system has improved, and a scaled simulator for designing the power storage system is developed using the feature of the arbitrary current charging/discharging. The system enables to simulate a storage system for any power plant with a load such as a wind power generation, and a photovoltaic power generation. In addition, the system can model a battery charger with a pulse current method for prolonging the battery life for the electric vehicle. The characteristics of the storage system can be investigated using a real battery such as lithium ion, nickel hydride and lead acid batteries for comparative experiments. The system simulates the storage systems taking into consideration the battery chemical reaction that is difficult to include in conventional numerical simulations. In addition, the battery characteristics are easily tested by the proposed simulator. As a result, the practical simulation of future power-storage systems is realized. The low-cost and small-sized simulator can be used for designing not only power storage systems but also into consumer apparatuses.