Advanced Systems Integration of 540 KVA Inverter and 1.86 MWh Battery Energy Storage System for Microgrid Application: A Case Study

Abstract

This paper discusses the realization of advanced systems integration that has 540 KVA three-phase bidirectional inverter and 1863.68 kWh lithium-ion battery energy storage system (BESS) at Florida Solar Energy Center (FSEC) with a partnership of University of Central Florida (UCF) and A.F. Mensah Inc. The purpose of this paper is to give a case study and an overview of advanced systems integration by providing their test results. It enables the reader to understand what a microgrid is in a real application. After explaining the overview of the system, the real energy consumption, the reduced energy consumption, the battery testing data, the voltage, and current waveforms are demonstrated and analyzed by determining its total harmonic distortion (THD) values and simulating its results in different power management scenarios. The system is now utilized at FSEC without the PV Panels integration. The PV integrated system scenario is explained by providing theoretical and simulation results. As a result, the BESS capacity should be "4 hour" times of the PV panel power, and the THD level is determined 0.07 when 200-kW power is sent to the grid by using high current transforms.