Comparative Analysis of Different Multilevel ...

Comparative Analysis of Different Multilevel Converter Topologies for Battery Management System

Author Name : Deepa Kumari, Shiv Kumar Tripathi

ABSTRACT

Energy storage devices such as rechargeable batteries play a significant role in domestic, transportation, and industrial applications. The development of new battery technologies featuring high power and energy densities along with the strict safety, reliability, and lifetime requirements of the applications have brought the need for Battery Management Systems (BMSs).The integration of Battery Energy Storage Systems (BESS) into the power grids has been proposed as an effective solution for mitigating voltage and frequency instability problems arising from the integration of renewable resources with intermittent patterns. One of the most important applications of BESS is to restore an electric power system to operation without counting on the external transmission network. To prevent potential damage to the expensive equipment of power plant, the converters must generate a high quality and reliable three phase voltage.Multilevel converters are the state-of-the-art power conversion systems for Medium Voltage (MV) high power applications.This research provides a simulation-based investigation in order to scrutinize different multi-level inverter topologies to find the more appropriate multi-level inverter structure for BESS application. The investigation has been done entitled of quantitative and qualitative studies. Throughout the quantitative study, the output specifications of each inverter topology is scrutinized, while other features such as reliability, modularity and functionality are scrutinized as qualitative study. All topologies are simulated in MATLAB/Simulink at the same operating conditions.

Key Words- Multilevel Converters (MC), Battery Energy Storage Systems (BESS,  High Voltage Direct Current (HVDC),  transmission systems,Power quality.