A Novel, Scalable, Low-Cost and High-Efficiency Battery Storage System Topology

Abstract

Battery Storage Systems are increasingly deployed in the grid for commercial applications and ancillary grid services. Current state-of-the-art systems suffer from several drawbacks regarding safety, efficiency, and costs. This paper presents a novel approach that avoids major challenges for the production, installation, and operation of battery storage systems. Based on modular power electronics the central inverter is omitted and each battery module acts according to grid voltage and power requirements. This leads to the flexibly adjustable m-Bee system with the highest efficiency and failsafety. This new topology also increases the usable battery capacity compared to state-of-the-art systems.

The Efficiency and Profitability of the Modular Multilevel Battery for Frequency Containment Reserve

“…Its functionality is based on the concept of cascaded H-bridge converters. Previous work describes the functionality of the M2B in detail [6,7]. This work calculates the efficiency based on a semiconductor-level simulation model.…”