A Novel Modular, Reconfigurable Battery Energy Storage System Design

In this paper, a new modular, reconfigurable battery energy storage system is presented. The presented structure integrates power electronic converters with a switch-based reconfigurable array to build a smart battery energy storage system (SBESS). The proposed design can dynamically reconfigure the connection between the battery modules to connect a module in series/parallel or bypass a faulty module. The reconfigurability along with the use of the converters will bring a few important advantages, including better safety, robust power supply despite faults, variable voltage or power output, flexible individual control of battery modules, and balanced use of batteries. Further, the modular design allows to scale up to construct large-size SBESS. This work also elaborates the operation principles for the proposed SBESS design and illustrates its effectiveness through simulation study.