Systems and methods for adaptive dispatch and DC balancing in battery energy storage systems

Abstract

An energy storage system includes a plurality of energy storage nodes. Each energy storage node includes a battery storage element and a control subsystem for receiving battery data from the battery storage element. The energy storage system further includes a power conversion system (PCS) and a control system coupled to the energy storage nodes and configured to receive or store a required energy flow. The control subsystem, the control system, or both are configured to determine the state of charge of one or more energy storage nodes based on the battery data.The control system is configured to deploy the required power flow through the plurality of energy storage nodes based on a DC link balancing algorithm that is activated in response to the state of load exceeding a high SOC threshold or falling below a low SOC threshold.