Techniques for measuring battery system state of power

Abstract

A state of power (SOP) measurement technique includes determining an initial power command corresponding to a potential SOP of a battery system and performing an iterative power command searching process including charging the battery system to a fully-charged state of charge (SOC), discharging the battery system to a set of SOC breakpoints until the battery system reaches a fully-discharged SOC, after reaching each SOC breakpoint, applying a power command as a constant power pulse to the battery system, the power command being the initial power command or a subsequently updated power command, and based on whether a current or voltage of the battery system exceeds an error tolerance, updating the initial power command and repeating the iterative power command searching process, or outputting the initial power command or the subsequently updated power command as a measured SOP of the battery system.

Junran Chen

Assistant Professor

My research interests include Battery modeling, state estimation, aging, management, and applications of artificial intelligence in energy storage system.