Numerical Analysis and Optimization on Shunt Losses in a Multi-Stack VRFB System

Relative to conventional self-contained battery technologies, there are many advantages for VRFB using on large, utility-scale bulk energy storage application. During design the large scale VRFB system, the reduction of shunt current has always been focused on. The paper explored a stacks string model based on MultiSim™ software package to analyze and optimize shunt loss. Numerical analysis and optimization result express that the extra pipe resistance breaks the straight-line manifold voltage distribution, the degree of voltage redistribution depends on the resistance of stack feed piping, and shunt geometry optimization ranges are often limited by constrains and considerations.