Fast Simulation of Circuits With Recursive Elements: Application to a BESS

Some (very) large circuits have the peculiar feature of being composed of numerous repetitions of sub-circuits identical in terms of topology and components. If a traditional simulation paradigm is adopted, such a structure poses a high computational burden. In this paper we describe a general approach based on isomorphism that greatly improves simulation efficiency by exploiting the repetitive structure of these sub-circuits. After describing the core aspects of the approach, we show its potentiality by simulating a battery energy storage system (BESS) at battery cell level in different conditions.