Control of Second-Life Hybrid Battery Energy Storage System Based on Modular Boost-Multilevel Buck Converter

摘要: To fully utilize second-life batteries on the grid system, a hybrid battery scheme needs to be considered for several reasons: uncertainty over using single source supply chain batteries, differences in evolving chemistry and configuration by different suppliers strive greater power levels, of degradation within battery. Therefore, these systems could have widely module voltage, capacity, initial state charge health. In order suitably integrate control suitable multimodular converter topology an associated structure are required. This paper addresses issues proposing modular boost-multilevel buck based grid-tie inverter. Thereafter, module-based distributed architecture is introduced independently each according its characteristics. The proposed found flexible enough inverter dc link. Modeling, analysis, experimental validation performed single-phase energy storage system prototype understand operation strategy with configurations.