With the high penetration of renewable energy

new challenges

such as power fluctuation suppression and inertial support capability

have arisen in the power sector. Battery energy storage systems play an essential role in renewable energy integration. In this paper

a distributed virtual synchronous generator (VSG) control method for a battery energy storage system (BESS) with a cascaded H-bridge converter in a grid-connected mode is proposed. The VSG is developed without communication dependence

and state-of-charge (SOC) balancing control is achieved using the distributed average algorithm. Owing to the low varying speed of SOC

the bandwidth of the distributed communication networks is extremely slow

which decreases the cost. Therefore

the proposed method can simultaneously provide inertial support and accurate SOC balancing. The stability is also proved using root locus analysis. Finally

simulations under different conditions are carried out to verify the effectiveness of the proposed method.