Coordinated Power Control for Distributed Hybrid Energy Storage in DC PV Power Collection System

In this paper, a novel double-objective coordinated power control strategy has been proposed for the multi-group distributed hybrid energy storage systems (DHESS) in series-connected DC PV power collection system. With the new coordinated power control strategy, the elimination of internal mismatched power and the optimization of station-level output power could be achieved independently at the same time. The control strategy could be realized with a four-module logic configuration in digital processors. The background scenario, basic principles, functional characteristics and implementations of the new control strategy have been presented clearly while the system simulations have been performed for validation.