A novel power management strategy for single phase storage-equipped grid-connected PV generation system

This paper focuses on the energy management strategy of a single-phase grid-connected PV generation system. An energy control target is brought up and an energy control strategy based on the DC bus voltage is also raised to realize the target. The strategy is based on an improvement of DC droop concepts. Communication system is avoided by this strategy. Each part operates only with locally measured signals and the bus voltage, making the whole system highly reliable and plug-and-play viable. Both PV and Battery work condition is considered in the strategy. Experimental results validates the feasibility and stability of the proposed approach.