Energy Management of a Dual Hybrid Energy Storage System of PV Microgrids in Grid-connected Mode Based on Adaptive PQ Control

In PV microgrids, batteries are used to balance the power between the generation and loads side. In this paper, a Dual Hybrid Energy Storage System (DHESS) in microgrids is proposed to increase batteries life cycle. the DHESS can work on two modes, one is responsible for charging, and another for discharging. The working mode changing is decided by the state of charging (SOC) of each battery. An adaptive PQ control method in the three-phase inverter is presented to ensure the SOC in the safe range. The proposed system is developed in MATLAB/SIMULINK environment and tested for the results in different conditions.

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