Abstract:

Solar energy sources can only provide power throughout the day and with specific ratings depending on the PV (photovoltaic) series capacity and radiation level. They should be used at the maximum level possible. But sometimes the produced peak power is greater than the load demand, which leads to the storage of the remaining energy in the network using network-connected inverters or using a storage device such as a battery storage system. In this study, a micro-DC network connected to the storage system and a PV series with a capacity of 10 kw were simulated. In the PV series, a P&O maximum power point tracking algorithm is used to track the maximum power point. The reviewed DC micro network includes AC and DC loads. The recommended system is simulated for all expected working conditions. The simulation is done using the MATLAB/Simulink program. The simulation results show that in all simulated cases, the PV series provides the maximum power and the load sharing is dependent on the power produced from the PV series and the energy stored in the battery system. The priority is to provide the necessary electricity from the charging PV series and then the batteries, and if there is more demand, the electric network will provide it.

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