The DC grid connected to the AC grid via an Active Front End (AFE)
The Solar panel and the AFE generate a three phase AC grid which is used for powering a three-phase induction machine. The remaining power is from the AC grid. In this way two AC grids a re coupled via a DC grid.
A single phase inverter creates a single phase AC grid. The Solar panel and single phase AFE Power Factor Controller (PFC) feed into that single phase AC grid which is used for powering three light bulbs. A second solar panel is used to feed into the DC grid.
The two solar panels are feeding into the three-phase AC grid.
DC grid, Solar panel, Battery storage with droop control and two variable loads are simulated for two days. The green trace shows the
The State of Charge of the battery duringth e two days
Fluctuation of the DC grid voltage around 350 Volt.
Load profiles:
