Page 71 - Hybrid-Renewable Energy Systems in Microgrids

Integrated renewable energy sources with droop control techniques-based microgrid operation 55

Figure 3.13 Grid voltage and grid current.

could be satisfied. The V/f control mode is also provided at this grid connected opera-
tion. Fig. 3.13 shows the AC grid voltage and grid current is obtained within limits.
Fig. 3.14 clearly represents that the DC microgrid voltage is constant.
Fig. 3.15 represents the point of common coupling voltage (PCC), which might
be viewed that voltage is quickly regulated at 1 p.u, when the control is started.
Fig. 3.16 shows that the PV voltage and current flows through the system. The
output voltage is 100 V and the current is 10.5 A in the overall grid connected sys-
tem. Figs. 3.17 and 3.18 show the output power of the solar PV generator and the
converter voltage.

Figure 3.14 DC voltage across the grid.