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400
5 0
0
0
-400
-50
0. 1
0.1
0. 1 5
0.15
0. 2
0.2
0. 2 5
0.25
0. 3
0.3
0. 3 5
0.35
0. 4
0.4
0. 4 5
0.45
0. 5
0.5
0. 5 5
0.55
0 . 6
0.6
30
0
-30
0. 1
0. 1 5
0. 2
0. 2 5
0. 3
0.35
0. 4
0.45
0. 5
0. 5 5
0 . 6
40
0
-40
0. 1
0. 1 5
0. 2
0. 2 5
0. 3
0.35
0. 4
0.45
0. 5
0. 5 5
0 . 6
40
0
-40
0. 1
0. 1 5
0. 2
0. 2 5
0. 3
0.35
0. 4
0.45
0. 5
0. 5 5
0 . 6
4000
2000
0
0. 1
0. 1 5
0. 2
0. 2 5
0. 3
0.35
0. 4
0.45
0. 5
0. 5 5
0 . 6
4000
2000
0
0.1
0.15
0.2
0.25
0.3
0.35
0.4
0.45
0.5
0.55
0.6
t / s
Fig. 11. The simulation results of PV array connected to the grid
The proposed control schemes in figure 4 was then applied to physical setup for the
grid-connected mode, and figure 12 shows the experimental results when the PV was
connected to the grid. It can be seen that the output current and the output voltage of
converter has the same phase and the unit power factor has been achieved.
Time (sec)
Fig. 12. The experimental results in grid-connected mode
5
Conclusions
This paper has investigated a physical configuration and performance of a microgrid
integrated with PV panels, variable loads, battery energy storage systems and AC line
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