Environmental Engineering Reference
In-Depth Information
24
24
E
1
E
2
E
1
E
2
20
20
16
16
12
12
8
8
4
4
0
0
0
1
2
3
4
5
6
7
8
9
10
11
12
0
1
2
3
4
5
6
7
8
9
10
11
12
Time [s]
Time [s]
(a) Voltage set-point
24
24
P
1
P
2
P
1
P
2
20
20
16
16
12
12
8
8
4
4
0
0
−4
−4
0
1
2
3
4
5
6
7
8
9
10
11
12
0
1
2
3
4
5
6
7
8
9
10
11
12
Time [s]
Time [s]
(b) Real power
2
2
1
Q
1
Q
2
1
Q
1
Q
2
0
0
−1
−1
−2
−2
−3
−3
−4
−4
−5
−5
−6
−6
0
1
2
3
4
5
6
7
8
9
10
11
12
0
1
2
3
4
5
6
7
8
9
10
11
12
Time [s]
Time [s]
(c) Reactive power
32
32
28
28
24
24
20
20
16
16
12
12
8
8
4
4
0
0
0
1
2
3
4
5
6
7
8
9
10
11
12
0
1
2
3
4
5
6
7
8
9
10
11
12
Time [s]
Time [s]
(d) THD of the output voltage
24
24
16
16
8
8
0
0
−8
−8
−16
−16
−24
−24
7
7.01
7.02
7.03
7.04
7.05
7.06
7
7.01
7.02
7.03
7.04
7.05
7.06
Time [s]
Time [s]
(e) Output voltage in the steady state
3
3
i
1
i
2
i
1
i
2
Circulating current
Circulating current
2
2
1
1
0
0
−1
−1
−2
−2
−3
−3
7
7.01
7.02
7.03
7.04
7.05
7.06
7
7.01
7.02
7.03
7.04
7.05
7.06
Time [s]
Time [s]
(f) Currents in the steady state
Figure 19.11
Experimental results with a non-linear load: with the robust droop controller (left column)
and with the conventional droop controller (right column)
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