Environmental Engineering Reference
In-Depth Information
0
0
−2
−2
−4
−4
0
0.01
0.02
0.03
0.04
0.05
0.06
0
0.01
0.02
0.03
0.04
0.05
0.06
Time [s]
Time [s]
(a) Three-phase currents
and
of the inverter to generate the neutral current
4
4
i C
i L
i N
i C
i L
i N
2
2
0
0
−2
−2
−4
−4
0
0.01
0.02
0.03
0.04
0.05
0.06
0
0.01
0.02
0.03
0.04
0.05
0.06
Time [s]
Time [s]
(b) Neutral current
, capacitor current
and inductor current
1
1
V ave
V ave
0.5
0.5
0
0
−0.5
−0.5
−1
−1
0
0.01
0.02
0.03
0.04
0.05
0.06
0
0.01
0.02
0.03
0.04
0.05
0.06
Time [s]
Time [s]
(c) Neutral point shift
Figure 13.8 Steady-state responses when a balanced resistive load was connected to the three-phase
inverter ( I N =
1 A): with the controller C 1 (left column) and with the controller C 3 (right column)
4
4
i R
i S
i T
i R
i S
i T
2
2
0
0
−2
−2
−4
−4
0
0.01
0.02
0.03
0.04
0.05
0.06
0
0.01
0.02
0.03
0.04
0.05
0.06
Time [s]
Time [s]
(a) Three-phase currents
and
of the inverter to generate the neutral current
4
4
i C
i L
i N
i C
i L
i N
2
2
0
0
−2
−2
−4
−4
0
0.01
0.02
0.03
0.04
0.05
0.06
0
0.01
0.02
0.03
0.04
0.05
0.06
Time [s]
Time [s]
(b) Neutral current
, capacitor current
and inductor current
1
1
V ave
V ave
0.5
0.5
0
0
−0.5
−0.5
−1
−1
0
0.01
0.02
0.03
0.04
0.05
0.06
0
0.01
0.02
0.03
0.04
0.05
0.06
Time [s]
Time [s]
(c) Neutral point shift
Figure 13.9 Steady-state responses when a balanced resistive load was connected to the three-phase
inverter ( I N =
2 A): with the controller C 1 (left column) and with the controller C 3 (right column)
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