13.10 Calculation Formula
203
10
13
Chapter 13 Specifications
Current zero-phase component Izero [A]
The fundamental RMS current (phase current) from harmonic calculations is used for I1, I2, and I3.
At the zero-phase, seq2=0, seq3=0
=I1 phase angle, =I2 phase angle, =I3 phase angle
Current positive-phase component Ipos [A]
The fundamental RMS current (phase current) from harmonic calculations is used for I1, I2, and I3.
At the positive-phase, seq2=120, seq3=240
=I1 phase angle, =I2 phase angle, =I3 phase angle
Current negative-phase component Ineg [A]
The fundamental RMS current (phase current) from harmonic calculations is used for I1, I2, and I3.
At the negative-phase, seq2=240, seq3=120
=I1 phase angle, =I2 phase angle, =I3 phase angle
Izero
1
3
-- -
I1 cos I2 seq2+cos I3 seq3+cos++
2
I1 sin I2 seq2+sin I3 seq3+sin++
2
+
=
Ipos
1
3
-- -
I1 cos I2 seq2+cos I3 seq3+cos++
2
I1 sin I2 seq2+sin I3 seq3+sin++
2
+
=
Ineg
1
3
-- -
I1 cos I2 seq2+cos I3 seq3+cos++
2
I1 sin I2 seq2+sin I3 seq3+sin++
2
+
=