The grid parame-
ters are calculated using the current injection the two adjacent frequencies and 58
Hz. this case, the power auxiliary winding earthed directly the coil.3
0.
0 100 150 200 250
-1
-0.67 0.4
0.Page 190 Commissioning current injection
We take care it.6
41.34724
50.50000
58.6
-0.1
0.
13.00 0.6
0.8
1
I
/
A
t ms
0 100 150 200 250
0
0.4
0.8
-0.3 Current injection options with and without Hz
component
LP
I CI
U1
Une
L2
L1
Figure 123: Simplified current injection diagram with three frequencies
The next figure shows the progression the injected current for the activation displayed in
Figure 123. Based the size the grid, the injected current may too small calculate the pa-
rameters correctly.5
0.
Figure 124: Example for the pulse pattern for injection with component
Figure 125: Frequency spectrum for injection with component
The main disadvantage injecting with component the injection current that
the biggest part this current Hz.4
-0.2
0.33 0.2
0
0. This clearly visible Figure 125.2
0.29383
I
/
A
f Hz
