Installation and Connection
3-14 | CFW-11M G2
3
3.2.1.4 Harmonics of the 6-Pulse Rectifier
show the typical values of the
harmonic content of the currents, Power Factor (PF) and THD (I) on the power supply, considering the 6-pulse
rectifier.
Table 3.6:
Individual harmonics, Power Factor and THD (I) typical for rated load in the output, 6-pulse rectifier
Harmonic
Order
I (%)
FP
THD(I)
1
100.0 %
0,89
42 %
5
38.7 %
7
14.1 %
11
6.7 %
13
3.3 %
17
2.9 %
19
1.9 %
23
1.4 %
Nor
ma
liz
ed
Ha
rm
on
ic
A
mpl
itud
e
40 %
35 %
25 %
15 %
5 %
30 %
20 %
10 %
0 %
0 %
20 %
40 %
60 %
Load percentage
5th Harmonic
7th Harmonic
11th Harmonic
13th Harmonic
17th Harmonic
19th Harmonic
23th Harmonic
80 %
100 %
120 %
Note:
Amplitude of the normalized harmonics as a function of the fundamental with 100 % of load. 6-pulse rectifier.
Figure 3.16:
Typical values of the harmonics of the input current with variation of the output power
Nor
ma
liz
ed
H
ar
m
on
ic
A
mpl
itud
e
Load percentage
5th Harmonic
7th Harmonic
11th Harmonic
13th Harmonic
17th Harmonic
19th Harmonic
23th Harmonic
0 %
0,0 %
0,5 %
1,0 %
1,5 %
2,0 %
2,5 %
3,0 %
20 %
40 %
60 %
80 %
100 %
120 %
Figure 3.17:
Power Factor (FP) and THD(I) with variation of the output power 6-pulse rectifier