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Power Harmonic Filters 83
20
10
Amps 0
−10
−20
0.0 0.2 0.4 0.6 0.8 1.0
Time (seconds)
100%
90%
80% I THD = 37.7%
70% = 117.6 A
I RMS
60% I Fund = 110.1 A
50%
40%
30%
20%
10%
0%
1 3 5 7 9 11 13 15 17 19 21 23 25
Harmonic number
(b)
Figure 6.9 (Continued)
C C C C1
L L R L R
C2
R R
(a) (b) (c) (d)
(a) Single-tuned filter
(b) First order high-pass filter
(c) Second order high-pass filter
(d) Third order high-pass filter
Figure 6.10 Shunt filters [6.5].
[© 1985, IEEE, reprinted with permission]
