Voltage Harmonics; Line Current Harmonics - ABB ACS 600 User Manual

Chapter 2 – Operation Basics

Voltage Harmonics

Line Current Harmonics

2-4
A typical spectrum of the voltage harmonics at the output of the
transformer is shown below. Each harmonic is presented as a
percentage of the fundamental voltage. n denotes the order of the
harmonic.
7
6
5
4
3
2
1
0
THD 11 21 31 41 51
A typical spectrum of the line current harmonics is shown below. Each
harmonic is presented as a percentage of the fundamental current. n
denotes the order of the harmonic.
4
3.5
3
2.5
2
1.5
1
0.5
0
THD 11 21 31 41 51
61 71 81 91 101 111
61 71 81 91 101 111
121 131 141 151 161 171
121 131 141 151 161 171
ACA 635 IGBT Supply Sections
n
181 191
n
181 191