Siemens 6SR41 series - Figure 3-4 Waveforms for Phase B; Figure 3-5 Waveforms for Line-To-Line Voltage

Theory
3.2 The Power Circuitry
Product User Manual
38 Operating Instructions, Version AE 12/2009, A5E01454341C
5%
/
5
%
/
5
%
/
5
%
%1
Figure 3-4 Waveforms for Phase B
Figure " Waveforms for Phase B" shows the same signals for Phase B. The 3 carriers are
identical to Figure " Waveforms for Phase A", except each is shifted by 20 degrees from its
Phase A equivalent (see following note). The reference RB is also identical to Figure "
Waveforms for Phase A", except that it is delayed by 120 degrees (at the reference
frequency).
The sum of the output voltages from cells B1, B2 and B3 produces the B-to-neutral output
voltage of the drive, shown in Figure " Waveforms for Phase B" as BN.
Figure " Waveforms for for Line-to-Line Voltage" repeats the two line-to-neutral voltages AN
and BN. The numerical difference between AN and BN forms the line-to-line voltage
impressed on the motor, and is shown in Figure " Waveforms for for Line-to-Line Voltage" as
AB.
$1
%1
$%
Figure 3-5 Waveforms for Line-to-Line Voltage