Siemens SINAMICS DCM - Configuration; Power Increase with Parallel Connection

12-pulse series connection
4.2 Configuration
12-pulse applications
30 Compact User Manual, 09/2015, A5E34871844H
4.2
Configuration
4.2.1
Power increase with parallel connection
Additional devices can be connected in parallel to the SINAMICS DCM 12-pulse series
master device and the 12-pulse series slave device to increase the output current.
The maximum possible configuration is 2 groups in series, each consisting of 3 devices
connected in parallel.
Suggested circuit:
1) Transformer
2) Overvoltage protection
3) Insulation monitoring
4) SINAMICS DCM master
5) SINAMICS DCM slave
6) DC motor
7) Line reactor
8) Parallel interface
9) Symmetry resistor
U
N
= rated voltage of the line supply connected at the converter input
I
d
= direct current of a partial converter (½ total direct current)
Figure 4-4 Connection of additional SINAMICS DCM devices in 6-pulse operation