Siemens SINAMICS DCM Manual page 572

The following diagram shows the topology of a 12-pulse parallel connection, where an
additional 6-pulse converter is connected in parallel to each of the two 12-pulse converters
connected in parallel.
Figure 10-81 12-pulse parallel connection (2), block diagram
Note
If additional converters are connected in parallel to the master converter, then exactly the
same number of converters must also be connected in parallel with the slave converter.
SINAMICS DCM DC Converter
Operating Instructions, 02.2015, A5E34763375/RS-AA/001
10.27 Connecting units in parallel and in series
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Descriptions of functions
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