Siemens SINAMICS DCM Compact User Manual

12-pulse parallel connection
3.3 Commissioning
12-pulse applications
26 Compact User Manual, 09/2015, A5E34871844H
3.3.4.2
Optimization for an interphase transformer
When an interphase transformer is being used, in spite of the 12-pulse connection, we
recommend that the optimization run is carried out for
6-pulse operation
.
To do this, p51800 should be set = 0 at the master before starting the optimization run. The
optimization run determines a total inductance from the armature filter inductance and cable
inductance. When the filter inductance is known, this can be subtracted from the value
determined in p50111.
p50111
new
= p50111
determined
- L
filter
If several devices are connected in parallel, then the determined values must be set
corresponding to Table (* half the number of SINAMICS DCM). The current control values
must be manually checked.
Parameter
Master
Slave or parallel units
p50110 Armature resistance Ra Actual armature resistance × half the
number of SINAMICS DCMs
The same as at the
master
p50111 Armature inductance La Actual armature inductance × half the
number of SINAMICS DCMs
The same as at the
master
p51591 La reduction factor - The same as at the
master
p51596 Filter resistance Rs Actual filter resistance × half the num-
ber of SINAMICS DCMs
The same as at the
master
p51594 Filter inductance Ls Actual filter inductance × half the
number of SINAMICS DCMs
The same as at the
master
p51595 Ls reduction factor - The same as at the
master
p50155 Kp armature current
controller
- The same as at the
master
p50156 Tn armature current
controller
- The same as at the
master
In the table above, the parameter values of the master converter must be manually
transferred to the slave converter. The additional optimization runs are then carried out,
starting with the optimization run for the speed control at the master converter.

Siemens SINAMICS DCM Specifications

General

Brand	Siemens
Model	SINAMICS DCM
Category	Media Converter
Language	English