Optimization Runs - Siemens SINAMICS DCM Compact User Manual

4.3.3

Optimization runs

The optimization runs should only be carried out on the master converter. The slave
converters must be connected and ready for operation at this point.
The optimization run for the armature current closed-loop control (p50051 = 25) sets the
following parameters on the master converter:
Table 4- 4 For 12-pulse series connection of SINAMICS DCM converters
Parameter
p50110 Armature resistance Ra Actual armature resistance × half the number
p50111 Armature inductance
La
p51591 La reduction factor
p50155 Kp armature current
controller
p50156 Tn armature current
controller
The parameter values from the above table must be transferred manually from the master
converter 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.
Table 4- 5 For 12-pulse series connection of SINAMICS DCM converters with an uncontrolled rectifier
Parameter
p50110 Armature resistance Ra Actual armature resistance × number of paral-
p50111 Armature inductance
La
p51591 La reduction factor
p50155 Kp armature current
controller
p50156 Tn armature current
controller
The parameter values from the above table must be transferred manually from the master
converter to the parallel slave converters.
The additional optimization runs are then carried out, starting with the optimization run for the
speed control at the master converter.
12-pulse applications
Compact User Manual, 09/2015, A5E34871844H
Master
of SINAMICS DCMs
Actual armature inductance × half the number
of SINAMICS DCMs
-
-
-
Master
lel units
Actual armature inductance × number of con-
verters in parallel
-
-
-
12-pulse series connection
4.3 Commissioning
Slave or parallel devices
The same as on the master
The same as on the master
The same as on the master
The same as on the master
The same as on the master
Parallel units
The same as on the master
The same as on the master
The same as on the master
The same as on the master
The same as on the master
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