Siemens SINAMICS DCM Operating Instructions Manual page 425

Setting the armature current controller adaptation
With the armature current controller, it is possible to calculate the adaptation using p50570
from the actual value or from the setpoint of the armature current. The adaptation to non-
linear inductances can be activated using p50571, the discontinuous-continuous current
adaptation can be activated using p50572. The adaptation factor can be limited using
p50573. In order to be able to incorporate the adaptation at the armature current controller,
connector output r52350 must be interconnected to connector input p50175 (Kp adaptation).
With this intervention, the armature current controller gain is increased or decreased
depending on the armature current actual value and/or setpoint (this is selected using
p50570). The calculations of the adaptations are now created to change the gain.
Setting the field current controller adaptation
For the field current controller, it is possible to calculate the adaptation from the actual value
or from the setpoint of the field current using p50575. The adaptation to non-linear
inductances can be activated using p50576; the adaptation to the non-linearity of the gating
unit, can be activated using p50577. The adaptation factor can be limited using p50578. In
order to be able to incorporate the adaptation at the field current controller, connector output
r52355 must be interconnected to connector input p50267 (Kp adaptation). With this
intervention, the field current controller gain can be increased or decreased depending on
the field current actual value and/or setpoint (this is selected using p50570). The calculations
of the adaptations are only set-up to change the gain.
The corresponding function diagrams show additional details regarding how to activate the
gain adaptation and the various setting options:
FP 6853
FP 6855
FP 6908
SINAMICS DCM DC Converter
Operating Instructions, 1.2012, C98130-A7066-A1-05-7619
10.12 Adaptation of the armature and field current controller
Calculating the adaptation factor for the armature current controller gain
Intervention to adapt the armature current controller gain
(p50175 = r52350 establishes the intervention)
Calculating the adaptation factor for the armature current controller gain
intervention to adapt the armature current controller gain
(p50267 = r52355 establishes the intervention)
Descriptions of functions
423