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Description of parameters
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For example, if drooping is 3.00% and active current is 50%, the DC voltage reference is
reduced by 1.5%. With drooping, paralleled units can be balanced by adjusting the
DCVoltReference to slightly different values.
Power [%]
Reference
100 %
DC
Voltage
Actual
3 %
Figure 12.
2.2.3.2
DC Voltage Ramp Rate ID1199
This parameter defines the ramp rate for the DC voltage reference change. The rate is
defined as %/s.
By default the internal DC voltage reference is kept the same as the actual DC voltage
when the drive is in STOP state, or the operation mode is Island or Micro Grid. This is to
make the change to the AFE mode smoother when the change is done on the fly.
Input Ref.
DC Reference
120 %
110 %
Internal Ref
5 % / s
2 s
Figure 13.
2.2.3.3
DC Voltage Reference Filter TC
ID1760
By default the internal DC voltage reference is kept the same as the actual DC voltage
when the drive is in STOP state, or the operation mode is Island or Micro Grid. This is to
make the change to the AFE mode smoother when the change is done on the fly.
This will prevent over current and current spikes when the control mode is changed.