WOLFRAM SYSTEM MODELER
SoftStartControl |
SystemModel["Modelica.Electrical.PowerConverters.ACAC.Control.SoftStartControl"]
This information is part of the Modelica Standard Library maintained by the Modelica Association.
This block models the functionality of a soft starter controller, controlling the output vRef
in the range [0,1] with respect to nominal voltage.
Boolean input start = true
causes the output vRef
to be risen according to a ramp: vRef = vStart + (1 - vStart)*(time - t0)/tRampUp
.
In case the current exceeds the specified maximum current iMax
during the starting ramp, the ramp is stopped.
When the current falls below the lower threshold of current control iMin < iMax
, the ramp is continued.
Note: It is recommended to filter the measured current, e.g. using Modelica.Blocks.Continuous.Filter
Boolean input start = false
causes the output vRef
to be lowered according to a ramp: vRef = -(time - t0)/tRampDown
.
tRampUp |
Value: Type: Time (s) Description: Start ramp duration |
---|---|
vStart |
Value: 0 Type: Real Description: Start voltage / nominal voltage |
iMax |
Value: Type: Real Description: Maximum current / nominal current |
iMin |
Value: 0.9 * iMax Type: Real Description: Lower threshold of current control |
INominal |
Value: Type: Current (A) Description: Nominal current |
tRampDown |
Value: Type: Time (s) Description: Stop ramp duration |
iRMS |
Type: RealInput Description: Measured RMS current |
|
---|---|---|
vRef |
Type: RealOutput Description: Reference voltage |
|
start |
Type: BooleanInput Description: 'input Boolean' as connector |