WOLFRAM SYSTEMMODELER

RampedRheostat

Rheostat with linearly decreasing resistance

Diagram

Wolfram Language

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SystemModel["Modelica.Electrical.Machines.Utilities.RampedRheostat"]
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Information

This information is part of the Modelica Standard Library maintained by the Modelica Association.

Ramped rheostat, used for starting asynchronous induction motors with slipring rotor:

The external rotor resistance RStart is reduced to zero, starting at time tStart with a linear ramp tRamp.

Parameters (3)

RStart

Value:

Type: Resistance (Ω)

Description: Starting resistance

tStart

Value:

Type: Time (s)

Description: Time instance of reducing the rheostat

tRamp

Value:

Type: Time (s)

Description: Duration of ramp

Connectors (2)

plug_p

Type: PositivePlug

Description: To positive rotor plug

plug_n

Type: NegativePlug

Description: To negative rotor plug

Components (4)

star

Type: Star

ground

Type: Ground

rheostat

Type: VariableResistor

ramp

Type: Ramp[m]