WOLFRAM SYSTEM MODELER

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 induction motors with slipring rotor:

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

Parameters (4)

m

Value: 3

Type: Integer

Description: Number of phases

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

Description: Star-connection

ground

Type: Ground

Description: Ground node

rheostat

Type: VariableResistor

Description: Ideal linear electrical resistors with variable resistance

ramp

Type: Ramp[m]

Description: Generate ramp signal