RampedRheostat

Rheostat with linearly decreasing resistance

Diagram

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]