3-phase resistor

Resistor in each phase.

  • 3-phase
  • Modelica Standard Library
  • 2 ports
  • 1 parameter
Block3-phase resistorKindthreePhaseResistorLibrary3-phase

Description

Three independent linear resistors, one in each phase between plug_p and plug_n.

Example

Three-phase loads A 10 V three-phase supply into a resistive star load, a series R–L star load, and a capacitor bank in delta.

10 V 50 HzStar supplyGround supplyStar (R)Ground (R)Star (R–L)Ground (R–L)PowerCurrents (R)R 10 ΩR 10 Ω (R–L)Currents (R–L)L 31.8 mHCurrents (C)C 100 µFDeltaPhase aPhase bPhase cv av bv cGround aGround bGround c
In Gradara, select a 3-phase resistor block and press F1, then choose Open example. It opens as a new model in My models, ready to run.

Also in this example:Voltage sensorGround3-phase AC source3-phase inductor3-phase capacitorStar pointDelta connectionPhase a tapPhase b tapPhase c tap3-phase current sensor3-phase power sensor

Ports

Conserving terminals 2

  • +plug_p3-phase

    Three-phase plug (phases a, b, c). Current into plug_p is counted as positive.

  • −plug_n3-phase

    Three-phase plug (phases a, b, c).

Parameters

  • Resistance per phaseR10 Ω

    ≥ 0

    Resistance of each phase, in ohms. Positive.

Equations

Modelica
vk = R · ik for k = a, b, c, with vk = plug_p.k.v − plug_n.k.v

Implementation

Modelica Standard Library 4.1.0Modelica.Electrical.Polyphase.Basic.Resistor
MSL documentation

Assumptions and limitations

  • Same value in every phase. No temperature dependence.

Tips

  • For a wye load, connect plug_n to a Star point; for a delta load, connect it through a Delta connection.

See also

Select a block in Gradara and press F1 to open its page offline.