3-phase voltage sensor

Phase voltages between plug + and plug −.

  • signal
  • 3-phase
  • Modelica Standard Library
  • 5 ports
Block3-phase voltage sensorKindthreePhaseVoltageSensorLibrary3-phase

Description

Measures the three voltages between corresponding phases of plug_p and plug_n. It draws no current.

For phase-to-neutral voltages, connect plug_n to a Star point tied to the neutral.

Example

Three-phase transformer A Dy1 transformer with ratio 2 steps 100 V phase voltage down into a star-connected load.

100 V 50 HzStar supplyGround supplyStar loadGround loadDy1 transformerGround (neutral)Load 50 ΩOutput voltages
In Gradara, select a 3-phase voltage sensor block and press F1, then choose Open example. It opens as a new model in My models, ready to run.

Also in this example:Ground3-phase AC source3-phase resistorStar point3-phase transformer (Dy)

Ports

Outputs 3

  • vasignal · V

    plug_p.a.v − plug_n.a.v, in volts.

  • vbsignal · V

    plug_p.b.v − plug_n.b.v, in volts.

  • vcsignal · V

    plug_p.c.v − plug_n.c.v, in volts.

Conserving terminals 2

  • +plug_p3-phase

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

  • −plug_n3-phase

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

Equations

Modelica
vk = plug_p.k.v − plug_n.k.v for k = a, b, c
plug_p.k.i = plug_n.k.i = 0

Implementation

Modelica Standard Library 4.1.0Modelica.Electrical.Polyphase.Sensors.VoltageSensor
MSL documentation

See also

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