Controlled current

Current equal to the input signal.

  • signal
  • electrical
  • Modelica Standard Library
  • 3 ports
BlockControlled currentKindsignalCurrentLibraryElectrical

Description

An ideal current source whose current equals its input signal.

Example

Electrical sources Every voltage and current source driving a resistor, each with a voltmeter across it.

DC 12 VLoad A 12 Ωv AGround ADC 1 ALoad B 10 Ωv BGround BSine 10 VLoad C 10 Ωv CGround CSine 1 ALoad D 10 Ωv DGround DRamp 10 VLoad E 10 Ωv EGround EPulse 5 VLoad F 10 Ωv FGround F3 sin(2π·50t)Signal voltageLoad G 10 Ωv GGround G0.5Signal currentLoad H 10 Ωv HGround H
In Gradara, select a Controlled current block and press F1, then choose Open example. It opens as a new model in My models, ready to run.

Also in this example:DC voltageVoltage sensorConstantGroundSine waveResistorAC voltageAC currentDC currentRamp voltagePulse voltageControlled voltage

Ports

Inputs 1

  • isignal · A

    Commanded current p.i, in amperes.

Conserving terminals 2

  • +pelectrical

    Positive pin. The commanded current flows into p, through the source, and out of n.

  • −nelectrical

    Negative pin.

Equations

Modelica
p.i = i
p.i + n.i = 0

Implementation

Modelica Standard Library 4.1.0Modelica.Electrical.Analog.Sources.SignalCurrent
MSL documentation

Assumptions and limitations

  • No voltage limit: the source produces whatever voltage the load requires.

Tips

  • A positive input pushes current out of n into the circuit.

Used in

These larger examples use it too. Open them from Examples in the app.

  • Data center cooling control
  • EV drivetrain

See also

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