AC voltage

Sinusoidal voltage: offset + V·sin(2πf·t + phase).

  • electrical
  • Modelica Standard Library
  • 2 ports
  • 4 parameters
BlockAC voltageKindsineVoltageLibraryElectrical

Description

An ideal sinusoidal voltage source with amplitude, frequency, phase, and DC offset. Use it for AC mains and test signals.

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 AC voltage 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 currentDC currentRamp voltagePulse voltageControlled voltageControlled current

Ports

Conserving terminals 2

  • +pelectrical

    Positive terminal.

  • −nelectrical

    Negative terminal.

Parameters

  • AmplitudeV325 V

    Peak amplitude, in volts. The default 325 V is the peak of 230 V RMS.

  • Frequencyf50 Hz

    ≥ 0

    Frequency, in Hz. 0 or more.

  • Phasephase0 rad

    Phase at time 0, in radians.

  • Offsetoffset0 V

    DC offset, in volts.

Equations

Modelica
p.v − n.v = offset + V · sin(2π · f · time + phase)
p.i + n.i = 0

Implementation

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

Assumptions and limitations

  • No internal impedance. The wave starts at time 0; there is no start time.

Tips

  • V is the peak value: for a given RMS voltage, set V = √2 · V_rms.

See also

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