WOLFRAM SYSTEM MODELER

# Rectifier

Rectifier example

# Wolfram Language

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`SystemModel["Modelica.Electrical.QuasiStatic.SinglePhase.Examples.Rectifier"]`
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# Information

This information is part of the Modelica Standard Library maintained by the Modelica Association.

This example demonstrates coupling a quasi-static circuit with a DC circuit. The QS voltage is rectified (using an ideal AC DC converter), loaded by a variable load conductor. The conversionFactor = DC voltage / AC rms voltage in this case is the root mean square of a rectified sine, i.e., 1. You may compare the quasi-static results with that of a fully transient model (using a Graetz rectifier), plotting:

• QS: AC rms current = iQS.len
• AC: AC instantaneous current = iAC.u
• AC: AC rms current = iAC.y_rms
• QS: DC current = iDC1.i
• AC: DC instantaneous current = iDC2.u
• AC: DC rms current = iDC2.y

It can be seen that at the DC side the current is represented by its averaged value, at the AC side by its rms value.

#### Note

The quasi-static model needs a grounding at the QS side as well as the DC side, whereas the transient model may have only one ground since AC side and DC side are connected via the diodes.

# Parameters (2)

VAC Value: 100 Type: Voltage (V) Description: AC rms voltage Value: 1 Type: Real Description: Ratio of DC voltage / AC rms voltage

# Outputs (2)

Itr Default Value: iAC.y_rms Type: Current (A) Description: Transient current Default Value: iQS.len Type: Current (A) Description: QS current

# Components (19)

voltageQS Type: VoltageSource Description: Constant AC voltage Type: Resistor Description: Single-phase linear resistor Type: CurrentSensor Description: Current sensor Type: ComplexToPolar Description: Converts complex to polar representation Type: Ground Description: Electrical ground Type: IdealACDCConverter Description: Ideal AC DC converter Type: Ground Description: Ground node Type: CurrentSensor Description: Sensor to measure the current in a branch Type: VariableConductor Description: Ideal linear electrical conductor with variable conductance Type: SineVoltage Description: Sine voltage source Type: Resistor Description: Ideal linear electrical resistor Type: CurrentSensor Description: Sensor to measure the current in a branch Type: Harmonic Description: Calculate harmonic over period 1/f Type: Ground Description: Ground node Type: GraetzRectifier Description: Graetz rectifier bridge Type: CurrentSensor Description: Sensor to measure the current in a branch Type: RootMeanSquare Description: Calculate root mean square over period 1/f Type: VariableConductor Description: Ideal linear electrical conductor with variable conductance Type: Ramp Description: Generate ramp signal