WOLFRAM SYSTEM MODELER

Dimmer_R

Dimmer with resistive load

Diagram

Wolfram Language

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SystemModel["Modelica.Electrical.PowerConverters.Examples.ACAC.Dimmer_R"]
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Information

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

This model demonstrates the behaviour of a dimmer with phase-angle control with resistive load.

The reference voltage is prescribed by a trapezoid between zero and full voltage. The voltageToAngle block calculates the necessary phase angle, which is processed by the Signal2mPulse adaptor, applying the firing signals to the triac.

Parameters (7)

f

Value: 50

Type: Frequency (Hz)

Description: Source frequency

Vrms

Value: 110

Type: Voltage (V)

Description: RMS source voltage

S

Value: 1000

Type: ApparentPower (V⋅A)

Description: Load apparent power

powerFactor

Value: 1

Type: Real

Description: Load power factor

ZLoad

Value: Vrms ^ 2 / S

Type: Impedance (Ω)

Description: Load impedance

RLoad

Value: ZLoad * powerFactor

Type: Resistance (Ω)

Description: Load resistance

LLoad

Value: ZLoad * sqrt(1 - powerFactor ^ 2) / (2 * pi * f)

Type: Inductance (H)

Description: Load inductance

Components (14)

sineVoltage

Type: SineVoltage

Description: Sine voltage source

ground

Type: Ground

Description: Ground node

triac

Type: SinglePhaseTriac

Description: Triode for alternating current

voltageSensor

Type: VoltageSensor

Description: Sensor to measure the voltage between two pins

adaptor

Type: Signal2mPulse

Description: Generic control of 2*m pulse rectifiers

multiSensor

Type: MultiSensor

Description: Sensor to measure current, voltage and power

voltageToAngle

Type: VoltageToAngle

Description: Reference voltage to firing angle converter

trapezoid

Type: Trapezoid

Description: Generate trapezoidal signal of type Real

meanPower

Type: Mean

Description: Calculate mean over period 1/f

vRMS

Type: RootMeanSquare

Description: Calculate root mean square over period 1/f

vH01

Type: Harmonic

Description: Calculate harmonic over period 1/f

iRMS

Type: RootMeanSquare

Description: Calculate root mean square over period 1/f

iH01

Type: Harmonic

Description: Calculate harmonic over period 1/f

loadResistor

Type: Resistor

Description: Ideal linear electrical resistor