WOLFRAM SYSTEM MODELER
Dimmer_RLDimmer with resistive-inductive load |
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Diagram
Wolfram Language
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SystemModel["Modelica.Electrical.PowerConverters.Examples.ACAC.Dimmer_RL"]
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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-inductive load. Note that due to the inductance the current is not zero at the points in time wehre zero-crossing of the voltage occurs, and the triac stays conducting until the current becomes zero.
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: 0.87 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 (15)
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sineVoltage |
Type: SineVoltage Description: Sine voltage source |
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ground |
Type: Ground Description: Ground node |
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triac |
Type: SinglePhaseTriac Description: Triode for alternating current |
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voltageSensor |
Type: VoltageSensor Description: Sensor to measure the voltage between two pins |
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adaptor |
Type: Signal2mPulse Description: Generic control of 2*m pulse rectifiers |
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multiSensor |
Type: MultiSensor Description: Sensor to measure current, voltage and power |
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voltageToAngle |
Type: VoltageToAngle Description: Reference voltage to firing angle converter |
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trapezoid |
Type: Trapezoid Description: Generate trapezoidal signal of type Real |
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meanPower |
Type: Mean Description: Calculate mean over period 1/f |
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vRMS |
Type: RootMeanSquare Description: Calculate root mean square over period 1/f |
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vH01 |
Type: Harmonic Description: Calculate harmonic over period 1/f |
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iRMS |
Type: RootMeanSquare Description: Calculate root mean square over period 1/f |
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iH01 |
Type: Harmonic Description: Calculate harmonic over period 1/f |
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loadResistor |
Type: Resistor Description: Ideal linear electrical resistor |
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loadInductor |
Type: Inductor Description: Ideal linear electrical inductor |