WOLFRAM SYSTEM MODELER
ChopperStepDown_RStep down chopper with resistive load |
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Diagram
Wolfram Language
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SystemModel["Modelica.Electrical.PowerConverters.Examples.DCDC.ChopperStepDown.ChopperStepDown_R"]
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Information
This information is part of the Modelica Standard Library maintained by the Modelica Association.
This example demonstrates the switching on of a resistive load operated by a step down chopper.
DC output voltage is equal to dutyCycle times the input voltage.
Plot current currentSensor.i, averaged current meanCurrent.y, total voltage voltageSensor.v and voltage meanVoltage.v.
Parameters (8)
| f |
Value: 1000 Type: Frequency (Hz) Description: Switching frequency |
|---|---|
| Vsource |
Value: 60 Type: Voltage (V) Description: Source voltage |
| L |
Value: 25e-3 Type: Inductance (H) Description: Source inductance |
| C |
Value: 20e-6 Type: Capacitance (F) Description: Smoothing capacitance |
| dutyCycle |
Value: 0.20 Type: Real Description: Duty cycle |
| ILoad |
Value: 1.2 Type: Current (A) Description: Load current |
| RLoad |
Value: V0 / ILoad Type: Resistance (Ω) Description: Load resistance |
| V0 |
Value: Vsource * dutyCycle Type: Voltage (V) Description: No-load output voltage |
Components (13)
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constantVoltage |
Type: ConstantVoltage Description: Source for constant voltage |
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chopperStepDown |
Type: ChopperStepDown Description: Step down chopper |
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currentSensor |
Type: CurrentSensor Description: Sensor to measure the current in a branch |
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voltageSensor |
Type: VoltageSensor Description: Sensor to measure the voltage between two pins |
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ground |
Type: Ground Description: Ground node |
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signalPWM |
Type: SignalPWM Description: Generates a pulse width modulated (PWM) boolean fire signal |
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meanCurrent |
Type: Mean Description: Calculate mean over period 1/f |
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meanVoltage |
Type: Mean Description: Calculate mean over period 1/f |
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inductor |
Type: Inductor Description: Ideal linear electrical inductor |
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capacitor |
Type: Capacitor Description: Ideal linear electrical capacitor |
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loadResistor |
Type: Resistor Description: Ideal linear electrical resistor |
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adaptor |
Type: Voltage2DutyCycle Description: Linearly transforms voltage to duty cycle |
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vRef |
Type: Ramp Description: Generate ramp signal |