WOLFRAM SYSTEM MODELER
HBridge_DC_DriveH bridge DC/DC converter with DC drive |
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Diagram
Wolfram Language
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SystemModel["Modelica.Electrical.PowerConverters.Examples.DCDC.HBridge.HBridge_DC_Drive"]
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Information
This information is part of the Modelica Standard Library maintained by the Modelica Association.
This example of an H bridge with DC drive demonstrates the operation of the DC machine in four quadrants.
The DC output voltage is equal to 2 * (dutyCycle - 0.5) times the input voltage.
| start time (s) | machine speed | machine torque | mode |
|---|---|---|---|
| 0 | zero | zero | |
| 3 | positive | zero | |
| 6 | positive | positive | motor |
| 9.5 | positive | negative | generator |
| 12.5 | negative | negative | motor |
| 15.5 | negative | positive | generator |
| 19 | negative | zero | |
| 22 | zero | zero |
Plot machine current dcpm.ia, averaged current meanCurrent.y, machine speed dcpm.wMechanical, averaged machine speed dcpm.va and torque dcpm.tauElectrical.
Parameters (6)
| f |
Value: 1000 Type: Frequency (Hz) Description: Switching frequency |
|---|---|
| Ld |
Value: 3 * dcpmData.La Type: Inductance (H) Description: Smoothing inductance |
| tauNominal |
Value: dcpmData.ViNominal * dcpmData.IaNominal / dcpmData.wNominal Type: Torque (N⋅m) Description: Nominal torque |
| dMin |
Value: 0.2 Type: Real Description: Minimum duty cycle |
| dMax |
Value: 1 - dMin Type: Real Description: Maximum duty cycle |
| dcpmData |
Value: Type: DcPermanentMagnetData Description: Data record of PM excited DC machine |
Components (14)
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hbridge |
Type: HBridge Description: H bridge (four quadrant converter) |
|---|---|---|
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constantVoltage |
Type: ConstantVoltage Description: Source for constant voltage |
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signalPWM |
Type: SignalPWM Description: Generates a pulse width modulated (PWM) boolean fire signal |
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ground |
Type: Ground Description: Ground node |
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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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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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dcpm |
Type: DC_PermanentMagnet Description: Permanent magnet DC machine |
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dcpmData |
Type: DcPermanentMagnetData Description: Data record of PM excited DC machine |
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torque |
Type: Torque Description: Input signal acting as external torque on a flange |
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torqueTable |
Type: TimeTable Description: Generate a (possibly discontinuous) signal by linear interpolation in a table |
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dutyCycleTable |
Type: TimeTable Description: Generate a (possibly discontinuous) signal by linear interpolation in a table |
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inductor |
Type: Inductor Description: Ideal linear electrical inductor |