Signal PWM
Generate a pulse-width modulated (PWM) boolean fire signal
Description
Connections
Parameters
Modelica Standard Library
The Signal PWM component generates a pulse-width modulated (PWM) boolean signal. It can be used both for DC/DC and AC/DC converters. The signal input of the PWM controller is the duty cycle; the duty cycle is the ratio of the on-time to the switching-period. The output firing signal is strictly determined by the actual duty cycle, indicated as d in the following figure.
The firing signal is generated by comparing the sampled duty cycle input with a periodic saw-tooth signal.
To see an example model that uses this component, search for ChopperStepDown in the MapleSim search bar on the main toolbar.
Name
Modelica ID
dutyCycle
Real input; duty cycle
fire
Boolean output; firing PWM signal
notFire
Default
Units
Use Constant Duty Cycle
true
True (checked) means use a constant Duty Cycle parameter, false means enable an input
useConstantDutyCycle
Duty Cycle
0
Constant duty cycle
constantDutyCycle
f
1000
Hz
Switching frequency
Start Time
s
Start time
startTime
The component described in this topic is from the Modelica Standard Library. To view the original documentation, which includes author and copyright information, click here.
See Also
DC AC
DC AC Control
Electrical Library
Power Converters
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