Modelica.Electrical.PowerConverters.DCDC.Control

Control components for DC to DC converters

Information

Currently there is only one PWM method provided in this library.

Extends from Modelica.Icons.Package (Icon for standard packages).

Package Content

Name	Description
SignalPWM	Generates a pulse width modulated (PWM) boolean fire signal
VoltageToDutyCycle	Linearly transforms voltage to duty cycle

Modelica.Electrical.PowerConverters.DCDC.Control.SignalPWM

Generates a pulse width modulated (PWM) boolean fire signal

Information

This controller 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 Fig. 1.

**Fig. 1:** Firing (`fire`) and inverse firing (`notFire`) signal of PWM control; `d` = duty cycle; `f` = switching frequency

The firing signal is generated by comparing the sampled duty cycle input with a periodic saw tooth signal [Williams2006].

Extends from Icons.Control (Control icon).

Parameters

Name	Description
useConstantDutyCycle	Enables constant duty cycle
constantDutyCycle	Constant duty cycle
f	Switching frequency [Hz]
startTime	Start time [s]

Connectors

Name	Description
dutyCycle	Duty cycle
fire	Firing PWM signal
notFire	Firing PWM signal

Modelica.Electrical.PowerConverters.DCDC.Control.VoltageToDutyCycle

Linearly transforms voltage to duty cycle

Information

This model linearly transforms the input voltage signal into a duty cycle. For the unipolar case the input voltage range is between zero and vMax. In case of bipolar input the input voltage is in the range between -vMax and vMax.

Parameters

Name	Description
useBipolarVoltage	Enables bipolar input voltage range
vMax	Maximum voltage range mapped to dutyCycle = 1 [V]

Connectors

Name	Description
v	Voltage
dutyCycle	Duty cycle

Automatically generated Tue Apr 05 09:36:27 2016.