PWM-3 Phase

Category: Toolbox > eDrives > Inverters

Inputs:

• Duty[1,2,3](0..1): Three-phase duty cycle input. Typically the controller outputs are modulation indices (m) , not the duty cycle (d) and the relationship between these two variables is defined as $%FontSize=10 %TeXFontSize=10 \documentclass{article} \usepackage{amsmath} \pagestyle{empty} \begin{document} $ d=\frac{m+1}{2} $ \end{document}$ .

Outputs:

• PWM[1,2,3]: The internally generated three-phase PWM output that is used to control the switches of the converter.

• s: A one-time-step long pulse used to trigger the sampling of an ADC model.

• Ts: The sampling period based on the selected number of events and the switching frequency.

Description: The PWM-3 Phase block is used for generating 3-phase PWM signals, with switching included.

Graphical user interface, text, application

Description automatically generated

Output Sample On: Sets the moment in the PWM period at which a unit pulse will be generated at the output pin.

PWM Timer Frequency (MHz): Specifies the timer frequency used for PWM generation. This will determine the PWM resolution.

PWM Counter Mode: Selects the counter mode of the PWM generation. Note that up/down count mode halves the switching frequency.

Sample Out On: Specifies the frequency of the sample pulse.

Switching Frequency (kHz): Specifies the required PWM switching frequency.