square wave signal in sync with PWM generator

Hello All,

I'd need to generate a square wave signal which is in sync with PWM carrier as depicted.

I use the PWM generator module (simscape) - I wonder how to sync the required sqaurewave pulse with PWM carrier?

Vdh (squarewave) is applied in deferrent referance (sync rotating frame) frame as 3-phase PWM operates (stationary frame).

Is it a way to sync PWM carrier and squarewave signal?

Thank you for advice.

Answer 1

[Vinay]

Hi @Peter,

I understand that you want to generate a square wave with a duty cycle of 0.5 and in sync with the PWM generator.

The diagram shared by you shows a square wave trigeering at 2*Tper , 4*Tper and so on where Tper is the time period of the PWM generator.

The square wave can be generated by using a PWM generator with time period 4 times the original PWM generator and carrier counter as "Up". This ensures a square pulse with time period of 4*Tper in sync with the PWM generator .

Kindly refer to the below documentation of PWM generator for more details

https://www.mathworks.com/help/releases/R2024b/sps/ref/pwmgenerator.html?searchPort=56299

I hope this helps!