DC-DC Buck-Boost Converter Closed Loop PWM control

Hi friends,

I have a buck boost converter that increase the voltage 10 to 15 shown below.

I think that is working. But when I need to add PWM control doesnt work.

Can you help me whats the wrong ? I added to powergui(continous) btw

thx

Answer 1

[Sabin]

The proportional control employed is not working properly. The controller is very basic, multiplying the error with a constant but the output of the controller is probably not normalized to the same range as the sawtooth generator. See this example for a starting point:

https://www.mathworks.com/help/sps/ug/inverting-topology-buck-boost-converter-control.html