Simulink model of avarage values model of buck converter with Pi current control

Hello, how can I model an avarage values model of a buck converter with a PI current control. The idea was to go in p.u. values and with a basic pi loop that generate the Duty cycle (in p.u. taking as base the max load is equivalent to the voltage in p.u.) that is entering the controlled voltage source block (Simscape-9) that is feeding a resistance (load) through an filtering inductance.

can you give me a schematic in simulink of the model?

thanks

something like that

Answer 1

[Sabin]

You should focus on will need to balance the power in and power out. Check out this block in Simscape Electrical which is doing what you are aiming for:

https://mathworks.com/help/sps/ref/averagevaluedcdcconverter.html

[JOSIP]

thank you for your answer. I tried to use the pre made block and it's ok.

But I need to do the model without the pre-made block.

I tried but the wave forms of V and I are not ok. It could be the PI tuning?

I use generally a 10 times difference between I and P constant.