implementing a two-loop PI controller for both current and voltage - buck converter

I'm working on a project involving a DC-DC buck converter for a battery system in MATLAB Simulink. I need help implementing a two-loop PI controller for both current and voltage. Can someone guide me on how to set this up?

[Sam Chak]

If you have prior experience in control systems from your undergraduate engineering courses, constructing the model in Simulink should be a relatively straightforward task, potentially taking less than a minute. However, designing the double PID controllers may present an additional challenge if you are not familiar with the underlying "graph-to-gain" mathematical formulas.

Could you please provide the relevant formulas from your lecture notes on the Buck Converter? Having access to those materials would be helpful for Simulink/Simscape Expers to better understand the approach you are attempting to implement.

Answer 1

[Sabin]

There are many relevant examples in Simscape Electrical to start with. Check out this bidirectional DC-DC converter current control that is charging a battery:

https://mathworks.com/help/sps/ug/bidirectional-dcdc-current-control.html

A simple voltage control example can be found here:

https://mathworks.com/help/sps/ug/buck-converter-voltage-control.html