How could I figure out the m.file inside MATLAB simulink file? because I wanna change some parameter. Thanks

My problem is I have an example but I could not find inside the simulink

Answer 1

[Walter Roberson]

Right-click on a block and click on Explorer. On the page that comes up, in the Model Hierarchy, there will be a node for "Code for ..." (e.g., "Code for vipmosaicking"); click on that. That should allow you to see any associated standalone code.

If, though, the block is a MATLAB Function, then there will be a node in the hierarchy entitled "MATLAB Function": right-click on that and select Open. Alternately, if you know that a block is a MATLAB Function, then right in the graphical model view you can right-click it and select Open to be taken directly to the code.

[Zaid Adam]

Its not a block what I need to change that sometime you find a simulink file and when you run it , there were parameters I didn't see like this link https://www.mathworks.com/help/physmod/sps/examples/single-phase-240-vrms-3500-w-transformerless-grid-connected-pv-array.html

[Walter Roberson]

Parameters of blocks are not stored as .m files, they are saved in some data structure. In particular .slx files are .zip files that contain subdirectories and the parameters of models are stored in .xml files there.

[Zaid Adam]

Thanks Walter Roberson , Then how could I change them or try to figure out how could find them like this pic

[Walter Roberson]

Right-click on the block and select Block Parameters

[Zaid Adam]

but I cannot find the value I will find just the name what I want is to know these parameter values or to how they did that

[Walter Roberson]

Which model are you looking at? That block does not appear to be anywhere in the example https://www.mathworks.com/help/physmod/sps/examples/single-phase-240-vrms-3500-w-transformerless-grid-connected-pv-array.html that you indicated earlier.

[Zaid Adam]

It's appear inside the below block

[Walter Roberson]

I had to hunt around but I found it in VDC_Regulator there.

The Block Parameters for gain there shows up as 1/Vnom_dc . You can change that expression if you want.

In chasing through the model, at the moment I do not find any Vnom_dc defined. I do see that Invertor_Control has Vnom_dc1 which is a Constant Block whose value is Vdc_ref_Init . Looking at that diagram for Invertor_Control I see there is a Vdc_ref_init defined there.

At the moment I do not know how to track down the value assigned to Vdc_ref_init -- and I do not know if Vnom_dc1 should be connected to Vnom_dc

[Zaid Adam]

Thanks for your cooperation, I really need to figure out that, if you figure out that let me know please.