Hey,
According to my understanding you have some data in excel file which you want to use as an input to AC voltage Source.
In order to use the excel data as an AC voltage source you will first have to import it into your MATLAB workspace, then you can use the “From Workspace” block to load data into a “controlled voltage source” block.
Use the following command in MATLAB command window to load data into MATLAB Workspace
>> filename = “enter_filename”;
>> [num_data, txt_data, raw_data] = xlsread(filename);
>> L1 = num_data(:, 1);
>> L2 = num_data(:, 2);
>> L3 = num_data(:, 3);
>> time = datetime(txt_data)
You can now input voltage values into a controlled voltage source.
Please find below the link to documentation of “From Workspace” block and “Controlled Voltage Source” block.
From Workspace: https://www.mathworks.com/help/simulink/slref/fromworkspace.html
Controlled Voltage Source: https://www.mathworks.com/help/sps/powersys/ref/controlledvoltagesource.html
Please find below the link to a similar question on MATLAB answers which might be helpful.
https://www.mathworks.com/matlabcentral/answers/1952348-importing-voltage-data-to-ac-voltage-source-in-simulink?s_tid=srchtitle
