I have a question about "Error in port widths or dimensions. 'Output Port 1' of 'From32' is a one demensional vector with 3 elements"

I have a question about "Error in port widths or dimensions. 'Output Port 1' of 'From32' is a one demensional vector with 3 elements" and "Error in port widths or dimensions. 'Input Port 2' of 'Alpha-Beta-Zero to dq0' is a one dimensional vector with 1 elements.".

I wanna know why these errors occurred.

I don't know how to solve these errors.

Please help me solve these errors.

This picture is a circuit that I made.

Yellow From Block is 'From32' and Alpha-Beta-Zero to dq0 is the block connected to 'From32'

I'm using MATLAB R2021b version.

Answer 1

[madhan ravi]

Park Transformation block only accepts a positive scalar for The angular position of the rotating frame is given by the input wt, in rad. You are feeding in a vector with 3 elements.

[Walter Roberson]

Right solution, wrong link;

https://www.mathworks.com/help/sps/powersys/ref/alphabetazerotodq0dq0toalphabetazero.html

Easy to miss, though, as the abc to dq block is immediately above the yellow From32 block; the From32 is leading to the alpha-beta-zero to dq block though.

[madhan ravi]

Ha! Thank you! Sometimes it’s difficult to just answer using phone ;).

[madhan ravi]

As suspected https://www.mathworks.com/help/sps/powersys/ref/pll3ph.html you need to use 3 Phase PLL to determine the angle. Watch this video on how to implement it https://youtu.be/HFi2bMzsgDA?si=3JgtJxlU3uZb239a