Error in port widths or dimensions. Invalid dimension has been specified for 'Input Port 1'

Hi,

When clicking on Run button I always get this error. For some reason a text "24{24}" appears close to the BusBar, and I get the following error:

Error in port widths or dimensions. 'Output Port 1' of 'MicrogridActivePowerControl/powergui/EquivalentModel1/Gates/From1' has 3 elements. This port does not accept the dimensions (or orientation) specified by the output signal.

Component:Simulink | Category:Model error

Error in port widths or dimensions. Invalid dimension has been specified for 'Input Port 1' of 'MicrogridActivePowerControl/powergui/EquivalentModel1/Gates/Mux'.

Can anyone tell me, how to find the issue rellated and fix it?

Answer 1

[Nathan Hardenberg]

The error seems to be noticed in 'MicrogridActivePowerControl/powergui/EquivalentModel1/Gates/From1'. I'm guessing this is the "PWM"-From-Block to the right. A few steps beforehand you have a "PID(s)"-Block that seems to have an issue.

Note that the numbers on the arrows show the dimensions of the signal. Everyehere where there is a "?(dimension)", the compiler does not know the size of the signal. Since before the PID-controller the size is known and afterwards it isn't, the problem is most likely there. Maybe replace the block with a default PID and check if it works. Then change the block settings one at a time and check when it breaks. This assumes you changed anything in the PID-controller.

Second option: When looking at you diagram it seems that PWM should be of size [1x1] (the same as 1) since you only conntrol one gate. Note that your "RMS Measurement" outputs a vector of size [3x1] already. Maybe this is something you don't actually want. If you only want one of the three signals, use a selector block after the "RMS Measurement"

To the Mux Block error I can not say anything, since I do not know where the "-T-" comes from. It most likely assumes a 5-vector output which is can not do if the first input is of dimension 3 already. But maybe this fixes if you fix the other problem.