How can one simulate Randles' Circuit of PEM fuel cell in MATLAB and Simulink?

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Jay Cho

Not sure about about Simulink (as I've never used it), but in Matlab you should be able to simulate Randle's circuit by coding Warbug element (ZW = AW/(jω)^0.5) manually into your equivalent circuit code.

Laya Das

In MATLAB, the transfer function form allows jw=s. The software does not take s^0.5.

If I do not use the transfer function concept, then I will not be able to extract the frequency from the time domain signal in real time.

Thank you for your thoughts on the problem.

Ay further help will be appreciated.

Hi Laya,

I was about to suggest not to use the transfer function but I see that you indicated that is not possible. Have you tried attempting s^(-1/2) instead? (I do not have MATLAB in handy so cannot check myself for now).