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Bifurcation diagram in DC converter

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Don Louis
Don Louis on 11 Jul 2011
Answered: Joel Van Sickel on 18 Aug 2021
Hi, I have a DC converter inplemented in Simulink with mainly blocks from SimPower Systems in which I built a bifurcation diagram (Iref or reference current against stable output voltage). My question is: How can I get a bifurcation diagram at stable voltage outputs points? At the moment I am getting a continuous diagram with samples at many instances instead of doing it only at the stable point solutions. Thanks in advance..
Regards,
Don

Answers (1)

Joel Van Sickel
Joel Van Sickel on 18 Aug 2021
Hello Don,
I realize this comment is too late to be of use to you and I apologize for that. As part of an effort to clean up Matlab Answers, I will be posting the answer for others who may use it as a reference.
The Simulink tool itself does not have the ability to automatically identify which points are stable. You would have to write a post processing script in matlab to look at the dynamic results and identify which points are stable. You can then pull these points specifically from the saved data set and create the bifurcation diagram that way.
Matlab also doesn't have built in support for bifucation diagrams. These post addresses it somewhat: https://www.mathworks.com/matlabcentral/answers/99328-how-do-i-create-a-bifurcation-diagram-in-matlab
Regards,
Joel

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