How to find frequency of the signal coming from an inverter output, simulink?

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Giridhar sai pavan kumar Konduru 2022-6-21

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回答： Joel Van Sickel 2022-6-28

I need to find the frequency of the signal coming out from the inverter at AC+ port line as shown below. There is no direct simulink tool to do this and for some reason, I couldn't attach even a scope at the AC+ terminal?

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Answer 1

Joel Van Sickel 2022-6-28

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https://ww2.mathworks.cn/matlabcentral/answers/1744530-how-to-find-frequency-of-the-signal-coming-from-an-inverter-output-simulink#answer_995525

you attatch the scope to voltage and current measurement outputs. You have a voltage measurement right there that you could attatch a scope to. You can use various signal processing blocks in simulink to analyze the frequency content of the signal. You can use something like a phase locked loop: https://www.mathworks.com/help/physmod/sps/powersys/ref/positivesequenceplldriven.html

or you can use the spectrum analyzer, one ships with simscape electrical if you have a newer version. https://www.mathworks.com/help/dsp/ref/spectrumanalyzer.html

Regards,

Joel