How can we see the harmonic distrotion of a three phase rectifier

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Maheswari Vayara 2020-7-30

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编辑： Sarvani Panguluri 2020-8-12

22.PNG

I have designed the three phase rectifier .I want to see the total harmonic distortion of 3 phase rectifier i had seen this by using the power gui and there i used ft analysis and there i used the fft window and used the value of f=50Hz and compared it with the fundamental frequency .Then i got this bar diagrams is it the correct procedure used for fft analysis of a rectifier.

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Answer 1

Sarvani Panguluri 2020-8-12

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https://ww2.mathworks.cn/matlabcentral/answers/572863-how-can-we-see-the-harmonic-distrotion-of-a-three-phase-rectifier#answer_478602

编辑：Sarvani Panguluri 2020-8-12

Hi,

I assume you are trying find the THD of rectifier.Yes, you can use the FFT analysis of power gui block for obtainingTHD .You can refer to the following links for more insight

https://www.mathworks.com/help/physmod/sps/examples/harmonic-analysis-of-a-three-phase-rectifier.html

https://www.mathworks.com/help/physmod/sps/examples/current-controlled-thyristor-rectifier.html#:~:text=The%20value%20of%20the%20fundamental,negligible%20in%20the%20current%20THD.

Hope it helps!