Electronics

Electronics

Can not plot total harmonic distortion (THD) of the phase back EMF

    • phuonganhlovely.me
      Subscriber

      hello everyone

        I am simulating an axial flux motor (AFPM) in EDT 2021 and I am trying to plot the total harmonic distortion (THD) of the phase back EMF. (As shown below), but I am unable to figure out how to do this. Does anyone have any suggestions or methods to get this result?

      Thanks in advance!  

    • kunaldugvekar
      Subscriber

      Hi, i think there is option of "Perform FFT on report" in the results tab.

      That should help

    • phuonganhlovely.me
      Subscriber

      Hi guy.

        the option of "Perform FFT on report" in the results tab it is not perform what i want because i think that option perform electric frequency of EMF it can not evaluate the harmonic distortion (THD)  

      do you have any suggestion ?

    • Navya C
      Ansys Employee

      Hi phuonganhlovely,

      I don't think you can plot THD directly.
      By performing FFT on the plot you will get the frequencies and you need to use the THD formula and calculate it manually.

      Regards,

      Navya

    • phuonganhlovely.me
      Subscriber

      please help

      By performing FFT on the plot you will get the frequencies so that how can i calculate  THD 

      i using this formula to calculate but i did not know where is the harmonic number? thank you very much for your help

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