Hi,
I had to design a three phase four wire system supplying non linear loads using simulink. The aim was to obtain the harmonic content generated by these loads. I was successful in the design. However, I could not get the fft using the powergui from simpowersystems (for some unknown reasons it is not available on my cd). So, I've tried to send the data to workspace where i have written an M-file to generate the fft.
Unfortunately, it does not seem to be that easy. I fail to get the harmonic frequencies and I just can't interprete the graph i have obtained. It does not make sense since the ac current has a fundamental at 50Hz and the graph i obtain contains just a dc component.
I've attached a schematic of the circuit i simulated + M-file.
Can anyone suggest an easier way to get the harmonic content?
Thanks
I had to design a three phase four wire system supplying non linear loads using simulink. The aim was to obtain the harmonic content generated by these loads. I was successful in the design. However, I could not get the fft using the powergui from simpowersystems (for some unknown reasons it is not available on my cd). So, I've tried to send the data to workspace where i have written an M-file to generate the fft.
Unfortunately, it does not seem to be that easy. I fail to get the harmonic frequencies and I just can't interprete the graph i have obtained. It does not make sense since the ac current has a fundamental at 50Hz and the graph i obtain contains just a dc component.
I've attached a schematic of the circuit i simulated + M-file.
Can anyone suggest an easier way to get the harmonic content?
Thanks
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