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Draw the output voltage waveform for firing angle of =150

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sina shekari

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There are 4 SCR and 2 diode.
After drawing the output voltage I would be grateful if someone could calculate the Mean voltage.
IMG_0377.JPG
 

There are 4 SCR and 2 diode.
After drawing the output voltage I would be grateful if someone could calculate the Mean voltage.
Click to expand...

Hi Sina
In your case out put voltage ( average ) can be easily calculated by the formula : sqrt(1/T integral over Vm^2 sin wm^2 dt ) from zero up to the firing angel .

But of course i hope you know if the load is inductive then the firing angel would be affected and will be changed and calculation needs more patience .

Best Wishes
Goldsmith
 

goldsmith said:
Hi Sina
In your case out put voltage ( average ) can be easily calculated by the formula : sqrt(1/T integral over Vm^2 sin wm^2 dt ) from zero up to the firing angel .

But of course i hope you know if the load is inductive then the firing angel would be affected and will be changed and calculation needs more patience .

Best Wishes
Goldsmith
Click to expand...
this formula is for RMS...
can you drawing the output voltage?
 

this formula is for RMS...
can you drawing the output voltage?
Click to expand...

Hi
Oops ! sorry yeah you're absolutely right i wanted to write RMS but my typo .

Anyway , average formula is this : 1/T integral over Vs dt from zero up to firing angel .

Good Luck
Goldsmith
 

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