Draw the output voltage waveform for firing angle of =150

[sina shekari]

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

 

[goldsmith]

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

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

 

[sina shekari]

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

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

 

[goldsmith]

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

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