formula for firing angle of SCR - Electronic Circuits Projects Diagrams Free

seshadri · 21st January 2004, 12:45 PM

Hi,

I'm involved in a project which needs the formula (if any)firing angle of SCR.Can u help me out?

Styx · 21st January 2004, 02:16 PM

For a 3ph system:

[(3* sqrt(2) )/Pi]*Vline * Cos(alpha)

For single phase systems:

[(2* sqrt(2) )/Pi]*Vphase*cos(alpha)

Where alpha is your firing angle

Hope this is of help.

21st January 2004, 12:45 PM	(permalink)
seshadri New Member	formula for firing angle of SCR Hi, I'm involved in a project which needs the formula (if any)firing angle of SCR.Can u help me out?

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21st January 2004, 02:16 PM	(permalink)
Styx Experienced Member	For a 3ph system: [(3* sqrt(2) )/Pi]Vline Cos(alpha) For single phase systems: [(2* sqrt(2) )/Pi]Vphasecos(alpha) Where alpha is your firing angle Hope this is of help.