Thyristor Power Consumption

[pcsandhya82]

Does thyristor power consumption depend on average current I(t)? Or is the power consumption dependant on RMS Current?

Also, "For a given average
current, the power dissipated at small
conduction angles is much higher than at large
conduction angles. This is a result of the higher
rms currents at small conduction angles."
How can it be explained?

 

[Raza]

This declaration is about which circuit ?
As the Thyristors do not consume power by themselves.

 

[atripathi]

if you want to calculate power dissipation in thyristor, you should multiply Voltage across thy with current through it and integrate this over one cycle. For half sine wave conduction I would go for average current during that period. You may also want to refer following appnote

**broken link removed**