Power Factor

Why the Voltage rises when Leading Power Factor is occurs?

Questions by Pavankumar_reddy5

Showing Answers 1 - 6 of 6 Answers

SURAJTHEGREAT

  • Mar 18th, 2009
 

We know flux is 90 degree ahead of voltage...If leading p.f. load is connected,the armature flux and main flux aid each other,Bcoz current(field current=flux)is 90 degree ahead of voltage. (Thus 2 fluxes aid each other)and since voltage propotional to flux,voltage increases..

  Was this answer useful?  Yes

shobhit bansal

  • Apr 3rd, 2009
 

When there is a case of leading power factor, that means synchronous generator works in over
excitation mode, reactive power will be generated, and as we know that change in voltage is directly proportional to the reactive power so there is an increase in voltage level. 
This phenomenon can also be explained with the help of Ferranti effect. with the help of phasor diagram we can understand it.

  Was this answer useful?  Yes

Give your answer:

If you think the above answer is not correct, Please select a reason and add your answer below.

 

Related Answered Questions

 

Related Open Questions