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ericsson
ericsson • Jan 15, 2009

Generator PF

Friends,

I hava a dout...
please clarify

My generator has a rated powerfactor of 0.8 as specified in their name plate, what happened if i have run the generator at 0.9 - 0.95 PF(because of increasing PF we have more units export to grid)

Thank u
vasanthmbs
vasanthmbs • Jan 15, 2009
there is no pf in dc generator ... in alternator , we can control power factor by adding capacitor banks outside of alternator... but there is no chance for modification in alternator........ i hope u understand.........
ericsson
ericsson • Jan 15, 2009
No, in AC alternator we have to vary its individual power factor by adjusting the VAr/PF controller(field Excitation). Please refer and explain otherwise dont confuse me...

Thank u....
ashuashi
ashuashi • Jan 16, 2009
vasanthmbs
there is no pf in dc generator ... in alternator , we can control power factor by adding capacitor banks outside of alternator... but there is no chance for modification in alternator........ i hope u understand.........
For generators, P.F. is not improved using capacitor banks because it adds load to generator. Further the generator designed p.f. is for its alternator will work on 0.8 p.f. If load is high inductive then the p.f. will go down & need to be adjusted through AVR. Not very improved p.f. is attained at high inductive loads.

It is good that your D.G is running at 0.9-0.95 p.f.
ericsson
ericsson • Jan 16, 2009
thank u sir

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