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A.V.R maintains the voltage of a generator when it is in
island mode but when the generator is synchronised with
grid it maintenance the P.F,how it happens please any body
explain it in detail.
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Answer Posted / sukant mohanty
in isjand condition the terminal voltage v is not constant, at that time avr maintain terminal v by increasing or decreasing exitation current. But in synchronised condition the terminal v get constant as the grid voltage, at that time the variable remains ICOS(THETA). So avr maintains p.f. at that time.
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