Answer / shubham

In a synchronous generator according to its eq. ckt diagram
there's a simple eqn showing the relation between excitation
ad op voltage
E(excitation emf)- {I(armature current)*Z(synchronous
impedence))=V(terminal emf)

Answer / rahul

first find e.mf generated in armature conductor,

EB=p×phi×n×z/(60a)

the output

V=Eb-IaRa

I have a small system with two motors that are running on 380 vac, 60 hz. These motors are expensive and I usally get them from Brazil. I am adding another motor to the system, but I want to purchase a 480 vac, 60 hz motor to use. It will be on a VFD that is rated fro 380 thru 480. Is this posible and will I have to use a larger motor and derate it?

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