Consider the above equivalent circuit of Synchronous Machine. The nominal values of a star connected synchronous generator are : 60 MVA, 15 kV, 50Hz , 3000rpm. Since the synchronous reactance of this machine X0= 75% and artery resistance r=1.5 mΩ, calculate the values of induced pole wheel voltage (Ef) a)while the machine is running ohmic(cos(Ø) = 1 at rated load b)while the machine is running ohmic(cos(Ø) = 0.8(end) at rated load
Synchronous Generator
In comparison to an asynchronous generator, it is a machine where the rotor speed is equal to the rotating magnetic field produced by the stator, i.e., mechanical speed is equal to the electrical speed, thus called synchronous, and not asynchronous.
Salient Pole Rotor
Salient pole rotor includes a large number of exposed poles mounted on a magnetic wheel. The construction of a bright pole is as shown in the image on the left. The proposed poles are made of metal laminations. The rotor winding is provided on these poles and is supported by pole shoes.
Electric Machine; Check image, all question there.
Consider the above equivalent circuit of Synchronous Machine. The nominal values of a star connected synchronous generator are : 60 MVA, 15 kV, 50Hz , 3000rpm. Since the synchronous reactance of this machine X0= 75% and artery resistance r=1.5 mΩ, calculate the values of induced pole wheel voltage (Ef)
a)while the machine is running ohmic(cos(Ø) = 1 at rated load
b)while the machine is running ohmic(cos(Ø) = 0.8(end) at rated load
Step by step
Solved in 4 steps with 9 images
