Why stationary armature type alternator is widely used ? Option 1: 2 slip rings used, more efficient cooling, less insulation Option 2: None of these. Option 3: 3 slip rings, insulation cost is high,no winding damages Option 4: 2 slip rings used, high insulation , no damages to windings.
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.
Why stationary armature type alternator is widely used ?
- Option 1:
2 slip rings used, more efficient cooling, less insulation
- Option 2:
None of these.
- Option 3:
3 slip rings, insulation cost is high,no winding damages
- Option 4:
2 slip rings used, high insulation , no damages to windings.
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