Difference between Alternator and Generator

Q1

How to reduce the eddy current losses??

The eddy current losses can be reduced by laminating the core and insulating it from each other with the help of either a paper or a varnish.

Q2

What are the advantages of the stationary armature and rotating field system?

The following are the advantages of the stationary armature and rotating field system:

• The installation of stationary armature coils becomes easy.
• The peripheral speed can be achieved easily.
• The number of slip rings used is two.

Q3

What are the advantages of the stationary armature and rotating field in an AC generator?

Following are the three advantages of the stationary armature and rotating field in an AC generator:

• Collecting output becomes easy from the stationary armature.
• The stationary armature can be used with higher voltage.
• When the armature is stationary, it becomes easy to supply low-voltage excitation to the rotor through the slip rings.

Q4

What are the advantages of parallel operations of alternators?

The following are the advantages of parallel operations of alternators:

• In case of breakdown of an alternator at the production place, the parallel operations make sure that the connection is continuous to its consumers.
• This arrangement of alternators makes the operation efficient. Also, it is considered to be economical.
• The installation of more alternators in times of requirement becomes easy as the other alternators are arranged parallel to each other.
• The arrangement helps in meeting the requirement of a large alternator through multiple alternators and their arrangement in parallel operation.

Q5

What are the losses in a generator?

The following are the losses in a generator:

• Friction loss
• Windage loss
• Rotor copper loss
• Stator copper loss
• Stator iron loss