What is the main advantage of rotating field alternator?
Table of Contents
- 1 What is the main advantage of rotating field alternator?
- 2 What are the advantages of providing the field winding on rotor and armature winding on the starter?
- 3 Why is rotating field preferred over stationary field?
- 4 What are the advantages of placing field winding?
- 5 Why is stationary armature preferred over rotating armature?
- 6 What are the advantages of stationary armature?
What is the main advantage of rotating field alternator?
1) The current is drawn directly from fixed terminals on the stator without the use of brush contacts. 2) The insulation of stationary armature winding is easier. 3) The number of sliding contacts (slip rings) is reduced. Moreover, the sliding contacts are used for low-voltage DC Source.
What are the advantages of placing field winding on rotor and armature winding on stator in syn machine?
More Efficient: With armature on the Stator and Field winding on the Rotor, only two slip rings are required due to which losses associated with slip ring and carbon brushes are reduced and efficiency increases.
What are the advantages of providing the field winding on rotor and armature winding on the starter?
4. What are the advantages of providing the field winding on rotor and armature winding on the stator? Explanation: If the armature winding is on the stator, only two slip rings are required which implies less losses, more efficiency and more economy. Also, stationary armature winding can be cooled more efficiently.
What are the advantages of having stationary armature?
The advantage of stationary armature of a synchronous machine is
- Reducing number of slip rings on the rotor.
- Difficulty of providing high voltage insulation on rotor.
- Armature is associated with large power as compared to the field circuits.
- All option are correct.
Why is rotating field preferred over stationary field?
Because you would have to draw all the power via slip rings and brush-gear and one could not generate at say 11 kV. That is why a rotating DC field is preferred and why the stator is able to generate at very high voltage levels as the insulation issues are much easier to handle.
What are the advantages of rotating fields?
Advantages of Rotating Field with Stationary Armature Rotating field is comparatively light and can run with high speed. High voltage can be generate due to high speed and there is very little difficulty in providing high voltage on a stationary part than a moving part.
What are the advantages of placing field winding?
By placing field winding in rotor and armature winding in stator we get following advantages: It simplifies the design. It reduces the size of the machine when compared with machine which has field winding in stator. (Because field winding size will be comparatively smaller than armature winding of a alternator.)
What are the advantages of placing field winding on rotor?
The field winding of an alternator is placed on the rotor and is connected to DC supply through two slip rings. It is easier to insulate stationary winding for high voltages for which the alternators are usually designed.
Why is stationary armature preferred over rotating armature?
It is easier to collect current through bruses from stationary armature in case of generators. When armature winding is stationary and field winding rotates we get more output as field winding is quite lighter than armature winding. There is less chances of sparking in stationary arm.
What is rotating field type alternator?
The revolving field type of alternator (figure 9-34) has a stationary armature winding (stator) and a rotating field winding (rotor). The advantage of having a stationary armature winding is that the armature can be connected directly to the load without having sliding contacts in the load circuit.