What is the difference between armature winding and field winding?
Armature Winding is the winding, in which voltage is induced. Field Winding is the winding in which the main field flux is produced when the current through the winding is passed.
Is armature a rotor or stator?
In most generators, the field magnet is rotating, and is part of the rotor, while the armature is stationary, and is part of the stator. Both motors and generators can be built either with a stationary armature and a rotating field or a rotating armature and a stationary field.
What is field winding and stator winding?
In most modern installations, a synchronous generator is used as the exciter. For this purpose, the field windings of the exciter are placed on its stator and the phase windings on its rotor. A rectifier mounted on the rotating shaft is used to convert the alternating current to direct current.
Why is field winding put on rotors?
Field winding is place on the rotor to create rotating magnetic field. Field winding energised from dc source create a constant flux which rotates with the the rotor and this flux cuts the coils of stator which in turn induces emf in stator windings.
What is the difference between a rotor and a stator?
The term, “stator” is derived from the word stationary. The stator then is the stationary part of the AC motor. The rotor is the rotating electrical component. The rotor then is the rotating part of the AC motor.
What will happen when any winding is placed in rotating field?
As the rotor windings cut through the rotating field, current is induced in them. This induced current creates a field that, in turn, cuts through the stator windings to create power output to the load. The induction generator thus draws its excitation from the power system to which it’s connected.
What are the types of armature windings?
Types of Armature Winding:
- #1. Single Phase and Poly Phase Armature Winding:
- #2. Lap Winding: #2.1. Simplex Type Lap Winding: #2.2. Duplex Type Lap Winding: #2.3. Triplex Type Lap Winding:
- #3. Wave Winding:
- Coil group:
- Balanced Winding:
- Integral Slot and Fractional Slot Winding:
Why is armature winding on stator in synchronous machine?
This is the reason that DM (Demineralized Water) cooling is done for armature winding. As the cooling is efficient because of stationary armature winding and rotor weight is also less, therefore higher rotor speed is possible, thus increasing the Synchronous Machine output for a given dimension.
Why do you use field winding instead of armature?
This means it is far better and cheaper to use Field winding on the Rotor instead of armature. 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.
Where is the armature winding located in a DC machine?
Generally armature winding is housed on stator slots and field winding on rotor slots for Synchronous machine. In DC machine, armature winding is placed in rotor slots and field winding on stator slots. For detail, you are requested to read Construction of DC Machine.
What are the different types of motor windings?
The rotor includes the rotor winding as well as rotor core. The rotor winding is energized by the DC supply. The rotor can be classified into two types namely the phase wound and the squirrel cage.