Armature Stator
Armature stator
The armature is the winding to which the load is connected. In small generators, the field windings are often on the stator, and the armature windings are on the rotor. Most large machines, however, have a rotating field and a stationary armature. A synchronous motor is virtually identical to a synchronous generator.
Why armature is used as stator?
Greater amount of Copper can be accommodated if the Slot / Tooth is deeper and strong enough. If the Armature would have been on Rotor then Slot / Tooth would have been narrow and weaker. Thus armature on the Stator allows stronger and deeper Slot / Tooth.
What's the difference between stator and armature?
The armature provides housing and support to the armature winding. In electrical machines, the magnetic field is generated by a permanent magnet or electromagnet. The armature winding interacts with the magnetic field formed in the air gap. The stator can be a rotating part (rotor) or stationary part (stator).
What is the function of an armature?
The armature's role is twofold. The first is to carry current across the field, thus creating shaft torque in a rotating machine or force in a linear machine. The second role is to generate an electromotive force (EMF).
What is called armature?
1. a revolving structure in an electric motor or generator, wound with the coils that carry the current. 2. any part of an electric machine or device that moves under the influence of a magnetic field or within which an electromotive force is induced. 3.
What is armature in a motor?
An armature is a device through which electric current is passed for generating torque (rotor). The current that passes through the rotor is sometimes called the armature current. The word "armature" refers to a device through which electric current is passed for generating torque.
What are the 4 parts of an armature?
An armature is made up of a number of main components; the core, the commutator, the winding and the shaft.
Where is the armature in a motor?
A DC motor has coils of wire mounted in slots on a cylinder of ferromagnetic material, which is termed the armature. The armature is mounted on bearings and is free to rotate. It is mounted in the magnetic field produced by permanent magnets or current passing through coils of wire, which are called the field coils.
What is armature voltage?
The armature voltage formula is. V = k η ϕ Where k is constant based on armature design, is armature speed in rpm and is flux generated by the magnetic field. However in physical motors, the resistance is distributed from one end of the winding to the other. Armature voltage is the same as terminal voltage.
What is difference between armature and rotor?
So basically, the rotor consists of a field magnet which rotates while the rotor remains stationary and on the other hand the armature carries current and is stationary and part of the stator.
Do AC motors have an armature?
The armature is an integral part of the motor (or generator), as this is the component that carries the alternating current (AC) in an electric machine.
How is armature made?
An armature for an electric motor with a shaft, a stack of laminations arranged on the shaft, a commutator likewise arranged on the shaft and comprising several commutator segments and a plastic filling, and a wire winding wound around the stack of laminations and welded to the commutator is manufactured by first
What is a starter armature?
The armature is an electromagnet, mounted on the drive shaft and bearings for support. It is a laminated soft iron core which is wrapped with numerous conductors, loops or windings.
What is the armature in a DC motor connected to?
The armature is connected to a DC power source through a pair of commutator rings. When the current flows through the coil an electromagnetic force is induced on it according to the Lorentz law, so the coil will start to rotate.
What is meant by armature control?
Armature control is the most common control technique for DC motors. In order to implement this control, the stator flux must be kept constant. To achieve this, either the stator voltage is kept constant or the stator coils are replaced by a permanent magnet.
What is another name of armature?
structure | framework |
---|---|
frame | shell |
fabric | skeleton |
edifice | configuration |
infrastructure | framing |
What is the difference between armature and commutator?
Armature | Commutator |
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It provides current to commutator from the core of the armature | It changes AC to DC & vice-versa |
It is a set of coils arranged in the core | It is a set of segments |
Why brush is used in motor?
Brushes are used to serve electrical contact between the stationary points and the moving surfaces. They are mainly used to transfer power from rotatory armature coils to stationary wires. They are used to reduce the damage of the motors.
What are the three types of armature winding?
Types of Armature Winding
- Simplex Type Lap Winding.
- Duplex Type Lap Winding.
- Triplex Type TLap Winding.
What causes the armature of a DC motor to rotate?
The motor's magnet exerts a force (up on one side, down on the other) on the armature, which causes the armature to rotate. Thus the armature experiences a torque due to interaction of its magnetic moment and motor's magnet.
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