What is a armature core?

Armature Core. The central mass of iron on which the insulated wire, to be rotated in the field of an electric current generator or motor, is wound.

What are the parts of armature?

An armature is made up of a number of main components; the core, the commutator, the winding and the shaft.

• About the core. The core of an armature is made up of lots of thin metal plates called laminations, which are usually about 0.5mm thick.
• About the commutator.
• About the windings.
• About the shaft.

What is armature core in DC motor?

Armature core: Armature core is the rotor of a dc machine. It is cylindrical in shape with slots to carry armature winding. The armature is built up of thin laminated circular steel disks for reducing eddy current losses. It may be provided with air ducts for the axial air flow for cooling purposes.

What are the 4 parts of an armature?

These parts include the core, the winding, the commutator and the shaft. Armatures can be applied in a variety of ways including: Electric machines for generating power.

What are the components of armature reaction?

Armature Components. An armature can be designed with the number of components namely the core, the winding, the commutator, & the shaft.

How is an armature wound?

Armature reaction is essential in amplidyne rotating amplifiers. Armature reaction drop is the effect of a magnetic field on the distribution of the flux under main poles of a generator. Since an armature is wound with coils of wire, a magnetic field is set up in the armature whenever a current flows in the coils.

What is lamination of armature core?

The individual iron pieces that make up the armature are referred to as laminations. The top image depicts a solid armature, while the bottom image shows an armature made of five laminations. The sum of the eddy currents in the laminated core is smaller than the current in the solid core.

What is the definition of armature core in Mechanical Engineering?

In an Induction Machine and Synchronous Machine, the armature is wound on the stator. In DC Machine, armature is wound on the rotor. Hence the definition of armature core changes with change in machine. Armature core is a physical structure made up of silicon steel stampings. The core is laminated to keep iron losses low.

How do I know if my armature has been damaged?

The motor runs very hot and slows down after a few minutes of operation! The armature wires will look dark in color relative to the other windings on the armature. A sure sign that the armature has been damaged. The field winding is getting very hot too.

How does an armature motor work?

On this armature, we have a shaft and a commutator, which has bars. The commutator bars are connected to the armature winding and the winding is wound around the teeth on the lamination stack. This creates an electromagnetic effect, which interacts with the permanent magnets in the motor housing, causing the motor to turn.

Is armature a conductor or a conductor?

The armature must carry current, so it is always a conductor or a conductive coil, oriented normal to both the field and to the direction of motion, torque (rotating machine), or force (linear machine). The armature’s role is twofold.