The Working Principle Of Motor Armature In Motor

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by Slinger Fu

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08.08.2021

What is a motor armature?

It is a key and pivotal component in the process of mutual conversion between mechanical energy and electric energy of the motor. For a generator, it is a component that generates electromotive force, such as the rotor in a DC generator, and the stator in an AC generator; for a motor, it is a component that generates electromagnetic force, such as the rotor in a DC motor.

The motor armature is a component with a coil in the motor, and the relative movement of the coil to the magnetic field. In a generator, an induced electromotive force is generated in a coil that is rotated by a force, causing it to generate electricity. In a motor, the energized coil is subjected to ampere force in the magnetic field, causing it to rotate in the magnetic field.

In most generators, the field magnet is rotating and is part of the rotor, while the motor armature is stationary and part of the stator. Both electric motors and generators can be composed of a fixed armature and a rotating magnetic field or a rotating armature and a fixed magnetic field. The pole shoes of the permanent magnet or electromagnet and the moving iron part of the solenoid (especially if the latter is used as a switch or relay) can also be called an armature.

What is motor armature of a DC motor made of? 

In a DC motor, the motor armature is the part of the rotor with wires to realize the mutual conversion of mechanical energy and electric energy. DC motor, input DC power, the armature winding is subjected to ampere force in the magnetic field, generating a driving torque, and dragging the load to move , Convert the input DC electrical energy into output mechanical energy. The armature winding is an important part of the DC motor. The conversion of electromechanical energy in the motor is realized through the armature winding, so the rotor of the DC motor is also called the armature.

The armature reaction of a DC motor refers to the fact that the armature winding rotates in the magnetic field generated by the field winding to induce a current, and the magnetic field generated by the current has a serious impact on the magnetic field generated by the field winding. The armature reaction involves two magnetic fields, and it is this The function of the two magnetic fields is the mutual conversion of electrical energy and mechanical energy. The effect of the armature reaction of the DC motor on the motor. The air gap magnetic field is distorted. When the generator is running, the magnetic field at the front pole tip is weakened, and the magnetic field at the rear pole tip is strengthened; When the motor is running, the magnetic field of the front pole tip is strengthened, and the rear pole tip is weakened.

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