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Manufacturing Technology Insights | Monday, February 13, 2023
Power generation applications can benefit from AC motors because they are efficient, long-lasting, quiet, and adaptable.
Fremont, CA: The electric motor converts electrical energy into mechanical energy through electromagnetic phenomena. The F = BIl Newton equation determines how much force is exerted by a current-carrying conductor in a magnetic field, and Fleming's Left-Hand Rule determines how much force is exerted in which direction.
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Conductors and fields are arranged differently in electric motors, as well as the degree of control over torque, speed, and position that can be exercised. The following are the two main types of electric motors:
• The alternating current motor, which is powered by alternating current
• A direct current motor is powered by a DC current
It is possible to find electric motors in a wide variety of sizes and types. Based on their functions, voltages, and applications, these motors can be selected.
How does An Electric Motor Work?
Electric motors convert electricity into mechanical energy, whereas electric generators produce electricity. There are two important components of every motor: the field winding and the armature winding. An armature winding resembles a conductor arranged within a fixed magnetic field, whereas a field winding generates a magnetization field. The theory of electromagnetism states that when an electrical current passes through a magnetic field, a force is applied. It causes torque on the windings of the armature by rotating it around the shaft.
AC MOTOR:
The rotation of an AC motor requires an alternating current. During operation, alternating current is converted to mechanical power by electromagnetic induction. AC motors generate energy through magnetic fields created by coils wrapped around their output shafts. Power generation applications can benefit from AC motors because they are efficient, long-lasting, quiet, and adaptable.
There are two main components of an AC motor: a stator, which is a fixed outer drum, and a rotor, which is a revolving inner section. An alternating current winding creates the rotating magnetic field that is generated by the stator and rotor.
The stator and rotor windings produce voltages when an AC supply flux is connected to the stator. This causes an air gap to be created, which rotates the flux at a fixed synchronous speed.
DC Motor:
Mechanical rotation is produced by DC motors by converting direct current electricity into mechanical energy. Additionally, the device can be reversed to generate DC electricity by turning a motor shaft (making the device act as a generator). DC motors can be classified according to their winding connections. When a DC motor is turned on, a magnetic field is generated in the stator. Rotor rotation is caused by magnets on the rotor being attracted to and repelling each other. Current is supplied to the rotor's windings by the commutator, which is connected to brushes connected to the power source.
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