An Ac motor is a common type of motor, driven by AC current. Like most effective and practical motors used in everyday industrial applications (as well as amateur projects, household goods, and various other professional equipment and consumer products), Ac motors provide a relatively effective method of generating mechanical energy input signals from simple electrical energy.
This passage is going to talk about the followings of an ac motor:
(1) Introduction to ac motor
(2) The working principle of ac motor
(3) The wide usage of ac motors
Definition: A motor that uses electromagnetic induction to convert AC power into mechanical power is called an Ac motor. The motor is driven by alternating current. The stator and rotor are the two most important parts of an Ac motor. The stator is the fixed part of the motor, and the rotor is the rotating part of the motor. Ac motors can be single-phase or three-phase.
How does an Ac motor work? As mentioned above, the key feature that really distinguishes Ac motors from many other types of motors (the most famous being DC motors) is that they operate exclusively on alternating current. There are other differences, but this is the key to a basic understanding of how Ac motors work.
Alternating current or electric charge (usually abbreviated as AC, hence Ac motor) is an alternating current or electric charge that reverses the direction of flow around a circuit at regular intervals. (This characteristic of switching the direction of current also means that the voltage on the AC circuit will change periodically.) In contrast, DC or direct current flows only one way around the circuit, so the voltage on the DC circuit remains relatively constant.
AC current and extended Ac motors rely on a device called an alternator to produce this alternating charging direction. An alternator is a special type of generator in which, when current passes through a rotating shaft (rotor), an electromagnetic field (EMF) is usually generated, and the rotating shaft itself rotates in or in a set of static wire coils (stator) Spin. When the rotor rotates relative to the stator, the resulting electromotive force switches direction or polarity.
Since the EMF generated by the charged rotor rotating the fixed shaft will switch polarity at a set point relative to the stator, the periodic reversal of the direction of current in an Ac motor occurs at regular and predictable intervals. In fact, the alternator and current on the alternator behave a bit like a piston or paddle moving water around a pipe system-as the piston moves in and out at a constant speed, it pushes and then pulls the water back and forth through the pipe.
As mentioned earlier, another important difference between AC and DC motors is that Ac motors do not have any brushes. In a typical DC motor, the brushes directly conduct electricity from the mains power supply to the armature (generator assembly), which is why the DC motor is sometimes called a conduction motor.
On the contrary, some brushless Ac motors are usually taken as examples of induction motors, because the process of generating alternating charges from EMF through the rotor and stator is called (electromagnetic) magnetic induction.
Some of the most common industrial applications of Ac motors include: electrical appliances. Compressor drive and system. computer. Conveyor system. Fan and air conditioning. Hydraulic and irrigation pumps. Transportation Equipment.
Electric motors play a vital role in almost every industry. Using the correct type of motor with high-quality parts and conducting regular maintenance can make your equipment run smoothly and prevent damage to the terminal equipment due to wear or power surges.