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How to make an AC motor?

Apr 28,2023 | Guangri

To know how to make an AC motor, you first need to understand its structure.

The AC motor is mainly composed of the following parts:

  1. Stator: The stator consists of a set of coils wound around an iron core. When current passes through the stator coils, a rotating magnetic field is generated with a frequency equal to the frequency of the power supply.
  2. Rotor: The rotor is the rotating part of the motor, generally composed of iron core and coil. When the rotating magnetic field passes through the rotor coil, an AC electromotive force is generated, which makes the rotor rotate.
  3. Frequency converter: The frequency converter is an electronic device used to control the output power and speed of AC motors.
  4. Controller: The AC motor controller is used to control the start and stop, speed, direction and other functions of the motor. Common controllers include PLC, motor driver, etc.
  5. Case: The case is used to protect the parts inside the motor and reduce the noise of the motor.
  6. Compressor: Compressor is an important area of AC motor application. The AC motor drives the compressor rotor to compress low-pressure gas into high-pressure gas for storage and use.
  7. Cooling system: The AC motor will generate heat during operation, and a cooling system is needed to dissipate heat. Common cooling systems are air-cooled and water-cooled.


So, how to make an AC motor? Building an AC motor requires some knowledge and practical experience as an electrician.

Here are the simple steps to make it:


  1. Wire
  2. Copper wire
  3. Power core
  4. Insulation tape
  5. Magnets


  1. Prepare the power iron core and copper wire, and wrap the copper wire around the power iron core.
  2. Connect the copper wires at both ends to the power supply, one to the positive pole and one to the negative pole.
  3. Wind a coil of wire around the drive core, which is the stator part of the motor.
  4. Secure the wires on the stator with insulating tape.
  5. Attach the magnet to the drive core so that it can rotate.
  6. When current is passed through the wire, the magnet rotates and creates an electric field. This electric field interacts, causing the power core to rotate.

It should be noted that this is only a simple realization of the principle, and the manufacture of the motor also needs to consider factors such as the speed and the size of the electromagnetic field, and it needs to be debugged and tested at the same time. If there is no relevant practical experience, it is recommended to make it under the guidance of professionals.