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Main structure of electric motors
Oct 31, 2018

The structure of a three-phase asynchronous motor consists of a stator, a rotor and other accessories.

  1. Stator core: The stator core is generally formed by laminating and laminating a silicon steel sheet having an insulating layer on the surface of 0.35 to 0.5 mm thick, and a uniformly distributed groove is punched in the inner circle of the core for embedding the stator winding.

  2. Stator winding: It is made up of three identical windings which are arranged in a space of 120° electrical angle and symmetrically arranged. The respective coils of these windings are respectively embedded in the slots of the stator according to a certain law.

  3. Machine base: The base is usually cast iron, and the large asynchronous motor base is usually welded with steel plates. The base of the micro motor is made of cast aluminum. There is a heat dissipation rib on the outer surface of the closed motor to increase the heat dissipation area. The end caps of the protective motor have ventilation holes at both ends, so that the air inside and outside the motor can be directly convected to facilitate heat dissipation.

    AC motor