The difference between three-phase asynchronous AC motor and DC motor

   date:2020-10-27     browse:3    comments:0    

A three-phase asynchronous motor is a type of induction motor that is powered by a 380V three-phase alternating current (120 degrees phase difference). The rotor and stator rotate due to the three-phase asynchronous motor. The magnetic field rotates in the same direction and at different rotational speeds, and there is a slip rate, so it is called a three-phase asynchronous motor. The rotation speed of the rotor of the three-phase asynchronous motor is lower than the rotation speed of the rotating magnetic field, and the rotor winding generates electromotive force and current due to the relative motion between the magnetic field and the magnetic field, and interacts with the magnetic field to generate electromagnetic torque to realize energy conversion. The Chaogang three-phase asynchronous motor is designed and produced on this principle. It is produced by high-quality silicon steel sheet and F-class insulated copper wire to optimize dynamic balance.

A DC motor (D.C.motor) is a motor that converts DC power and mechanical energy to each other. When it is used as a motor, it is a DC motor that converts electrical energy into mechanical energy; when the generator is running, it is a DC generator that converts mechanical energy into electrical energy.

The DC motor consists of two parts, a stator and a rotor, with a certain air gap. The main feature of its construction is that it has an armature with a commutator. The stator of the DC motor is composed of a base, a main magnetic pole, a commutating magnetic pole, front and rear end covers, and a brush holder. The main magnetic pole is the main component that generates the air gap magnetic field of the DC motor, and is composed of a permanent magnet or a laminated core with a DC excitation winding. The rotor of a DC motor is composed of an armature, a commutator (also called a commutator), and a rotating shaft. The armature is composed of two parts: an armature core and an armature winding. The armature core is formed by stacking silicon steel sheets with evenly distributed coggings at its outer circumference, and armature windings are embedded in these slots. The commutator is a mechanical rectifying component. After the commutator segments are stacked into a cylindrical shape, they are integrally formed by metal clips or plastic. The commutator segments are insulated from each other. Commutator quality has a large impact on operational reliability.

A three-phase asynchronous motor is a machine for converting mechanical energy and alternating current energy. Due to the tremendous development of AC power systems, AC motors have become the most commonly used motors. Compared with DC motors, AC motors have a simple structure, are easy to manufacture, and are relatively robust. They are easy to make motors with high speed, high voltage, high current and large capacity. AC motor power coverage is large. AC motors are generally classified into alternators, AC motors, and synchronous cameras according to their functions. Due to the reversible Henglin Seiko AC main shaft of the working state of the motor, the same motor can be used as both a generator and an electric motor. It is not very clear that the motor is divided into a generator and a motor. However, some motors mainly operate as generators, and some motors mainly operate as motors. Three-phase asynchronous motors are classified into ordinary motors, variable frequency motors, and brake motors.

 
Article Source: The difference between three-phase asynchronous AC motor and DC motor
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