A three-phase asynchronous motor is an AC electric motor in which the stator windings are arranged in three phases. The main advantage of a three-phase asynchronous motor is that it is very robust and can be operated at high speeds.
What role does the stator plate package of a three-phase asynchronous motor play?
What is the maintenance method of the three-phase asynchronous motor?
What is the definition of asynchronous motor?
What role does the stator plate package of a three-phase asynchronous motor play?
Function: Part of the magnetic circuit of the motor and on which the stator windings are placed.
Structure: The stator core is generally punched and laminated by 0.35 to 0.5mm thick silicon steel sheets with insulating layers on the surface, and evenly distributed slots are punched into the inner circle of the core to embed the stator windings.
The stator core slot types are as follows:
Semi-closed groove: The efficiency and power factor of the motor are high, but winding and insulation are difficult. Generally used in small low voltage motors.
Semi-open slot: It can be embedded with molded windings and is generally used for large and medium low voltage motors. The so-called shaped winding means that the winding can be insulated in advance and then inserted into the groove.
Open slot: It is used for inserting and placing molded windings, and the insulation method is convenient. It is mainly used in high voltage motors.
What is the maintenance method of the three-phase asynchronous motor?
Continuous three-phase asynchronous motor, daily maintenance content: visual check whether the fan is working normally, whether there are unusual vibrations, whether the coupling connection is reliable, whether the base is tight, whether the bearing is working normally (listen to the noise) and whether the temperature is normal (infrared thermometer), Regularly check the cable connections and switching contacts to make sure that the working current is normal (pliers imperemeter), and also check the carbon brush and slip ring of the wound motor.
What is the definition of asynchronous motor?
asynchronous motor is some kind of induction motor. It is a type of motor that operates simultaneously with 380 V three-phase current (120° phase difference). Since the rotating magnetic field of the three-phase asynchronous motor and the stator rotate in the same direction and at different speeds, a slip rate is created, which is why we speak of a three-phase asynchronous motor. The rotational speed of the three-phase asynchronous motor rotor is lower than the rotating magnetic field speed. The rotor winding generates electromotive force and current due to the relative movement between the rotor winding and the magnetic field, and interacts with the magnetic field to generate an electromagnetic torque to realize an energy conversion.
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