What are the two main components of a three-phase asynchronous motor?
2 Answers
Three-phase asynchronous motors consist of a rotor part and a stator part. The stator part includes the frame, stator core, stator winding, end shields at both ends, terminal box, fan cover. The rotor part consists of the shaft, rotor core and squirrel cage, bearings, fan blades, etc. Here are the relevant introductions: 1. Working principle: The rotor speed of a three-phase asynchronous motor is lower than the speed of the rotating magnetic field. The relative motion between the rotor winding and the magnetic field induces electromotive force and current, which interacts with the magnetic field to generate electromagnetic torque, achieving energy conversion. 2. Classification: According to different rotor structures, three-phase asynchronous motors can be divided into squirrel-cage type and wound-rotor type. Squirrel-cage rotor asynchronous motors have simple structure, reliable operation, light weight and low cost, making them widely used. Their main disadvantage is difficulty in speed regulation.
As someone who frequently repairs cars, I have to say the structure of a three-phase asynchronous motor is actually quite simple, consisting of just a stator and a rotor. The stator is like the engine block, fixed on the outside and not moving, containing coil windings that generate a rotating magnetic field when electrified, driving the rotor to turn. The rotor is the central rotating shaft, much like a wheel bearing, pulled along by magnetic force. This is very common in cars, such as in electric power steering systems where this type of motor is used to control steering assistance. If the rotor bearings wear out, the car's steering will become heavier. During regular maintenance, it's important to check if the windings are burnt out, otherwise unstable current can easily damage the entire system. I recommend not tinkering with it yourself; if you encounter a fault, take it to a professional auto repair shop. After all, the motor is precisely designed and shouldn't be handled carelessly.
