Armature winding should be installed on it. When electrified, it will generate induced electromotive force as a rotating magnetic field, and then generate electromagnetic torque for energy conversion. Stator winding can be divided into centralized type and distributed type according to the shape and embedding mode of coil winding.
Stator and rotor are necessary parts of motor. The stator is fixedly installed on the shell, and usually, the coil is wound on the stator. The rotor is installed and fixed on the machine base through bearings or shaft sleeves. There are silicon steel sheets and coils on the rotor. Under the action of the coil, the current will generate a magnetic field on the silicon steel sheets of the stator and rotor, thus driving the rotor to rotate.
Extended data
Stator composition
Stator is composed of frame, stator core, coil and other structural parts for fixing these parts. The frame is used to fix the iron core, and for the suspended generator, the frame is used to bear the full weight of the rotating part; The iron core is a part of the generator magnetic circuit; The coil forms the circuit of the generator.
1, framework
The frame is generally cast iron, the frame of large asynchronous motor is generally welded with steel plate, and the frame of micro motor is cast aluminum. There are cooling ribs outside the frame of the enclosed motor to increase the cooling area, and the end covers at both ends of the frame to protect the motor have ventilation holes, so that the air inside and outside the motor can directly convection, which is beneficial to heat dissipation.
The main function of the generator base is as the supporting structure of the stator core lamination, which bears the torque of the stator and transmits it to the base; It constitutes the channel of cooling gas and the supporting structure of bearing, frame and cooler.
2. Stator core
Stator core is the main magnetic circuit of stator and the installation and fixing part of stator winding. The stator core consists of fan-shaped punching sheet, ventilation slot sheet, toothed pressure plate, tension bolt, support block, positioning rib and other parts.
3. Volume
The stator winding of large hydro-generator mostly adopts strip coil (also called bar) double-layer wave winding, which is characterized by few end connections and convenient disassembly and replacement. For water-cooled generators, you can also choose single-layer wave winding, which can simplify the cooling water pipeline.
Baidu Encyclopedia-Stator and Rotor