The stator is a motor oralternatorA stationary part.Stator consists of statorIron coreStatorwindingandStandIt consists of three parts.[1]The stator is used to generate a rotating magnetic field.[3]
The stator is the stationary part of the motor.The stator consists of stator core, stator winding and frame.[1]The stator is used to generate a rotating magnetic field.[3]
Motor stator
stator[2]
stator[2]
stator[2]
Stator composition
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The stator is composed of the base, stator core, coil and other structural parts that fix these parts.The frame is used to fix the iron core. For the suspended generator, the frame is used to bear the full weight of the rotating part;The iron core is a generatormagnetic circuitPart of;The coil forms the circuit of the generator.[1]
Stand
The base is usuallyIron castings, largeasynchronous motorThe base is generally welded with steel plate,MicromotorThe engine base of is made of cast aluminum.There are radiating ribs outside the frame of the enclosed motor to increase the heat dissipation area, and the end covers at both ends of the frame of the protective motor are provided with ventilation holes, so that the air inside and outside the motor can be directly convection to facilitate heat dissipation.
The generator frame is mainly used as the supporting structure of stator core lamination to bear thetorqueAnd pass it to the foot;Channel constituting cooling gasBearing, rack andcoolerThe supporting structure of.
Stator core
The stator core is the main magnetic circuit of the stator, and is also the installation and fixing component of the stator winding.The stator core consists of sector punching, ventilation slot, tooth pressing plate, tension bolt, support blockLocating barAnd other components.
coil
largeHydro generatorMost of the stator windings of are bar coils (also called bars) with double wave windings. The bar wave windings are characterized by less end connections and easy replacement.For water-cooled generators, single-layer wave windings can also be selected, which can simplify the cooling water pipeline.
The stator has two connection modes, one is 4-wire type, the rotor is connected between two stator windings in series, the other is 2-wire type, and the two stator windings are connected withrotorAfter serial connection, connect it with the rotor in series (connect the two lead wires of 4-wire diagonal type together).The two wiring modes are different, but they can be common.There are two ways of lead wire: one isFlexible cordExport;One is led out by the connector on the skeleton, and the skeleton shall be retained during winding.[1]
Common faults
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Common faults of stator include open circuit of windingshort circuit、GroundingPoor contact between tension spring and brush holderdrag springBurn out, loose stator fixing bolts, etc.[1]
Components and principle
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Generator power is one of the most important energy sources in modern society.The generator is a mechanical equipment that converts other forms of energy into electrical energy. It was first produced inThe Second Industrial RevolutionPeriod, German engineersSiemens?It was made in 1866. It is composed of water turbineSteam turbine, diesel engine or other power machinery to convert the energy generated by water flow, air flow, fuel combustion or nuclear fission into mechanical energy and then into electrical energy.[1]
Working principle: the generator is mainly composed of stator, rotor, end coverbrush, frame, bearing and other components.The stator is composed of the base, stator core, wire wrapped winding and other structural parts that fix these parts.The rotor is composed of rotor iron core, rotor magnetic pole (with magnetic choke and magnetic pole winding), slip ring (also called copper ring and collector ring), fan, shaft and other parts.The stator and rotor of the generator are connected and assembled through the bearing, the base and the end cover, so that the rotor can rotate in the stator, and a certainexcitation current The rotor becomes a rotating magnetic field, and the stator coil moves to cut the magnetic line of force, thus generating an induced potential, which is led out through the terminal block and connected to the circuit, thus generating current.Because there is a circuit break at the connection between the brush and the rotor, the rotor rotates in a certain direction and generates alternating current, so alternating current is used in household circuits and other circuits, referred to as alternating current.The frequency of output current of China's power grid is 50 Hz.[1]
