Self-wind cooled rotor double-stator magneto resistance genus motor

Abstract

The invention relates to a double-stator reluctance motor with a self air-cooled rotor, and belongs to a reluctance motor. The motor comprises a rotor, an internal stator and an external stator, internal and external salient-pole teeth of the rotor and salient-pole teeth of the internal stator and the external stator are oblique teeth in a structural shape of an axial-flow fan blade, and the oblique teeth of the internal and external salient-pole teeth of the rotor in the structural shape of the axial-flow fan blade are decided by an air intake angle beta=tan<-1>C / U and an air outlet angle alpha=tan<-1>C / (U-C2u), wherein C is air intake absolute velocity, U is rim speed, C2u is equal to Lu / U, and Lu is rim power. In order to keep electrical property of the motor invariant, shapes of the salient-pole teeth of the internal stator and the external stator are matched with structures of the internal and external salient-pole teeth of the rotor. When the rotor of the motor rotates, the axial-flow fan blade structure of the internal and external salient-pole teeth of the rotor and the axial-flow fan blade structure of the salient-pole teeth of the internal stator and the external stator generate air suction force together to introduce the air inside the motor to be exhausted by an outlet, so as to take away heat of the rotor of the motor and achieve self air cooling. Therefore, the size of the motor can be optimized, and volume and weight of the motor can be reduced.

Description

technical field [0001] The invention relates to a self-air cooling rotor double-stator reluctance motor, including a switched reluctance motor, a double-salient motor, an induction motor, etc., and belongs to the technical field of motors. Background technique [0002] The reluctance motor realizes the conversion of electromechanical energy through the change of reluctance. Such motors mainly include switched reluctance motors, doubly salient motors, and induction motors. Taking the double salient pole motor as an example, the rotor is punched and laminated with silicon steel sheets, and there is a salient pole structure on the rotor, no winding, no brush, so this type of motor has the outstanding advantages of simple structure and reliable operation, especially suitable for Run at high speed. In addition, electrically excited doubly salient motors also have the advantage of relatively low excitation power, so doubly salient motors have broad application prospects in power...

AI Technical Summary

Problems solved by technology

However, since the reluctance motor realizes the conversion of electromechanical energy through the change of reluctance, and the magnetic flux of its stator and rotor are alternating, it has obvious eddy current loss and relatively low efficiency. obvious temperature rise

This will affect the life of the winding if it is light, and it will damage the winding if it is heavy, making the motor unable to run

The usual method is to reduce the current density of the winding, reduce the magnetic flux density of the magnetizer, and increase the external heat dissipation area to reduce the temperature rise, but this will increase the volume and weight of the motor and cause production waste.

This limits the scope of application of this type of motor, especially in high-power applications

Images