Self-wind cooled rotor magneto resistance genus motor

Abstract

The invention relates to a self air-cooled rotor reluctance motor, and belongs to a reluctance motor. The motor comprises a rotor and a stator, salient-pole teeth of the rotor and the stator are oblique teeth in a structural shape of an axial-flow fan blade, a cylindrical surface using high center of the salient-pole teeth of the rotor as a radius and a lateral surface of the salient-pole teeth form a spatial intersecting line, a curve expanded by the intersecting line on a plane figure expanded by the cylindrical surface is arc-shaped, and the arc-shaped curve is decided by an air intake angle and an air outlet angle. During design, loss of the motor rotor is determined according to a design manual of the motor, and the air intake angle is determined according to air intake absolute speed, rim speed and relative speed direction calculated by a speed triangle at an air intake end; and the air outlet angle is determined according to pneumatic design. The shape of the salient-pole teeth of the stator is decided by the salient-pole teeth of the rotor. The self air-cooled rotor reluctance motor is suitable for reluctance motors with various structures such as a double-salient-pole motor, a switched reluctance motor and an inductor motor. The self air-cooled rotor reluctance motor can automatically dissipate heat of the rotor of the reluctance motor, reduce volume and weight of the motor, and optimize the size of the motor.

Description

technical field [0001] The invention relates to a self-air cooling rotor reluctance motor, including a switched reluctance motor, a double salient pole 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 systems ...

AI Technical Summary

Problems solved by technology

[0003] However, because this type of motor realizes the conversion of electromechanical energy through the change of reluctance, especially the doubly salient pole motor, the magnetic flux of its stator and rotor is alternating, so it has obvious eddy current loss, and its efficiency is relatively low. Low temperature rise of stator and rotor

This will affect the life of the winding if it is light, and it will damage the winding if it is heavy.

The usual method is to reduce the current density of the winding, reduce the working flux density of the magnetic conductor, 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 waste.

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

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