A Frustoconical Solid Cylindrical Bearingless Switched Reluctance Motor

Abstract

The invention discloses a truncated conical solid cylinder bearingless switched reluctance motor, which comprises a first stator and a rotor, a second stator and a rotor, a truncated conical solid cylinder; each tooth pole of the first and second stators There are first and second radial excitation windings on the top, these windings are independently controlled, and the axial excitation windings are connected in series on each tooth pole of the first and second stators; there is a conical outer chamfer on the axial inner side of the two stators Structure; the tooth poles of the first and second rotors have a 15° rotation mechanical angle difference; the first and second rotors share a rotating shaft with the truncated conical solid cylinder, and the outer chamfers of the truncated conical solid cylinder and the two stators There is an air gap length between them, when the first and second radial field windings conduct current, the first and second rotors provide radial levitation force, and at the same time the axial field windings conduct to control the magnetic flux in the stator teeth Density, so that the solid cylinder obtains a set of magnetic pulling force, and extracts the axial component of this set of magnetic pulling force to realize axial levitation control, and finally realizes five-degree-of-freedom levitation.

Description

technical field [0001] The invention relates to a truncated conical solid column bearingless switched reluctance motor, which belongs to the technical field of magnetic levitation switched reluctance motors. Background technique [0002] The production process is inseparable from the motor. With the increasing demand for turbomachinery applications such as compressors and centrifugal molecular pumps, the development of high-speed motors is both an opportunity and a challenge. Bearingless switched reluctance motors bring opportunities for their development because they can achieve reliable operation, reduce costs, increase power density, and overcome the problem of severe wear of mechanical bearings during high-speed operation. [0003] Common bearingless switched reluctance motors can only achieve four-degree-of-freedom levitation, but in turbomachinery, the bearing capacity in the axial direction is relatively large, which poses a challenge for bearingless switched reluctan...

AI Technical Summary

Problems solved by technology

The existing solution to the five-degree-of-freedom levitation bearingless switched reluctance motor is to add an axial magnetic bearing and a supporting controller. Although the function meets the requirements, the volume and cost of the entire system increase, and it also brings complicated control. The problem

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