Truncated-cone-shaped solid column type bearingless switched reluctance motor

Abstract

The invention discloses a truncated-cone-shaped solid column type bearingless switched reluctance motor which comprises a first stator, a first rotor, a second stator, a second rotor and a truncated-cone-shaped solid column. Each tooth pole of the first stator and each tooth pole of the second stator are correspondingly sleeved with a first radial exciting winding and a second radial exciting winding which are independently controlled, and each tooth pole of the first stator and each tooth pole of the second stator are connected with an axial exciting winding in series; a conical outer chamferstructure is arranged on the axial inner sides of the two stators; the first rotor tooth pole and the second rotor tooth pole form a 15-degree rotating mechanical angle difference; the first rotor, the second rotor and the truncated cone-shaped solid cylinder share one rotating shaft; an air gap length exists between the truncated cone-shaped solid cylinder and the outer chamfers of the two stators; when the first radial excitation winding and the second radial excitation winding conduct current, the first rotor and the second rotor provide radial suspension force, the axial excitation windings are conducted at the same time, the magnetic flux density in the stator tooth poles is controlled, the solid cylinder obtains a set of magnetic pull force, axial components in the set of magnetic pull force are extracted to achieve axial suspension control, and finally five-degree-of-freedom suspension is achieved.

Description

technical field [0001] The invention relates to a truncated cone-shaped solid column bearingless switched reluctance motor, which belongs to the technical field of magnetic suspension switched reluctance motors of motors. Background technique [0002] The motor is inseparable from the production process. With the increasing demand for turbo machinery 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 serious wear of mechanical bearings in high-speed operation. [0003] Common bearingless switched reluctance motors can only achieve four-degree-of-freedom suspension, but in turbomachinery, the axial bearing capacity is large, which brings challenges to the five-degree-of-freedom suspension of beari...

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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