Five degree-of-freedom bearingless switch reluctance motor

Abstract

The invention discloses a five degree-of-freedom bearingless switch reluctance motor. The five degree-of-freedom bearingless switch reluctance motor comprises a common stator and a common rotor; the common rotor is composed of a laminar motor rotor iron core and a laminar magnetic bearing rotor iron core which are connected to a rotating shaft, and rotor tooth is arranged on the circumference of the motor rotor iron core; the common stator comprises a laminar motor stator iron core and a laminar magnetic bearing stator iron core which are arranged at the radial outsides of the motor rotor ironcore and the magnetic bearing rotor iron core at intervals; suspending teeth is respectively arranged at the inner circumference of the motor stator iron core and the magnetic bearing stator iron core, a suspending winding is wound on the suspending tooth, and the torque tooth is further arranged between the adjacent motor suspending teeth; the suspension tooth is longer than the torque tooth, atorque winding is wound on the torque tooth, the outer circumferences of the motor stator iron core and the magnetic bearing stator iron core are respectively connected with a motor magnetic-conductive bridge and a magnetic bearing magnetic-conductive bridge corresponding to the motor suspending tooth and the magnetic bearing suspending tooth, and the motor magnetic-conductive bridge and the magnetic bearing magnetic-conductive bridge are connected in one-to-one corresponding way through a permanent magnet block.

Description

technical field [0001] The invention relates to the technical field of motor manufacturing, in particular to a five-degree-of-freedom bearingless switched reluctance motor. Background technique [0002] Bearingless motors have no friction, wear, lubrication and sealing, and are easy to achieve higher speed and higher power operation. They have broad application prospects in aerospace, turbomolecular pumps, flywheel energy storage, sealed pumps, high-speed motorized spindles and other fields. . Bearingless motors are mainly divided into bearingless asynchronous (induction) motors, bearingless permanent magnet synchronous motors and bearingless switched reluctance motors. In particular, the bearingless switched reluctance motor has the advantages of simple structure, high mechanical strength, flexible control, good fault tolerance and good robustness, and has broad application prospects in electric vehicles, general industries, household appliances and other fields. [0003]...

AI Technical Summary

Problems solved by technology

And in order to achieve the stable suspension of the rotor with five degrees of freedom, it is necessary to use an axial single-degree-of-freedom magnetic bearing, a radial two-degree-of-freedom magnetic bearing, a three-degree-of-freedom radial-axial magnetic bearing and a two-degree-of-freedom bearingless switched reluctance motor. The five-degree-of-freedom bearingless drive system has a large volume, long axial length, and high critical speed, which makes it difficult to reflect the advantages of high speed and high power density of bearingless motor technology

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