Outer-rotor five-degree-of-freedom non-bearing switch reluctance motor

Abstract

The invention discloses an outer-rotor five-degree-of-freedom non-bearing switch reluctance motor. The motor comprises a shared inner stator and a shared outer rotor, the shared inner stator is composed of a left stator iron core, a permanent magnet ring and a right stator iron core which are in serial connection with a magnetic insulation shaft in sequence, four suspension teeth are arranged at the edge of the left stator iron core in the x and y directions, and four suspension teeth are arranged at the edge of the right stator iron core in the x and y directions; multiple torque teeth are further connected between every two adjacent suspension teeth through magnetic insulation blocks, and suspension windings and torque windings wind the suspension teeth and the torque teeth respectively;the shared outer rotor is composed of a left rotor iron core and a right rotor iron core which are fixedly connected to a magnetic conduction shell, the left rotor iron core and the right rotor ironcore are coaxially arranged at the radial outer sides of the left stator iron core and the right stator iron core at intervals respectively, and multiple rotor teeth are arranged on the inner circumferences of both the left rotor iron core and the right rotor iron core.

Description

technical field [0001] The invention relates to the technical field of motor manufacturing, in particular to an outer rotor five-degree-of-freedom bearingless switched reluctance motor. Background technique [0002] Bearingless motors have no friction, no wear, no lubrication and no seals, 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 electric spindles, etc. . Bearingless motors are mainly divided into three types: 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, and household appliances. ...

AI Technical Summary

Problems solved by technology

And in order to realize the stable suspension of the rotor with five degrees of freedom, it is necessary to use axial single-degree-of-freedom magnetic bearings, radial two-degree-of-freedom magnetic bearings and two-degree-of-freedom bearingless switched reluctance motors to form a five-degree-of-freedom bearingless drive system, which is bulky. The axial length is long and the critical speed is high, which makes it difficult to realize the advantages of high speed and high power density of bearingless motor technology

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