Double sheet type five-degree-of-freedom bearing-free switched reluctance motor

Abstract

The invention discloses a double sheet type five-degree-of-freedom bearing-free switched reluctance motor. The motor comprises a stator and a rotor, wherein the rotor consists of a rotating shaft androtor cores, rotor teeth are arranged on the edges of the rotor cores, the two rotor cores are arranged in parallel at an interval, the stator comprises two annular stator cores, four suspension teethare uniformly arranged on the inner ring of each stator core, a plurality of torque teeth are uniformly arranged on the inner ring, between two adjacent suspension teeth, of each stator core, and suspension windings and torque windings wind around the suspension teeth and the torque teeth respectively; outer rings of the two stator cores are uniformly connected with a plurality of magnetic conductive bridges, and the magnetic conductive bridges connected to the two stator cores are connected through permanent magnets in a one-to-one correspondence manner; the two rotor cores are coaxially arranged in inner cavities of the two stator cores respectively, and the rotor teeth of each rotor core and the suspension teeth and torque teeth of the corresponding stator core are spaced to form radial work air gaps.

Description

technical field [0001] The invention relates to the technical field of motor manufacturing, in particular to a double-sheet type 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, fault tolerance and robustness, and has broad application prospects in the fields of electric vehicles, aerospace, and household appliances. ...

AI Technical Summary

Problems solved by technology

In addition, to realize the stable suspension of the rotor with five degrees of freedom, any combination of axial single-degree-of-freedom magnetic bearings, radial two-degree-of-freedom magnetic bearings, three-degree-of-freedom radial-axial magnetic bearings, and two-degree-of-freedom bearingless switched reluctance motors must be used. The five-degree-of-freedom bearingless switched reluctance motor drive system is bulky, has a long axial length, and has a 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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