Magnetic suspension ring rotor structure for aviation shaftless rim electric propulsion

Abstract

The invention belongs to the technical field of aviation electric propulsion, and relates to a magnetic suspension ring rotor structure for aviation shaftless rim electric propulsion, which comprises a ring rotor (1), an axial magnetic bearing (2), a radial magnetic bearing (3), a rotor magnet yoke (4), a locking ring structure (5) and a fan assembly (6), magnetic suspension supporting is formed between the radial magnetic bearing (3) and the rotor magnet yoke (4), and the requirements for loss reduction and noise reduction of high-speed rotor rotation of aviation shaftless rim electric propulsion are met. The axial length of the ring rotor (1) is short, a thrust disc is small, and the critical rotating speed of the rotor under the action of the magnetic suspension bearing can be improved; the main body of the ring rotor (1) is made of a graphene composite reinforced aluminum-based material, so that the structural weight of the ring rotor (1) is effectively reduced, and the design difficulty of the radial magnetic bearing (3) is reduced; the rotor magnet yoke (4) is made of a high-strength amorphous alloy material, so that the use of a rotor protection sleeve is avoided, and the target of further weight reduction is achieved; the ring rotor (1) and the fan assembly (6) are integrally designed, and the fan assembly (6) is disassembled and assembled through the locking ring structure (5). According to the structure, the quality and speed characteristics of the shaftless rim electric propulsion high-speed rotor are improved, and the reliability of an aviation shaftless rim electric propulsion system is improved.

Description

[0001] Technical field [0002] The invention belongs to the technical field of aviation electric propulsion, and more particularly relates to a magnetic suspension ring rotor structure for aviation shaftless wheel rim electric propulsion. Background technique [0003] Facing the development goals of high power and high power density of aircraft, the size, strength and mass requirements of the propulsion system for the propulsion system have also increased. The aviation shaftless rim thruster cancels the complex transmission shafting and closed system in the traditional thruster, improves the flexibility of the thruster layout, and the integration and integration of the propulsion device can effectively reduce the structural mass. [0004] For wheel rim thrusters, conventional rolling bearing supports are subject to great wear and noise in the higher rotational speed range, limiting the speed performance of the rim thrusters. The non-contact magnetic bearing has the character...

AI Technical Summary

Problems solved by technology

[0007] In order to solve the problems of low rotor speed, overweight rotor and low tensile strength of rotor yoke material in high-speed aviation rim electric propulsion devices, the present invention proposes a magnetic levitation ring rotor structure for aviation shaftless rim electric propulsion. One side of the ring rotor Thrust disc and two radial yokes are designed to efficiently couple the ring rotor with the magnetic suspension support system; the control magnetic flux is generated by the support control winding, and the amorphous alloy material is used as the rotor yoke to realize the magnetic suspension between the ring rotor and the radial magnetic bearing. Road coupling, to achieve magnetic suspension support, so that the rotor has low friction and noise at high speeds, reduces the axial size and quality of the ring rotor, and enables the ring rotor to work stably under high speed conditions

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