High-torque-density magnetic suspension motor

By designing a separate rotor structure and a temperature sensor-controlled heat dissipation system in a magnetic levitation motor, the problems of low torque density and eddy current phenomena are solved, and efficient and stable motor operation is achieved.

CN119742963AActive Publication Date: 2025-04-01BEIJING GAOFU POWER TECH CO LTD
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Patent Information

Application Number
CN202510244576.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-03-03
Publication Date
2025-04-01
Estimated Expiration
2045-03-03

AI Technical Summary

Technical Problem

The torque density of existing magnetic levitation motors is low, mainly due to the large weight of the rotor and the eddy current phenomenon caused by the heat dissipation fan, which affects the operating efficiency and stability of the motor.

Method used

By designing the rotor disk and the rotor shaft into a separate structure, rapid disassembly and installation is achieved, and a support frame is set between the rotor disk and the connecting sleeve, so that the interior of the motor rotor is hollowed out and the weight is reduced. At the same time, a heat dissipation system controlled by temperature sensors is used to avoid the occurrence of eddy current phenomenon.

Benefits of technology

It improves the torque density and response speed of the motor, reduces additional energy consumption, and ensures the operating efficiency and stability of the motor.

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Abstract

The invention discloses a high-torque-density magnetic suspension motor which comprises a shell, a rotor shaft and two magnetic suspension bearings, a front end cover and a rear end cover are mounted at the front end and the rear end of the shell respectively, and the rotor shaft is coaxially and rotatably connected to the interiors of the front end cover and the rear end cover through the two magnetic suspension bearings respectively. A rotor assembly is installed in the machine shell. The rotor disc and the rotor shaft are designed to be of a separated structure, the motor rotor can be rapidly disassembled and assembled, maintenance of the motor rotor is facilitated, the supporting frame is arranged between the rotor disc and the connecting shaft sleeve, the interior of the motor rotor can be in a hollowed-out state, through the design, the weight of the motor rotor is effectively reduced, and the service life of the motor rotor is prolonged. When the rotor rotates, the response speed is improved, and meanwhile the torque density of the magnetic suspension motor is improved.
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