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High-power high-speed magnetic suspension permanent magnet motor

A permanent magnet motor and magnetic levitation technology, which is applied in the direction of electromechanical devices, electrical components, electric components, etc., to achieve the effect of high power, no reduction box, and high speed

Inactive Publication Date: 2021-01-19
CRRC YONGJI ELECTRIC CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a high-power high-speed magnetic suspension permanent magnet motor in order to solve the problems of the design of the rotor structure of the high-power high-speed permanent magnet motor under high-speed operation, the structural layout and realization of the high-speed and high-power magnetic suspension bearing, and the design of the high-efficiency cooling air circuit.

Method used

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  • High-power high-speed magnetic suspension permanent magnet motor
  • High-power high-speed magnetic suspension permanent magnet motor

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Embodiment Construction

[0020] High-power high-speed magnetic levitation permanent magnet motor is mainly composed of stator core and stator coil stator assembly 4, including rotating shaft, permanent magnet, motor rotor core, carbon fiber sheath, radial magnetic levitation bearing core at the transmission end, and radial magnetic levitation bearing core at the non-drive end , the rotor assembly 5 composed of the sensor core at the drive end, the sensor core at the non-drive end, the thrust disc 19 and the resolver rotor core, the front end cover system composed of the front auxiliary bearing 1, the sensor 14 at the drive end and the radial magnetic suspension bearing 2 at the drive end, The rear end cover system consisting of the rear auxiliary bearing 11, the non-drive end cover 6, the non-drive end radial magnetic suspension bearing 7, the axial magnetic suspension bearing 20, the resolver 12 and the resolver end cover 13, the main junction box 16 and the control Line junction box 17 is formed.

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Abstract

The invention relates to a high-power high-speed motor, in particular to a high-power high-speed magnetic suspension permanent magnet motor. In the motor, an active magnetic suspension bearing is adopted and is composed of two radial bearings, an axial bearing and two position sensors. Meanwhile, the auxiliary bearings are installed at the transmission end and the non-transmission end respectively, active control can be achieved, the dynamic performance of the shafting can be adjusted within the whole rotating speed range, contact is completely avoided, lubrication is not needed, and the service life is long. In the motor, by the adoption of the active magnetic suspension bearing, overall loss can be reduced, a cooling device is omitted, the overall service life is prolonged, and maintenance is convenient. The high-power high-speed magnetic suspension permanent magnet motor has the characteristics of high rotating speed, high power, elimination of a reduction gearbox and the like; theservice life, reliability, noise and vibration are greatly improved; the electrical and mechanical structures are reliable.

Description

technical field [0001] The invention relates to a high-power high-speed motor, in particular to a high-power high-speed magnetic levitation permanent magnet motor. Background technique [0002] Compared with the traditional non-direct drive system, after adopting high-speed motor direct drive, the volume and weight of the transmission system are significantly reduced, and the service life, reliability, noise and vibration are greatly improved. Therefore, the high-speed motor plays an important role in energy storage. Flywheels, compressors, high-speed blowers, high-speed water pumps, and distributed power generation systems have a wide range of applications in various industrial fields. However, with the increase of power and speed, the use of traditional ball bearings is becoming more and more difficult to meet, and the rotor is getting closer to the critical speed due to the influence of its stiffness coefficient, and even does not bear the rigidity of the rotor. At the sa...

Claims

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Application Information

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IPC IPC(8): H02K7/09H02K5/16H02K11/21H02K11/215H02K9/00H02K1/20H02K1/32H02K5/20
CPCH02K1/20H02K1/32H02K5/161H02K5/20H02K7/09H02K9/00H02K11/21H02K11/215
Inventor 程铭贺志学丁涛靳宏杰
Owner CRRC YONGJI ELECTRIC CO LTD
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