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Permanent magnet synchronous motor supported by magnetic bearing and magnetic bearing thereof

A technology for permanent magnet synchronous motors and magnetic bearings, applied in synchronous machines, magnetic circuits, electromechanical devices, etc., can solve the problems of complex shaft manufacturing, large number of bearings, and low integration, and achieve compact structure, high transmission efficiency, Effects of avoiding mechanical contact

Pending Publication Date: 2020-09-04
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are problems such as large number of bearings, complex structure, low integration, and complex shaft processing and manufacturing.

Method used

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  • Permanent magnet synchronous motor supported by magnetic bearing and magnetic bearing thereof
  • Permanent magnet synchronous motor supported by magnetic bearing and magnetic bearing thereof
  • Permanent magnet synchronous motor supported by magnetic bearing and magnetic bearing thereof

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Embodiment Construction

[0030] The present invention will be further described below in conjunction with the accompanying drawings.

[0031] A permanent magnet synchronous motor supported by a magnetic bearing includes a motor mounting base 1, a motor shaft 2 and a magnetic bearing 3, the motor shaft 2 is mounted in the motor mounting base 1 in rotation, and magnetic bearings 3 are installed at both ends of the motor shaft 2. A bearing mounting part 4 is installed on the motor mounting base 1, and a magnetic bearing 3 is mounted on the bearing mounting part 4. The magnetic bearing 3 adopts a double flux chain circuit, and the permanent magnet flux chain bears the load and load of the high-speed shaft and the parts on the shaft; the coil The magnetic circuit controls the load fluctuation of the high-speed shaft and improves the stability of the high-speed shaft.

[0032] The bearing mounting part 4 includes mounting blocks 5 arranged oppositely in pairs. The mounting block 5 is dug with a bearing limi...

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Abstract

The invention discloses a permanent magnet synchronous motor supported by a magnetic bearing and the magnetic bearing thereof. The motor comprises a motor mounting base, a motor shaft and a magnetic bearing, the motor shaft is rotatably mounted in the motor mounting base, the magnetic bearings are mounted at the two ends of the motor shaft, and the bearing mounting piece is mounted on the motor mounting base. The magnetic bearings are mounted on the bearing mounting piece, the magnetic bearings adopt a double-flux loop a permanent magnet flux linkage bears the loads of a high-speed shaft and the components on the shaft, and a coil magnetic circuit controls the load fluctuation of the high-speed shaft, thereby improving the stability of the high-speed rotating shaft.

Description

technical field [0001] The invention belongs to the field of synchronous motors, in particular to a permanent magnet synchronous motor supported by a magnetic bearing and a magnetic bearing thereof. Background technique [0002] During the rotation of the high-speed spindle, due to the high speed, ordinary bearings will heat up significantly. When the thermal stress generated by friction exceeds the speed limit of the bearing, it will easily cause structural failure and reduce reliability. The use of non-contact magnetic suspension bearing and air bearing system has become an alternative solution to reduce mechanical friction and wear, energy loss, and increase the operating speed of the system. [0003] The use of magnetic bearings to support the rotating spindle can further reduce the length of the spindle, increase the critical speed of the spindle, better control the stability of the spindle, and improve the utilization rate of electric energy. With the development of p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K7/09H02K1/18H02K3/28H02K3/46H02K1/22H02K1/28H02K21/38
CPCH02K1/185H02K1/22H02K1/28H02K3/28H02K3/46H02K7/09H02K21/38
Inventor 李志鑫
Owner ZHEJIANG UNIV OF TECH
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