Laminated core type single-collar two-coil redundant axial direction magnetic bearing

A magnetic levitation bearing and laminated iron core technology, applied in the field of axial support, can solve the problems of stator and rotor heating, thermal deformation, large eddy current loss of solid stator core and thrust plate, etc., to reduce eddy current loss and reduce eddy current Loss, the effect of improving reliability

Inactive Publication Date: 2017-02-22
WUHAN UNIV OF TECH
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  • Abstract
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  • Claims
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Problems solved by technology

[0003] Due to the structural characteristics of axial magnetic suspension bearings, the stator core material usually adopts a solid structure, and the high-frequency current in the control current will cause large eddy cu

Method used

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  • Laminated core type single-collar two-coil redundant axial direction magnetic bearing
  • Laminated core type single-collar two-coil redundant axial direction magnetic bearing
  • Laminated core type single-collar two-coil redundant axial direction magnetic bearing

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Embodiment Construction

[0026] The laminated core type single-ring double-coil redundant axial magnetic suspension bearing provided by the present invention is mainly composed of U-shaped silicon steel lamination parts, lamination base, coil, thrust disc, rotor and hexagon socket flat end set screw , wherein: the thrust disc and the rotor are connected as a whole with an interference fit. The lamination bases of the two magnetic suspension bearings are respectively located on both sides of the thrust plate. Each lamination base has 12 trapezoidal grooves with the same structure evenly distributed along the circumferential direction, each trapezoidal groove is axially embedded with U-shaped silicon steel sheet lamination parts and fixed with set screws. Two groups of coils with the same number of turns are wound axially in parallel on a ring composed of 12 groups of U-shaped silicon steel laminations.

[0027] The present invention will be further described below in conjunction with the embodiments a...

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Abstract

The invention discloses a laminated core type single-collar two-coil redundant axial direction magnetic bearing. According to the structure of the laminated core type single-collar two-coil redundant axial direction magnetic bearing, multiple sets of U-shaped silicon steel sheet laminated components (1) are inlaid in the circumferential direction of a laminated base (2) in the axial direction and fixed through hexagon socket set screws (6) with flat points; and two sets of coils (3) with the same number of turns are connected in parallel in the axial direction and wound on a circular ring composed of the twelve U-shaped silicon steel sheet laminated components. Compared with existing design, the problem that a silicon steel sheet lamination way cannot be adopted for the integral axial direction magnetic bearing is solved, so that the eddy-current loss of the axial direction magnetic bearing is reduced, and the temperature rise of the axial direction magnetic bearing is reduced. Due to the redundant design of the two sets of coils, the axial direction magnetic bearing has analytical redundancy, and working reliability of the axial direction magnetic bearing is improved.

Description

technical field [0001] The invention relates to a laminated iron core type single-ring double-coil redundant axial magnetic suspension bearing, which is mainly used for the axial support of a magnetic suspension rotor. Background technique [0002] Magnetic suspension bearing is a new type of bearing, which uses electromagnetic suspension to suspend the rotor, so as to realize the non-contact support of the rotor. Compared with mechanical bearings, magnetic suspension bearings have the advantages of no contact, no wear, long life, no lubrication, low noise, etc., which fundamentally change the traditional support form and have become an irreplaceable support technology in some application fields. With the continuous expansion of the application of magnetic suspension bearing technology, higher requirements are put forward for the reliability and fault tolerance of the magnetic suspension bearing system. At present, a conventional five-degree-of-freedom magnetic suspension r...

Claims

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Application Information

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IPC IPC(8): F16C32/04
CPCF16C32/0461F16C32/0476F16C32/0474
Inventor 胡业发陈昌皓王晓光吴华春程鑫
Owner WUHAN UNIV OF TECH
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