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

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...

AI Technical Summary

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 current losses in the solid stator core and thrust disk, causing the stator and rotor to heat up, resulting in Thermal deformation affects the precision of the maglev rotor and even affects the normal operation of the rotor

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