Three-degree-of-freedom mixing conical and radial magnetic bearing

A magnetic bearing, degree of freedom technology, applied in the direction of bearings, shafts and bearings, shafts, etc., can solve the problems of increased critical speed, difficult processing and assembly, large thrust plates, etc., to achieve good fault tolerance, less control variables, control simple effect

Active Publication Date: 2017-09-15
南京埃克锐特机电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the traditional permanent magnet bias hybrid magnetic bearing with three-degree-of-freedom suspension function requires a large thrust plate, which makes its processing and assembly difficult, and also limits the further improvement of its critical speed
In addition, due to the existence of both axial and radial magnetic circuits in the thrust plate, there is coupling between the axial levitation force and the radial levitation force, which is not conducive to the levitation control during high-speed operation, and will reduce the efficiency of levitation control. precision

Method used

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  • Three-degree-of-freedom mixing conical and radial magnetic bearing
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  • Three-degree-of-freedom mixing conical and radial magnetic bearing

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Embodiment Construction

[0026] The technical scheme of a three-degree-of-freedom hybrid conical radial magnetic bearing of the present invention will be described in detail below in conjunction with the accompanying drawings:

[0027] Such as figure 1 Shown is a three-dimensional structural schematic diagram of a three-degree-of-freedom hybrid conical radial magnetic bearing embodiment 1 of the present invention, wherein, 1 is a radial stator, 2 is a radial rotor, 3 is a radial coil, and 4 is a radial Stator magnetic ring, 5 is permanent magnet, 6 is conical stator Ⅰ, 7 is conical stator Ⅱ, 8 is conical rotor Ⅰ, 9 is conical rotor Ⅱ, 10 is axial suspension winding, 11 is conical stator Magnetic ring, 12 is a rotor magnetic ring, 13 is a rotating shaft, 14 is a radial magnetic bearing, and 15 is a tapered magnetic bearing.

[0028] A three-degree-of-freedom hybrid conical radial magnetic bearing, comprising a radial magnetic bearing, a conical magnetic bearing and a permanent magnet, wherein the radi...

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Abstract

The invention discloses a three-degree-of-freedom mixing conical and radial magnetic bearing, and belongs to the field of magnetic suspension bearings. The three-degree-of-freedom mixing conical and radial magnetic bearing is composed of a radial magnetic bearing body and a conical magnetic bearing body; an axial magnetization annular permanent magnet or annular bias winding is arranged between the radial magnetic bearing body and the conical magnetic bearing body to provide biased magnetic flux; a radial magnetic bearing stator is of a salient pole structure and provided with four teeth; each stator tooth is wound with a coil, and every two coils are connected to form two radial suspension windings; a rotor is of a cylinder structure; the conical magnetic bearing body comprises two conical stators and two conical rotors which are each of a conical cylinder structure; an axial suspension winding is embedded between the two conical stators; the radial stator, the two conical stators and the permanent magnet are connected through a magnetic conductive ring; and the radial rotor and the two conical rotors are sleeved with a rotor magnetic conductive ring and then a rotary shaft. Control magnetic circuits of the radial magnetic bearing body and the conical magnetic bearing body are isolated, axial force and radial force are decoupled, control is simple, the structure is compact, the three-degree-of-freedom mixing conical and radial magnetic bearing can be applicable to electromagnetic bearings or permanent magnetic bias type magnetic bearings, and universality is good.

Description

technical field [0001] The invention relates to a three-degree-of-freedom mixed conical radial magnetic bearing, which belongs to the field of magnetic suspension bearings. Background technique [0002] The permanent magnetic bias magnetic bearing uses permanent magnetic materials to generate the required bias magnetic field. In addition to effectively reducing the volume of the magnetic bearing and increasing the power density, it can also significantly reduce the number of turns of the control winding and reduce the inductance of the control winding. Improve the chopping and tracking effects of the levitation current, thereby improving the high-speed levitation control accuracy, and can reduce the power loss of the magnetic bearing to a large extent. Based on the above advantages, permanent magnet bias active magnetic bearings have been widely used in the support systems of high-speed and ultra-high-speed rotating machines such as aerospace, military, and flywheel energy s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C32/04
CPCF16C32/0421F16C2202/44
Inventor 刘泽远蔡骏赵春文
Owner 南京埃克锐特机电科技有限公司
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