A homopolar single-ring hybrid magnetic bearing

Abstract

The invention relates to a homopolar monocycle hybrid magnetic bearing, and solves the problem that a magnetic pole of an existing hybrid magnetic bearing only has a supporting property, the dynamic allocation is not preformed, and a rotor sensor needs to be mounted. The bearing comprises a stator, a rotor and a control system, wherein the stator comprises a bearing shell, at least more than 6 groups of electromagnets in an even number manner as well as permanent magnet combining blocks the quantity of which corresponds to that of the electromagnets, wherein the permanent magnet combining blocks and the electromagnets are alternately uniformly arranged on the inner side of an assembling ring at intervals, and the assembling ring is fixed in the bearing shell. The homopolar monocycle hybrid magnetic bearing provided by the invention has the advantages that the separation of the magnetic pole support and the damping property is realized, the magnetic pole property is subjected to dynamic allocation, the balance of the magnetic bearing is good, the structure is reasonable, the installation and use on the space are convenient, the detection of rotor displacement adopts a self-sensing technology, any rotor displacement sensor does not need to be placed in the bearing, the stability of a rotor system is guaranteed, the cost is reduced, the space does not need to occupy, and the maintenance and calibration are simple.

Description

technical field [0001] The invention relates to a non-contact magnetic suspension bearing, in particular to a homopolar single-ring hybrid magnetic bearing capable of polymorphic distribution of magnetic poles and better balance. Background technique [0002] Magnetic suspension bearing, also referred to as magnetic bearing for short, is a new type of high-performance bearing that uses the magnetic force between the stator and the rotor to suspend the rotor in space, so that there is no mechanical contact between the stator and the rotor. Since there is no mechanical contact between the stator and the rotor, the rotor of the magnetic suspension bearing can reach a very high operating speed, and has the advantages of small mechanical wear, low energy consumption, long life, no lubrication and no pollution, especially suitable for high speed , vacuum, ultra-clean and nuclear and other special applications. [0003] Magnetic bearings can be divided into active magnetic bearing...

AI Technical Summary

Problems solved by technology

[0007] The present invention mainly solves the problem that the magnetic poles in the existing hybrid magnetic bearings only have supporting properties, cannot be dynamically allocated, and are prone to gyro effect, and provides a magnetic pole with multiple magnetic poles, which can support and dynamically allocate damping properties to the magnetic poles. , homopolar single-ring hybrid magnetic bearing with better balance

[0008] The second object of the present invention is to solve the problems of unreasonable structure and inconvenient installation and use of existing hybrid magnetic bearings, and provide a homopolar single-ring hybrid magnetic bearing with reasonable structure, small size and convenient installation

[0009] Another object of the present invention is to solve the problem that the existing hybrid magnetic bearing needs to install the rotor displacement sensor in the bearing, the cost is high, the installation and wiring take up space, and the maintenance and calibration are difficult. It provides a homopolar type that does not need to install the sensor Single Ring Hybrid Magnetic Bearings

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