Integrated Magnetic Bearing Assembly for Compact Rotor Support
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Solution Overview
Problem
Existing active magnetic bearing systems for rotary machines are complex, bulky, and difficult to assemble and maintain due to their intricate structure and electrical connections, making them time-consuming to integrate and service.
Innovation Solution
An active magnetic bearing apparatus comprising a combined axial and radial magnetic bearing unit mounted directly to a support for attachment to the rotary machine housing, with shielding components to reduce electromagnetic interactions and facilitate closer mounting, and an auxiliary electromagnetic coil to minimize magnetic flux leakage, allowing for improved dynamic support and easier assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If axial and radial magnetic bearing assemblies are used separately, then load support capability is improved, but device complexity and assembly difficulty increase
Solution Approach 1:
The patent combines axial and radial magnetic bearing assemblies into a single integrated unit. The radial magnetic bearing assembly and axial magnetic bearing assembly are mounted directly to one another, with the radial assembly attached to the rotor and the axial assembly attached to the radial assembly, forming a compact integrated structure that maintains load support capability while reducing overall system complexity
Solution Approach 2:
The integrated magnetic bearing assembly serves multiple functions simultaneously - the radial magnetic bearing assembly supports radial loads while the axial magnetic bearing assembly supports axial loads, allowing a single compact unit to perform what previously required separate assemblies
2Object-affected harmful factors
If electromagnetic shielding components are added, then electromagnetic interference is reduced, but device complexity increases
Solution Approach 1:
The electromagnetic shielding components are nested within the existing bearing assembly structure. The radial magnetic bearing assembly and axial magnetic bearing assembly are mounted directly to one another with shielding integrated into the mounting structure, allowing electromagnetic interference reduction without adding external bulky components
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution enables a more compact, efficient, and easier-to-assemble active magnetic bearing system that reduces electromagnetic interference, allowing for closer component mounting and improved load support, thus simplifying integration and maintenance while enhancing operational performance.
Implementation Method 1
active magnetic bearing systems are known for supporting the load of a rotor of a rotary machine such as a compressor using magnetic levitation
Implementation Method 2
radial magnetic bearing systems are designed to support the radial load of a rotor, for example by constraining radial displacements of the rotor
Implementation Method 3
active magnetic bearing apparatus makes use of controllable electromagnets, each generally comprising an electrically conducting magnet wire wound into a coil around a ferromagnetic core
Data Source
AI summary
An active magnetic bearing apparatus for supporting a rotor of a rotary machine comprises an axial magnetic bearing unit and a radial magnetic bearing unit mounted directly to one another. One of the axial magnetic bearing unit and the radial magnetic bearing unit is mounted to a support for attachment to a housing of the rotary machine.