Apparatus and method for magnetically unloading a rotor bearing
US9892839B2 · kind B2 · utility
4Cited by
23References
22Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 22, 2013 |
| Grant date | Feb 13, 2018 |
| Priority date | — |
| Expiry date | Jul 21, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/16
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An apparatus and method for unloading a rotor bearing is described. The apparatus includes an electromagnet for levitating the rotor. In one embodiment, a sensor of the magnetic field near the electromagnet is used to control the current to levitate the rotor. In another embodiment, a method is provided that includes rotating the rotor, increasing the current to levitate the rotor and decrease the gap between electromagnet and rotor, and then reducing the current to levitate the rotor with a minimal amount of electric power to the electromagnet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.