Multiple-axis magnetic bearing and control of the magnetic bearing with active switch topologies
US9890811B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 3, 2013 |
| Grant date | Feb 13, 2018 |
| Priority date | — |
| Expiry date | Jul 7, 2033 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C2362/52
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A magnetic bearing system (120) includes a first active magnetic bearing (AMB) (202) including a first group of electromagnetic actuators (306, 310, 314, 318) to support a shaft and a second AMB (204) including a second group of electromagnetic actuators (308, 312, 316, 320) to support the shaft. A controller for the two AMB's includes a multi-phase topology (400) with a plurality of active current switches for controlling the electromagnetic actuators (306-320) of each of the first AMB (202) and the second AMB (204). Each electromagnetic actuator (306, 310, 314, 318) of the first AMB (202) is electrically coupled to an electromagnetic actuator (308, 312, 316, 320) of the second AMB (204). Each pair of coupled electromagnetic actuators (306, 316) is respectively connected to three phase legs (418, 420, 422) of the topology (400) of the controller, whereby one end (X2+, X3−) of each of the electromagnetic actuators of a pair (306, 316) is connected to one phase leg (420) of the topology (400) and the other ends (X1+, X4−) are respectively connected to two further phase legs (418, 422) of the topology (400). The controller is operable to receive information indicative of a position o…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.