Title:
MULTIPLE-AXIS MAGNETIC BEARING AND CONTROL OF THE MAGNETIC BEARING WITH A TOPOLOGY INCLUDING ACTIVE SWITCHES
Document Type and Number:
WIPO Patent Application WO/2013/152061
Kind Code:
A3
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 of the rotor shaft and supply an adjustment signal to the magnetic bearing system (120) to adjust the position of the shaft.
Inventors:
KSHIRSAGAR PARAG (US)
YAN PENG (US)
YAN PENG (US)
Application Number:
PCT/US2013/035052
Publication Date:
May 01, 2014
Filing Date:
April 03, 2013
Export Citation:
Assignee:
CARRIER CORP (US)
International Classes:
F04D29/058; F16C32/04; F25B31/02
Foreign References:
| EP0836022A1 | 1998-04-15 | |||
| EP1460294A2 | 2004-09-22 | |||
| EP1605177A1 | 2005-12-14 | |||
| EP2148104A1 | 2010-01-27 | |||
| EP1719960A1 | 2006-11-08 | |||
| US3937533A | 1976-02-10 | |||
| JP2000002469A | 2000-01-07 |
Attorney, Agent or Firm:
FOX, David, A. (20 Church Street 22nd Floo, Hartford Connecticut, US)
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