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公开(公告)号：US20170122372A1
公开(公告)日：2017-05-04
申请号：US15128875
申请日：2015-03-26
Applicant: ABB Schweiz AG
Inventor： Bin Liu , Johan Sjöberg
IPC: F16C32/04
CPC classification number: F16C32/0457 , F16C32/0446 , F16C32/0451 , F16C32/0474
Abstract: An electromagnetic bearing arrangement for a rotating equipment includes an electromagnet; an amplifier arrangement based on IGBT (Insulated-Gate Bipolar Transistor) switches; a power supply; a controller; and a position sensor. The controller includes a position control module and a direct force control module, the position sensor is operatively connected to the control module to calculate a force reference (Fref) based on the measured position of the rotating equipment. The electromagnetic bearing arrangement includes a sensor for measuring at least one parameter (iu, id) indicative of a force exerted by the electromagnet to calculate an estimated force (Fcal), to compare the force reference with the estimated force, and to control the amplifier.
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公开(公告)号：US09739308B2
公开(公告)日：2017-08-22
申请号：US15128875
申请日：2015-03-26
Applicant: ABB Schweiz AG
Inventor： Bin Liu , Johan Sjöberg
CPC classification number: F16C32/0457 , F16C32/0446 , F16C32/0451 , F16C32/0474
Abstract: An electromagnetic bearing arrangement for a rotating equipment includes an electromagnet; an amplifier arrangement based on IGBT (Insulated-Gate Bipolar Transistor) switches; a power supply; a controller; and a position sensor. The controller includes a position control module and a direct force control module, the position sensor is operatively connected to the control module to calculate a force reference (Fref) based on the measured position of the rotating equipment. The electromagnetic bearing arrangement includes a sensor for measuring at least one parameter (iu, id) indicative of a force exerted by the electromagnet to calculate an estimated force (Fcal), to compare the force reference with the estimated force, and to control the amplifier.
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