公开(公告)号：US11415437B2

公开(公告)日：2022-08-16

申请号：US15725778

申请日：2017-10-05

Applicant: SKF Magnetic Mechatronics

Inventor： Stephane Hay ,  Fabien Bercher ,  Alain Boulier ,  Emilien Comoret

IPC: G01D11/24

Abstract: A sensor for operating in an environment subjected to corrosive gases or liquids under pressure, including a housing inside which are installed: a sensing portion, at least one wire electrically connected to the sensing portion, and a seal for sealing the connection between the sensing portion and the at least one wire, with at least one through-hole receiving a portion of the at least one wire. The sensor further including a compressor installed inside the housing, movable with respect to the housing and adapted to contact the seal in order to compress. The seal is made from a single material that is softer than the material constituting the housing. Upon displacement of the compressor, the seal is deformed until the creation of a compression force exerted by the seal onto the portion of the at least one wire, prevents any passage of corrosive gases or liquids between the seal therebetween.

公开(公告)号：US20210305881A1

公开(公告)日：2021-09-30

申请号：US17176202

申请日：2021-02-16

Applicant: SKF Magnetic Mechatronics

Inventor： Joaquim Da Silva ,  Joel Mouterde

IPC: H02K7/09 ,  F16C32/04

Abstract: A system for compensating for the stresses applied to a bearing that rotatably supports a rotor shaft of a rotating machine relative to a stator of the machine. The system provides at least one sensor for measuring an input signal positioned on an element of the bearing, a module for acquiring the input signal configured to convert the input signal into a value of the deformation applied to the rolling bearing, a module for determining a compensation signal as a function of the deformation value, and an amplifier module configured to control a magnetic actuator rotatably supporting the shaft of the rotor and including at least one electromagnet, the amplifier module being configured to convert the compensation signal into a voltage signal transmitted to the electromagnet of the magnetic actuator, the magnetic actuator being configured to exert a force on the rotor shaft as a function of the voltage signal.

公开(公告)号：US20210279387A1

公开(公告)日：2021-09-09

申请号：US17174744

申请日：2021-02-12

Applicant: SKF Magnetic Mechatronics

Inventor： Francois Caire ,  Lakdar Sadi-Haddad

IPC: G06F30/27

Abstract: The method for obtaining a temporal model of a magnetic bearing provides the generation of reference data representative of characteristics of the bearing. The method includes the production of the temporal model of the magnetic bearing from the reference data having temporal data.

公开(公告)号：US10955001B2

公开(公告)日：2021-03-23

申请号：US16214217

申请日：2018-12-10

Applicant: SKF Magnetic Mechatronics

Inventor： Luc Baudelocque

IPC: F16C32/04

Abstract: A radial magnetic bearing assembly having an unsymmetrical stator. The assembly comprises fewer or smaller electromagnets, and thus capacity, in the two lower quadrants below the rotor in use, in comparison to the electromagnets, and thus capacity, in the two upper quadrants above the rotor in use. This creates space in the two lower quadrants that can advantageously be used to move for example instrumentation and cooling from other places of the assembly to make the bearing assembly compactor, and also to be able to put instrumentation and cooling where it is best needed, close to the rotor.

公开(公告)号：US10897164B2

公开(公告)日：2021-01-19

申请号：US15597275

申请日：2017-05-17

Applicant: SKF Magnetic Mechatronics

Inventor： Erwan Salahun ,  Joaquim Da Silva ,  Bruno Tellier

IPC: H01F3/04 ,  H01F7/06 ,  H02K1/02 ,  H02K7/09 ,  H02K15/02

Abstract: The invention relates to a method of manufacturing a lamination stack used in a rotating electrical machine. The method includes providing naked sheets made of ferritic material; preparing both sides of each sheet so as to obtain a determined surface roughness; coating at least one side of each sheet with an chemically protective electrically insulating material; stacking the coated sheets; compressing the stack obtained; heating the compressed stack at a temperature above the melting temperature of the insulating material; and cooling down the compressed stack so as to form an integral lamination stack consisting of alternating sheets of ferritic material and layers of insulating material. The invention also relates to an electrical machine comprising such a lamination stack.

公开(公告)号：US10444106B2

公开(公告)日：2019-10-15

申请号：US15349312

申请日：2016-11-11

Applicant: SKF Magnetic Mechatronics

Inventor： Ulrich Schroeder

IPC: G01R31/28 ,  G01M1/32 ,  H02K7/04 ,  H02K7/09 ,  H02K15/16 ,  F16C32/04

Abstract: A balancing method for balancing at high speed a flexible rotor of a rotary machine, the rotary machine having a stator, and the rotor being supported in the stator by at least two radial magnetic bearings. The balancing method including a step of placing the rotor inside the stator, a step of performing at least one first run in order to identify amplitude and angular location of the unbalance in a first speed range below critical speed, a step of placing first balancing masses inside the rotor on predefined first balancing planes, a step of performing at least one second run in order to identify amplitude and angular location of the unbalance in a second speed range above critical speed, and a step of placing second balancing masses inside the rotor on predefined second balancing planes.

公开(公告)号：US10393174B2

公开(公告)日：2019-08-27

申请号：US14571609

申请日：2014-12-16

Applicant: Luc Baudelocque ,  Mohamed Bendaoud ,  Matthieu Oliva

Inventor： Luc Baudelocque ,  Mohamed Bendaoud ,  Matthieu Oliva

IPC: H02K7/09 ,  F16C32/04

Abstract: A thrust disc for a magnetic bearing, wherein the thrust disc comprises: a body, which is adapted to be mounted on a shaft and which has a first offset yield strength and a first magnetic permeability, and at least one flange which is fixed to the body in a position where it can interact with a thrust stator in order to form a magnetic bearing and which has a second offset yield strength and a second magnetic permeability; wherein the first offset yield strength is higher than the second offset yield strength; and wherein the first magnetic permeability is smaller than the second magnetic permeability. Additionally, the magnetic bearing can be equipped with such a thrust disc. An apparatus can be equipped with such a magnetic bearing.

公开(公告)号：US10208759B2

公开(公告)日：2019-02-19

申请号：US14224401

申请日：2014-03-25

Applicant: Eduardo Carrasco ,  Eric Helene

Inventor： Eduardo Carrasco ,  Eric Helene

IPC: F04D29/048 ,  F04D29/058 ,  F04D17/10 ,  F04D25/06 ,  F16C32/04 ,  F04D29/051 ,  F04D29/059 ,  F04D29/62

Abstract: A turbo-machine for compressing or expanding a fluid comprises a housing, a rotary shaft, an electric machine, an impeller mounted at an end of the rotary shaft, radial magnetic bearings, an axial magnetic bearing, an axial detector, radial detectors, a control circuit, and auxiliary bearings. An auxiliary bearing is integrated within a stator portion of the axial magnetic bearing and this stator portion of the axial magnetic bearing is located opposite a rotor armature of the axial magnetic bearing. The rotor armature is made of iron or of a material which is adapted to be attracted in a magnetic field and is constituted by a rear face of the impeller.

公开(公告)号：US10116246B2

公开(公告)日：2018-10-30

申请号：US15259467

申请日：2016-09-08

Applicant: Lakdar Sadi-Haddad ,  Joaquim Da Silva ,  Andre Deandrade

Inventor： Lakdar Sadi-Haddad ,  Joaquim Da Silva ,  Andre Deandrade

IPC: H02P21/05 ,  H02P21/00 ,  H02P6/10 ,  H02P29/50

Abstract: The invention concerns an electrical installation providing an apparatus, a three-phase inverter and a control device, the inverter being adapted for generating a three-phase current presenting a first frequency for operating the apparatus and an undesired frequency component presenting a second frequency. The control device is adapted for measuring a parameter of each phase of the current, the measured parameters forming a measurement vector, and for calculating a Clarke transform, providing a first vector represented in a first basis of a two-dimensional vector space, of the measurement vector. The control device is adapted for generating a representation of the first vector in a second basis of the vector space, the second basis rotating at the second frequency with respect to the first basis.

公开(公告)号：US10030702B2

公开(公告)日：2018-07-24

申请号：US14945599

申请日：2015-11-19

Applicant: Yvon Baucé ,  Francis Bienaime ,  Eduardo Carrasco

Inventor： Yvon Baucé ,  Francis Bienaime ,  Eduardo Carrasco

IPC: F16C32/04 ,  F16C43/00 ,  H01F5/02 ,  H02K15/00 ,  H01F7/06

CPC classification number: F16C32/048 ,  F16C32/0446 ,  F16C32/0461 ,  F16C32/047 ,  F16C43/00 ,  F16C2360/45 ,  H01F5/02 ,  H01F7/06 ,  H02K15/00

Abstract: A magnetic bearing, adapted to equip a rotary apparatus. The magnetic bearing comprises: an actuator sub-assembly provided with a magnetic base and at least three actuator bobbins mounted on the magnetic base, and a sensor sub-assembly provided with at least three magnetic sensors associated with the actuator bobbins. At least one sub-assembly amidst the actuator sub-assembly and the sensor sub-assembly comprises at least three sectors mounted together. Each sector includes at least one actuator bobbin when the sector belongs to the actuator sub-assembly, or at least one magnetic sensor when the sector belongs to the sensor sub-assembly. The invention also concerns a rotary apparatus comprising such a magnetic bearing and a method for manufacturing such a magnetic bearing.