WO2007031758A3 - Radial magnetic bearing with coils on the stator and an axial magnetic field provided by magnets on a rotor disc - Google Patents

Radial magnetic bearing with coils on the stator and an axial magnetic field provided by magnets on a rotor disc Download PDF

Info

Publication number
WO2007031758A3
WO2007031758A3 PCT/GB2006/003417 GB2006003417W WO2007031758A3 WO 2007031758 A3 WO2007031758 A3 WO 2007031758A3 GB 2006003417 W GB2006003417 W GB 2006003417W WO 2007031758 A3 WO2007031758 A3 WO 2007031758A3
Authority
WO
WIPO (PCT)
Prior art keywords
coils
stator
rotor disc
magnets
magnetic field
Prior art date
Application number
PCT/GB2006/003417
Other languages
French (fr)
Other versions
WO2007031758A2 (en
Inventor
Wee Keong Khoo
Seamus D Garvey
Karuna Kalita
Original Assignee
Wee Keong Khoo
Seamus D Garvey
Karuna Kalita
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wee Keong Khoo, Seamus D Garvey, Karuna Kalita filed Critical Wee Keong Khoo
Publication of WO2007031758A2 publication Critical patent/WO2007031758A2/en
Publication of WO2007031758A3 publication Critical patent/WO2007031758A3/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C32/00—Bearings not otherwise provided for
    • F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
    • F16C32/0406—Magnetic bearings
    • F16C32/044—Active magnetic bearings
    • F16C32/0474—Active magnetic bearings for rotary movement
    • F16C32/0487—Active magnetic bearings for rotary movement with active support of four degrees of freedom
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C32/00—Bearings not otherwise provided for
    • F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
    • F16C32/0406—Magnetic bearings
    • F16C32/044—Active magnetic bearings
    • F16C32/0459—Details of the magnetic circuit
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/08—Structural association with bearings
    • H02K7/09—Structural association with bearings with magnetic bearings

Abstract

A rotor disc for a magnetic bearing comprises a plurality of concentric bands, an outer concentric band (4) and an inner concentric band (6) having a thickness substantially to match respectively outer conductive paths (2) and inner conductive paths (2) of associated electromagnetic coils (1) provided on a stator. The bands provide an axial magnetic field such that together with the coils a radial magnetic bearing is formed.
PCT/GB2006/003417 2005-09-14 2006-09-14 Radial magnetic bearing with coils on the stator and an axial magnetic field provided by magnets on a rotor disc WO2007031758A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0518716.6 2005-09-14
GB0518716A GB0518716D0 (en) 2005-09-14 2005-09-14 Axial MMF magnetic bearings

Publications (2)

Publication Number Publication Date
WO2007031758A2 WO2007031758A2 (en) 2007-03-22
WO2007031758A3 true WO2007031758A3 (en) 2007-06-07

Family

ID=35221446

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2006/003417 WO2007031758A2 (en) 2005-09-14 2006-09-14 Radial magnetic bearing with coils on the stator and an axial magnetic field provided by magnets on a rotor disc

Country Status (2)

Country Link
GB (1) GB0518716D0 (en)
WO (1) WO2007031758A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109578435A (en) * 2018-11-26 2019-04-05 北京航空航天大学 A kind of precision tracking bracket axial magnetic bearing

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB201913015D0 (en) 2019-09-10 2019-10-23 Rolls Royce Plc electrical systems
GB201913017D0 (en) * 2019-09-10 2019-10-23 Rolls Royce Plc Electrical system
GB201913016D0 (en) * 2019-09-10 2019-10-23 Rolls Royce Plc Elctrical systems
CN114962454B (en) * 2022-07-18 2024-01-12 中国人民解放军战略支援部队航天工程大学 Magnetic suspension universal stable platform

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2210995B1 (en) * 1972-03-08 1973-07-26 Teldix Gmbh, 6900 Heidelberg Magnetic device, especially for a flywheel
JPS5761813A (en) * 1980-09-29 1982-04-14 Toshiba Corp Magnetic bearing
US4920291A (en) * 1989-01-19 1990-04-24 Contraves Goerz Corporation Magnetic thrust bearing with high force modulation capability
US5220232A (en) * 1991-09-03 1993-06-15 Allied Signal Aerospace Stacked magnet superconducting bearing
US5237229A (en) * 1992-04-16 1993-08-17 Shinko Electric Co., Ltd. Magnetic bearing device with a rotating magnetic field
US5508573A (en) * 1992-09-25 1996-04-16 Andrews; James A. Magnetic bearing with phase-shifted loops
DE19641438A1 (en) * 1996-08-14 1998-02-19 Korea Advanced Inst Sci & Tech Passive magnet bearing structure, superconducting at high temperature, for radially holding rotor relative to stator
JP2002021850A (en) * 2000-07-05 2002-01-23 Yoji Okada Magnetic bearing
DE10333733A1 (en) * 2003-07-23 2005-02-24 Forschungszentrum Jülich GmbH Magnetic bearing element for machines with high numbers of revolutions, has ring-shaped permanent magnets encased in a carbon fiber binding band and separated at several points

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2210995B1 (en) * 1972-03-08 1973-07-26 Teldix Gmbh, 6900 Heidelberg Magnetic device, especially for a flywheel
JPS5761813A (en) * 1980-09-29 1982-04-14 Toshiba Corp Magnetic bearing
US4920291A (en) * 1989-01-19 1990-04-24 Contraves Goerz Corporation Magnetic thrust bearing with high force modulation capability
US5220232A (en) * 1991-09-03 1993-06-15 Allied Signal Aerospace Stacked magnet superconducting bearing
US5237229A (en) * 1992-04-16 1993-08-17 Shinko Electric Co., Ltd. Magnetic bearing device with a rotating magnetic field
US5508573A (en) * 1992-09-25 1996-04-16 Andrews; James A. Magnetic bearing with phase-shifted loops
DE19641438A1 (en) * 1996-08-14 1998-02-19 Korea Advanced Inst Sci & Tech Passive magnet bearing structure, superconducting at high temperature, for radially holding rotor relative to stator
JP2002021850A (en) * 2000-07-05 2002-01-23 Yoji Okada Magnetic bearing
DE10333733A1 (en) * 2003-07-23 2005-02-24 Forschungszentrum Jülich GmbH Magnetic bearing element for machines with high numbers of revolutions, has ring-shaped permanent magnets encased in a carbon fiber binding band and separated at several points

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109578435A (en) * 2018-11-26 2019-04-05 北京航空航天大学 A kind of precision tracking bracket axial magnetic bearing
CN109578435B (en) * 2018-11-26 2020-11-06 北京航空航天大学 Axial magnetic bearing for precision tracking support

Also Published As

Publication number Publication date
GB0518716D0 (en) 2005-10-19
WO2007031758A2 (en) 2007-03-22

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