WO2001098676A3 - Magnetic bearing having features for low power consumption, reduced weight, and fault-tolerant operation - Google Patents

Magnetic bearing having features for low power consumption, reduced weight, and fault-tolerant operation Download PDF

Info

Publication number
WO2001098676A3
WO2001098676A3 PCT/US2001/020007 US0120007W WO0198676A3 WO 2001098676 A3 WO2001098676 A3 WO 2001098676A3 US 0120007 W US0120007 W US 0120007W WO 0198676 A3 WO0198676 A3 WO 0198676A3
Authority
WO
WIPO (PCT)
Prior art keywords
magnetic bearing
magnetic
fault
power consumption
features
Prior art date
Application number
PCT/US2001/020007
Other languages
French (fr)
Other versions
WO2001098676A2 (en
Inventor
Paul E Allaire
Original Assignee
Trinity Flywheel Power
Paul E Allaire
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 Trinity Flywheel Power, Paul E Allaire filed Critical Trinity Flywheel Power
Priority to AU2001268687A priority Critical patent/AU2001268687A1/en
Publication of WO2001098676A2 publication Critical patent/WO2001098676A2/en
Publication of WO2001098676A3 publication Critical patent/WO2001098676A3/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
    • F16C32/0442—Active magnetic bearings with devices affected by abnormal, undesired or non-standard conditions such as shock-load, power outage, start-up or touchdown
    • 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
    • F16C32/0444—Details of devices to control the actuation of the electromagnets
    • 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
    • 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
    • F16C32/048—Active magnetic bearings for rotary movement with active support of two degrees of freedom, e.g. radial magnetic bearings

Abstract

A magnetic bearing for suspending a rotatable shaft comprises a backiron (1), and a plurality of poles (2) fixedly coupled to the backiron and extending radially inward toward the rotatable shaft (6). The magnetic bearing also comprises a plurality of electromagnetic coils (4) each being circumferentially disposed around the backiron or the poles, and a magnetic target ring (5) fixedly coupled to the rotor shaft. Each of the poles is separated from the magnetic target ring by an airgap (3). The magnetic bearing further comprises one or more electrical circuits electrically coupled to the plurality of electromagnetic coils and being adapted to energize the plurality of electromagnetic coils so that magnetic flux is induced in the airgaps. The magnetic bearing includes features providing relating to fault detection and fault-tolerant operation. The magnetic bearing also includes mechanical and control-system features that reduce the power consumption of the magnetic bearing.
PCT/US2001/020007 2000-06-21 2001-06-21 Magnetic bearing having features for low power consumption, reduced weight, and fault-tolerant operation WO2001098676A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001268687A AU2001268687A1 (en) 2000-06-21 2001-06-21 Magnetic bearing having features for low power consumption, reduced weight, and fault-tolerant operation

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US21309100P 2000-06-21 2000-06-21
US60/213,091 2000-06-21

Publications (2)

Publication Number Publication Date
WO2001098676A2 WO2001098676A2 (en) 2001-12-27
WO2001098676A3 true WO2001098676A3 (en) 2002-05-16

Family

ID=22793703

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/020007 WO2001098676A2 (en) 2000-06-21 2001-06-21 Magnetic bearing having features for low power consumption, reduced weight, and fault-tolerant operation

Country Status (2)

Country Link
AU (1) AU2001268687A1 (en)
WO (1) WO2001098676A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110566582B (en) * 2019-09-24 2023-11-14 珠海格力电器股份有限公司 Magnetic bearing control method, magnetic bearing and magnetic bearing system

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1562799A (en) * 1975-10-02 1980-03-19 Europ Propulsion Tool-holding spindle assembly particularly for a grinding machine
JPS59136033A (en) * 1983-01-24 1984-08-04 Seiko Epson Corp Motor
JPH02261025A (en) * 1989-03-29 1990-10-23 Mitsubishi Electric Corp Stator for motor
US4983870A (en) * 1989-07-26 1991-01-08 Contraves Goerz Corporation Radial magnetic bearing
US5111102A (en) * 1989-05-25 1992-05-05 Meeks Crawford R Magnetic bearing structure
US5736800A (en) * 1994-10-18 1998-04-07 Iannello; Victor Light weight, high performance radial actuator for magnetic bearing systems
US5818137A (en) * 1995-10-26 1998-10-06 Satcon Technology, Inc. Integrated magnetic levitation and rotation system
JPH11101235A (en) * 1997-07-30 1999-04-13 Nippon Seiko Kk Magnetic bearing

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1562799A (en) * 1975-10-02 1980-03-19 Europ Propulsion Tool-holding spindle assembly particularly for a grinding machine
JPS59136033A (en) * 1983-01-24 1984-08-04 Seiko Epson Corp Motor
JPH02261025A (en) * 1989-03-29 1990-10-23 Mitsubishi Electric Corp Stator for motor
US5111102A (en) * 1989-05-25 1992-05-05 Meeks Crawford R Magnetic bearing structure
US4983870A (en) * 1989-07-26 1991-01-08 Contraves Goerz Corporation Radial magnetic bearing
US5736800A (en) * 1994-10-18 1998-04-07 Iannello; Victor Light weight, high performance radial actuator for magnetic bearing systems
US5818137A (en) * 1995-10-26 1998-10-06 Satcon Technology, Inc. Integrated magnetic levitation and rotation system
JPH11101235A (en) * 1997-07-30 1999-04-13 Nippon Seiko Kk Magnetic bearing
US6121704A (en) * 1997-07-30 2000-09-19 Nsk Ltd. Magnetic bearing

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 008, no. 264 (E - 282) 4 December 1984 (1984-12-04) *
PATENT ABSTRACTS OF JAPAN vol. 015, no. 009 (E - 1021) 9 January 1991 (1991-01-09) *

Also Published As

Publication number Publication date
AU2001268687A1 (en) 2002-01-02
WO2001098676A2 (en) 2001-12-27

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