FR2245874A1 - Magnetic rotor made from hollow cylinder - has permanent magnet on rotor with radial magnetic field and magnet rings on stator - Google Patents

Magnetic rotor made from hollow cylinder - has permanent magnet on rotor with radial magnetic field and magnet rings on stator

Info

Publication number
FR2245874A1
FR2245874A1 FR7428001A FR7428001A FR2245874A1 FR 2245874 A1 FR2245874 A1 FR 2245874A1 FR 7428001 A FR7428001 A FR 7428001A FR 7428001 A FR7428001 A FR 7428001A FR 2245874 A1 FR2245874 A1 FR 2245874A1
Authority
FR
France
Prior art keywords
rotor
stator
magnetic field
permanent magnet
magnet
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
FR7428001A
Other languages
French (fr)
Other versions
FR2245874B3 (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rockwell Collins Deutschland GmbH
Original Assignee
Teldix GmbH
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 Teldix GmbH filed Critical Teldix GmbH
Publication of FR2245874A1 publication Critical patent/FR2245874A1/en
Application granted granted Critical
Publication of FR2245874B3 publication Critical patent/FR2245874B3/fr
Granted legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • F16C32/0476—Active magnetic bearings for rotary movement with active support of one degree of freedom, e.g. axial magnetic bearings
    • F16C32/0478—Active magnetic bearings for rotary movement with active support of one degree of freedom, e.g. axial magnetic bearings with permanent magnets to support radial load
    • 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
    • F16C2300/00—Application independent of particular apparatuses
    • F16C2300/02—General use or purpose, i.e. no use, purpose, special adaptation or modification indicated or a wide variety of uses mentioned
    • 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
    • F16C32/0408—Passive magnetic bearings
    • F16C32/0423—Passive magnetic bearings with permanent magnets on both parts repelling each other
    • F16C32/0425—Passive magnetic bearings with permanent magnets on both parts repelling each other for radial load mainly
    • 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
    • F16C32/0493—Active magnetic bearings for rotary movement integrated in an electrodynamic machine, e.g. self-bearing motor
    • F16C32/0495—Active magnetic bearings for rotary movement integrated in an electrodynamic machine, e.g. self-bearing motor generating torque and axial force

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Magnetic Bearings And Hydrostatic Bearings (AREA)
  • Brushless Motors (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)

Abstract

There are normal ring magnets on the ends of the rotor but, in addition, there is a permanent magnet ring with radial magnetic field opposing the stator winding. This generates an axial force on the rotor. On the stator there is at least one sensor measuring the axial position of the rotor. A regulator varies the current in the windings, depending on the sensor. This keeps the rotor stable. The magnet rings on the rotor are made from ferromagnetic material. By using a series of ring magnets it is possible to provide progressive radial and axial stabilisation. The outer face of the rotor and the inner surface of the stator are coated with a thin smooth layer of non magnetic high conductance material.
FR7428001A 1973-08-17 1974-08-13 Magnetic rotor made from hollow cylinder - has permanent magnet on rotor with radial magnetic field and magnet rings on stator Granted FR2245874A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2341766A DE2341766C3 (en) 1973-08-17 1973-08-17 Magnetic storage

Publications (2)

Publication Number Publication Date
FR2245874A1 true FR2245874A1 (en) 1975-04-25
FR2245874B3 FR2245874B3 (en) 1977-06-10

Family

ID=5890086

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7428001A Granted FR2245874A1 (en) 1973-08-17 1974-08-13 Magnetic rotor made from hollow cylinder - has permanent magnet on rotor with radial magnetic field and magnet rings on stator

Country Status (3)

Country Link
CH (1) CH579722A5 (en)
DE (1) DE2341766C3 (en)
FR (1) FR2245874A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2818255A1 (en) * 1978-04-26 1979-11-08 Teldix Gmbh MAGNETIC STORAGE ARRANGEMENT
DE2919236C2 (en) * 1979-05-12 1982-08-12 Kernforschungsanlage Jülich GmbH, 5170 Jülich Magnetic floating bearing for one rotor
JPS612348Y2 (en) * 1980-10-09 1986-01-25
US4688998A (en) * 1981-03-18 1987-08-25 Olsen Don B Magnetically suspended and rotated impellor pump apparatus and method
DE3130974A1 (en) * 1981-08-05 1983-02-24 Teldix Gmbh, 6900 Heidelberg Magnetic bearing
US4944748A (en) * 1986-10-12 1990-07-31 Bramm Gunter W Magnetically suspended and rotated rotor
US5078741A (en) * 1986-10-12 1992-01-07 Life Extenders Corporation Magnetically suspended and rotated rotor

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2139614A1 (en) * 1971-08-07 1973-05-30 Dornier Ag MAGNETIC MOUNTING, IN PARTICULAR FREE-FLOATING SUSPENSION FOR AN AXIALLY EXTENDED ROTOR WITH VERTICAL ROTARY AXIS
DE2213447C3 (en) * 1972-03-20 1981-01-29 Karl 5170 Juelich Boden Magnetic storage

Also Published As

Publication number Publication date
DE2341766A1 (en) 1975-02-27
DE2341766B2 (en) 1981-03-12
FR2245874B3 (en) 1977-06-10
DE2341766C3 (en) 1982-02-11
CH579722A5 (en) 1976-09-15

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