GB1478868A - Radial active magnetic bearing - Google Patents

Radial active magnetic bearing

Info

Publication number
GB1478868A
GB1478868A GB5007974A GB5007974A GB1478868A GB 1478868 A GB1478868 A GB 1478868A GB 5007974 A GB5007974 A GB 5007974A GB 5007974 A GB5007974 A GB 5007974A GB 1478868 A GB1478868 A GB 1478868A
Authority
GB
United Kingdom
Prior art keywords
control
field
windings
rotor
rotating field
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.)
Expired
Application number
GB5007974A
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.)
Licentia Patent Verwaltungs GmbH
Original Assignee
Licentia Patent Verwaltungs 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 Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Publication of GB1478868A publication Critical patent/GB1478868A/en
Expired legal-status Critical Current

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
    • F16C32/0444—Details of devices to control the actuation of the electromagnets
    • F16C32/0457—Details of the power supply to 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
    • F16C32/0474—Active magnetic bearings for rotary movement
    • 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
    • F16C32/0497—Active magnetic bearings for rotary movement integrated in an electrodynamic machine, e.g. self-bearing motor generating torque and radial force
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • Magnetic Bearings And Hydrostatic Bearings (AREA)

Abstract

1478868 Automatic control of position LICENTIA PATENT-VERWALTUNGS GmbH 19 Nov 1974 [20 Nov 1973] 50079/74 Heading G3R [Also in Division F2] A rotor 12, e.g. of a centrifuge, is driven and positioned within a stator by a rotating field and a "control" field respectively, the latter field being controlled by voltages proportional to the product of the output of air-gap sensors (not shown) and auxiliary voltages having the frequency of the supply to the rotating field. The effect is that the rotating field is augmented and diminished at the angular positions corresponding to oversize and undersize air-gaps respectively. As shown, the two poles of one of three phases are illustrated; 16 and 17 are the windings for the rotational field and 18 and 19 are control field windings concentric, with the rotor, 18 is shown in Fig. 2A. The alternating factors in the control energizations are displaced by 90 degrees and the corresponding air-gap sensors are arranged orthoganally. The rotor may be squirrel cage, or simply tubular for hysteritic operation. In Fig. 2; 8 and 9 are toothed core rings and 10 is an axial core connecting them to a smooth bore central "return ring" 11. An alternative construction, Fig. 2b (not shown), uses a stepped rotor and it may have only one control winding. In other embodiments there are no separate control windings, their effect being produced by suitable modifications to the energization of the rotating field windings. In Fig. 3 (not shown) a three phase supply is converted to six for supply to bi-polar windings, the respective star points of which are interconnected through amplifiers by which the control currents are impressed and Figs. 4 to 7 (not shown), illustrate variations of this form using various combinations of phases and poles.
GB5007974A 1973-11-20 1974-11-19 Radial active magnetic bearing Expired GB1478868A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19732358527 DE2358527C3 (en) 1973-11-20 1973-11-20 Radial active magnetic bearing

Publications (1)

Publication Number Publication Date
GB1478868A true GB1478868A (en) 1977-07-06

Family

ID=5898921

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5007974A Expired GB1478868A (en) 1973-11-20 1974-11-19 Radial active magnetic bearing

Country Status (3)

Country Link
DE (1) DE2358527C3 (en)
GB (1) GB1478868A (en)
NL (1) NL7415035A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007003547A1 (en) * 2005-07-01 2007-01-11 Siemens Aktiengesellschaft Device for determining a shaft center deviation
JP2010025341A (en) * 2008-07-21 2010-02-04 Siemens Ag Magnetic radial bearing and magnetic bearing device with polyphase ac regulator
EP4075644A4 (en) * 2020-01-24 2023-02-08 Mitsubishi Heavy Industries, Ltd. Magnetic-geared electric rotary machine

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2555315B1 (en) * 1983-11-18 1986-03-28 Europ Propulsion DEVICE FOR MEASURING THE LONGITUDINAL TENSION OF A WEB OF MATERIAL
DE4020726A1 (en) * 1990-06-29 1992-01-02 Marinescu Geb Bikales Magnetic bearing for electric motor rotor shaft - has two axially adjacent annular coils and annular magnet separated by ring poles
FR2727174A1 (en) * 1994-11-21 1996-05-24 Aerospatiale MAGNETIC BEARING WITH RE-COIL COIL
WO1997007340A1 (en) * 1995-08-18 1997-02-27 Sulzer Electronics Ag Magnetic bearing and process for operating it
DE102011077488A1 (en) 2011-06-14 2012-12-20 Siemens Aktiengesellschaft Magnetic bearing with rotating field and method
DE102012202842A1 (en) 2012-02-24 2013-08-29 Siemens Aktiengesellschaft Magnetic bearing with force compensation

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007003547A1 (en) * 2005-07-01 2007-01-11 Siemens Aktiengesellschaft Device for determining a shaft center deviation
JP2009500991A (en) * 2005-07-01 2009-01-08 シーメンス アクチエンゲゼルシヤフト Device for detecting shaft eccentricity
US7709984B2 (en) 2005-07-01 2010-05-04 Siemens Aktiengesellschaft Device for determining a shaft center deviation
JP4652448B2 (en) * 2005-07-01 2011-03-16 シーメンス アクチエンゲゼルシヤフト Device for detecting shaft eccentricity
JP2010025341A (en) * 2008-07-21 2010-02-04 Siemens Ag Magnetic radial bearing and magnetic bearing device with polyphase ac regulator
EP4075644A4 (en) * 2020-01-24 2023-02-08 Mitsubishi Heavy Industries, Ltd. Magnetic-geared electric rotary machine

Also Published As

Publication number Publication date
DE2358527B2 (en) 1979-08-02
NL7415035A (en) 1975-05-22
DE2358527C3 (en) 1980-04-10
DE2358527A1 (en) 1975-05-28

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Legal Events

Date Code Title Description
PS Patent sealed