GB2075274A - Permanent-magnet rotors for electrical machines - Google Patents

Permanent-magnet rotors for electrical machines Download PDF

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Publication number
GB2075274A
GB2075274A GB8014831A GB8014831A GB2075274A GB 2075274 A GB2075274 A GB 2075274A GB 8014831 A GB8014831 A GB 8014831A GB 8014831 A GB8014831 A GB 8014831A GB 2075274 A GB2075274 A GB 2075274A
Authority
GB
United Kingdom
Prior art keywords
pole pieces
inductor
electrical machine
received
rotary
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.)
Withdrawn
Application number
GB8014831A
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.)
INST ELEKTROPROMISHLENOST
Original Assignee
INST ELEKTROPROMISHLENOST
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 INST ELEKTROPROMISHLENOST filed Critical INST ELEKTROPROMISHLENOST
Priority to GB8014831A priority Critical patent/GB2075274A/en
Publication of GB2075274A publication Critical patent/GB2075274A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/27—Rotor cores with permanent magnets
    • H02K1/2706—Inner rotors
    • H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
    • H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
    • H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
    • H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
    • H02K1/2766—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM] having a flux concentration effect
    • H02K1/2773—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM] having a flux concentration effect consisting of tangentially magnetized radial magnets

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)

Abstract

A rotary inductor for an electrical machine is disclosed. The inductor comprises a shaft (1) to which are attached pole pieces (2), between adjacent ones of which permanent magnets (4) are received with magnetic axes directed parallel to the axis of rotation. The pole pieces have bulges (3) under which are received, pressed towards the pole pieces, I-shaped braces (5), each one of which clamps simultaneously two adjacent pole pieces and fixes radially the permanent magnet between the pole pieces. <IMAGE>

Description

SPECIFICATION A rotary inductor for an electrical machine The present invention relates to a rotary inductor for an electrical machine.
A rotary inductor for an electrical machine is known with permanent magnets whose magnetic axes are directed parallel to the axis of rotation, which inductor comprises a shaft to which are affixed pole pieces directing radially the magnetic flux created by the permanent magnets, which magnets are placed between the pole pieces. The magnets are axially clamped together with the pole pieces between two diamagnetic discs, by means of studs passing through openings. Radially, the permanent magnets are affixed by diamagnetic wedges, placed into channels cut in the upper parts of the side surfaces of the pole pieces.
According to the present invention there is provided a rotary inductorforan electrical machine, the inductor comprising a shaft to which are attached pole pieces, between adjacent ones of which permanent magnets are received with magnetic axes directed substantially parallel to the axis of rotation, in which inductor the pole pieces have bulges, under which are received, pressed towards the pole pieces, elongate braces, each one of which clamps simultaneously two adjacent pole pieces and fixes radially the permanent magnet between the pole pieces.
The present invention will now be described by way of example with reference to the accompanying drawings, in which: Figure 1 is a cross-section through a rotary inductorforan electrical machine; and Figure 2 is a side view of the inductor.
According to Figures 1 and 2, on a shaft 1 is fixed a magnetic core comprising pole pieces 2, between which are received permanent magnets 4 having magnetic axes which are directed parallel with the axis of rotation of the shaft 1. The outer ends of the pole pieces 2 have bulges 3, under which are received, pressed towards the pole pieces 2, 1shaped braces 5. Each of the braces 5 clamps simultaneously two adjacent pole pieces 2 and fixes radially the permanent magnet 4 in the space between the brace 5, the shaft 1 and the adjacent pole pieces 2.
1. A rotary inductor for an electrical machine, the inductor comprising a shaft to which are attached pole pieces, between adjacent ones of which permanent magnets are received with magnetic axes directed substantially parallel to the axis of rotation, in which inductor the pole pieces have bulges, under which are received, pressed towards the pole pieces, elongate braces, each one of which clamps simultaneously two adjacent pole pieces and fixes radially the permanent magnet between the pole pieces.
2. An inductor according to claim 1, wherein each of the braces is I-shaped.
3. A rotary inductor for an electrical machine, substantially as herein described with reference to the accompanying drawing.
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (3)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION A rotary inductor for an electrical machine The present invention relates to a rotary inductor for an electrical machine. A rotary inductor for an electrical machine is known with permanent magnets whose magnetic axes are directed parallel to the axis of rotation, which inductor comprises a shaft to which are affixed pole pieces directing radially the magnetic flux created by the permanent magnets, which magnets are placed between the pole pieces. The magnets are axially clamped together with the pole pieces between two diamagnetic discs, by means of studs passing through openings. Radially, the permanent magnets are affixed by diamagnetic wedges, placed into channels cut in the upper parts of the side surfaces of the pole pieces. According to the present invention there is provided a rotary inductorforan electrical machine, the inductor comprising a shaft to which are attached pole pieces, between adjacent ones of which permanent magnets are received with magnetic axes directed substantially parallel to the axis of rotation, in which inductor the pole pieces have bulges, under which are received, pressed towards the pole pieces, elongate braces, each one of which clamps simultaneously two adjacent pole pieces and fixes radially the permanent magnet between the pole pieces. The present invention will now be described by way of example with reference to the accompanying drawings, in which: Figure 1 is a cross-section through a rotary inductorforan electrical machine; and Figure 2 is a side view of the inductor. According to Figures 1 and 2, on a shaft 1 is fixed a magnetic core comprising pole pieces 2, between which are received permanent magnets 4 having magnetic axes which are directed parallel with the axis of rotation of the shaft 1. The outer ends of the pole pieces 2 have bulges 3, under which are received, pressed towards the pole pieces 2, 1shaped braces 5. Each of the braces 5 clamps simultaneously two adjacent pole pieces 2 and fixes radially the permanent magnet 4 in the space between the brace 5, the shaft 1 and the adjacent pole pieces 2. CLAIMS
1. A rotary inductor for an electrical machine, the inductor comprising a shaft to which are attached pole pieces, between adjacent ones of which permanent magnets are received with magnetic axes directed substantially parallel to the axis of rotation, in which inductor the pole pieces have bulges, under which are received, pressed towards the pole pieces, elongate braces, each one of which clamps simultaneously two adjacent pole pieces and fixes radially the permanent magnet between the pole pieces.
2. An inductor according to claim 1, wherein each of the braces is I-shaped.
3. A rotary inductor for an electrical machine, substantially as herein described with reference to the accompanying drawing.
GB8014831A 1980-05-02 1980-05-02 Permanent-magnet rotors for electrical machines Withdrawn GB2075274A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8014831A GB2075274A (en) 1980-05-02 1980-05-02 Permanent-magnet rotors for electrical machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8014831A GB2075274A (en) 1980-05-02 1980-05-02 Permanent-magnet rotors for electrical machines

Publications (1)

Publication Number Publication Date
GB2075274A true GB2075274A (en) 1981-11-11

Family

ID=10513204

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8014831A Withdrawn GB2075274A (en) 1980-05-02 1980-05-02 Permanent-magnet rotors for electrical machines

Country Status (1)

Country Link
GB (1) GB2075274A (en)

Cited By (50)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0096515A1 (en) * 1982-06-01 1983-12-21 Fanuc Ltd. A synchronous motor employable as a servomotor
EP0104830A1 (en) * 1982-09-27 1984-04-04 Fanuc Ltd. A permanent magnet field type rotor structure for an electric machine
GB2131630A (en) * 1982-12-08 1984-06-20 Bosch Gmbh Robert Permanent-magnet energized generator for vehicles
EP0140981A1 (en) * 1983-04-20 1985-05-15 Fanuc Ltd. Permanent magnet field rotor
DE3516380A1 (en) * 1984-05-08 1985-11-14 DSO "Elprom", Sofia/Sofija ROTOR FOR AN ELECTRICAL MACHINE
DE3517883A1 (en) * 1984-05-22 1985-11-28 DSO "Elprom", Sofia/Sofija ROTOR OF AN ELECTRICAL MACHINE
GB2177263A (en) * 1985-06-27 1987-01-14 Bosch Gmbh Robert Rotary armature for an electrical setting motor
US4700097A (en) * 1982-12-24 1987-10-13 Fanuc Ltd. Synchronous machine
FR2604312A1 (en) * 1986-09-23 1988-03-25 Alsthom Cgee Rotor with magnets
EP0327470A1 (en) * 1988-02-05 1989-08-09 Louis Banon Rotor of a rotary electric machine with permanent magnets of the flux concentration type
EP0365689A1 (en) * 1988-04-30 1990-05-02 Fanuc Ltd. Synchronous motor
FR2650713A1 (en) * 1989-08-02 1991-02-08 Alsthom Gec Motor with magnets
US5013951A (en) * 1988-08-19 1991-05-07 Stadnik Ivan P Multipolar rotor for electric machine with interpolar and polar magnets
US5066880A (en) * 1989-04-04 1991-11-19 Louis Banon Permanent magnet polyphase synchronous machine
US5554900A (en) * 1994-02-04 1996-09-10 Schlenker Enterprises Ltd. Motor including embedded permanent-magnet rotor
EP0797285A1 (en) * 1996-03-19 1997-09-24 Voith Turbo GmbH & Co. KG Rotor for an electric machine, in particular for a transversal flux machine
DE19748678A1 (en) * 1997-11-04 1999-05-12 Ni Skij I Elektrofiziceskoj Ap Electrical machine with permanent magnets, e.g. for ships
US6005318A (en) * 1994-02-04 1999-12-21 Schelenker Enterprises Ltd. Motor including embedded permanent-magnet rotor and method for making the same
US6259180B1 (en) 1996-07-02 2001-07-10 Schlenker Enterprises, Ltd. Motor including embedded permanent magnet rotor and method for making the same
GB2392315A (en) * 2002-05-10 2004-02-25 Delta Invest Ltd Rotor and stator for a permanent magnet motor
DE102007015249A1 (en) 2007-03-27 2008-10-02 Miele & Cie. Kg Rotor, in particular for an electric motor of a circulating pump
WO2009093043A2 (en) * 2008-01-24 2009-07-30 Phillip Raymond Michael Denne Rotary electromagnetic machines
US7619342B2 (en) * 2004-05-27 2009-11-17 Abb Oy Rotor for an electric machine
US7893555B2 (en) 2001-09-13 2011-02-22 Wilic S.Ar.L. Wind power current generator
US7911104B2 (en) * 2009-03-10 2011-03-22 Drs Power Technology, Inc. Pole retention configuration for electric machine rotors
US7936102B2 (en) 2005-11-29 2011-05-03 Wilic S.Ar.L Magnet holder for permanent magnet rotors of rotating machines
US7946591B2 (en) 2005-09-21 2011-05-24 Wilic S.Ar.L. Combined labyrinth seal and screw-type gasket bearing sealing arrangement
US20110221296A1 (en) * 2008-08-20 2011-09-15 Societe De Technologie Michelin Internal Rotor Including a Grooved Shaft Intended for a Rotary Electric Machine
US8120198B2 (en) 2008-07-23 2012-02-21 Wilic S.Ar.L. Wind power turbine
US8272822B2 (en) 2009-01-30 2012-09-25 Wilic S.Ar.L. Wind power turbine blade packing and packing method
US8274170B2 (en) 2009-04-09 2012-09-25 Willic S.A.R.L. Wind power turbine including a cable bundle guide device
US8310122B2 (en) 2005-11-29 2012-11-13 Wilic S.A.R.L. Core plate stack assembly for permanent magnet rotor or rotating machines
US8319362B2 (en) 2008-11-12 2012-11-27 Wilic S.Ar.L. Wind power turbine with a cooling system
US8358189B2 (en) 2009-08-07 2013-01-22 Willic S.Ar.L. Method and apparatus for activating an electric machine, and electric machine
US8410623B2 (en) 2009-06-10 2013-04-02 Wilic S. AR. L. Wind power electricity generating system and relative control method
US8492919B2 (en) 2008-06-19 2013-07-23 Wilic S.Ar.L. Wind power generator equipped with a cooling system
US8541902B2 (en) 2010-02-04 2013-09-24 Wilic S.Ar.L. Wind power turbine electric generator cooling system and method and wind power turbine comprising such a cooling system
US8618689B2 (en) 2009-11-23 2013-12-31 Wilic S.Ar.L. Wind power turbine for generating electric energy
US8659867B2 (en) 2009-04-29 2014-02-25 Wilic S.A.R.L. Wind power system for generating electric energy
US8669685B2 (en) 2008-11-13 2014-03-11 Wilic S.Ar.L. Wind power turbine for producing electric energy
CN103647363A (en) * 2013-12-13 2014-03-19 天津瑞德科技发展有限公司 Fabricated rotor rare-earth permanent magnet torque motor
US8723383B2 (en) 2008-08-20 2014-05-13 Michelin Recherche Et Technique S.A. Interior rotor for a rotary electrical machine and method of assembling it
US8937397B2 (en) 2010-03-30 2015-01-20 Wilic S.A.R.L. Wind power turbine and method of removing a bearing from a wind power turbine
US8937398B2 (en) 2011-03-10 2015-01-20 Wilic S.Ar.L. Wind turbine rotary electric machine
US8957555B2 (en) 2011-03-10 2015-02-17 Wilic S.Ar.L. Wind turbine rotary electric machine
US8975770B2 (en) 2010-04-22 2015-03-10 Wilic S.Ar.L. Wind power turbine electric generator and wind power turbine equipped with an electric generator
US9006918B2 (en) 2011-03-10 2015-04-14 Wilic S.A.R.L. Wind turbine
DE102014216555A1 (en) * 2014-08-20 2016-02-25 BSH Hausgeräte GmbH Rotor for an electric machine of a household appliance, household appliance and method for producing a rotor for an electrical machine of a household appliance
EP2715916A4 (en) * 2011-05-26 2016-03-23 Electric Line Uppland Ab A rotary electric machine, a rotor for a such and a vehicle/craft with such a machine
EP4113794A4 (en) * 2020-02-27 2023-08-09 LG Innotek Co., Ltd. Motor

Cited By (63)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0096515A1 (en) * 1982-06-01 1983-12-21 Fanuc Ltd. A synchronous motor employable as a servomotor
EP0104830A1 (en) * 1982-09-27 1984-04-04 Fanuc Ltd. A permanent magnet field type rotor structure for an electric machine
US4543506A (en) * 1982-09-27 1985-09-24 Fanuc Ltd. Permanant magnet field type rotor structure for an electric machine
GB2131630A (en) * 1982-12-08 1984-06-20 Bosch Gmbh Robert Permanent-magnet energized generator for vehicles
US4700097A (en) * 1982-12-24 1987-10-13 Fanuc Ltd. Synchronous machine
EP0140981A1 (en) * 1983-04-20 1985-05-15 Fanuc Ltd. Permanent magnet field rotor
EP0140981A4 (en) * 1983-04-20 1985-07-30 Fanuc Ltd Permanent magnet field rotor.
DE3516380A1 (en) * 1984-05-08 1985-11-14 DSO "Elprom", Sofia/Sofija ROTOR FOR AN ELECTRICAL MACHINE
DE3517883A1 (en) * 1984-05-22 1985-11-28 DSO "Elprom", Sofia/Sofija ROTOR OF AN ELECTRICAL MACHINE
GB2177263A (en) * 1985-06-27 1987-01-14 Bosch Gmbh Robert Rotary armature for an electrical setting motor
GB2177263B (en) * 1985-06-27 1989-07-12 Bosch Gmbh Robert Rotary armature for an electrical setting motor
FR2604312A1 (en) * 1986-09-23 1988-03-25 Alsthom Cgee Rotor with magnets
EP0327470A1 (en) * 1988-02-05 1989-08-09 Louis Banon Rotor of a rotary electric machine with permanent magnets of the flux concentration type
FR2627030A1 (en) * 1988-02-05 1989-08-11 Banon Louis ROTOR OF ROTATING ELECTRIC MACHINE WITH PERMANENT MAGNETS OF FLOW CONCENTRATION TYPE
EP0365689A1 (en) * 1988-04-30 1990-05-02 Fanuc Ltd. Synchronous motor
EP0365689A4 (en) * 1988-04-30 1990-10-10 Fanuc Ltd Synchronous motor
US5013951A (en) * 1988-08-19 1991-05-07 Stadnik Ivan P Multipolar rotor for electric machine with interpolar and polar magnets
US5066880A (en) * 1989-04-04 1991-11-19 Louis Banon Permanent magnet polyphase synchronous machine
FR2650713A1 (en) * 1989-08-02 1991-02-08 Alsthom Gec Motor with magnets
US5554900A (en) * 1994-02-04 1996-09-10 Schlenker Enterprises Ltd. Motor including embedded permanent-magnet rotor
US5771566A (en) * 1994-02-04 1998-06-30 Schlenker Enterprises Ltd. Method of manufacturing a rotor which includes embedded permanent-magnets
US6396182B1 (en) 1994-02-04 2002-05-28 Schlenker Enterprises Ltd. Motor including embedded permanent-magnet and method for making the same
US6005318A (en) * 1994-02-04 1999-12-21 Schelenker Enterprises Ltd. Motor including embedded permanent-magnet rotor and method for making the same
EP0797285A1 (en) * 1996-03-19 1997-09-24 Voith Turbo GmbH & Co. KG Rotor for an electric machine, in particular for a transversal flux machine
US6259180B1 (en) 1996-07-02 2001-07-10 Schlenker Enterprises, Ltd. Motor including embedded permanent magnet rotor and method for making the same
DE19748678C2 (en) * 1997-11-04 2002-01-24 Ni Skij I Elektrofiziceskoj Ap Electrical machine with permanent magnets and method of assembling them
DE19748678A1 (en) * 1997-11-04 1999-05-12 Ni Skij I Elektrofiziceskoj Ap Electrical machine with permanent magnets, e.g. for ships
US7893555B2 (en) 2001-09-13 2011-02-22 Wilic S.Ar.L. Wind power current generator
GB2392315A (en) * 2002-05-10 2004-02-25 Delta Invest Ltd Rotor and stator for a permanent magnet motor
US7619342B2 (en) * 2004-05-27 2009-11-17 Abb Oy Rotor for an electric machine
US7946591B2 (en) 2005-09-21 2011-05-24 Wilic S.Ar.L. Combined labyrinth seal and screw-type gasket bearing sealing arrangement
US8310122B2 (en) 2005-11-29 2012-11-13 Wilic S.A.R.L. Core plate stack assembly for permanent magnet rotor or rotating machines
US7936102B2 (en) 2005-11-29 2011-05-03 Wilic S.Ar.L Magnet holder for permanent magnet rotors of rotating machines
EP1983634A2 (en) 2007-03-27 2008-10-22 Miele &amp; Cie. KG Rotor, in particular for an electromotor of a circulating pump
DE102007015249A1 (en) 2007-03-27 2008-10-02 Miele & Cie. Kg Rotor, in particular for an electric motor of a circulating pump
WO2009093043A3 (en) * 2008-01-24 2009-12-03 Phillip Raymond Michael Denne Rotary electromagnetic machines
WO2009093043A2 (en) * 2008-01-24 2009-07-30 Phillip Raymond Michael Denne Rotary electromagnetic machines
US9312741B2 (en) 2008-06-19 2016-04-12 Windfin B.V. Wind power generator equipped with a cooling system
US8492919B2 (en) 2008-06-19 2013-07-23 Wilic S.Ar.L. Wind power generator equipped with a cooling system
US8120198B2 (en) 2008-07-23 2012-02-21 Wilic S.Ar.L. Wind power turbine
US8723383B2 (en) 2008-08-20 2014-05-13 Michelin Recherche Et Technique S.A. Interior rotor for a rotary electrical machine and method of assembling it
US20110221296A1 (en) * 2008-08-20 2011-09-15 Societe De Technologie Michelin Internal Rotor Including a Grooved Shaft Intended for a Rotary Electric Machine
US8319362B2 (en) 2008-11-12 2012-11-27 Wilic S.Ar.L. Wind power turbine with a cooling system
US8669685B2 (en) 2008-11-13 2014-03-11 Wilic S.Ar.L. Wind power turbine for producing electric energy
US8272822B2 (en) 2009-01-30 2012-09-25 Wilic S.Ar.L. Wind power turbine blade packing and packing method
US8487496B2 (en) 2009-03-10 2013-07-16 Drs Power Technology, Inc. Pole retention configuration for electric machine rotors
US7911104B2 (en) * 2009-03-10 2011-03-22 Drs Power Technology, Inc. Pole retention configuration for electric machine rotors
US8274170B2 (en) 2009-04-09 2012-09-25 Willic S.A.R.L. Wind power turbine including a cable bundle guide device
US8659867B2 (en) 2009-04-29 2014-02-25 Wilic S.A.R.L. Wind power system for generating electric energy
US8410623B2 (en) 2009-06-10 2013-04-02 Wilic S. AR. L. Wind power electricity generating system and relative control method
US8358189B2 (en) 2009-08-07 2013-01-22 Willic S.Ar.L. Method and apparatus for activating an electric machine, and electric machine
US8810347B2 (en) 2009-08-07 2014-08-19 Wilic S.Ar.L Method and apparatus for activating an electric machine, and electric machine
US8618689B2 (en) 2009-11-23 2013-12-31 Wilic S.Ar.L. Wind power turbine for generating electric energy
US8541902B2 (en) 2010-02-04 2013-09-24 Wilic S.Ar.L. Wind power turbine electric generator cooling system and method and wind power turbine comprising such a cooling system
US8937397B2 (en) 2010-03-30 2015-01-20 Wilic S.A.R.L. Wind power turbine and method of removing a bearing from a wind power turbine
US8975770B2 (en) 2010-04-22 2015-03-10 Wilic S.Ar.L. Wind power turbine electric generator and wind power turbine equipped with an electric generator
US8937398B2 (en) 2011-03-10 2015-01-20 Wilic S.Ar.L. Wind turbine rotary electric machine
US8957555B2 (en) 2011-03-10 2015-02-17 Wilic S.Ar.L. Wind turbine rotary electric machine
US9006918B2 (en) 2011-03-10 2015-04-14 Wilic S.A.R.L. Wind turbine
EP2715916A4 (en) * 2011-05-26 2016-03-23 Electric Line Uppland Ab A rotary electric machine, a rotor for a such and a vehicle/craft with such a machine
CN103647363A (en) * 2013-12-13 2014-03-19 天津瑞德科技发展有限公司 Fabricated rotor rare-earth permanent magnet torque motor
DE102014216555A1 (en) * 2014-08-20 2016-02-25 BSH Hausgeräte GmbH Rotor for an electric machine of a household appliance, household appliance and method for producing a rotor for an electrical machine of a household appliance
EP4113794A4 (en) * 2020-02-27 2023-08-09 LG Innotek Co., Ltd. Motor

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