IN2014DN08943A - - Google Patents

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Publication number
IN2014DN08943A
IN2014DN08943A IN8943DEN2014A IN2014DN08943A IN 2014DN08943 A IN2014DN08943 A IN 2014DN08943A IN 8943DEN2014 A IN8943DEN2014 A IN 8943DEN2014A IN 2014DN08943 A IN2014DN08943 A IN 2014DN08943A
Authority
IN
India
Prior art keywords
magnet
permanent magnet
rotor
magnetic material
rotor core
Prior art date
Application number
Inventor
Jimpo Wang
Zbigniew Piech
Original Assignee
Otis Elevator Co
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 Otis Elevator Co filed Critical Otis Elevator Co
Publication of IN2014DN08943A publication Critical patent/IN2014DN08943A/en

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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/02—Details of the magnetic circuit characterised by the magnetic material

Landscapes

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

Abstract

A rotor for a permanent magnet electric machine includes a rotor core and a plurality of permanent magnet bundles located at the rotor core. Each permanent magnet bundle includes a first magnet of a first magnetic material and a second magnet of a second magnetic material located radially outboard of the first magnet. The second magnet has an increased resistance to demagnetization relative to the first magnet. A permanent magnet electric machine includes a stator and a rotor magnetically interactive with the stator. The rotor includes a rotor core and a plurality of permanent magnet bundles located at the rotor core. Each permanent magnet bundle includes a first magnet of a first magnetic material and a second magnet of a second magnetic material located radially outboard of the first magnet. The second magnet has an increased resistance to demagnetization relative to the first magnet.
IN8943DEN2014 2012-04-16 2012-04-16 IN2014DN08943A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2012/033726 WO2013158059A1 (en) 2012-04-16 2012-04-16 Permanent magnet electric machine

Publications (1)

Publication Number Publication Date
IN2014DN08943A true IN2014DN08943A (en) 2015-05-22

Family

ID=49383837

Family Applications (1)

Application Number Title Priority Date Filing Date
IN8943DEN2014 IN2014DN08943A (en) 2012-04-16 2012-04-16

Country Status (5)

Country Link
US (1) US20150097458A1 (en)
EP (1) EP2839567A4 (en)
CN (1) CN104247213B (en)
IN (1) IN2014DN08943A (en)
WO (1) WO2013158059A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105024511A (en) * 2015-07-13 2015-11-04 东菱技术有限公司 Anti-demagnetization magnetic steel structure
CN104967226A (en) * 2015-07-28 2015-10-07 梁洪炘 Stator magnetic core, manufacturing technology therefor and brushless motor containing stator magnetic core
JP6714652B2 (en) * 2018-07-30 2020-06-24 本田技研工業株式会社 Rotating electric machine and vehicle equipped with the rotating electric machine
CN112117846A (en) * 2019-06-19 2020-12-22 上海海立电器有限公司 Special-shaped permanent magnet structure of motor rotor and compressor
US20220231585A1 (en) * 2021-01-19 2022-07-21 Mahle International Gmbh Asymmetrical skewed rotor

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3167535B2 (en) * 1994-06-21 2001-05-21 株式会社東芝 Permanent magnet type rotating electric machine
JPH08336248A (en) * 1995-06-08 1996-12-17 Matsushita Electric Ind Co Ltd Rotor with permanent magnet
FR2762722B1 (en) * 1997-04-23 1999-07-30 Centre Nat Rech Scient IMPROVED DOUBLE EXCITATION ELECTRIC MACHINE
US6274960B1 (en) * 1998-09-29 2001-08-14 Kabushiki Kaisha Toshiba Reluctance type rotating machine with permanent magnets
KR200419965Y1 (en) * 2006-04-19 2006-06-26 주식회사 에스피일레멕 Magnet rotor for motor
US20070284960A1 (en) * 2006-06-12 2007-12-13 Remy International, Inc. Magnet for a dynamoelectric machine, dynamoelectric machine and method
JP2009201259A (en) * 2008-02-21 2009-09-03 Toshiba Corp Permanent magnet type rotary electric machine, method of assembling permanent magnet type rotary electric machine, method of disassembling permanent magnet type rotary electric machine and drive system for permanent magnet electric motor
JP5161612B2 (en) * 2008-02-22 2013-03-13 株式会社東芝 Permanent magnet type rotating electrical machine, method for assembling permanent magnet type rotating electrical machine, and method for disassembling permanent magnet type rotating electrical machine
JP5159577B2 (en) * 2008-11-19 2013-03-06 株式会社東芝 Permanent magnet rotating electric machine
CN102246399B (en) * 2008-12-15 2014-04-09 株式会社东芝 Permanent magnet type rotary electrical machine
JP2010279184A (en) * 2009-05-29 2010-12-09 Daikin Ind Ltd Rotor for axial gap type rotary electric machine
US20130127280A1 (en) * 2010-07-30 2013-05-23 Hitachi, Ltd. Electric rotating machine and electric vehicle using the same
US20140091663A1 (en) * 2011-05-16 2014-04-03 Mitsubishi Electric Corporation Permanent-magnet type rotating electrical machine
US20130169098A1 (en) * 2011-12-28 2013-07-04 Remy Technologies, Llc Multi-grade magnet for an electric machine
DE112012006031A5 (en) * 2012-03-13 2015-02-26 Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg Electric machine
CN105634229B (en) * 2014-10-27 2019-01-08 通用电气公司 Magneto

Also Published As

Publication number Publication date
US20150097458A1 (en) 2015-04-09
CN104247213A (en) 2014-12-24
EP2839567A1 (en) 2015-02-25
WO2013158059A1 (en) 2013-10-24
CN104247213B (en) 2018-10-12
EP2839567A4 (en) 2016-05-11

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