AU2002227306A1 - Permanent magnet electric machine having reduced cogging torque - Google Patents

Permanent magnet electric machine having reduced cogging torque

Info

Publication number
AU2002227306A1
AU2002227306A1 AU2002227306A AU2730602A AU2002227306A1 AU 2002227306 A1 AU2002227306 A1 AU 2002227306A1 AU 2002227306 A AU2002227306 A AU 2002227306A AU 2730602 A AU2730602 A AU 2730602A AU 2002227306 A1 AU2002227306 A1 AU 2002227306A1
Authority
AU
Australia
Prior art keywords
permanent magnet
electric machine
cogging torque
magnet electric
reduced cogging
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.)
Abandoned
Application number
AU2002227306A
Inventor
Alan Crapo
Todd Walls
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.)
Emerson Electric Co
Original Assignee
Emerson Electric 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 Emerson Electric Co filed Critical Emerson Electric Co
Publication of AU2002227306A1 publication Critical patent/AU2002227306A1/en
Abandoned legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
    • H02K29/03—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with a magnetic circuit specially adapted for avoiding torque ripples or self-starting problems

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)
AU2002227306A 2000-11-01 2001-10-30 Permanent magnet electric machine having reduced cogging torque Abandoned AU2002227306A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US09/704,183 US7245054B1 (en) 2000-11-01 2000-11-01 Permanent magnet electric machine having reduced cogging torque
US09/704,183 2000-11-01
PCT/US2001/047293 WO2002037643A2 (en) 2000-11-01 2001-10-30 Permanent magnet electric machine having reduced cogging torque

Publications (1)

Publication Number Publication Date
AU2002227306A1 true AU2002227306A1 (en) 2002-05-15

Family

ID=24828438

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2002227306A Abandoned AU2002227306A1 (en) 2000-11-01 2001-10-30 Permanent magnet electric machine having reduced cogging torque

Country Status (4)

Country Link
US (1) US7245054B1 (en)
EP (1) EP1330863A2 (en)
AU (1) AU2002227306A1 (en)
WO (1) WO2002037643A2 (en)

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WO2005067674A2 (en) * 2004-01-08 2005-07-28 Tol-O-Matic, Inc. Electric actuator
JP4626405B2 (en) 2005-06-01 2011-02-09 株式会社デンソー Brushless motor
GB0607545D0 (en) * 2006-04-18 2006-05-24 Converteam Ltd Electrical machine with reduced cogging
US8288909B2 (en) * 2006-04-18 2012-10-16 Converteam Uk Ltd Electrical machines with reduced cogging
US8860278B2 (en) * 2007-07-27 2014-10-14 GM Global Technology Operations LLC Stator assembly for belt alternator starter motor generator for hybrid vehicles
CN101572451A (en) * 2008-04-28 2009-11-04 德昌电机(深圳)有限公司 Servo motor and rotor thereof
US20100090557A1 (en) * 2008-10-10 2010-04-15 General Electric Company Fault tolerant permanent magnet machine
US20100090549A1 (en) * 2008-10-10 2010-04-15 General Electric Company Thermal management in a fault tolerant permanent magnet machine
TWI408868B (en) * 2008-12-19 2013-09-11 Ind Tech Res Inst A rotating electric machine with complementary permanent magnet structure to minimize cogging torque
US20100156226A1 (en) * 2008-12-19 2010-06-24 Gm Global Technology Operations, Inc. Brush type motor
CN102237735B (en) * 2010-03-09 2014-04-16 中山大洋电机制造有限公司 Permanent magnet rotor structure and motor applying permanent magnet rotor structure
US9871418B2 (en) 2012-11-01 2018-01-16 General Electric Company Sensorless electric machine
US9641033B2 (en) 2013-09-06 2017-05-02 General Electric Company Electric machine having offset rotor sections
US9906108B2 (en) 2012-11-01 2018-02-27 General Electric Company Sensorless electric machine
US9941775B2 (en) 2012-11-01 2018-04-10 General Electric Company D-ring implementation in skewed rotor assembly
US9287742B2 (en) 2013-08-05 2016-03-15 General Electric Company Spoke permanent magnet machine with reduced torque ripple and method of manufacturing thereof
US9906082B2 (en) 2013-09-06 2018-02-27 General Electric Company Electric machine having reduced torque oscillations and axial thrust
US20180367001A1 (en) * 2017-06-16 2018-12-20 Regal Beloit America, Inc. Stator assembly including stiffener and method of assembly thereof
US10965176B2 (en) 2019-01-15 2021-03-30 Mcmillan Electric Company Electric motors with pole biasing
TWI723493B (en) 2019-08-14 2021-04-01 財團法人工業技術研究院 Combined motor stator
CN112597738A (en) * 2020-12-23 2021-04-02 江苏上骐集团有限公司 Rotor structure for weakening cogging torque of surface-mounted permanent magnet motor and weakening analysis method
CN113541349B (en) * 2021-06-04 2022-10-14 安徽华驰动能科技有限公司 Sine wave rotor designed based on outer rotor iron core eccentric structure

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US3979821A (en) 1975-05-09 1976-09-14 Kollmorgen Corporation Method of manufacturing rare earth permanent magnet rotor
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US4845837A (en) 1986-10-06 1989-07-11 Emerson Electric Co. Method of making permanent magnet assembly
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US4953284A (en) 1988-12-15 1990-09-04 Prestolite Electric Incorporated Method for retaining a magnet within a motor assembly
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US5034642A (en) 1990-08-30 1991-07-23 Emerson Electric Co. Permanent magnet rotor and motor
US5250867A (en) 1991-11-20 1993-10-05 General Electric Company Permanent magnet brushless DC motor having reduced cogging
US5397951A (en) * 1991-11-29 1995-03-14 Fanuc Ltd. Rotor for a synchronous rotary machine
US5260620A (en) * 1992-03-09 1993-11-09 Morrill Giles W Asynchronous induction motor
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US6940205B1 (en) * 1997-09-08 2005-09-06 Matsushita Electric Industrial Co., Ltd. Permanent magnet synchronous motor
AU1931099A (en) 1997-12-23 1999-07-12 Emerson Electric Co. Electromagnetic device having encapsulated construction and precise positioning of bearing and shaft axes
JP3746372B2 (en) 1998-04-16 2006-02-15 株式会社日立製作所 Permanent magnet type rotating electric machine and electric vehicle using the same
JP2001190050A (en) * 1999-04-01 2001-07-10 Asmo Co Ltd Rotating-field type motor
JP2001314050A (en) * 2000-04-27 2001-11-09 Sony Corp Ac servo motor

Also Published As

Publication number Publication date
EP1330863A2 (en) 2003-07-30
US7245054B1 (en) 2007-07-17
WO2002037643A2 (en) 2002-05-10
WO2002037643A3 (en) 2002-10-10

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