NO20071989L - Elektriske maskiner med redusert cogging - Google Patents

Elektriske maskiner med redusert cogging

Info

Publication number
NO20071989L
NO20071989L NO20071989A NO20071989A NO20071989L NO 20071989 L NO20071989 L NO 20071989L NO 20071989 A NO20071989 A NO 20071989A NO 20071989 A NO20071989 A NO 20071989A NO 20071989 L NO20071989 L NO 20071989L
Authority
NO
Norway
Prior art keywords
magnetic poles
reference position
cogging
magnetic
pole
Prior art date
Application number
NO20071989A
Other languages
English (en)
Other versions
NO337148B1 (no
Inventor
Paul Eaton Clark
Original Assignee
Converteam Ltd
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 Converteam Ltd filed Critical Converteam Ltd
Publication of NO20071989L publication Critical patent/NO20071989L/no
Publication of NO337148B1 publication Critical patent/NO337148B1/no

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
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/17—Stator cores with permanent magnets
    • 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
    • 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
    • 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
    • H02K1/278—Surface mounted magnets; Inset magnets
    • H02K1/2781—Magnets shaped to vary the mechanical air gap between the magnets and the stator
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
    • H02K21/14—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
    • H02K21/22—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating around the armatures, e.g. flywheel magnetos

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)
  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)
  • Synchronous Machinery (AREA)

Abstract

Foreliggende oppfinnelse tilveiebringer en elektrisk maskin (1) med redusert cogging. Magnetpolene (3) til den elektriske maskinen innbefattes av minst to separate grupper av minst to omkretsmessig tilstøtende magnetpoler. En av de omkretsmessige ytre magnetpoler (3) i en av gruppene av magnetpoler er definert som å være i sin referanseposisjon. Referanseposisjonen til hver annen magnetpol (3) er definert som den posisjonen hver annen magnetpol vil oppta hvis alle magnetpolene var likt omkretsmessig anbrakt med mellomrom rundt det første eller andre legemet og den ene omkretsmessige ytre polen var i sin referanseposisjon. Minst en av de omkretsmessige ytre magnetpolene (3) i hver gruppe er plassert i sin referanseposisjon. Minst en magnetpol (3) i hver gruppe er en forskjøvet magnetpol og befinner seg i en posisjon som er forskyvbar fra dens referanseposisjon med en størrelse som ikke er lik et heltallsmultippel av viklingsslissenes referansevinkelsprang. Magnetpolenes (3) forskyvning tilveiebringer en uttalt reduksjon i cogging.
NO20071989A 2006-04-18 2007-04-18 Elektriske maskiner med redusert cogging NO337148B1 (no)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GBGB0607545.1A GB0607545D0 (en) 2006-04-18 2006-04-18 Electrical machine with reduced cogging

Publications (2)

Publication Number Publication Date
NO20071989L true NO20071989L (no) 2007-10-19
NO337148B1 NO337148B1 (no) 2016-02-01

Family

ID=36571858

Family Applications (1)

Application Number Title Priority Date Filing Date
NO20071989A NO337148B1 (no) 2006-04-18 2007-04-18 Elektriske maskiner med redusert cogging

Country Status (9)

Country Link
US (1) US7714473B2 (no)
EP (1) EP1848096B1 (no)
CN (1) CN101060269B (no)
AT (1) ATE515826T1 (no)
CA (1) CA2584925C (no)
DK (1) DK1848096T3 (no)
ES (1) ES2368348T3 (no)
GB (2) GB0607545D0 (no)
NO (1) NO337148B1 (no)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8541968B2 (en) 2008-03-26 2013-09-24 National Oilwell Varco Norway As Method for reducing cogging torque effects of an electrical permanent magnet machine

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8288909B2 (en) * 2006-04-18 2012-10-16 Converteam Uk Ltd Electrical machines with reduced cogging
DK2548289T3 (da) * 2010-03-15 2020-02-17 Motor Excellence Llc Tværgående og/eller kommuterede strømningssystemer med faseforskydning
FI20105661A7 (fi) * 2010-06-10 2011-12-11 Kone Corp Nostokoneiston kiinnitysjärjestely sekä hissikokoonpano
CN103124126B (zh) * 2013-03-22 2016-01-20 哈尔滨工业大学 减小齿槽效应的无轴系外转子永磁同步电动机
CN109638991A (zh) * 2018-11-30 2019-04-16 南通大学 高压永磁同步电动机定子冲片及绕线定子和电动机
US11171553B2 (en) * 2019-07-22 2021-11-09 Honeywell International Inc. High detent torque permanent magnet stepper motor

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS633638A (ja) * 1986-06-23 1988-01-08 Tamagawa Seiki Co Ltd ブラシレス直流モ−タ
US4933584A (en) * 1988-12-22 1990-06-12 General Electric Company Electronically commutated motor having skewed magnetics
JPH07194079A (ja) * 1993-12-27 1995-07-28 Matsushita Electric Ind Co Ltd 永久磁石直流モータ
JPH07336976A (ja) * 1994-06-10 1995-12-22 Fanuc Ltd 永久磁石界磁同期電動機
TW380329B (en) * 1997-04-16 2000-01-21 Japan Servo Permanent-magnet revolving electrodynamic machine with a concentrated winding stator
ES2246083T3 (es) * 1998-03-27 2006-02-01 Isa Innovations Sa Motor electrico.
US7245054B1 (en) * 2000-11-01 2007-07-17 Emerson Electric Co. Permanent magnet electric machine having reduced cogging torque
EP1217713B1 (en) * 2000-12-20 2010-02-10 Yamaha Motor Electronics Kabushiki Kaisha Permanent magnet type rotor and permanent magnet type rotary electrical machine
JP3995450B2 (ja) * 2000-12-20 2007-10-24 ヤマハモーターエレクトロニクス株式会社 永久磁石型回転電機
JP2003009440A (ja) * 2001-06-20 2003-01-10 Aichi Emerson Electric Co Ltd ブラシレスｄｃモータ
JP4240949B2 (ja) * 2002-08-09 2009-03-18 日立アプライアンス株式会社 永久磁石式回転電機の回転子
US7067948B2 (en) * 2002-10-18 2006-06-27 Mitsubishi Denki Kabushiki Kaisha Permanent-magnet rotating machine
DE10303848A1 (de) * 2003-01-30 2004-08-19 Rexroth Indramat Gmbh Drehstrommaschine mit optimierten Laufeigenschaften
JP4089527B2 (ja) * 2003-06-27 2008-05-28 三菱電機株式会社 永久磁石式回転電機

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8541968B2 (en) 2008-03-26 2013-09-24 National Oilwell Varco Norway As Method for reducing cogging torque effects of an electrical permanent magnet machine

Also Published As

Publication number Publication date
GB0707221D0 (en) 2007-05-23
US20070252466A1 (en) 2007-11-01
GB0607545D0 (en) 2006-05-24
GB2437394A (en) 2007-10-24
CN101060269A (zh) 2007-10-24
DK1848096T3 (da) 2011-09-26
CA2584925C (en) 2015-11-10
US7714473B2 (en) 2010-05-11
ATE515826T1 (de) 2011-07-15
EP1848096A2 (en) 2007-10-24
ES2368348T3 (es) 2011-11-16
CA2584925A1 (en) 2007-10-18
NO337148B1 (no) 2016-02-01
EP1848096B1 (en) 2011-07-06
CN101060269B (zh) 2012-07-04
EP1848096A3 (en) 2009-07-29

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Legal Events

Date Code Title Description
CREP Change of representative

Representative=s name: ZACCO NORWAY AS, POSTBOKS 2003 VIKA, 0125 OSLO

CREP Change of representative

Representative=s name: BRYN AARFLOT AS, POSTBOKS 449 SENTRUM, 0104 OSLO

MM1K Lapsed by not paying the annual fees