WO2009060831A1 - モータ用永久磁石 - Google Patents

モータ用永久磁石 Download PDF

Info

Publication number
WO2009060831A1
WO2009060831A1 PCT/JP2008/070046 JP2008070046W WO2009060831A1 WO 2009060831 A1 WO2009060831 A1 WO 2009060831A1 JP 2008070046 W JP2008070046 W JP 2008070046W WO 2009060831 A1 WO2009060831 A1 WO 2009060831A1
Authority
WO
WIPO (PCT)
Prior art keywords
magnet
motor permanent
eddy current
flow
cover film
Prior art date
Application number
PCT/JP2008/070046
Other languages
English (en)
French (fr)
Inventor
Yasutaka Shintani
Toshiyasu Komatsu
Original Assignee
Honda Motor Co., 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 Honda Motor Co., Ltd. filed Critical Honda Motor Co., Ltd.
Priority to US12/741,316 priority Critical patent/US20100255292A1/en
Priority to EP08846624A priority patent/EP2209183B1/en
Publication of WO2009060831A1 publication Critical patent/WO2009060831A1/ja

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/02—Permanent magnets [PM]
    • H01F7/0205—Magnetic circuits with PM in general
    • H01F7/021—Construction of PM
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
    • H01F2027/348—Preventing eddy currents
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/0253—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets
    • H01F41/026—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets protecting methods against environmental influences, e.g. oxygen, by surface treatment
    • 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]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/26—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
    • Y10T428/263—Coating layer not in excess of 5 mils thick or equivalent
    • Y10T428/264—Up to 3 mils
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/32—Composite [nonstructural laminate] of inorganic material having metal-compound-containing layer and having defined magnetic layer

Landscapes

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

Abstract

　本発明の課題は、磁気特性の低下を防止しつつ、効率よく渦電流を抑制することができるモータ用永久磁石を提供することにある。本発明のモータ用永久磁石（１）は、渦電流が大きく流れようとする表面の近くに被膜（１２）を備えており、この渦電流は、磁性相（１４）間に介在する非導電性のマトリックス（１３）によって遮断されるとともに、各磁性相（１４）に小さく分散されて流れることとなる。このモータ用永久磁石（１）では、表面近くで大きくなるはずの渦電流を小さくなるように被膜（１２）が抑制する。
PCT/JP2008/070046 2007-11-06 2008-11-04 モータ用永久磁石 WO2009060831A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US12/741,316 US20100255292A1 (en) 2007-11-06 2008-11-04 Motor permanent-magnet
EP08846624A EP2209183B1 (en) 2007-11-06 2008-11-04 Motor permanent-magnet

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007288015A JP2009118619A (ja) 2007-11-06 2007-11-06 モータ用永久磁石
JP2007-288015 2007-11-06

Publications (1)

Publication Number Publication Date
WO2009060831A1 true WO2009060831A1 (ja) 2009-05-14

Family

ID=40625720

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/070046 WO2009060831A1 (ja) 2007-11-06 2008-11-04 モータ用永久磁石

Country Status (4)

Country Link
US (1) US20100255292A1 (ja)
EP (1) EP2209183B1 (ja)
JP (1) JP2009118619A (ja)
WO (1) WO2009060831A1 (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110031432A1 (en) * 2009-08-04 2011-02-10 The Boeing Company Mechanical improvement of rare earth permanent magnets

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7028152B2 (ja) * 2018-12-14 2022-03-02 トヨタ自動車株式会社 レゾルバ

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000324736A (ja) * 1999-05-12 2000-11-24 Mitsubishi Electric Corp 永久磁石型モータ
JP2002064010A (ja) 2000-08-22 2002-02-28 Shin Etsu Chem Co Ltd 高比電気抵抗性希土類磁石及びその製造方法
JP2005272714A (ja) * 2004-03-25 2005-10-06 Tokyo Magnetic Printing Co Ltd 絶縁性磁気塗料

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB574033A (en) * 1943-12-07 1945-12-18 Ernst Emil Goldschmidt Improved core construction for induction motors and like dynamo electric machines for reducing the air gap between the stator and rotor of such machines
DE69928363T2 (de) * 1998-12-25 2006-06-01 Matsushita Electric Industrial Co., Ltd., Kadoma Motor mit im Rotor eingebetteten geteilten Dauermagneten
WO2006059771A1 (ja) * 2004-12-03 2006-06-08 Nitta Corporation 電磁干渉抑制体、アンテナ装置、及び電子情報伝達装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000324736A (ja) * 1999-05-12 2000-11-24 Mitsubishi Electric Corp 永久磁石型モータ
JP2002064010A (ja) 2000-08-22 2002-02-28 Shin Etsu Chem Co Ltd 高比電気抵抗性希土類磁石及びその製造方法
JP2005272714A (ja) * 2004-03-25 2005-10-06 Tokyo Magnetic Printing Co Ltd 絶縁性磁気塗料

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP2209183A4 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110031432A1 (en) * 2009-08-04 2011-02-10 The Boeing Company Mechanical improvement of rare earth permanent magnets
US8821650B2 (en) * 2009-08-04 2014-09-02 The Boeing Company Mechanical improvement of rare earth permanent magnets

Also Published As

Publication number Publication date
US20100255292A1 (en) 2010-10-07
JP2009118619A (ja) 2009-05-28
EP2209183A4 (en) 2010-12-08
EP2209183A1 (en) 2010-07-21
EP2209183B1 (en) 2012-10-10

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