JPS57101553A - Rotary electric machine - Google Patents

Rotary electric machine

Info

Publication number
JPS57101553A
JPS57101553A JP17450280A JP17450280A JPS57101553A JP S57101553 A JPS57101553 A JP S57101553A JP 17450280 A JP17450280 A JP 17450280A JP 17450280 A JP17450280 A JP 17450280A JP S57101553 A JPS57101553 A JP S57101553A
Authority
JP
Japan
Prior art keywords
permanent magnets
remanence
smaller
electric machine
rotary electric
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.)
Pending
Application number
JP17450280A
Other languages
Japanese (ja)
Inventor
Toshio Koike
Yoshinobu Okada
Hiroshi Sugai
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP17450280A priority Critical patent/JPS57101553A/en
Publication of JPS57101553A publication Critical patent/JPS57101553A/en
Pending 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]

Landscapes

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

Abstract

PURPOSE:To miniaturize and lighten the machine by forming a field pole by arranging the first permanent magnet and a plurality of the second permanent magnets having remanence smaller than the first permanent magnet in the direction of rotation. CONSTITUTION:The rotary magnetic poles 4a, 4b are shaped by disposing the first permanent magnets 5a, 5b having large remanence and the second permanent magnets 6a, 6b having smaller remanence in the direction of rotation while holding magnetic shield plates 7. The thickness of the first permanent magnets 5a, 5b is made smaller than that of the second permanent magnets 6a, 6b and the first permanent magnets 5a, 5b and the second permanent magnets 6a, 6b are arranged to an armature 2 so that magnetic flux density reaching the armature 2 from a field system 1 by the first permanent magnets 5a, 5b is made lower than that by the second permanent magnets 6a, 6b. Accordingly, the maximum value of fundamental magnetic flux density can be enlarged, and the rotary electric machine can be miniaturized and lightened.
JP17450280A 1980-12-12 1980-12-12 Rotary electric machine Pending JPS57101553A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17450280A JPS57101553A (en) 1980-12-12 1980-12-12 Rotary electric machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17450280A JPS57101553A (en) 1980-12-12 1980-12-12 Rotary electric machine

Publications (1)

Publication Number Publication Date
JPS57101553A true JPS57101553A (en) 1982-06-24

Family

ID=15979614

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17450280A Pending JPS57101553A (en) 1980-12-12 1980-12-12 Rotary electric machine

Country Status (1)

Country Link
JP (1) JPS57101553A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004350427A (en) * 2003-05-22 2004-12-09 Denso Corp Rotating electric machine and its rotor
WO2007036453A1 (en) * 2005-09-30 2007-04-05 Robert Bosch Gmbh Permanent-magnet synchronous machine, and a production method for it
JP2009038968A (en) * 2008-11-17 2009-02-19 Denso Corp Rotary electric machine, and rotor thereof
EP2771965B1 (en) 2011-10-28 2016-12-14 Robert Bosch GmbH Electric machine, in particular ac generator
CN109756075A (en) * 2017-11-06 2019-05-14 标准微型摩打日本有限公司 motor
CN111555478A (en) * 2020-05-26 2020-08-18 安徽美芝精密制造有限公司 Motor, compressor and refrigeration plant

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004350427A (en) * 2003-05-22 2004-12-09 Denso Corp Rotating electric machine and its rotor
WO2007036453A1 (en) * 2005-09-30 2007-04-05 Robert Bosch Gmbh Permanent-magnet synchronous machine, and a production method for it
JP2009038968A (en) * 2008-11-17 2009-02-19 Denso Corp Rotary electric machine, and rotor thereof
EP2771965B1 (en) 2011-10-28 2016-12-14 Robert Bosch GmbH Electric machine, in particular ac generator
EP2771965B2 (en) † 2011-10-28 2020-01-08 SEG Automotive Germany GmbH Electric machine, in particular ac generator
CN109756075A (en) * 2017-11-06 2019-05-14 标准微型摩打日本有限公司 motor
CN111555478A (en) * 2020-05-26 2020-08-18 安徽美芝精密制造有限公司 Motor, compressor and refrigeration plant
CN111555478B (en) * 2020-05-26 2021-06-18 安徽美芝精密制造有限公司 Motor, compressor and refrigeration plant

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