GB1437348A - Rotors for alternating current generators and motors - Google Patents

Rotors for alternating current generators and motors

Info

Publication number
GB1437348A
GB1437348A GB2918072A GB2918072A GB1437348A GB 1437348 A GB1437348 A GB 1437348A GB 2918072 A GB2918072 A GB 2918072A GB 2918072 A GB2918072 A GB 2918072A GB 1437348 A GB1437348 A GB 1437348A
Authority
GB
United Kingdom
Prior art keywords
poles
rotor
june
projections
steel
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.)
Expired
Application number
GB2918072A
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.)
National Research Development Corp UK
Original Assignee
National Research Development Corp UK
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 National Research Development Corp UK filed Critical National Research Development Corp UK
Priority to GB2918072A priority Critical patent/GB1437348A/en
Priority to FR7322503A priority patent/FR2189909B1/fr
Priority to DE2331801A priority patent/DE2331801C2/en
Publication of GB1437348A publication Critical patent/GB1437348A/en
Priority to US05/963,891 priority patent/USRE31950E/en
Expired 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
    • H02K1/2713—Inner rotors the magnetisation axis of the magnets being axial, e.g. claw-pole type
    • 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
    • H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
    • H02K2201/06—Magnetic cores, or permanent magnets characterised by their skew

Landscapes

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

Abstract

1437348 Core constructions NATIONAL RESEARCH DEVELOPMENT CORP 19 June 1973 [21 June 1972] 29180/72 Heading H2A The rotor of an A.C. machine comprises interdigitated poles 100, 101 magnetized by axially magnetized permanent magnet discs associated with steel discs 4, 5, 6 and 7, coupled to the poles, one end of the rotor being formed as a stabilizing region providing induction starting and preventing hunting during operation. As shown, alternate poles, 100, do not extend the full length of the rotor, the end steel disc 7 having projections 28 aligned with poles 100 so that disc 7, projections 28 and the ends of poles 101 in fact form a solid steel rotor serving as the stabilizing region and also contributing a reluctance torque during normal motoring operation.
GB2918072A 1972-06-21 1972-06-21 Rotors for alternating current generators and motors Expired GB1437348A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB2918072A GB1437348A (en) 1972-06-21 1972-06-21 Rotors for alternating current generators and motors
FR7322503A FR2189909B1 (en) 1972-06-21 1973-06-20
DE2331801A DE2331801C2 (en) 1972-06-21 1973-06-22 Synchronous machine
US05/963,891 USRE31950E (en) 1972-06-21 1978-11-27 Alternating current generators and motors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2918072A GB1437348A (en) 1972-06-21 1972-06-21 Rotors for alternating current generators and motors

Publications (1)

Publication Number Publication Date
GB1437348A true GB1437348A (en) 1976-05-26

Family

ID=10287428

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2918072A Expired GB1437348A (en) 1972-06-21 1972-06-21 Rotors for alternating current generators and motors

Country Status (4)

Country Link
US (1) USRE31950E (en)
DE (1) DE2331801C2 (en)
FR (1) FR2189909B1 (en)
GB (1) GB1437348A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2473803A1 (en) * 1980-01-10 1981-07-17 Jeumont Schneider Small motor permanent magnet rotor - has alternately stacked discs of trapezoidal cross-section magnetic material and permanent magnet discs(BR 27.7.81)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2499326A1 (en) * 1981-02-04 1982-08-06 Advolotkin Nikolai Rotor for high speed electric machine - has outer sleeve with permanent magnets attached to inner surface
US5233252A (en) * 1985-11-20 1993-08-03 Allied-Signal Motor having integral detent
US5130595A (en) * 1987-11-23 1992-07-14 Chrysler Corporation Multiple magnetic paths machine
US5111094A (en) * 1991-09-03 1992-05-05 General Motors Corporation Permanent magnet rotor having magnet retention apparatus
JP3446313B2 (en) * 1993-08-30 2003-09-16 株式会社デンソー Rotating electric machine rotor
US5793144A (en) * 1993-08-30 1998-08-11 Nippondenso Co., Ltd. Rotor for a rotating electric machine
FR2762722B1 (en) * 1997-04-23 1999-07-30 Centre Nat Rech Scient IMPROVED DOUBLE EXCITATION ELECTRIC MACHINE
US6392370B1 (en) 2000-01-13 2002-05-21 Bedini Technology, Inc. Device and method of a back EMF permanent electromagnetic motor generator
US6967425B1 (en) * 2004-07-12 2005-11-22 Ims Inc. Multi-functional electric stepper motor assembly having increased motor torque
WO2009026690A2 (en) 2007-08-24 2009-03-05 Sunco Investments Ltd. Multistage variable reluctance motor/generator
US10141821B2 (en) * 2013-09-24 2018-11-27 Denso Corporation Motor and rotor

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2632123A (en) * 1944-07-06 1953-03-17 Kober William Alternating current machine
US2784331A (en) * 1954-03-22 1957-03-05 Kollsman Instr Corp Synchronous motor
FR1164391A (en) * 1956-01-12 1958-10-08 Westinghouse Electric Corp Permanent magnet rotor
FR1198011A (en) * 1958-02-06 1959-12-04 Comp Generale Electricite Permanent magnet heteropolar alternator
DE1488702B2 (en) * 1965-08-19 1970-09-10 Siemens AG, 1000 Berlin u. 8000 München Synchronous machine with excitation windings excited in opposite directions and a winding-free rotor
FR1481150A (en) * 1966-04-04 1967-05-19 Permanent magnet inductor rotor for electric machine
GB1216836A (en) * 1967-05-02 1970-12-23 Garrard Engineering Ltd Improvements in or relating to self-starting synchronous induction electric motors
GB1246301A (en) * 1968-02-23 1971-09-15 Lucas Industries Ltd Dynamo electric machines
US3696260A (en) * 1971-08-02 1972-10-03 Motorola Inc Permanent magnet rotor structure
US3849682A (en) * 1973-06-19 1974-11-19 Nat Res Dev Permanent magnet rotor for alternating current generators and motors

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2473803A1 (en) * 1980-01-10 1981-07-17 Jeumont Schneider Small motor permanent magnet rotor - has alternately stacked discs of trapezoidal cross-section magnetic material and permanent magnet discs(BR 27.7.81)

Also Published As

Publication number Publication date
FR2189909B1 (en) 1980-08-08
FR2189909A1 (en) 1974-01-25
USRE31950E (en) 1985-07-16
DE2331801C2 (en) 1983-09-08
DE2331801A1 (en) 1974-01-17

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PE20 Patent expired after termination of 20 years

Effective date: 19930618