GB315045A - Improvements relating to dynamo electric machines - Google Patents

Improvements relating to dynamo electric machines

Info

Publication number
GB315045A
GB315045A GB1381628A GB1381628A GB315045A GB 315045 A GB315045 A GB 315045A GB 1381628 A GB1381628 A GB 1381628A GB 1381628 A GB1381628 A GB 1381628A GB 315045 A GB315045 A GB 315045A
Authority
GB
United Kingdom
Prior art keywords
retentivity
steel
component
pole
stampings
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
GB1381628A
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.)
Associated Electrical Industries Ltd
Original Assignee
Associated Electrical Industries 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 Associated Electrical Industries Ltd filed Critical Associated Electrical Industries Ltd
Priority to GB1381628A priority Critical patent/GB315045A/en
Publication of GB315045A publication Critical patent/GB315045A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K23/00—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors
    • H02K23/02—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors characterised by arrangement for exciting

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Linear Motors (AREA)

Abstract

315,045. Eastwood, F. A., and Associated Electrical Industries, Ltd. May 10, 1928. Pole-pieces, cores, yokes, and carcass structures.-In a dynamo in which a portion of the magnetic circuit is formed of high retentivity I material, such as permanent magnet steel, with a' permanent flux in order to secure a rapid building up of the machine volts, loss of flux in the high retentivity component is minimized by separating this component in each pole from a component of low retentivity by means of a non- magnetic layer. In the form shown shown in Fig. 1, the yoke 3 has poles each comprising a portion 5 of sheet steel stampings of the usual kind and a portion 6 of high retentivity permanent magnet material, the two portions forming independent magnetic circuits which are separated by a layer 7 of nonmagnetic material. The field windings embrace the whole of the composite poles. Fig. 3 shows a form in which a tungsten steel or similar portion 6 is adapted to be attached to the yoke independently of the low retentivity stampings 5 and brass laminae 10 by means of a nonmagnetic bolt which takes into a drilling 12. The depth of the portion 6 may be slightly greater than that of the portion 5. In other forms, the high retentivity portion is laminated or it may consist of two pieces of ordinary magnet steel separated by an insert of high -retentivity steel.
GB1381628A 1928-05-10 1928-05-10 Improvements relating to dynamo electric machines Expired GB315045A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1381628A GB315045A (en) 1928-05-10 1928-05-10 Improvements relating to dynamo electric machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1381628A GB315045A (en) 1928-05-10 1928-05-10 Improvements relating to dynamo electric machines

Publications (1)

Publication Number Publication Date
GB315045A true GB315045A (en) 1929-07-11

Family

ID=10029897

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1381628A Expired GB315045A (en) 1928-05-10 1928-05-10 Improvements relating to dynamo electric machines

Country Status (1)

Country Link
GB (1) GB315045A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2990508A (en) * 1956-12-10 1961-06-27 Fidelity Electric Company Inc Synchronous alternator system
US3250973A (en) * 1962-04-10 1966-05-10 Edward F Dawson Permanent magnet field generator fed motor control as a torque converter
US5130590A (en) * 1991-04-03 1992-07-14 Tamagawa Seiki Kabushiki Kaisha Brushless generator regulated by second rotor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2990508A (en) * 1956-12-10 1961-06-27 Fidelity Electric Company Inc Synchronous alternator system
US3250973A (en) * 1962-04-10 1966-05-10 Edward F Dawson Permanent magnet field generator fed motor control as a torque converter
US5130590A (en) * 1991-04-03 1992-07-14 Tamagawa Seiki Kabushiki Kaisha Brushless generator regulated by second rotor

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