GB1133062A - Improvements in or relating to rotary electric machines - Google Patents

Improvements in or relating to rotary electric machines

Info

Publication number
GB1133062A
GB1133062A GB2995066A GB2995066A GB1133062A GB 1133062 A GB1133062 A GB 1133062A GB 2995066 A GB2995066 A GB 2995066A GB 2995066 A GB2995066 A GB 2995066A GB 1133062 A GB1133062 A GB 1133062A
Authority
GB
United Kingdom
Prior art keywords
phases
windings
pole
slots
winding
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
GB2995066A
Inventor
William Fong
Gordon Hindle Rawcliffe
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 GB2995066A priority Critical patent/GB1133062A/en
Publication of GB1133062A publication Critical patent/GB1133062A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
    • H02K3/28—Layout of windings or of connections between windings

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Windings For Motors And Generators (AREA)

Abstract

1,133,062. Winding layouts for dynamoelectric machines. NATIONAL RESEARCH DEVELOPMENT CORP. 30 June, 1967 [4 July, 1966], No. 29950/66. Heading H2A. In a machine having pole-changing by means of pole-amplitude modulation, the relative balance of the three phases is improved by the use of two or three similar windings mutually displaced by a phase position so that the imbalances cancel out. If three identical windings are connected in different positions to the three phases of the supply, the resultant impedances of the phases will be identical and the load perfectly balanced. In cases in which the slotnumber is divisible by 3, the winding is arranged as three separate units which are connected together. For example, if a change-pole winding in 60 slots is required, this is wound as three windings each in 20 slots. Since it is not possible to distribute 20 slots equally between three phases, it is necessary to use an unsymmetrical coil grouping. But by interleaving the other two windings in every third slot, the imbalance is greatly reduced. Various other arrangements are described.
GB2995066A 1966-07-04 1966-07-04 Improvements in or relating to rotary electric machines Expired GB1133062A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2995066A GB1133062A (en) 1966-07-04 1966-07-04 Improvements in or relating to rotary electric machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2995066A GB1133062A (en) 1966-07-04 1966-07-04 Improvements in or relating to rotary electric machines

Publications (1)

Publication Number Publication Date
GB1133062A true GB1133062A (en) 1968-11-06

Family

ID=10299840

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2995066A Expired GB1133062A (en) 1966-07-04 1966-07-04 Improvements in or relating to rotary electric machines

Country Status (1)

Country Link
GB (1) GB1133062A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2416721A1 (en) * 1973-04-13 1974-10-24 Nat Res Dev SPEED SWITCHABLE THREE-PHASE AC MACHINE FOR USE AS A MOTOR OR GENERATOR
US4013909A (en) * 1972-11-03 1977-03-22 National Research Development Corporation Electric motors
DE2849761A1 (en) * 1978-11-16 1980-05-22 Novokachovskij Elmash-Str Z No Pole changing three=phase two layer winding for electromotor - has two sets of terminals and unsymmetrical winding group distribution to improve utilisation factors at low and high speeds

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4013909A (en) * 1972-11-03 1977-03-22 National Research Development Corporation Electric motors
DE2416721A1 (en) * 1973-04-13 1974-10-24 Nat Res Dev SPEED SWITCHABLE THREE-PHASE AC MACHINE FOR USE AS A MOTOR OR GENERATOR
DE2849761A1 (en) * 1978-11-16 1980-05-22 Novokachovskij Elmash-Str Z No Pole changing three=phase two layer winding for electromotor - has two sets of terminals and unsymmetrical winding group distribution to improve utilisation factors at low and high speeds

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