GB1256091A - Improvements in or relating to rotary electric machines - Google Patents

Improvements in or relating to rotary electric machines

Info

Publication number
GB1256091A
GB1256091A GB2279968A GB2279968A GB1256091A GB 1256091 A GB1256091 A GB 1256091A GB 2279968 A GB2279968 A GB 2279968A GB 2279968 A GB2279968 A GB 2279968A GB 1256091 A GB1256091 A GB 1256091A
Authority
GB
United Kingdom
Prior art keywords
pole
bars
winding
phase
pole member
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
GB2279968A
Inventor
Alexander Richard Wil Broadway
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 GB2279968A priority Critical patent/GB1256091A/en
Publication of GB1256091A publication Critical patent/GB1256091A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K17/00—Asynchronous induction motors; Asynchronous induction generators
    • H02K17/02—Asynchronous induction motors
    • H02K17/12—Asynchronous induction motors for multi-phase current
    • H02K17/14—Asynchronous induction motors for multi-phase current having windings arranged for permitting pole-changing
    • 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)
  • Iron Core Of Rotating Electric Machines (AREA)

Abstract

1,256,091. Induction motors. NATIONAL RESEARCH DEVELOPMENT CORP. 14 May, 1969 [14 May, 1968], No. 22799/68. Heading H2A. The self-cascaded induction motor according to Specification 1,155,743 is modified by increasing the number of rotor bars so as to decrease the leakage reactance of the rotor winding. As shown in Fig. 6, U-shaped bars 2, 3, 4 are fitted in slots between the bars 1 of the squirrel cage and connected to one of the end rings. In another embodiment, Fig. 7 (not shown) an eleven-bar squirrel cage has a single U-shaped bar between each pair of bars. Such a winding, when subjected to a 6-pole field, produces a 22-pole cascade speed. Examples of stator windings are also given. Fig. 8 (not shown) illustrates a 3-phase winding providing two parallel paths per phase at one pole member and a multi-phase short-circuit at a second pole member. As in Specification 1,155,743, the stator winding may be D.C. excited at the second pole member to produce synchronous operation and pole-charging may be effected by pole-amplitude-modulation, Figs. 10 and 9 respectively (not shown).
GB2279968A 1968-05-14 1968-05-14 Improvements in or relating to rotary electric machines Expired GB1256091A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2279968A GB1256091A (en) 1968-05-14 1968-05-14 Improvements in or relating to rotary electric machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2279968A GB1256091A (en) 1968-05-14 1968-05-14 Improvements in or relating to rotary electric machines

Publications (1)

Publication Number Publication Date
GB1256091A true GB1256091A (en) 1971-12-08

Family

ID=10185246

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2279968A Expired GB1256091A (en) 1968-05-14 1968-05-14 Improvements in or relating to rotary electric machines

Country Status (1)

Country Link
GB (1) GB1256091A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000008736A1 (en) * 1998-08-05 2000-02-17 Vardges Sargisovich Varpetyan Induction asynchronous motor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000008736A1 (en) * 1998-08-05 2000-02-17 Vardges Sargisovich Varpetyan Induction asynchronous motor

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