GB1113095A - Improvements in or relating to rotary electric machines - Google Patents

Improvements in or relating to rotary electric machines

Info

Publication number
GB1113095A
GB1113095A GB3829365A GB3829365A GB1113095A GB 1113095 A GB1113095 A GB 1113095A GB 3829365 A GB3829365 A GB 3829365A GB 3829365 A GB3829365 A GB 3829365A GB 1113095 A GB1113095 A GB 1113095A
Authority
GB
United Kingdom
Prior art keywords
pole
stator
motor
running
induction
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
GB3829365A
Inventor
Gordon Hindle Rawcliffe
William Fong
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 GB3829365A priority Critical patent/GB1113095A/en
Publication of GB1113095A publication Critical patent/GB1113095A/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)
  • Control Of Multiple Motors (AREA)

Abstract

1,113,095. Induction motors. NATIONAL RESEARCH DEVELOPMENT CORPORATION. 30 Aug., 1966 [8 Sept., 1965], No. 38293/65. Heading H2A. A squirrel-cage induction motor is caused to crawl at a speed depending on the number of rotor bars instead of running in accordance with the stator pole-number as is usual, by providing the rotor with a large number of bars, preferably twice the number of stator slots plus the stator pole-number. The machine then runs synchronously as if it had this number of poles, i.e. equal to twice the number of stator slots plus the stator pole-number. The stator may be provided with an alternative higher pole number, e.g. by pole-amplitude modulation. In this case, the use of the alternative polenumber over-rides the reluctance crawling effect and produces normal induction running at this pole-number. Now, if the first, lower pole-number is re-energized, the motor again accelerates to run normally at this speed. Further pole-numbers may be added. The motor is suitable for winches needing three speeds.
GB3829365A 1965-09-08 1965-09-08 Improvements in or relating to rotary electric machines Expired GB1113095A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3829365A GB1113095A (en) 1965-09-08 1965-09-08 Improvements in or relating to rotary electric machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3829365A GB1113095A (en) 1965-09-08 1965-09-08 Improvements in or relating to rotary electric machines

Publications (1)

Publication Number Publication Date
GB1113095A true GB1113095A (en) 1968-05-08

Family

ID=10402512

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3829365A Expired GB1113095A (en) 1965-09-08 1965-09-08 Improvements in or relating to rotary electric machines

Country Status (1)

Country Link
GB (1) GB1113095A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2456416A1 (en) * 1979-05-07 1980-12-05 Od Polt Institut Two-speed motor winding - has groups of coils non-uniformly distributed in slots for pole change compensation

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2456416A1 (en) * 1979-05-07 1980-12-05 Od Polt Institut Two-speed motor winding - has groups of coils non-uniformly distributed in slots for pole change compensation

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