GB249869A - Improvements in and relating to synchronous induction electric motors - Google Patents

Improvements in and relating to synchronous induction electric motors

Info

Publication number
GB249869A
GB249869A GB8070/26A GB807026A GB249869A GB 249869 A GB249869 A GB 249869A GB 8070/26 A GB8070/26 A GB 8070/26A GB 807026 A GB807026 A GB 807026A GB 249869 A GB249869 A GB 249869A
Authority
GB
United Kingdom
Prior art keywords
salient
stepped
synchronous
angle
starting
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
GB8070/26A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co 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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB249869A publication Critical patent/GB249869A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K19/00—Synchronous motors or generators
    • H02K19/02—Synchronous motors
    • H02K19/14—Synchronous motors having additional short-circuited windings for starting as asynchronous motors

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Abstract

249,869. British Thomson-Houston Co., Ltd., (Assignees of Merrill, F. W.). March 24, 1925, [Convention date]. Alternating-current motors; pole-pieces; cores.-A synchronous-induction motor provided with a secondary member having salient poles has the tips of the poles stepped to produce a polar salient which decreases from starting to synchronous conditions. The arrangement is such that between the inactive and active iron forming the salient poles, areas exist which are of sufficiently low reluctance to carry the flux at starting but are of sufficiently high reluctance to be free of flux during synchronous running. As shown, a slotted laminated core is cut away at B to form the salient poles A, the teeth 16, 17 at the pole-tips being stepped to different depths, or in a modification they can be stepped to equal depths. The polar salient during starting conditions is represented by the angle A and at synchronism by the angle C, the angle D representing the inactive iron during synchronous running. Specification 175,084 is referred to.
GB8070/26A 1925-03-24 1926-03-24 Improvements in and relating to synchronous induction electric motors Expired GB249869A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US249869XA 1925-03-24 1925-03-24

Publications (1)

Publication Number Publication Date
GB249869A true GB249869A (en) 1926-11-25

Family

ID=21823414

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8070/26A Expired GB249869A (en) 1925-03-24 1926-03-24 Improvements in and relating to synchronous induction electric motors

Country Status (1)

Country Link
GB (1) GB249869A (en)

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