GB855450A - Improvements in or relating to self-starting synchronous electric motors - Google Patents

Improvements in or relating to self-starting synchronous electric motors

Info

Publication number
GB855450A
GB855450A GB3448357A GB3448357A GB855450A GB 855450 A GB855450 A GB 855450A GB 3448357 A GB3448357 A GB 3448357A GB 3448357 A GB3448357 A GB 3448357A GB 855450 A GB855450 A GB 855450A
Authority
GB
United Kingdom
Prior art keywords
field
poles
self
starting synchronous
span
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
GB3448357A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB3448357A priority Critical patent/GB855450A/en
Publication of GB855450A publication Critical patent/GB855450A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C15/00—Clocks driven by synchronous motors
    • G04C15/0009—Clocks driven by synchronous motors without power-reserve
    • G04C15/0027—Clocks driven by synchronous motors without power-reserve provided with automatic-starting device

Abstract

855,450. A.C. motors. MIDGLEY, A. H. Oct. 14, 1958 [Nov. 5, 1957], No. 34483/57. Class 35. In a self-starting synchronous motor comprising a field structure 2 which includes two sets of annularly arranged interspaced field poles 3, 4 of opposite instantaneous polarity when energized, each pole N, S of a two-pole permanent magnet rotor 1 is arranged to span at least five field poles and is divided into at least three sub poles 7 ... 9 in such a way that the polar angle between two adjacent sub poles is less than that between two adjacent stator field poles of like polarity whereby the angle of span of each subpole is so arranged that when the field is deenergized the rotor assumes an idle position of minimum reluctance and when energized immediately starts into rotation. As shown, the division is by radial slots 5 and the field structure comprises a cylindrical casing 10 and a coil 12.
GB3448357A 1957-11-05 1957-11-05 Improvements in or relating to self-starting synchronous electric motors Expired GB855450A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3448357A GB855450A (en) 1957-11-05 1957-11-05 Improvements in or relating to self-starting synchronous electric motors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3448357A GB855450A (en) 1957-11-05 1957-11-05 Improvements in or relating to self-starting synchronous electric motors

Publications (1)

Publication Number Publication Date
GB855450A true GB855450A (en) 1960-11-30

Family

ID=10366201

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3448357A Expired GB855450A (en) 1957-11-05 1957-11-05 Improvements in or relating to self-starting synchronous electric motors

Country Status (1)

Country Link
GB (1) GB855450A (en)

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