GB418174A - An improved small self-starting synchronous electric motor - Google Patents

An improved small self-starting synchronous electric motor

Info

Publication number
GB418174A
GB418174A GB8968/34A GB896834A GB418174A GB 418174 A GB418174 A GB 418174A GB 8968/34 A GB8968/34 A GB 8968/34A GB 896834 A GB896834 A GB 896834A GB 418174 A GB418174 A GB 418174A
Authority
GB
United Kingdom
Prior art keywords
pole
stator
poles
rotor
small self
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
GB8968/34A
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.)
Landis and Gyr AG
Original Assignee
Landis and Gyr AG
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 Landis and Gyr AG filed Critical Landis and Gyr AG
Publication of GB418174A publication Critical patent/GB418174A/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

418,174. Alternating-current motors. LANDIS & GYR AKT.-GES., 1, Hofstrasse, Zug, Switzerland. March 22, 1934, No. 8968. Convention date, March 31, 1933. [Class 35.] A small self-starting synchronous motor has a stator with more than two split poles and a rotor formed of a material of high coercive force without salient poles and bearing a squirrel cage winding whereby it has a speed equal to that of the rotary field. The stator comprises an iron core 1 carrying the exciting coil 15 and having at opposite ends cross - shaped pole-pieces 2, 3. Each pole is divided into two parts projecting through a copper ring 13 which has a slot 24 near one limb of each pole so that an eightpole rotary field is obtained. The rotor 16 consists of a capshaped steel member having on each side a copper ring 20 connected by copper rivets to constitute a squirrel cage winding. The flange 18 of the rotor is slit at 19 to prevent migration of the induced poles. The number of slits should not be divisible by the number of stator poles and with an eight-pole stator, the preferred number is twenty-one.
GB8968/34A 1933-03-31 1934-03-22 An improved small self-starting synchronous electric motor Expired GB418174A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH418174X 1933-03-31

Publications (1)

Publication Number Publication Date
GB418174A true GB418174A (en) 1934-10-19

Family

ID=4514633

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8968/34A Expired GB418174A (en) 1933-03-31 1934-03-22 An improved small self-starting synchronous electric motor

Country Status (1)

Country Link
GB (1) GB418174A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3675060A (en) * 1969-12-09 1972-07-04 Brian Hills Induction motors

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3675060A (en) * 1969-12-09 1972-07-04 Brian Hills Induction motors

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