GB359207A - Improvements in or relating to electric motors - Google Patents

Improvements in or relating to electric motors

Info

Publication number
GB359207A
GB359207A GB3153930A GB3153930A GB359207A GB 359207 A GB359207 A GB 359207A GB 3153930 A GB3153930 A GB 3153930A GB 3153930 A GB3153930 A GB 3153930A GB 359207 A GB359207 A GB 359207A
Authority
GB
United Kingdom
Prior art keywords
bars
motor
running
resistances
connections
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
GB3153930A
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.)
General Electric Co PLC
Original Assignee
General Electric Co PLC
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 General Electric Co PLC filed Critical General Electric Co PLC
Priority to GB3153930A priority Critical patent/GB359207A/en
Publication of GB359207A publication Critical patent/GB359207A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Tyre Moulding (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)

Abstract

359,207. Induction motors. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London, and SAUNDERS, N. F. T., of General Electric Co., Witton, Birmingham. Oct. 21, 1930, No. 31539. [Class 35.] The bars of a squirrelcage motor having stator windings adapted to give different pole numbers are divided into groups so connected through resistances that when the motor is running on a low-pole number the effective resistance of the winding is greater than when running on a high-pole number, the object being to give more effective braking in motors used for lifts and like purposes. Fig. 1 is a diagram of connections for a motor having 32 bars and stator windings for four and eight poles. The bars are divided into groups of eight alternately connected to end rings 5, 7 at one end and 6, 8 at the other, the end rings being connected through resistances 9 .. 12. The single arrows show the course of the current when the motor is running on four poles and the double arrows when it is running on eight. Fig. 4 shows the construction of the connections. The bars 53 of one set project beyond those of the other and are braced to a ring 49. The bars of the other set are connected to a smaller ring 50 through arcuate packing pieces 56. The resistances are constituted by strips of sheet metal 52 extending from a ring 51 to the rings 49, 50. Connections for a motor having 32 bars and four, eight, or sixteen poles are also described.
GB3153930A 1930-10-21 1930-10-21 Improvements in or relating to electric motors Expired GB359207A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3153930A GB359207A (en) 1930-10-21 1930-10-21 Improvements in or relating to electric motors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3153930A GB359207A (en) 1930-10-21 1930-10-21 Improvements in or relating to electric motors

Publications (1)

Publication Number Publication Date
GB359207A true GB359207A (en) 1931-10-22

Family

ID=10324610

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3153930A Expired GB359207A (en) 1930-10-21 1930-10-21 Improvements in or relating to electric motors

Country Status (1)

Country Link
GB (1) GB359207A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2808552A (en) * 1954-04-05 1957-10-01 Everett P Larsh Induction motor and control
US2828457A (en) * 1954-04-05 1958-03-25 Louis R Mahrt Motor control
US2899618A (en) * 1959-08-11 Induction motor and control
AT399624B (en) * 1990-05-15 1995-06-26 Elin Energieversorgung Device for switching between rotor windings of electrical machines

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2899618A (en) * 1959-08-11 Induction motor and control
US2808552A (en) * 1954-04-05 1957-10-01 Everett P Larsh Induction motor and control
US2828457A (en) * 1954-04-05 1958-03-25 Louis R Mahrt Motor control
AT399624B (en) * 1990-05-15 1995-06-26 Elin Energieversorgung Device for switching between rotor windings of electrical machines

Similar Documents

Publication Publication Date Title
JPS5386418A (en) Dc motor
US2279690A (en) Combination motor generator
DK109154C (en) DC motor with a preferably permanent magnetic rotor and at least two groups of stator coils.
GB359207A (en) Improvements in or relating to electric motors
GB436145A (en) Improvements in and relating to synchronous electric motors
GB1389983A (en) Electric synchronous motor
GB1318068A (en) Synchronous electric motor
GB471113A (en) Improvements in or relating to induction motors
GB867659A (en) Improvements in or relating to self-starting synchronous electric motors
GB358240A (en) Improvements in dynamo electric machines
DE528381C (en) Electric machine with radial air ducts in the runner and stand
DE656276C (en) Short-circuit rotor for self-starting synchronous motors
GB175084A (en) Improvements in and relating to dynamo electric machines
GB568395A (en) Improvements in or relating to dynamo electric machines
US934462A (en) Electric motor.
DE476808C (en) Synchronously rotating rectifier
GB451569A (en) Improvements in and relating to electric motors
GB404935A (en) Improvements in electric motors
AT116003B (en) Synchronously rotating rectifier.
GB621309A (en) Improvements in and relating to electric motors
GB1189760A (en) Direct-Current Machine.
GB1121239A (en) Induction motor with short-circuited armature
GB1338308A (en) Electric stepping motor
FR2362523A1 (en) QUADRUPLE FREQUENCY CONVERTER
GB337906A (en) Improvements in electric motors