GB524904A - Improvements in and relating to electrical frequency changers - Google Patents

Improvements in and relating to electrical frequency changers

Info

Publication number
GB524904A
GB524904A GB442639A GB442639A GB524904A GB 524904 A GB524904 A GB 524904A GB 442639 A GB442639 A GB 442639A GB 442639 A GB442639 A GB 442639A GB 524904 A GB524904 A GB 524904A
Authority
GB
United Kingdom
Prior art keywords
star
relating
primary
switch
electrical frequency
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
GB442639A
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.)
E R & F Turner Ltd
Original Assignee
E R & F Turner 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 E R & F Turner Ltd filed Critical E R & F Turner Ltd
Priority to GB442639A priority Critical patent/GB524904A/en
Publication of GB524904A publication Critical patent/GB524904A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K47/00—Dynamo-electric converters
    • H02K47/18—AC/AC converters
    • H02K47/20—Motor/generators

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Multiple Motors (AREA)
  • Motor And Converter Starters (AREA)

Abstract

524,904. Control of A.C. motors; dynamoelectric machines. TURNER, Ltd., E. R. & F., and KREBS, E. W. Feb. 10, 1939, No. 4426. [Class 38 (iii)] [Also in Group XXXV] The primary 1 of the motor of a motorgenerator set is arranged for .star-delta starting by means of a switch 5, and the primary 2 of the generator is permanently connected to the terminals of the motor short-circuited in the star connection. Thus a period of variable frequency generation is avoided and the switch 5 may be held electromagnetically or mechanically in its star position until the desired speed is reached.
GB442639A 1939-02-10 1939-02-10 Improvements in and relating to electrical frequency changers Expired GB524904A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB442639A GB524904A (en) 1939-02-10 1939-02-10 Improvements in and relating to electrical frequency changers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB442639A GB524904A (en) 1939-02-10 1939-02-10 Improvements in and relating to electrical frequency changers

Publications (1)

Publication Number Publication Date
GB524904A true GB524904A (en) 1940-08-16

Family

ID=9776962

Family Applications (1)

Application Number Title Priority Date Filing Date
GB442639A Expired GB524904A (en) 1939-02-10 1939-02-10 Improvements in and relating to electrical frequency changers

Country Status (1)

Country Link
GB (1) GB524904A (en)

Similar Documents

Publication Publication Date Title
GB524904A (en) Improvements in and relating to electrical frequency changers
GB430666A (en) Electric motor means for driving machine tools or other machines
SU68656A1 (en) Device for synchronous rotation of cascades of brushless induction machines with period converters
GB251461A (en) Improvements in electrical generators
GB473796A (en) Improvements in or relating to electric motors
GB474016A (en) Improvements in and relating to the control of electric motors
GB534994A (en) Improvements in starting arrangements for induction motors
GB449164A (en) Improvements relating to induction motor control
GB934671A (en) Improvements in or relating to electric motors
GB494517A (en) Improvements in and relating to electric motors
GB392299A (en) Improvements in and relating to dynamo electric machines
GB287101A (en) Asynchronous three phase motor with asynchronous starting motor
GB508984A (en) Improvements in or relating to alternating current electric motors of the capacitor type
GB505569A (en) Improvements in or relating to electric motors
GB434903A (en) Improvements in synchronous electric drives
GB279730A (en) Constant speed drives
GB520102A (en) Improvements in synchronous dynamo electric machines
GB421978A (en) Improvements relating to synchronised induction motor control
GB483194A (en) Improvements in electric motor control systems
GB411027A (en) Improvements in and relating to electric motors
GB477683A (en) Improvements in and relating to electric motors
GB366686A (en) Improvements in and relating to electric motors
GB634335A (en) Electric shaver motors
GB511811A (en) Improvements in or relating to electric motor control systems
GB532744A (en) Improvements in and relating to electric braking control systems for electric motors