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)

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