GB825688A - Improvements in magnetic amplifiers - Google Patents

Improvements in magnetic amplifiers

Info

Publication number
GB825688A
GB825688A GB31819/57A GB3181957A GB825688A GB 825688 A GB825688 A GB 825688A GB 31819/57 A GB31819/57 A GB 31819/57A GB 3181957 A GB3181957 A GB 3181957A GB 825688 A GB825688 A GB 825688A
Authority
GB
United Kingdom
Prior art keywords
saturable
windings
core
cores
winding
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
GB31819/57A
Inventor
Fred W Kelley Jr
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
Original Assignee
General Electric Co
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 filed Critical General Electric Co
Publication of GB825688A publication Critical patent/GB825688A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F29/00—Variable transformers or inductances not covered by group H01F21/00
    • H01F29/14—Variable transformers or inductances not covered by group H01F21/00 with variable magnetic bias
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/10—Regulating voltage or current
    • G05F1/12—Regulating voltage or current wherein the variable actually regulated by the final control device is ac
    • G05F1/32—Regulating voltage or current wherein the variable actually regulated by the final control device is ac using magnetic devices having a controllable degree of saturation as final control devices
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
    • H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
    • H02M7/06—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes without control electrode or semiconductor devices without control electrode
    • H02M7/066—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes without control electrode or semiconductor devices without control electrode particular circuits having a special characteristic
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F9/00—Magnetic amplifiers
    • H03F9/04—Magnetic amplifiers voltage-controlled, i.e. the load current flowing in only one direction through a main coil, e.g. Logan circuits
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F29/00—Variable transformers or inductances not covered by group H01F21/00
    • H01F29/14—Variable transformers or inductances not covered by group H01F21/00 with variable magnetic bias
    • H01F2029/143—Variable transformers or inductances not covered by group H01F21/00 with variable magnetic bias with control winding for generating magnetic bias

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Ac-Ac Conversion (AREA)
  • Rectifiers (AREA)
  • Amplifiers (AREA)

Abstract

825,688. Magnetic amplifiers. GENERAL ELECTRIC CO. Oct. 11, 1957 [Oct. 16, 1956], No. 31819/57. Class 40 (9). [Also in Group XXXV] A magnetic amplifier comprises three magnetic cores of which two are saturable, three windings each embracing a different pair of the cores, and a further winding carried by the non-saturable core. As shown in Fig. 1, saturable cores 7, 8 are associated with a control winding 3 and power windings 10a, 10b which are connected with rectifiers 11, 12 in auto-self-excited parallel relationship to an A.C. supply 1, the non- saturable core 6 and its further winding 9 providing a transformer coupling to a load 2. In a modification, Fig. 3, the load 15 and the A.C. supply 23 are interchanged and a unidirectional output is obtained over rectifiers 13, 14. Alternatively a full-wave rectifying bridge comprising elements 27-30 may be used, Fig. 4. A core and winding strutture suitable for any of these embodiments is shown in Fig. 2, and comprises saturable cores 7<1> 8<1> either side of a non-saturable core 6<1>, the windings 3 and 9 being divided into equal portions 3a, 3b and 9a, 9b. Three transducers 34, 342, 343, Fig. 5, each as shown in Fig. 3, may have their further windings 38, 382, 383, connected in delta to a three-phase supply 32 and their output circuits connected over rectifiers such as 42, 43 to a common load 31. In a modification, Fig. 6, the common connection between the windings 53, 54; 532, 542; 533, 543 are brought out to terminals 57 which may be either short-circuited or connected in additive relationship to the three-phase supply. A suitable three-phase core and winding structure is shown in Fig. 7 in which the non- saturable cores are constituted by a spiralwound, three-limbed core structure 60, while the saturable cores such as 69, 70 are supported by windings 67, 68 with each limb of the core structure pertaining to a different phase.
GB31819/57A 1956-10-16 1957-10-11 Improvements in magnetic amplifiers Expired GB825688A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US616311A US2870397A (en) 1956-10-16 1956-10-16 Saturable core transformer

Publications (1)

Publication Number Publication Date
GB825688A true GB825688A (en) 1959-12-16

Family

ID=24468892

Family Applications (1)

Application Number Title Priority Date Filing Date
GB31819/57A Expired GB825688A (en) 1956-10-16 1957-10-11 Improvements in magnetic amplifiers

Country Status (5)

Country Link
US (1) US2870397A (en)
DE (1) DE1065883B (en)
FR (1) FR1184384A (en)
GB (1) GB825688A (en)
NL (1) NL105037C (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3343074A (en) * 1964-07-07 1967-09-19 Hunterdon Transformer Co Toroidal variable reactance transformer having two saturable cores
US3428920A (en) * 1966-11-29 1969-02-18 Adams Russel Co Inc N-way electrical power divider wherein n is an odd number
US3505588A (en) * 1968-03-27 1970-04-07 Elwood M Brock Load impedance responsive feedback for variable reactance transformer
US3832661A (en) * 1971-11-29 1974-08-27 R Sato Transformer
US4019123A (en) * 1973-09-18 1977-04-19 Westinghouse Brake And Signal Co. Ltd. Magnetic amplifier arrangements
US4327348A (en) * 1977-05-20 1982-04-27 Tdk Electronics Co., Ltd. Variable leakage transformer
US4470006A (en) * 1982-09-30 1984-09-04 Drapp Joseph W Transformer
US4639610A (en) * 1985-12-10 1987-01-27 Westinghouse Electric Corp. Rotating flux transformer
US5789907A (en) * 1991-03-29 1998-08-04 Top Gulf Coast Corporation Variable impedence transformer
GB9304132D0 (en) * 1993-03-01 1993-04-14 Tunewell Transformers Ltd Improvements in or relating to an electrical arrangement
TW200926217A (en) * 2007-12-06 2009-06-16 Ming-Yue Jiang Apparatus for regenerating power using current magnetic field energy of power cord

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2216631A (en) * 1939-07-12 1940-10-01 Union Switch & Signal Co Railway traffic controlling apparatus
US2745056A (en) * 1953-05-04 1956-05-08 Marcel B Zucchino Magnetic amplifier circuit
US2762969A (en) * 1954-03-23 1956-09-11 Hughes Aircraft Co Magnetic phase and amplitude controller

Also Published As

Publication number Publication date
US2870397A (en) 1959-01-20
FR1184384A (en) 1959-07-21
NL105037C (en) 1900-01-01
DE1065883B (en) 1959-09-24

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