US2450732A - Movable magnetic shunt transformer - Google Patents

Movable magnetic shunt transformer Download PDF

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Publication number
US2450732A
US2450732A US666950A US66695046A US2450732A US 2450732 A US2450732 A US 2450732A US 666950 A US666950 A US 666950A US 66695046 A US66695046 A US 66695046A US 2450732 A US2450732 A US 2450732A
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US
United States
Prior art keywords
shunts
transformer
movable magnetic
core
unwound
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 - Lifetime
Application number
US666950A
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English (en)
Inventor
Klinkhamer Hendrik Abr Wijnand
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.)
Hartford National Bank and Trust Co
Original Assignee
Hartford National Bank and Trust 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 Hartford National Bank and Trust Co filed Critical Hartford National Bank and Trust Co
Application granted granted Critical
Publication of US2450732A publication Critical patent/US2450732A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H01F29/08—Variable transformers or inductances not covered by group H01F21/00 with core, coil, winding, or shield movable to offset variation of voltage or phase shift, e.g. induction regulators
    • H01F29/10—Variable transformers or inductances not covered by group H01F21/00 with core, coil, winding, or shield movable to offset variation of voltage or phase shift, e.g. induction regulators having movable part of magnetic circuit

Definitions

  • This invention relates to a transformer, which is controllable by means of movable magnetic shunts and consists of two shell transformers in Scott's arrangement and is more particularly characterized in that the transformer cores are assembled into a five-limb core having an unwound middle core and two unwound outer cores, shunts being provided solely in the two windows adjoining the middle core in a direction normal to the lamellation of the core, which shunts are movable and are so to be fastened, by means of a clamping device, as to be free from vibration.
  • the unwound middle core may consist of two separated parts each of which forms part of a separate shell transformer.
  • the middle limb should be constructed as a .unit, as shown in the drawing.
  • the displacing device consists, in a manner known per se, .of a yoke-shaped coupling piece which is connected at its ends to the shunts and pressing piece are provided in such manner that clamping of the shunts takes place by moving the pressing piece in a longitudinal direction of the unwound middle core.
  • Fig. 1 is a plan view of a transformer according to the invention with a further feature of the invention illustrated in a sectional view;
  • Fig. 2 is a section of the transformer according to the invention .taken along the line A-A of Fig. 1.
  • the transformer consists of two shell transformers I and 2 whose windings 3, l and l, 8 are connected according to Scott.
  • the transformer cores are united to form a flve-llmbed core having an unwound middle core I and two unwound outer cores 8, 9.
  • Two movable shuntslo, H which are so to be secured as to be free from vibration by means of a clamping device, are solely provided in the two windows I2, ll-adjoining the middle core 1.
  • the shifting device consists of a handwheel with a screw spindle I5 which, by means of the nut l8 and the fastening plates I], bring the shunts l0 and II into the desired position in a direction normal to the direction of lamellation of the cores, the spindle 80 I5 resting on the housing iii of the clamping device.
  • the latter consists of two wedge-shaped members I9, 20 between which is provided anadjustable cuneiform pressing piece 2
  • the pressing piece 2! is movable, by means of a screw spindle and handwheel or another-suitable device (for the sake of simplicity not represented in the drawing) in a longitudinal direction'of the core I, i. e., into the direction of the arrow points of the arrow 40 22, as a resultof which the wedge-shaped members l9 and 20 clamp the shunts Ill and l I against the wound limbs of the transformer in such manner as to be free from humming. Consequently the screw spindle extends parallel with the unwound middle core I and may be fastened thereto,
  • a transformer which is controllable means of movable magnetic shunts comprising two shell transformers in Scotts arrangement, in which the transformer cores are united to form a five-leg core'having an unwound middle core and two unwound outer cores, movable magnetic shunts being provided solely in the two windows 5 adjoining the middle core in a direction normal to the lamellation of the core, and a clamping device securing said shunts to said transformer in a vibration-free manner, said clamping device comprising two wedge-shaped members bearing on said shunts, a. cuneiform pressing member between said wedge-shaped members, and means to position said cuneiform pressing member between said shunts to clamp said shunts to said transformer.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Coils Or Transformers For Communication (AREA)
US666950A 1942-09-17 1946-05-03 Movable magnetic shunt transformer Expired - Lifetime US2450732A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL2450732X 1942-09-17

Publications (1)

Publication Number Publication Date
US2450732A true US2450732A (en) 1948-10-05

Family

ID=19874250

Family Applications (1)

Application Number Title Priority Date Filing Date
US666950A Expired - Lifetime US2450732A (en) 1942-09-17 1946-05-03 Movable magnetic shunt transformer

Country Status (2)

Country Link
US (1) US2450732A (fr)
FR (1) FR898094A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3697912A (en) * 1968-12-24 1972-10-10 Arne Solli Welding transformers
US4086551A (en) * 1977-06-24 1978-04-25 Century Mfg. Co. Shunt positioning device
US6392521B1 (en) 2000-10-12 2002-05-21 Clinton Instrument Company Variable inductance transformer with electronic control

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2091366A (en) * 1935-06-26 1937-08-31 Philips Nv Transformer

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2091366A (en) * 1935-06-26 1937-08-31 Philips Nv Transformer

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3697912A (en) * 1968-12-24 1972-10-10 Arne Solli Welding transformers
US4086551A (en) * 1977-06-24 1978-04-25 Century Mfg. Co. Shunt positioning device
US6392521B1 (en) 2000-10-12 2002-05-21 Clinton Instrument Company Variable inductance transformer with electronic control

Also Published As

Publication number Publication date
FR898094A (fr) 1945-04-10

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