EP0041884A1 - Transformateur haute tension à moyenne et basse fréquences - Google Patents

Transformateur haute tension à moyenne et basse fréquences Download PDF

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Publication number
EP0041884A1
EP0041884A1 EP81400860A EP81400860A EP0041884A1 EP 0041884 A1 EP0041884 A1 EP 0041884A1 EP 81400860 A EP81400860 A EP 81400860A EP 81400860 A EP81400860 A EP 81400860A EP 0041884 A1 EP0041884 A1 EP 0041884A1
Authority
EP
European Patent Office
Prior art keywords
transformer
transformer according
conductors
potential
magnetic circuit
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.)
Withdrawn
Application number
EP81400860A
Other languages
German (de)
English (en)
French (fr)
Inventor
Joseph Abraham
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.)
Celes SA
Original Assignee
Celes SA
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 Celes SA filed Critical Celes SA
Publication of EP0041884A1 publication Critical patent/EP0041884A1/fr
Withdrawn legal-status Critical Current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
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/08—Cooling; Ventilating
    • H01F27/10—Liquid cooling
    • H01F27/16—Water cooling
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/2876—Cooling

Definitions

  • the present invention relates to a high voltage transformer at medium and high frequencies.
  • the aperiodic generators used for high and medium frequency heating consist of two parts: on the one hand the generator itself and on the other hand an oscillating circuit which includes the inductor and the capacitors, these two parts being connected by an aperiodic transformer which constitutes the centerpiece of the generator.
  • This invention proposes to provide an aperiodic transformer which does not have the above drawbacks.
  • a high-voltage transformer at medium and high frequencies, characterized in that it consists of hollow conductors fully cooled by the circulation of a coolant and in that the windings are wound two by two in direction reverse and paralleled.
  • hollow conductors traversed by a coolant and winding in the opposite direction of the windings ensures perfect cooling of the transformer while allowing the introduction and the evacuation of the coolant to a zero potential, which removes most of the associated easements refrigerant.
  • the hollow conductors are preferably tubular conductors with circular or rectangular sections with rounded edges, having no sharp angle in order to avoid the corona effect.
  • the conductors are covered with an insulating sheath, for example in "Teflon", without any discontinuity.
  • the invention also relates to a transformer as defined above, transformed into an auto-transformer by an external connection to the magnetic circuit in order to avoid the creation of a half turn.
  • the secondary winding 1 is placed in the center of the coil, then two layers 2, 3 of the primary winding are arranged, the end of this winding being connected to the high voltage, then two other layers are wound in the opposite direction. , 5 of the primary winding and finally outside, the last layer of the secondary winding 6 is wound, in the opposite direction to layer 1.
  • Figure 2 illustrates an auto-transformer derived from the transformer shown in Figure 1.
  • the secondary winding 11 comprising a single layer is placed in the center of the coil, then two layers 12, 13 of the primary winding are arranged, the end of this winding being connected to the potential of the anode A. Then are wound in the opposite direction, two other layers 14, 15 of the primary winding and finally outside the last layer 16 of the secondary winding, wound in the opposite direction from the first layer 11.
  • This figure shows schematically at 20 the magnetic circuit.
  • the first inner turn 11 of the secondary winding is welded to a rigid copper sheet 11 'covering the entire height of the winding.
  • This copper sheet serves as a tension screen between the windings and the magnetic circuit 20.
  • the other turns of the secondary are wound around this first turn which is insulated inside and over its entire height by an insulating sheet T for example in "Teflon".
  • the last external turn 16 is produced in an identical manner.
  • the primary consists of two layers insulated from each other and from the secondary by an insulator, preferably a sheet of "Teflon" T.
  • the whole of this winding is molded in araldite.
  • the cooling of the conductors being perfect, there is no need to fear the risk of expansion, expansion which could in the long term cause cracks affecting the electrical insulation of the assembly.
  • the magnetic circuit 20 is of the battleship type: it consists of U ferrites.
  • the reverse windings can be eliminated.
  • an insulating fluid column is formed and the outer layer of the magnetic circuit winding is very carefully isolated.
  • a good result is obtained with 10 mm of araldite and 10 mm of air. In this case it is preferable to mount the whole transformer on isolation pads.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Coils Of Transformers For General Uses (AREA)
  • Transformer Cooling (AREA)
EP81400860A 1980-06-10 1981-05-27 Transformateur haute tension à moyenne et basse fréquences Withdrawn EP0041884A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8012828 1980-06-10
FR8012828A FR2484129A1 (fr) 1980-06-10 1980-06-10 Transformateur haute tension a moyenne et haute frequences

Publications (1)

Publication Number Publication Date
EP0041884A1 true EP0041884A1 (fr) 1981-12-16

Family

ID=9242893

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81400860A Withdrawn EP0041884A1 (fr) 1980-06-10 1981-05-27 Transformateur haute tension à moyenne et basse fréquences

Country Status (3)

Country Link
EP (1) EP0041884A1 (es)
ES (1) ES8203162A1 (es)
FR (1) FR2484129A1 (es)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0287307A1 (en) * 1987-04-16 1988-10-19 Erl A. Koenig An electrical circuit for inductance conductors, transformers and motors

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1382905A (en) * 1919-10-04 1921-06-28 Thomson Electric Welding Compa Cooling means for electric metal-working transformers
FR550076A (fr) * 1921-04-13 1923-02-26 D Organisation Economique Bure Dispositif de refroidissement des appareils électriques par circulation de liquide à travers les conducteurs
FR552409A (fr) * 1922-06-01 1923-05-01 Perfectionnements aux transformateurs électriques
GB630353A (en) * 1947-09-18 1949-10-11 Gen Electric Co Ltd Improvements in or relating to electric inductances
US2577825A (en) * 1946-02-04 1951-12-11 Ohio Crankshaft Co Transformer
US2817066A (en) * 1950-10-27 1957-12-17 Scarpa Giuseppe Electric transformer
US3984756A (en) * 1974-04-09 1976-10-05 Mikhail Yakovlevich Korotkov Power source for supplying stabilized current to electrical installations
FR2363874A2 (fr) * 1976-09-01 1978-03-31 Tocco Stel Transformateur de puissance haute-frequence a large bande

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1382905A (en) * 1919-10-04 1921-06-28 Thomson Electric Welding Compa Cooling means for electric metal-working transformers
FR550076A (fr) * 1921-04-13 1923-02-26 D Organisation Economique Bure Dispositif de refroidissement des appareils électriques par circulation de liquide à travers les conducteurs
FR552409A (fr) * 1922-06-01 1923-05-01 Perfectionnements aux transformateurs électriques
US2577825A (en) * 1946-02-04 1951-12-11 Ohio Crankshaft Co Transformer
GB630353A (en) * 1947-09-18 1949-10-11 Gen Electric Co Ltd Improvements in or relating to electric inductances
US2817066A (en) * 1950-10-27 1957-12-17 Scarpa Giuseppe Electric transformer
US3984756A (en) * 1974-04-09 1976-10-05 Mikhail Yakovlevich Korotkov Power source for supplying stabilized current to electrical installations
FR2363874A2 (fr) * 1976-09-01 1978-03-31 Tocco Stel Transformateur de puissance haute-frequence a large bande

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0287307A1 (en) * 1987-04-16 1988-10-19 Erl A. Koenig An electrical circuit for inductance conductors, transformers and motors
US4806834A (en) * 1987-04-16 1989-02-21 Donald Goodman Electrical circuit for inductance conductors, transformers and motors

Also Published As

Publication number Publication date
FR2484129B1 (es) 1984-01-20
ES502883A0 (es) 1982-04-01
ES8203162A1 (es) 1982-04-01
FR2484129A1 (fr) 1981-12-11

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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AK Designated contracting states

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STAA Information on the status of an ep patent application or granted ep patent

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18D Application deemed to be withdrawn

Effective date: 19821121

RIN1 Information on inventor provided before grant (corrected)

Inventor name: ABRAHAM, JOSEPH