EP0092018B1 - Réactance, en particulier réactance isolée de l'air sans noyau magnétique - Google Patents

Réactance, en particulier réactance isolée de l'air sans noyau magnétique Download PDF

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Publication number
EP0092018B1
EP0092018B1 EP82890057A EP82890057A EP0092018B1 EP 0092018 B1 EP0092018 B1 EP 0092018B1 EP 82890057 A EP82890057 A EP 82890057A EP 82890057 A EP82890057 A EP 82890057A EP 0092018 B1 EP0092018 B1 EP 0092018B1
Authority
EP
European Patent Office
Prior art keywords
individual
individual coils
conductor
conductors
induction coil
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
EP82890057A
Other languages
German (de)
English (en)
Other versions
EP0092018A1 (fr
Inventor
Johann Mausz
Alfred Wittenhofer
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.)
Trench Austria GmbH
Original Assignee
SPEZIELEKTRA ESSLINGER KG
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 SPEZIELEKTRA ESSLINGER KG filed Critical SPEZIELEKTRA ESSLINGER KG
Priority to AT82890057T priority Critical patent/ATE17287T1/de
Priority to EP82890057A priority patent/EP0092018B1/fr
Priority to DE8282890057T priority patent/DE3268234D1/de
Publication of EP0092018A1 publication Critical patent/EP0092018A1/fr
Application granted granted Critical
Publication of EP0092018B1 publication Critical patent/EP0092018B1/fr
Expired 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
    • H01F37/00—Fixed inductances not covered by group H01F17/00
    • H01F37/005—Fixed inductances not covered by group H01F17/00 without magnetic core
    • 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
    • H01F27/2823—Wires
    • 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
    • H01F27/2823—Wires
    • H01F2027/2838—Wires using transposed wires

Definitions

  • the invention relates to a choke coil, according to the preamble of claim 1.
  • a choke coil is known from DE-C-577 650.
  • a design that is characterized by the subdivision of the required total conductor cross section into a large number of individual wires insulated from one another is used in the case of choke coils in order to minimize their eddy current losses.
  • Such choke coils are mainly used today in power engineering as compensation, filter and series choke coils.
  • the different number of turns results in unequal axial winding dimensions, hereinafter referred to as single coil height, of the individual coils, as a result of which different voltage gradients occur in the axial direction on the parallel connected individual coils. These different voltage gradients electrically stress the construction elements lying between the adjacent individual coils.
  • Eliminating this disadvantage would be possible by using different conductor dimensions to achieve the same individual coil heights of the individual coils, but is an extremely uneconomical solution due to the large number of relatively small quantities of conductor dimensions required, regardless of whether this occurs when using specialist conductors, round wires or stranded conductors ( DE-C-577 650).
  • An embodiment is known in which, based on the principle of concentrically arranged individual coils connected in parallel, these individual coils are also divided into concentrically arranged layers of graduated number of turns.
  • These layer windings consist of insulated individual wires and are wound directly on top of each other.
  • the current distribution within such directly wound, parallel-connected layer windings requires, because of the extremely high mutual inductances, number of turns, the end turns of which only cover a fraction of the entire circumference, the ends of which are usually to be routed to a common connection via a current distribution circuit made of conductive material.
  • a stranded conductor consisting of a number of insulated rectangular specialist conductors to divide the cross section within the individual coil.
  • Each of these individual wires takes on different positions in the course of the stranded conductor along its axis and therefore also lies in different induction zones of the coil, but on average all the individual conductors are subject to the same induction conditions, so that there is a uniform current distribution over all of these individual wires of the stranded conductor.
  • the stranded conductor offers the possibility of still achieving the same individual coil heights by using individual conductors of different dimensions with the same number of turns in individual cylinders, but, as already mentioned at the beginning, also provides an extremely uneconomical solution here due to the large number of relatively small quantities of conductor dimensions required
  • the magnetic field in the edge zones of the winding has a high radial component, so that high eddy current losses are caused in the individual rectangular flat conductors of the wire conductor lying transversely thereto, and therefore an optimal economic utilization of the current conductors used is not possible.
  • a choke coil according to the invention is characterized in that all individual coils consist predominantly of the same conductor bundles of the same structure and line cross section with electrically insulated and twisted individual conductors, which are pressed into rectangular shapes with different dimensions in the direction of the coil axis.
  • the width ratios of the conductor bundles change in the individual coils in accordance with the number of turns decreasing from the inside to the outside.
  • the axial voltage gradient in all individual coils is ensured by achieving the same individual coil heights, this being achieved only by pressing on different heights of one and the same conductor bundle.
  • each round individual wire in the course of the conductor bundle takes on different positions to the bundle axis and therefore also passes through different induction zones of the choke coil, which leads to a homogeneous current distribution within the conductor bundle.
  • the conductor bundle can consist of round wires insulated with lacquer, insulating powder coating, tape or foil.
  • the conductor bundle pressed into the desired cross-sectional shape has a covering made of impregnable and permeable insulating material, in particular glass fiber fabric.
  • the conductor bundle can have an electrically highly insulating insert on the side adjacent to the adjacent turn, under the sheath.
  • a choke coil according to the invention is produced by winding the conductor bundle pressed into the required shape in the dry state onto a prepared winding mandrel, axial cooling gaps between the individual cylinders being eliminated by inserting strips, preferably made of glass fiber reinforced plastic.
  • the fully wound and connected coil is subjected to impregnation as required after pre-drying and vacuum treatment, whereby the insulating resin used fills the spaces between the individual conductors of the bundle and mechanically connects adjacent coil windings and individual coils after curing in the hardening furnace.
  • Fig. 1 shows the schematic structure of a choke coil of known construction with, for example, three individual coils, using the same conductor profiles with a height h in all individual coils.
  • the current conductor 14 with the height h is used in all three individual coils 11, 12 and 13.
  • Different individual coil heights H1, H2, H3 thus result in the three individual coils 11, 12, 13 as a result of the number of turns W1, W2, W3 decreasing from the inner individual coil 11 to the outer individual coil 13.
  • There are cooling gaps 15 between the individual coils, the individual coils 11, 12, 13 are held between a press construction 16, which is also used in some cases as a current distribution cross.
  • FIG. 2 shows, for example, a choke coil according to the invention, the individual coil height H being the same in all three individual coils 21, 22, 23, although the number of turns W1, W2, W3 of the individual coils decrease from the inner individual coil 21 to the outer individual coil 23.
  • This is achieved by using conductor bundles 24a, 24b, 24c, which are pressed to different heights h1, h2, h3 in accordance with the number of turns W1, W2, W3 in the individual coils.
  • FIG. 3 shows a section through a choke coil according to the invention and FIG. 4 explains the structure of the conductor bundle used for the individual coils and its pressing in a rectangular shape.
  • the individual coils of the choke coil according to the invention are designated here by 31, 32, 33, only the lower end of the individual coils 31, 32, 33 resting on the press construction 36 being shown in the example.
  • the conductors obtained for all three individual coils 31, 32, 33 by pressing a bundle of conductors 34 into the rectangular shapes 34a, 34c, 34b, 34c are distinguished by different heights h1, h2, h3.
  • the conductor bundle 34 shown in simplified form in FIG. 4 and used as the starting product consists of a number of round individual conductors 341 provided with the insulation 342, the positions of which in the bundle of conductors have been designated 1, 2, 3, 4, 5, 6, 7. As can be seen, the individual conductors 1 to 7 change their position to the axis of the conductor bundle 34 continuously by twisting, twisting or cyclically interchanging.
  • the pressed conductor bundles 34a, 34b, 34c (Fig. 3) are provided with a covering 344 made of impregnable and permeable insulating material.
  • a covering 344 made of impregnable and permeable insulating material.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Coils Of Transformers For General Uses (AREA)
  • Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
  • Coils Or Transformers For Communication (AREA)

Claims (5)

1. Bobine d'arrêt, en particulier bobine d'arrêt isolée à sec sans noyau de fer, comportant deux ou plusieurs bobines individuelles (1, 12, 13) disposées concentriquement l'une dans l'autre en ménageant des interstices, branchées électriquement en parallèle, les bobines individuelles (21, 22, 23) présentant entre elles, indépendamment des nombres de spires qui diminuent de l'intérieur vers l'extérieur, une hauteur axiale d'enroulement (H) approximativement égale et les bobines individuelles étant bobinées en conducteurs isolés, caractérisée par le fait que toutes les bobines individuelles (21, 22, 23) sont formées principalement de faisceaux identiques (34) de conducteurs, de même constitution et de même section de conduction, comportant des conducteurs individuels (341) isolés électriquement et torsadés qui sont comprimés en des formes rectangulaires (24a, 24b, 24c, 34a, 34b, 34c) de différentes dimensions dans la direction de l'axe de la bobine.
2. Bobine d'arrêt selon la revendication 1, caractérisée par le fait que les conducteurs individuels isolés (341) formant le faisceau (34) de conducteurs sont de forme ronde et sont torsadés par câblage, torsion ou interversion cyclique, de sorte que les conducteurs individuels (341) changent de position de façon continue relativement aux axes du faisceau.
3. Bobine d'arrêt selon l'une des revendications 1 et 2, caractérisée par le fait que le faisceau (34) de conducteurs est formé de fils ronds isolés par du vernis, un revêtement de poudre, une bande ou une feuille (342).
4. Bobine d'arrêt selon l'une des revendications 1 à 3, caractérisée par le fait que le faisceau (34, 34a, 34b, 34c) de conducteurs présente une enveloppe (344) en matière isolante apte à l'imprégnation et perméable, en particulier un tissu de fibres de verre, et que la bobine est imprégnée d'une résine synthétique durcissable isolante qui remplit en même temps les espacements (345) entre les conducteurs individuels (341) du faisceau (34) de conducteurs et relie de façon mécaniquement ferme des spires de bobines voisines et des bobines individuelles aux éléments de construction déterminant les interstices (35) de refroidissement.
5. Bobine d'arrêt selon l'une des revendications 1 à 4, caractérisée par le fait que le faisceau (34) de conducteurs présente sous l'enveloppe, sur un côté appliqué contre la spire voisine, une couche (343) électriquement intercalaire très isolante.
EP82890057A 1982-04-21 1982-04-21 Réactance, en particulier réactance isolée de l'air sans noyau magnétique Expired EP0092018B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AT82890057T ATE17287T1 (de) 1982-04-21 1982-04-21 Drosselspule, insbesondere trockenisolierte drosselspule ohne eisenkern.
EP82890057A EP0092018B1 (fr) 1982-04-21 1982-04-21 Réactance, en particulier réactance isolée de l'air sans noyau magnétique
DE8282890057T DE3268234D1 (en) 1982-04-21 1982-04-21 Reactor, particularly air isolated reactor without magnetic core

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP82890057A EP0092018B1 (fr) 1982-04-21 1982-04-21 Réactance, en particulier réactance isolée de l'air sans noyau magnétique

Publications (2)

Publication Number Publication Date
EP0092018A1 EP0092018A1 (fr) 1983-10-26
EP0092018B1 true EP0092018B1 (fr) 1986-01-02

Family

ID=8190173

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82890057A Expired EP0092018B1 (fr) 1982-04-21 1982-04-21 Réactance, en particulier réactance isolée de l'air sans noyau magnétique

Country Status (3)

Country Link
EP (1) EP0092018B1 (fr)
AT (1) ATE17287T1 (fr)
DE (1) DE3268234D1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006024057A1 (fr) 2004-09-03 2006-03-09 Coil Innovation Gmbh Procede et dispositif pour la production d'un enroulement de bobine
WO2010000005A1 (fr) 2008-06-30 2010-01-07 Coil Innovation Gmbh Bobine d'arrêt pour réseaux de distribution d'énergie électrique avec émissions sonores diminuées

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2628882B1 (fr) * 1988-03-18 1995-02-17 Electro Mec Nivernais Bobinage electrique a securite contre l'incendie, et appareil electrique muni d'un tel bobinage
FR2821480B1 (fr) * 2001-02-23 2003-04-18 Alstom Cable conducteur a brins multiples mutuellement isoles avec certains brins non isoles individuellement, et bobine d'inductance pour forts courants incorporant au moins un tel cable
DE102014218874A1 (de) * 2014-09-19 2016-03-24 Forschungszentrum Jülich GmbH Spule mit hoher Güte

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE577650C (de) * 1930-05-09 1933-06-02 Aeg Magnetspule fuer grosse Stromstaerken, welche aus mehreren konzentrisch zueinander angeordneten Teilspulen mit gemeinsamen Zu- oder Ableitungen besteht
FR1198126A (fr) * 1958-06-02 1959-12-04 Acec Conducteur de bobinage pour transformateurs cuirassés-imbriqués
FR1315930A (fr) * 1961-12-15 1963-01-25 Comp Generale Electricite Enroulement pour transformateur ou bobine de self
FR2327617A1 (fr) * 1975-10-10 1977-05-06 Tocco Stel Transformateur de puissance haute-frequence a large bande
CH591151A5 (fr) * 1975-11-12 1977-09-15 Bbc Brown Boveri & Cie
US3991394A (en) * 1975-12-17 1976-11-09 General Electric Company Helical inductor for power lines and the like
JPS609650B2 (ja) * 1980-03-05 1985-03-12 株式会社日立製作所 高直列容量変圧器巻線

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006024057A1 (fr) 2004-09-03 2006-03-09 Coil Innovation Gmbh Procede et dispositif pour la production d'un enroulement de bobine
AT501074B1 (de) * 2004-09-03 2007-05-15 Coil Innovation Gmbh Verfahren und vorrichtung zum herstellen einer spulenwicklung
WO2010000005A1 (fr) 2008-06-30 2010-01-07 Coil Innovation Gmbh Bobine d'arrêt pour réseaux de distribution d'énergie électrique avec émissions sonores diminuées

Also Published As

Publication number Publication date
EP0092018A1 (fr) 1983-10-26
ATE17287T1 (de) 1986-01-15
DE3268234D1 (en) 1986-02-13

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