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EP1902451B1 - Bobine a inductance variable pour applications d'eclairage - Google Patents

Bobine a inductance variable pour applications d'eclairage Download PDF

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Publication number
EP1902451B1
EP1902451B1 EP06791529.8A EP06791529A EP1902451B1 EP 1902451 B1 EP1902451 B1 EP 1902451B1 EP 06791529 A EP06791529 A EP 06791529A EP 1902451 B1 EP1902451 B1 EP 1902451B1
Authority
EP
European Patent Office
Prior art keywords
winding
air gap
swinging choke
core
choke according
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.)
Not-in-force
Application number
EP06791529.8A
Other languages
German (de)
English (en)
Other versions
EP1902451A1 (fr
Inventor
Gerhard Karl
Walter Blaschke
Dietmar KROPFMÜLLER
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.)
Sumida Components and Modules GmbH
Original Assignee
Sumida Components and Modules GmbH
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 Sumida Components and Modules GmbH filed Critical Sumida Components and Modules GmbH
Publication of EP1902451A1 publication Critical patent/EP1902451A1/fr
Application granted granted Critical
Publication of EP1902451B1 publication Critical patent/EP1902451B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/32—Insulating of coils, windings, or parts thereof
    • H01F27/324—Insulation between coil and core, between different winding sections, around the coil; Other insulation structures
    • H01F27/326—Insulation between coil and core, between different winding sections, around the coil; Other insulation structures specifically adapted for discharge lamp ballasts
    • 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
    • H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
    • H01F27/38—Auxiliary core members; Auxiliary coils or windings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/08—High-leakage transformers or inductances
    • H01F38/10—Ballasts, e.g. for discharge lamps

Definitions

  • Such oscillating chokes can be used to high voltage pulses in a resonant circuit for igniting a light source, such.
  • a light source such as fluorescent tubes, gas discharge lamps or arc lamps to produce.
  • the ignition voltage can be several 1000 volts ss in the case of fluorescent tubes.
  • At least one further voltage in the low-voltage range is available for one or more auxiliary circuits.
  • voltages are typically required in the range of 5 to 15 volts, which must be maintained relatively accurately, otherwise parts of the heater could be damaged, or the life of the lamp could be reduced.
  • a swinging choke according to claim 1 having a winding body, a core which is inserted in the winding body such that the core forms an air gap in the winding body, at least one main winding which is wound on the winding body and designed for high voltage is, and at least one auxiliary winding whose number of turns is designed so that a low voltage can be tapped and which is arranged along the air gap. Further, the invention provides a drive for a lighting device that uses such a swing throttle.
  • the supply of an auxiliary circuit, for. B. a heater allows. Since there are very high voltages at the main winding and the voltage on the auxiliary winding should be comparatively very low (for example in the range of 5 to 15 volts), very few windings are required for the auxiliary winding (1 to 5 turns). It follows that the few turns of the auxiliary winding have a large positioning latitude in the winding chamber. Since, due to inhomogeneities of the core and stray fields, the inductance of the auxiliary winding depends strongly on the position of the auxiliary winding in the winding chamber, it is difficult to reproduce an auxiliary winding with a defined inductance and thus with a definable voltage that can be tapped.
  • the inductance of the auxiliary winding changes parabolic with the distance to the air gap. This means that the position dependency of the inductance is lowest in the vicinity of the air gap.
  • An arrangement of the auxiliary winding as close as possible to or above the air gap therefore solves the problem of large manufacturing tolerances and serial loyalty for a swinging choke with auxiliary winding.
  • the winding body has a dividing wall, whereby the winding body is subdivided into two winding chambers.
  • the partition wall is arranged circumferentially along the air gap, so that the first and the second main winding each enclose a center leg of one of the two E-shaped cores and the partition surrounds the air gap.
  • the potential difference between the uppermost layer of the main winding in a winding chamber and the properly arranged auxiliary winding is correspondingly lower, so that the risk of a rollover between the main winding and the auxiliary winding is lower.
  • the advantage of this arrangement is that the auxiliary winding can be positioned more accurately over the air gap and thereby an even lower positional dependence of the inductance can be achieved.
  • two auxiliary windings are arranged symmetrically to the air gap and in the immediate vicinity of the air gap.
  • the gauge of the thickness of the air gap is 1.4 mm. This measure is suitable for a choke in a ballast for igniting and operating bulbs.
  • the dividing wall has a thickness of 1.5 mm. Also, this measure proved to be suitable for a swinging choke for use in a ballast for igniting and operating a bulb.
  • At least one of the electrodes of the abovementioned light-emitting means is heated via the voltage which is tapped off at the auxiliary winding. This improves the life of the lamp.
  • the two-piece core may be realized by two sub-shells having a U-shaped cross-section or a sub-core having a U-shaped cross section and a sub-core having an I-shaped cross section.
  • a double-L-core is possible.
  • the split cores can be symmetrical or non-symmetric.
  • the winding body is not limited to winding body with several winding chambers. Depending on the height of the operating voltage and the insulation of the winding wires and wound body with only one winding chamber are possible.
  • the outer legs 5a, 5b, 6a and 6b and the middle legs 7a, 7b are of cuboid design.
  • the winding body 1 may also have a cuboidal basic structure.
  • the winding body 1 is made of a non-metallic and non-conductive material or of a magnetically non-active material, preferably made of a plastic by injection molding. But there are also other materials such as ceramic usable.
  • the core 4a, 4b preferably contains a ferromagnetic material.
  • the auxiliary winding was wound adjacent to the dividing wall 2, the auxiliary winding is in the greatest possible proximity to the air gap, whereby a very low production spread of the production can be achieved and the auxiliary windings are arranged symmetrically to the air gap and thus can deliver as accurate as possible same voltage.
  • the invention already has its effect when the auxiliary winding over the main winding in the first third, preferably a quarter, most preferably one-eighth, the winding chamber on the partition wall (2) facing side is wound.
  • Fig. 2 shows a diagram in which the inductance L as a function of the distance S in the axial direction with respect to a winding axis A between the air gap 10 and the Hitfswicklung 9 is shown.
  • the distance dependence of the inductance L has a parabolic shape with the minimum of the parabola in the center of the air gap. This means that the distance dependence of the inductance L at the air gap 10 is lowest since the slope dL / da at the vertex of the parabola is zero.
  • Fig. 3 shows a section through an exemplary swing throttle, wherein the winding body 1 is divided into two winding chambers 3a and 3b by a partition wall 2. As a result, the main winding is divided into a first partial main winding 8a and a second partial main winding 8b. How out Fig. 3 it can be seen, two auxiliary windings 9a and 9b are symmetrical to the air gap 10th educated. Characterized in that the partition wall 2 are used as a stop for winding the auxiliary windings 9a, 9b, one achieves an arrangement of the auxiliary windings 9a, 9b close to the air gap 10 and a symmetrical alignment of the auxiliary windings 9a and 9b to the air gap 10. Die FIG.
  • connection pins 12 connected to the winding wires.
  • the connection pins 12 are integrated with the winding body 1 to a base in such a way that the winding axis A are arranged parallel to the connection pins 12.
  • the base may also be formed so that the connection pins 12 are arranged perpendicular to the winding direction.
  • Fig. 4 shows a section through a technical realization of a swing throttle according to the invention, in which the winding body 1 is divided by two partitions 2a and 2b in three winding chambers 3a, 3b and 3c.
  • the main winding is divided into a first part main winding 8a, a second part main winding 8b and a third part main winding 8c.
  • the second part main winding 8b is arranged in the second (middle) winding chamber 3b and encloses the air gap 10.
  • the auxiliary winding 9a, 9b is centered in the wound up mean winding chamber 3b. How out Fig.
  • connection pins 12 connected to the winding wires.
  • the connection pins 12 are integrated with the winding body 1 to a base in such a way that the winding axis A are arranged parallel to the connection pins 12.
  • the base may also be formed so that the connection pins 12 are arranged perpendicular to the winding direction.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Coils Of Transformers For General Uses (AREA)

Claims (12)

  1. Bobine à inductance variable comprenant :
    un corps d'enroulement (1) ;
    un noyau (4a, 4b), qui est inséré dans le corps d'enroulement (1) de manière telle, que le noyau forme au moins un entrefer (10) dans le corps d'enroulement ;
    au moins un enroulement principal (8a, 8b, 8c), qui est enroulé sur le corps d'enroulement (1), l'enroulement principal (8a, 8b, 8c) étant conçu pour la haute tension ; et
    au moins un enroulement auxiliaire (9a, 9b) dont le nombre de spires est prévu de manière à pouvoir assurer un piquage d'une basse tension, et qui est agencé par-dessus ou au voisinage de l'entrefer (10),
    le corps d'enroulement (1) présentant deux parois de séparation (2a, 2b), qui subdivisent le corps d'enroulement (1) en trois chambres d'enroulement (3a, 3b, 3c),
    caractérisée
    en ce que la chambre d'enroulement médiane (3b) est agencée le long de l'entrefer (10), et
    en ce que l'enroulement auxiliaire (9a, 9b) est agencé dans la chambre d'enroulement médiane (3b), le long de l'entrefer (10).
  2. Bobine à inductance variable selon la revendication 1, dans laquelle l'enroulement auxiliaire (9a, 9b) est enroulé au moins partiellement, par-dessus l'enroulement principal (8a, 8b).
  3. Bobine à inductance variable selon l'une des revendications précédentes, dans laquelle le corps d'enroulement (1) est subdivisé en au moins deux chambres d'enroulement (3a, 3b),
    ledit au moins un enroulement principal (8a, 8b, 8c) étant subdivisé par lesdites au moins deux chambres d'enroulement (3a, 3b, 3c) en au moins un premier enroulement principal partiel (8a) et un deuxième enroulement principal partiel (8b), et
    ledit au moins un enroulement auxiliaire (9a, 9b) étant enroulé par-dessus l'enroulement principal (8a, 8b) dans au moins une chambre d'enroulement (3a, 3b, 3c).
  4. Bobine à inductance variable selon l'une des revendications précédentes, dans laquelle le noyau comprend au moins deux noyaux partiels, dans laquelle chaque noyau partiel du noyau (4a, 4b) en deux parties présente une section transversale en forme de E avec deux branches extérieures (5a, 5b, 6a, 6b) de même longueur, d'une première longueur (h1), et une branche centrale (7a, 7b) un peu plus courte, d'une deuxième longueur (h2), et dans laquelle le noyau (4a, 4b) en deux parties est inséré dans le corps d'enroulement (1) de manière à ce que le noyau double en E, assemblé, forme l'entrefer (10) entre les branches centrales (7a, 7b) des noyaux partiels (4a, 4b) lorsque les surfaces frontales (11) de branches extérieures (5a, 5b, 6a, 6b) opposées prennent une position d'espacement d'ajustement (a).
  5. Bobine à inductance variable selon l'une des revendications précédentes, dans laquelle l'enroulement auxiliaire (9a, 9b) ne présente qu'une à cinq spires.
  6. Bobine à inductance variable selon l'une des revendications précédentes, dans laquelle sont formés deux enroulements auxiliaires (9a, 9b), qui sont agencés d'une manière la plus symétrique possible par rapport à l'entrefer (10).
  7. Bobine à inductance variable selon l'une des revendications précédentes, dans laquelle l'épaisseur de l'entrefer (10) à une valeur de 1,4 mm.
  8. Bobine à inductance variable selon l'une des revendications précédentes, dans laquelle la paroi de séparation (2) présente une épaisseur de 1,5 mm.
  9. Bobine à inductance variable selon l'une des revendications précédentes, qui est configurée de manière à ce que l'enroulement principal (8a, 8b, 8c) puisse être utilisé pour commander un moyen d'éclairage, et la tension de piquage de l'enroulement auxiliaire (9a, 9b) peut être utilisée pour chauffer des éléments de lampes.
  10. Bobine à inductance variable selon la revendication 9, dans laquelle le moyen d'éclairage est un tube fluorescent ou une lampe à décharge gazeuse.
  11. Bobine à inductance variable selon la revendication 9 ou la revendication 10, dans laquelle la tension, dont le piquage est effectué sur l'enroulement auxiliaire (9a, 9b), peut être utilisée pour le chauffage d'au moins une électrode du moyen d'éclairage.
  12. Commande destinée à un moyen d'éclairage comprenant une bobine à inductance variable selon l'une des revendications 1 à 11.
EP06791529.8A 2005-06-29 2006-06-29 Bobine a inductance variable pour applications d'eclairage Not-in-force EP1902451B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202005010234U DE202005010234U1 (de) 2005-06-29 2005-06-29 Schwingdrossel für Lichtanwendungen
PCT/EP2006/006323 WO2007000352A1 (fr) 2005-06-29 2006-06-29 Bobine a inductance variable pour applications d'eclairage

Publications (2)

Publication Number Publication Date
EP1902451A1 EP1902451A1 (fr) 2008-03-26
EP1902451B1 true EP1902451B1 (fr) 2014-12-10

Family

ID=37116163

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06791529.8A Not-in-force EP1902451B1 (fr) 2005-06-29 2006-06-29 Bobine a inductance variable pour applications d'eclairage

Country Status (5)

Country Link
US (1) US20090212895A1 (fr)
EP (1) EP1902451B1 (fr)
CN (1) CN101283418B (fr)
DE (1) DE202005010234U1 (fr)
WO (1) WO2007000352A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008017314B4 (de) * 2008-04-04 2015-10-29 SUMIDA Components & Modules GmbH Induktives Bauelement und elektronische Schaltung zur Ansteuerung einer Leuchte
FR3131796B1 (fr) * 2022-01-12 2024-01-12 Irt Antoine De Saint Exupery Utilisation d’un fil de litz pour limiter des surtensions dans une chaîne électromécanique

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3200290A (en) * 1960-05-25 1965-08-10 Philips Corp Ballast device and circuit for gas discharge lamps
US3385999A (en) * 1965-09-14 1968-05-28 Westinghouse Electric Corp Discharge lamp transformer coil form having winding on insulated flange thereof
DE1564623A1 (de) * 1966-06-10 1969-07-24 Siemens Ag Mehrwicklige Spule oder UEbertrager
GB1436129A (en) * 1973-04-12 1976-05-19 Thorn Electrical Ind Ltd Inductance structures for electrical lamp circuits
US4419814A (en) * 1981-10-15 1983-12-13 General Signal Corporation Method of making a bobbin construction for autotransformer ballast
DE3316764A1 (de) * 1983-05-07 1984-11-08 Vogt Gmbh & Co Kg, 8391 Erlau Flansch-spulenkoerper fuer abgleichbare transformatoren und spulen
JPH01180301A (ja) * 1988-01-13 1989-07-18 Hitachi Transport Syst Ltd 木材自動切断装置
US5751205A (en) * 1995-02-27 1998-05-12 Deutsche Thomson Brandt Gmbh High-voltage transformer for a television receiver
EP0901136B1 (fr) * 1997-09-04 2003-06-25 TDK Corporation Dispositif d'inductance à entrefer
JP2000012350A (ja) * 1998-06-22 2000-01-14 Koito Mfg Co Ltd 変圧器
EP1077018A1 (fr) * 1999-03-09 2001-02-21 Koninklijke Philips Electronics N.V. Composant magnétique, ainsi qu' un circuit contenant un tel composant magnétique
JP3726010B2 (ja) * 1999-06-03 2005-12-14 シャープ株式会社 高周波加熱装置用昇圧変圧器
EP1152640B1 (fr) * 2000-03-24 2008-10-01 Tabuchi Electric Co., Ltd. Dispositif à induction électromagnétique
DE50208151D1 (de) * 2001-07-11 2006-10-26 Vogt Electronic Ag Schwingdrossel
CN1534697A (zh) * 2003-03-31 2004-10-06 达方电子股份有限公司 变压器及应用变压器的多灯管电压供电电路

Also Published As

Publication number Publication date
CN101283418A (zh) 2008-10-08
US20090212895A1 (en) 2009-08-27
WO2007000352A1 (fr) 2007-01-04
EP1902451A1 (fr) 2008-03-26
DE202005010234U1 (de) 2006-11-09
CN101283418B (zh) 2013-06-19

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