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EP0354121A1 - Electromagnetic power coil - Google Patents

Electromagnetic power coil Download PDF

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Publication number
EP0354121A1
EP0354121A1 EP89402191A EP89402191A EP0354121A1 EP 0354121 A1 EP0354121 A1 EP 0354121A1 EP 89402191 A EP89402191 A EP 89402191A EP 89402191 A EP89402191 A EP 89402191A EP 0354121 A1 EP0354121 A1 EP 0354121A1
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EP
European Patent Office
Prior art keywords
turns
winding
turn
axis
conductive
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.)
Granted
Application number
EP89402191A
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German (de)
French (fr)
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EP0354121B1 (en
Inventor
Michel Petit
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Thales SA
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Thomson CSF SA
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Publication of EP0354121B1 publication Critical patent/EP0354121B1/en
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    • 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
    • H01F27/2804—Printed windings
    • 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
    • H01F27/06—Mounting, supporting or suspending transformers, reactors or choke coils not being of the signal type
    • 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
    • H01F27/06—Mounting, supporting or suspending transformers, reactors or choke coils not being of the signal type
    • H01F2027/065—Mounting on printed circuit boards

Definitions

  • the present invention relates to electromagnetic power windings and transformers comprising such windings generally used in electronic power circuits and in particular in electrical supplies of electronic circuits.
  • the winding comprises a support on which rests a set of conductive, independent, contiguous turns, covered with an insulating sheath and inside which a magnetic circuit can be introduced and on which are printed conductive tracks to achieve electrical continuity between each turn.
  • These conductive turns are bent on themselves towards the inside or the outside, depending on whether it is a self-inductance or a transformer, so as to form a box in which the circuit can be introduced.
  • magnetic for example a ferrite.
  • each of these conductive turns are located opposite one another and are produced so as to be able to rest on the support comprising an insulating and thermal conductive substrate; these ends also provide electrical continuity and thermal conduction with the insulating substrate to dissipate the heat transmitted by the turns during the passage of a current inside the winding.
  • the current densities used in the various applications, in particular in switching power supplies, are relatively high and problems of insulation voltage and coupling appear with the use of such windings.
  • the object of the invention is to remedy these drawbacks by modifying the shape of the turns and by proposing a particular interlacing of these turns.
  • the present invention relates to an electromagnetic power winding comprising conductive turns positioned on the same axis, each turn being independent, composed of a first set of turns (P1 to P n ) forming a primary winding and a second set (S1 to S n ) forming a secondary winding thus constituting a transformer, these turns resting on a support comprising an insulating and thermal conductive substrate and on which are printed conductive tracks making it possible to achieve electrical continuity between each turn, which, by these ends provide electrical continuity and thermal conduction with the substrate to dissipate the heat transmitted by the turns, the winding being characterized in that the ends of the first set of turns (P1 to P n ) are aligned on an axis and in that the ends of the second set of turns (S1 to S n ) are aligned on another axis, g owing to an arrangement of the turns allowing very good coupling to be obtained.
  • FIG. 1 there is shown a first application of the winding according to the invention. It concerns a first application of this winding as a transformer.
  • the winding comprises two sets of turns P1 to P n and S1 to S n positioned on the same axis, a magnetic circuit and a support.
  • the coil is constituted, on the one hand, by a first set of conductive turns P1 to P n connected in series by the support and on the other hand, by a second set of conductive turns S1 to S p connected in parallel by the support .
  • the winding behaves like a step-down or step-up transformer, the primary being for example constituted by the turns P1 to P n and the secondary by the turns S1 to S n .
  • These turns P1 to P n and S1 to S n are not obtained in a conventional manner by winding a single conductive wire around a core. They are produced by a set of conductors P1 to P n and S1 to S n all identical.
  • a turn 1 is shown in Figure 2. Each of these turns is curved on itself, so as to form, for example, a rectangle inside which can be introduced a magnetic circuit.
  • each of turns 3 and 4 are placed side by side and are made so that they can rest on the support to establish thermal and electrical contact.
  • the ends of each turn 3 and 4 are connected to the support 2 of Figure 1 so as to allow an electrical connection, for example it is a weld.
  • the shape and arrangement of the turns P1 to P n and S1 to S n have been designed so as to obtain a maximum insulation voltage by moving the ends of the primary and secondary turns away.
  • the assembly of the turns P1 to P n and S1 to S n allowing the constitution of the coil of the electromagnetic power winding, is carried out in the following manner: a turn is previously taken up with a deposit of electrical insulator, as shown in Figure 2, we juxtapose a second turn which we will have rotated 180 ° so that the ends of the second turn are opposite the ends of the first turn, we then take a third turn positioned behind the second but whose ends are found opposite the ends of the first turn. These turns are alternated until the winding is formed.
  • the support 2 comprises a substrate or printed circuit 6 and a cooling system, for example a radiator 7.
  • the substrate or printed circuit 6 is placed on the radiator and is integral therewith, it is an electrical insulating substrate, good thermal conductor.
  • a set of conductive tracks F1 to F n and G1 to G2 is printed or screen printed on the substrate 6 so that, when the coil is fixed on this substrate 6 and supplied, the current can flow through it. Indeed, at a given instant, the current arrives on the track F1, follows the first turn P1, then successively traverses the second track F2 and the turn P2 until the turn P n and the track F n .
  • the winding comprising a magnetic circuit, a current also passes through each of the turns S1 to S n ; these turns being mounted in parallel thanks to the conductors G1 and G2, one recovers on the conductors a current depending on the chosen transformation ratio.
  • the heat released by each turn S1 to S n and P1 to P n and by the magnetic circuit is transmitted to the substrate 6 longitudinally along these turns.
  • the substrate 6 is designed to allow the electrical connection between the turns and to advantageously capture the heat given off by the winding and transmit it to the radiator 7.
  • the electrical conductor that constitutes the turn also serves as a thermal conductor.
  • the substrate 6 is in this particular embodiment an alumina plate a few hundred microns thick.
  • the radiator 7 is known per se, it makes it possible to dissipate the heat released and thus to allow permanent cooling of the winding.
  • the magnetic circuit 8, 9 consists in our particular embodiment, of two boxes able to be introduced inside the winding and to wrap the turns when they are joined in order to capture the maximum flux.
  • FIG. 3 represents a sectional view of the circuit according to the invention. It makes it possible to show the movement of the heat flow over a turn via the arrows, represented in this figure, which indicate the movement of the flow during the passage of a current.
  • the present invention applies to any support for any surface mounting.

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

Abstract

The invention relates to electromagnetic power coils comprising conducting tracks (P1 to Pn, S1 to Sn) the shape and layout of which enable very good coupling and maximum insulating voltage to be obtained. Each independent turn (1) is covered with an electrically insulating deposit and is then assembled alternately with other turns of the same shape and same structure, in such a way as to produce two windings (P1 to Pn) and (S1 to Sn) each disposed over an axis. Application to power transformers. <IMAGE>

Description

La présente invention concerne les bobinages électromagnétiques de puissance et les transformateurs comportant de tels bobinages généralement utilisés dans des circuits électroniques de puissance et en particulier dans des alimentations électriques de circuits électroniques.The present invention relates to electromagnetic power windings and transformers comprising such windings generally used in electronic power circuits and in particular in electrical supplies of electronic circuits.

Selon qu'il s'agit d'une self-inductance ou d'un transformateur de tension, le bobinage comporte un support sur lequel repose un ensemble de spires conductrices, indépendantes, jointives, recouvertes d'une gaine isolante et à l'intérieur desquelles un circuit magnétique peut être introduit et sur lequel sont imprimés des pistes conductrices permettant de réaliser une continuité électrique entre chaque spire. Ces spires conductrices sont recourbées sur elles-mêmes vers l'intérieur ou l'extérieur, suivant qu'il s'agit d'une self-inductance ou d'un transformateur, de manière à former une loge dans laquelle peut être introduit le circuit magnétique, par exemple un ferrite. Les extrémités de chacune de ces spires conductrices sont situées à l'opposé l'une de l'autre et sont réalisées afin de pouvoir reposer sur le support comprenant un substrat isolant et conducteur thermique ; ces extrémités assurent également une continuité électrique et une conduction thermique avec le substrat isolant pour dissiper la chaleur transmise par les spires lors du passage d'un courant à l'intérieur du bobinage. Les densités de courant utilisées dans les différentes applications, notamment dans les alimentations à découpage, sont relativement élevées et des problèmes de tension d'isolement et de couplage apparaissent avec l'utilisation de tels bobinages.Depending on whether it is a self-inductance or a voltage transformer, the winding comprises a support on which rests a set of conductive, independent, contiguous turns, covered with an insulating sheath and inside which a magnetic circuit can be introduced and on which are printed conductive tracks to achieve electrical continuity between each turn. These conductive turns are bent on themselves towards the inside or the outside, depending on whether it is a self-inductance or a transformer, so as to form a box in which the circuit can be introduced. magnetic, for example a ferrite. The ends of each of these conductive turns are located opposite one another and are produced so as to be able to rest on the support comprising an insulating and thermal conductive substrate; these ends also provide electrical continuity and thermal conduction with the insulating substrate to dissipate the heat transmitted by the turns during the passage of a current inside the winding. The current densities used in the various applications, in particular in switching power supplies, are relatively high and problems of insulation voltage and coupling appear with the use of such windings.

Le but de l'invention est de remédier à ces inconvénients en modifiant la forme des spires et en proposant un entrelacement particulier de ces spires.The object of the invention is to remedy these drawbacks by modifying the shape of the turns and by proposing a particular interlacing of these turns.

Par ailleurs, suivant une sérigraphie des pistes conductrices du substrat isolant, on peut faire varier les dimensions du bobinage en fixant un rapport de transformation pour un transformateur ou des caractéristiques pour une self-inductance.Furthermore, following a screen printing of the conductive tracks of the insulating substrate, it is possible to vary the dimensions of the winding by fixing a transformation ratio for a transformer or characteristics for a self-inductance.

La présente invention a pour objet un bobinage électromagnétique de puissance comportant des spires conductrices positionnées sur un même axe, chaque spire étant indépendante, composé d'un premier ensemble de spires (P₁ à Pn) formant un enroulement primaire et d'un deuxième ensemble (S₁ à Sn) formant un enroulement secondaire constituant ainsi un transformateur, ces spires reposant sur un support comprenant un substrat isolant et conducteur thermique et sur lequel sont imprimées des pistes conductrices permettant de réaliser une continuité électrique entre chaque spire, qui, par ces extrémités assurent une continuité électrique et une conduction thermique avec le substrat pour évacuer la chaleur transmise par les spires, le bobinage étant caractérisé en ce que les extrémités du premier ensemble de spires (P₁ à Pn) sont alignées sur un axe et en ce que les extrémités du deuxième ensemble de spires (S₁ à Sn) sont alignés sur un autre axe, grâce à un agencement des spires permettant d'obtenir un très bon couplage.The present invention relates to an electromagnetic power winding comprising conductive turns positioned on the same axis, each turn being independent, composed of a first set of turns (P₁ to P n ) forming a primary winding and a second set (S₁ to S n ) forming a secondary winding thus constituting a transformer, these turns resting on a support comprising an insulating and thermal conductive substrate and on which are printed conductive tracks making it possible to achieve electrical continuity between each turn, which, by these ends provide electrical continuity and thermal conduction with the substrate to dissipate the heat transmitted by the turns, the winding being characterized in that the ends of the first set of turns (P₁ to P n ) are aligned on an axis and in that the ends of the second set of turns (S₁ to S n ) are aligned on another axis, g owing to an arrangement of the turns allowing very good coupling to be obtained.

L'invention sera mieux comprise à l'aide de la description ci-après, donnée à titre d'exemple non limitatif et illustrée par les dessins annexés sur lesquels :

  • - la figure 1 représente une vue éclatée du bobinage selon l'invention dans une première application ;
  • - la figure 2 représente une vue d'une spire servant à réaliser le bobinage selon l'invention ;
  • - la figure 3 représente une coupe du bobinage selon l'invention.
The invention will be better understood with the aid of the description below, given by way of nonlimiting example and illustrated by the appended drawings in which:
  • - Figure 1 shows an exploded view of the winding according to the invention in a first application;
  • - Figure 2 shows a view of a turn used to perform the winding according to the invention;
  • - Figure 3 shows a section of the winding according to the invention.

Sur la figure 1, on a représenté une première application du bobinage selon l'invention. Elle concerne une première application de ce bobinage en tant que transformateur. Le bobinage comporte deux ensembles de spires P₁ à Pn et S₁ à Sn positionnées sur un même axe, un circuit magnétique et un support. La bobine est constituée, d'une part, par un premier ensemble de spires conductrices P₁ à Pn connectées en série par le support et d'autre part, par un deuxième ensemble de spires conductrices S₁ à Sp connectées en parallèle par le support. Selon le nombre de spires des deux ensembles, le bobinage se comporte comme un transformateur abaisseur ou élévateur de tension, le primaire étant par exemple constitué par les spires P₁ à Pn et le secondaire par les spires S₁ à Sn. Ces spires P₁ à Pn et S₁ à Sn ne sont pas obtenues de manière conventionnnelle par enroulement d'un seul fil conducteur autour d'un noyau. Elles sont réalisées par un ensemble de conducteurs P₁ à Pn et S₁ à Sn tous identiques. Une spire 1 est représentée à la figure 2. Chacune de ces spires est recourbée sur elle-même, de manière à former, par exemple, un rectangle à l'intérieur duquel peut être introduit un circuit magnétique. Les extrémités de chacune des spires 3 et 4 sont placées côte à côte et sont réalisées de façon à pouvoir reposer sur le support pour établir un contact thermique et électrique. Les extrémités de chaque spire 3 et 4 sont reliées au support 2 de la figure 1 de manière à permettre une liaison électrique, il s'agit par exemple d'une soudure. La forme et l'agencement des spires P₁ à Pn et S₁ à Sn ont été conçus de manière à obtenir une tension maximum d'isolement en éloignant les extrémités des spires primaires et secondaires. Pour cela, l'assemblage des spires P₁ à Pn et S₁ à Sn permettant la constitution de la bobine du bobinage électromagnétique de puissance, est réalisé de la manière suivante : on prend une spire préalablement recouverte par un dépôt d'isolant électrique, telle que représentée à la figure 2, on juxtapose une deuxième spire que l'on aura fait pivoter de 180° de manière à ce que les extrémités de la deuxième spire se trouvent à l'opposé des extrémités de la première spire, on prend ensuite une troisième spire se positionnant derrière la deuxième mais dont les extrémités se retrouvent en vis-à-vis des extrémités de la première spire. On alterne ces spires jusqu'à ce que le bobinage soit constitué. On obtient un alignement, sur un axe, des extrémités 3 et 4 du premier ensemble de spires P₁ à Pn ainsi qu'un alignement sur un autre axe des extrémités 3 et 4 du deuxième ensemble de spires S₁ à Sn. Un tel entrelacement des spires P₁ à Pn et S₁ à Sn c'est-à-dire du primaire et du secondaire sépare les extrémités des spires du primaire et du secondaire et assure un bon couplage.In Figure 1, there is shown a first application of the winding according to the invention. It concerns a first application of this winding as a transformer. The winding comprises two sets of turns P₁ to P n and S₁ to S n positioned on the same axis, a magnetic circuit and a support. The coil is constituted, on the one hand, by a first set of conductive turns P₁ to P n connected in series by the support and on the other hand, by a second set of conductive turns S₁ to S p connected in parallel by the support . Depending on the number of turns of the two sets, the winding behaves like a step-down or step-up transformer, the primary being for example constituted by the turns P₁ to P n and the secondary by the turns S₁ to S n . These turns P₁ to P n and S₁ to S n are not obtained in a conventional manner by winding a single conductive wire around a core. They are produced by a set of conductors P₁ to P n and S₁ to S n all identical. A turn 1 is shown in Figure 2. Each of these turns is curved on itself, so as to form, for example, a rectangle inside which can be introduced a magnetic circuit. The ends of each of turns 3 and 4 are placed side by side and are made so that they can rest on the support to establish thermal and electrical contact. The ends of each turn 3 and 4 are connected to the support 2 of Figure 1 so as to allow an electrical connection, for example it is a weld. The shape and arrangement of the turns P₁ to P n and S₁ to S n have been designed so as to obtain a maximum insulation voltage by moving the ends of the primary and secondary turns away. For this, the assembly of the turns P₁ to P n and S₁ to S n allowing the constitution of the coil of the electromagnetic power winding, is carried out in the following manner: a turn is previously taken up with a deposit of electrical insulator, as shown in Figure 2, we juxtapose a second turn which we will have rotated 180 ° so that the ends of the second turn are opposite the ends of the first turn, we then take a third turn positioned behind the second but whose ends are found opposite the ends of the first turn. These turns are alternated until the winding is formed. One obtains an alignment, on an axis, of the ends 3 and 4 of the first set of turns P₁ to P n as well as an alignment on another axis of the ends 3 and 4 of the second set of turns S₁ to S n . Such an interlacing of the turns P₁ to P n and S₁ to S n, that is to say of the primary and of the secondary, separates the ends of the turns of the primary and of the secondary and ensures good coupling.

Le support 2 comprend un substrat ou circuit imprimé 6 et un système de refroidissement, par exemple un radiateur 7. Le substrat ou circuit imprimé 6 est placé sur le radiateur et en est solidaire, c'est un substrat isolant électrique, bon conducteur thermique. Un ensemble de pistes conductrices F₁ à Fn et G₁ à G₂ est imprimé ou sérigraphié sur le substrat 6 afin que, lorsque la bobine est fixée sur ce substrat 6 et alimentée, le courant puisse la parcourir. En effet, à un instant donné, le courant arrive sur la piste F₁, suit la première spire P₁, puis parcourt successivement la deuxième piste F₂ et la spire P₂ jusqu'à la spire Pn et la piste Fn. Le bobinage comportant un circuit magnétique, un courant traverse également chacune des spires S₁ à Sn; ces spires étant montées en parallèle grâce aux conducteurs G₁ et G₂, on récupère sur les conducteurs un courant dépendant du rapport de transformation choisi. La chaleur dégagée par chaque spire S₁ à Sn et P₁ à Pn et par le circuit magnétique est transmise au substrat 6 longitudinalement le long de ces spires. Le substrat 6 est conçu pour permettre la liaison électrique entre les spires et pour capter avantageusement la chaleur dégagée par le bobinage et la transmettre au radiateur 7. Le conducteur électrique que constitue la spire sert également de conducteur thermique. Le substrat 6 est dans cette réalisation particulière une plaque d'alumine de quelques centaines de microns d'épaisseur. Le radiateur 7 est connu en soi, il permet de dissiper la chaleur dégagée et ainsi de permettre un refroidissement permanent du bobinage.The support 2 comprises a substrate or printed circuit 6 and a cooling system, for example a radiator 7. The substrate or printed circuit 6 is placed on the radiator and is integral therewith, it is an electrical insulating substrate, good thermal conductor. A set of conductive tracks F₁ to F n and G₁ to G₂ is printed or screen printed on the substrate 6 so that, when the coil is fixed on this substrate 6 and supplied, the current can flow through it. Indeed, at a given instant, the current arrives on the track F₁, follows the first turn P₁, then successively traverses the second track F₂ and the turn P₂ until the turn P n and the track F n . The winding comprising a magnetic circuit, a current also passes through each of the turns S₁ to S n ; these turns being mounted in parallel thanks to the conductors G₁ and G₂, one recovers on the conductors a current depending on the chosen transformation ratio. The heat released by each turn S₁ to S n and P₁ to P n and by the magnetic circuit is transmitted to the substrate 6 longitudinally along these turns. The substrate 6 is designed to allow the electrical connection between the turns and to advantageously capture the heat given off by the winding and transmit it to the radiator 7. The electrical conductor that constitutes the turn also serves as a thermal conductor. The substrate 6 is in this particular embodiment an alumina plate a few hundred microns thick. The radiator 7 is known per se, it makes it possible to dissipate the heat released and thus to allow permanent cooling of the winding.

Le circuit magnétique 8, 9 est constitué dans notre réalisation particulière, de deux boîtiers aptes à être introduits à l'intérieur du bobinage et à envelopper les spires lorsqu'ils sont joints afin de capter le maximum de flux.The magnetic circuit 8, 9 consists in our particular embodiment, of two boxes able to be introduced inside the winding and to wrap the turns when they are joined in order to capture the maximum flux.

La figure 3 représente une vue en coupe du circuit selon l'invention. Elle permet de montrer le mouvement du flux de chaleur sur une spire par l'intermédiaire des flèches, représentées sur cette figure, qui indiquent le déplacement du flux lors du passage d'un courant.FIG. 3 represents a sectional view of the circuit according to the invention. It makes it possible to show the movement of the heat flow over a turn via the arrows, represented in this figure, which indicate the movement of the flow during the passage of a current.

La présente invention s'applique sur un support quelconque pour tout montage en surface. On peut également envisager l'utilisation d'un tel bobinage comme self-inductance, pour cela, il suffit d'adapter les conducteurs du circuit imprimé et de pratiquer un entrefer dans le circuit magnétique.The present invention applies to any support for any surface mounting. One can also consider the use of such a winding as self-inductance, for this, it suffices to adapt the conductors of the printed circuit and to make an air gap in the magnetic circuit.

Claims (5)

1. Bobinage électromagnétique de puissance comportant des spires conductrices positionnées sur un même axe, chaque spire étant indépendante, composé d'un premier ensemble de spires (P₁ à Pn) formant un enroulement primaire et d'un deuxième ensemble (S₁ à Sn) formant un enroulement secondaire constituant ainsi un transformateur, ces spires reposant sur un support (2) comprenant un substrat isolant (6) et conducteur thermique et sur lequel sont imprimées des pistes conductrices permettant de réaliser une continuité électrique entre chaque spire (1), qui, par ces extrémités (3 et 4) assurent une continuité électrique et une conduction thermique avec le substrat (6) pour évacuer la chaleur transmise par les spires, le bobinage étant caractérisé en ce que les extrémités (3, 4) du premier ensemble de spires (P₁ à Pn) sont alignées sur un axe et en ce que les extrémités (3, 4) du deuxième ensemble de spires (S₁ à Sn) sont alignés sur un autre axe, grâce à un agencement des spires permettant d'obtenir un très bon couplage.1. Power electromagnetic winding comprising conductive turns positioned on the same axis, each turn being independent, composed of a first set of turns (P₁ to P n ) forming a primary winding and a second set (S₁ to S n ) forming a secondary winding thus constituting a transformer, these turns resting on a support (2) comprising an insulating substrate (6) and thermal conductor and on which are printed conductive tracks making it possible to achieve electrical continuity between each turn (1), which, by these ends (3 and 4) provide electrical continuity and thermal conduction with the substrate (6) to evacuate the heat transmitted by the turns, the winding being characterized in that the ends (3, 4) of the first set of turns (P₁ to P n ) are aligned on one axis and in that the ends (3, 4) of the second set of turns (S₁ to S n ) are aligned on another axis , thanks to an arrangement of the turns making it possible to obtain a very good coupling. 2. Bobinage électromagnétique de puissance selon la revendications 1, caractérisé en ce que les extrémités (3 et 4) de chaque spire sont alternées donnant ainsi deux ensembles de spires (P₁ à Pn) et (S₁ à Sn) disposés chacun sur un axe et permettant d'obtenir une tension maximum d'isolement entre le premier ensemble de spires (P₁ à Pn) et le deuxième ensemble de spires (S₁ à Sn).2. Power electromagnetic winding according to claim 1, characterized in that the ends (3 and 4) of each turn are alternated thus giving two sets of turns (P₁ to P n ) and (S₁ to S n ) each arranged on a axis and making it possible to obtain a maximum insulation voltage between the first set of turns (P₁ to P n ) and the second set of turns (S₁ to S n ). 3. Bobinage électromagnétique de puissance selon les revendications précédentes, caractérisé en ce que la forme de l'ensemble des spires conductrices (P₁ à Pn, S₁ à Sn) est un rectangle.3. Electromagnetic power winding according to the preceding claims, characterized in that the shape of the set of conductive turns (P₁ to P n , S₁ to S n ) is a rectangle. 4. Bobinage électromagnétique de puissance selon les revendications précédentes, caractérisé en ce que des conducteurs constituant chaque spire indépendante sont assemblés mais séparés électriquement par un dépôt d'isolant électrique.4. Electromagnetic power winding according to the preceding claims, characterized in that the conductors constituting each independent turn are assembled but electrically separated by an insulating deposit electric. 5. Bobinage électromagnétique de puissance selon l'une des revendications précédentes, caractérisé en ce que les pistes conductrices du substrat isolant électrique (6) sont imprimés de manière à fixer un rapport de transformation pour un transformateur ou des caractéristiques pour une self-inductance.5. Electromagnetic power winding according to one of the preceding claims, characterized in that the conductive tracks of the electrical insulating substrate (6) are printed so as to fix a transformation ratio for a transformer or characteristics for a self-inductance.
EP19890402191 1988-08-05 1989-08-02 Electromagnetic power coil Expired - Lifetime EP0354121B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8810614 1988-08-05
FR8810614A FR2635225A1 (en) 1988-08-05 1988-08-05 ELECTROMAGNETIC WINDING OF POWER

Publications (2)

Publication Number Publication Date
EP0354121A1 true EP0354121A1 (en) 1990-02-07
EP0354121B1 EP0354121B1 (en) 1993-11-10

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EP19890402191 Expired - Lifetime EP0354121B1 (en) 1988-08-05 1989-08-02 Electromagnetic power coil

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EP (1) EP0354121B1 (en)
DE (1) DE68910606T2 (en)
FR (1) FR2635225A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0735551A1 (en) * 1995-03-29 1996-10-02 Valeo Electronique Transformer assembly, in particular for a supply device of a vehicle discharge lamp
WO1998008237A1 (en) * 1996-08-20 1998-02-26 Thomson-Csf Vhv transfo-rectifier for surface mounting

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1184248A (en) * 1956-10-12 1959-07-17 American Mach & Foundry Multiple coil inductor
FR2476898A1 (en) * 1980-02-22 1981-08-28 Mini Informatiq System Ste Eur HF power supply transformer winding - has stacked printed circuit turns for low skin loss and good flux linkage with electrostatic screening
FR2556493A1 (en) * 1983-12-09 1985-06-14 Inf Milit Spatiale Aeronaut Electromagnetic winding and transformer containing such a winding

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1184248A (en) * 1956-10-12 1959-07-17 American Mach & Foundry Multiple coil inductor
FR2476898A1 (en) * 1980-02-22 1981-08-28 Mini Informatiq System Ste Eur HF power supply transformer winding - has stacked printed circuit turns for low skin loss and good flux linkage with electrostatic screening
FR2556493A1 (en) * 1983-12-09 1985-06-14 Inf Milit Spatiale Aeronaut Electromagnetic winding and transformer containing such a winding

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0735551A1 (en) * 1995-03-29 1996-10-02 Valeo Electronique Transformer assembly, in particular for a supply device of a vehicle discharge lamp
WO1998008237A1 (en) * 1996-08-20 1998-02-26 Thomson-Csf Vhv transfo-rectifier for surface mounting
FR2752642A1 (en) * 1996-08-20 1998-02-27 Thomson Csf TRANSFORMER-RECTIFIER T.H.T. FOR SURFACE MOUNTING
US5991178A (en) * 1996-08-20 1999-11-23 Thomson-Csf VHV transformer/rectifier for surface mounting

Also Published As

Publication number Publication date
EP0354121B1 (en) 1993-11-10
FR2635225B1 (en) 1995-04-07
DE68910606D1 (en) 1993-12-16
DE68910606T2 (en) 1994-03-17
FR2635225A1 (en) 1990-02-09

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