EP3437111B1 - Elektrischer wicklungstransformator - Google Patents

Elektrischer wicklungstransformator Download PDF

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Publication number
EP3437111B1
EP3437111B1 EP17712527.5A EP17712527A EP3437111B1 EP 3437111 B1 EP3437111 B1 EP 3437111B1 EP 17712527 A EP17712527 A EP 17712527A EP 3437111 B1 EP3437111 B1 EP 3437111B1
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EP
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Prior art keywords
primary
winding
windings
axis
transformer
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EP17712527.5A
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English (en)
French (fr)
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EP3437111A1 (de
Inventor
Sébastien FONTAINE
Daniel Sadarnac
Charif KARIMI
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Safran Electronics and Defense SAS
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Safran Electronics and Defense SAS
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    • 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
    • H01F38/18—Rotary transformers
    • 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
    • H01F27/2871—Pancake coils
    • 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
    • H01F27/346—Preventing or reducing leakage fields
    • 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

Definitions

  • the invention relates to a winding electric transformer.
  • a known transformer comprises at least two windings: a primary winding, generally connected to a power supply, and a secondary winding generally connected to a "load" that it supplies with energy drawn from the source.
  • the Figures 1a and 1b illustrate two conventional electrical transformers, in which the primary winding P comprises n 1 turns extending around an axis X, and the secondary winding S comprises n 2 turns extending around the X axis and around the n 1 turns.
  • a magnetic circuit M consisting of a material with high magnetic permeability such as ferrite, is used to channel this magnetic flux and thus improve the coupling between the windings.
  • the magnetic circuit M of the transformer of the figure 1a has a disk-shaped section in a plane transverse to the X axis, while that of the transformer of the figure 1b has an annular section in such a plane.
  • the windings P and S are traversed by currents i 1 and i 2 as shown in FIG. figure 1 .
  • the "ampere x turns" of the primary winding and the secondary winding are then almost identical, as illustrated by the following formula: not 1 i 1 ⁇ not 2 i 2
  • the magnetic circuit weighs down the electrical transformer.
  • FIG. 2a An example of a known rotating transformer is illustrated on the figure 2a .
  • the figure 2b illustrates an unconventional transformer that could theoretically be considered in a process of lightening and simplifying the geometry of parts.
  • These transformers comprise an "air gap" e, namely a space formed in the magnetic circuit so that one winding can rotate relative to the other. Connecting wires turn in this space e if the two parts of the magnetic circuit are fixed (only one winding rotates).
  • This space corresponds to the necessary mechanical clearance if the two parts of the magnetic circuit are each fixed to a winding (a winding then rotates with a part of the magnetic circuit).
  • the air gap e the magnetic flux between the two windings P and S is less well channeled. This results in a not insignificant difference between the "amps x turns" of the primary winding and the secondary winding: not 1 i 1 ⁇ not 2 i 2
  • the figure 3 illustrates this compensation effect.
  • the left part of the figure 3 shows a single conductor in space, rectilinear and of infinite length: the induction lines are circular with an induction which decreases inversely proportional to the radial distance to this conductor.
  • the central part of the figure 3 shows the association of two such conductors, arranged parallel and traversed by currents of opposite directions. Their effects are superimposed on the right side of the figure 3 : induction is reinforced between drivers as it decreases very rapidly towards the outside, as one moves away from the drivers. Magnetic circuit portions placed around the conductors are sufficient in this 1 st configuration to channel these low external leakage fluxes.
  • the Figures 4a and 4b show the magnetic fluxes generated by the transformers of Figures 2a and 2b in the 2 nd configuration (the only current imposed on the transformer is the magnetizing current in the primary winding). In this 2 nd configuration, there is no more compensation effect. Magnetic leakage propagates to the outside of these transformers, the leakage being all the more important as the air gaps e are wide.
  • the figure 5 details the profile of the induction obtained along the line D of the transformer of the figure 4b for a given magnetizing current imposed on the primary winding.
  • This figure shows the presence of magnetic leaks outside the transformer.
  • the induction profile is computable simply by approximating the internal induction lines to parallel lines: the 2 lines drawn in a thicker line on this figure surround part of the "amps x turns"; the induction on these two lines is proportional to these encircled "ampere x towers".
  • the fact that the induction is not zero along the line D in regions adjacent to the transformer is the manifestation of the aforementioned magnetic leakage.
  • the magnetic circuit weighs down the electrical transformer.
  • An object of the invention is to reduce the magnetic disturbances generated by a transformer operating on the basis of windings, while allowing to significantly reduce this transformer.
  • a transformer T comprises two parts: a primary part A and a secondary part B.
  • the primary part A comprises three primary windings 11a, 12a, 13a and the secondary part B comprises three secondary windings 11b, 12b, 13b.
  • each winding mentioned in this document comprises one or more turns.
  • a turn is defined as a winding portion extending 360 degrees about an axis in a given direction.
  • the following defines a "winding" as a turn or a set of consecutive turns wound in the same direction.
  • a change of direction marks a separation between two adjacent windings.
  • the six windings 11a, 12a, 13a, 11b, 12b, 13b extend around a reference axis X.
  • the primary winding 11a said central primary winding, is arranged between the primary windings 12a and 13a, said peripheral primary windings.
  • the primary windings 11a, 12a, 13a are intended to be connected to one or more electrical power sources (not shown in the figures). These primary windings 11a, 12a, 13a are therefore supplied with current by such electric sources.
  • the central primary winding 11a is configured to be traversed by a current rotating in a first direction around the axis X.
  • the two peripheral primary windings 12a, 13a are configured to be traversed by a current rotating in a second direction around the X axis which is opposed to the first sense. In other words, the flow directions of the current in the different primary windings are alternated.
  • the three primary windings 11a, 12a, 13a can be connected in series, that is to say that they form different portions of the same primary electrical conductor. In this way, the primary windings can be traversed by a current of the same intensity, for example provided by a single electrical source.
  • An alternation of directions of the currents flowing through the three primary windings 11a, 12a, 13a can for example be obtained by alternating the direction in which these windings 11a, 12a, 13a are wound around the axis X.
  • the peripheral primary windings 12a, 13a are then wound around the axis X in a first direction of winding (for example hourly), and the central primary winding 11a is wound around the axis X in a second direction of winding opposite the first direction of winding (counterclockwise). This is such as to minimize the length of conductor needed to connect the central primary winding to each of the adjacent peripheral primary windings, when these are connected in series.
  • the central primary winding 11a and the peripheral primary winding 12a are directly connected to each other, via a junction 14a forming a hairpin: it is at this junction 14a that the direction winding around the reference axis X is reversed between the two primary windings 11a and 12a. It is the same for the junction 15a between the windings 11a and 13a.
  • the three windings can be contiguous two by two. In other words, the windings are in contact two by two (the junctions 14a and 15a can then form a simple fold).
  • the three primary windings are at a distance from each other; in this case, the junction 14a passes through a space between the two windings 11a and 12a, and the junction 15a passes through a space between the two windings 11a and 13a.
  • This space is useful (but not essential) to maximize the magnetic flux closing through the primary and secondary windings, thus to maximize the resulting magnetization inductance. Maximization of the magnetization inductance is useful (but not necessary) to minimize the no-load (no load) current of the transformer.
  • peripheral primary windings 12a, 13a of the figure 6 have the same number of turns and together have a cumulative number of turns equal to the number of turns of the central primary winding 11a.
  • the secondary winding 11b is arranged between the secondary windings 12b and 13b, said peripheral secondary windings.
  • the secondary windings 11b, 12b, 13b are intended to be connected to one or more electrical devices to supply energy, also referred to as "charges" (not shown in the figures).
  • the central primary winding 11a is configured to generate a central magnetic flux in cooperation with the central secondary winding 11b.
  • the peripheral primary winding 12a (respectively 13a) is configured to generate a central magnetic flux in cooperation with the secondary winding 12b (respectively 13b).
  • the central secondary winding 11b is configured to be traversed by a current rotating in the second direction about the axis X (thus in a direction opposite to the direction of the current rotating in the central primary winding 11a with which it cooperates).
  • the two peripheral secondary windings 12b, 13b are configured to be traversed by a current rotating in the first direction about the axis X which is opposite to the second direction. In other words, the flow directions of the current in the different secondary windings 11b-13b are also alternated.
  • the three secondary windings 11b, 12b, 13b can be connected in series, that is to say they form different portions of the same secondary electrical conductor.
  • An alternation of direction of the currents flowing through the three secondary windings 11b, 12b, 13b can for example be obtained by alternating the direction in which these windings are wound around the axis X.
  • the peripheral secondary windings 12b, 13b are then wound around the X axis in a certain direction of winding (for example counterclockwise), and the central secondary winding 11b is wound around the axis X in the other direction (for example hourly).
  • the central secondary winding 11b and the peripheral secondary winding 12b are directly connected to each other, via a junction 14b forming a hairpin: it is at this junction 14b that the direction winding around the reference axis X is reversed between the two secondary windings 11b and 12b.
  • the central secondary winding 11b and the secondary winding 13b are directly connected to one another, via another junction 15b forming a half-turn: it is at this junction 15b that the winding direction around the reference axis X is reversed between the two secondary windings 11b and 13b.
  • peripheral secondary windings 12b, 13b of the figure 6 have the same number of turns and together have a cumulative number of turns equal to the number of turns of the central secondary winding 11b.
  • n n of turns in the primary windings and m turns in the secondary windings, divided as follows: n / 4 turns for each device primary windings n / 2 turns for the central primary winding, m / 4 turns for each of the peripheral secondary windings and m / 2 turns for the central secondary winding.
  • n m or n different from m (in which case the transformer will have a transformation ratio different from 1).
  • the transformer is of rotary type, in that the primary windings 11a, 12a, 13a are rotatable about the X axis relative to the secondary windings 11b, 12b, 13b (or vice versa).
  • the primary part A of the transformer is for example a stator comprising a primary casing 2a extending around the reference axis X.
  • the primary casing 2a has a generally annular shape, for example cylindrical and / or of revolution.
  • the secondary portion B is furthermore a rotor rotating about the reference axis X with respect to the stator A.
  • the rotor B comprises a secondary casing 2b having a generally annular shape, for example cylindrical and / or of revolution.
  • the secondary casing 2b is inside the primary casing 2a, or vice versa.
  • the casing closest to the X axis is hollow; it is understood that this housing can alternatively be full.
  • the primary windings are fixed to the stator A, and the secondary windings are fixed to the rotor B.
  • each winding extends in volume around and along the axis X. More specifically, each winding comprises a succession of localized turns in different positions along the reference axis X (for better readability, we have shown on the figure 6 only one turn of each primary winding).
  • the primary conductor in which the primary windings are formed is wound along a substantially helical path around and along the X axis, and occupies a generally annular volume centered on the reference axis X.
  • the primary windings are wound at a first radial distance from the reference axis X.
  • the junction 14a between the peripheral primary winding 12a and the central primary winding 11a is a portion of the primary conductor which is confined between the two windings 11a, 12a in a direction parallel to the X axis. the same goes for the junction 15a which connects the primary windings 11a and 13a.
  • the foregoing features also apply to the secondary conductor, wherein the secondary windings 11b, 12b, 13b and the junctions 14b-15b are formed.
  • This secondary conductor is wound in a substantially helical path around and along the X axis, and occupies a generally annular volume centered on the reference axis X.
  • the secondary windings 11b, 12b, 13b are wound at a second radial distance of the reference axis X, different from the first radial distance.
  • the secondary windings 11b, 12b, 13b are wound around the primary windings 11a, 12a, 13a with respect to the X axis, or vice versa. More specifically, each secondary winding is wound around a primary winding, and facing it.
  • the "cylindrical" winding transformer T may be of rotary type.
  • the windings radially further from the X axis can then be fixed to the outer annular casing 2b, and the windings radially closer to the X axis be fixed to the inner annular casing 2a as illustrated in FIG. figure 6 both housings being rotatable relative to one another.
  • the left part of the figure 6 shows the induction lines that result from the magnetizing current flowing in the primary conductor in the cylindrical winding transformer T, and the right part of the figure 6 shows the induction profile measured along a line D parallel to the X axis and located between the annular structure formed by the primary windings and the annular structure formed by the secondary windings.
  • the central secondary winding 11b receives at least partly the central magnetic flux generated by the central primary winding 11a
  • the secondary peripheral winding 12b receives the peripheral magnetic flux generated by the peripheral primary winding 12a (13a respectively).
  • a voltage is generated in the secondary windings connected to the load or loads used.
  • the central secondary winding 11b is then traversed by a current rotating in a third direction about the X axis, and the two peripheral secondary windings 12b, 13b are traversed by a current rotating in a fourth direction about the X axis which is opposed to the third sense.
  • the directions of flow of the current in the different secondary windings 11b, 12b, 13b are alternated as is the case for the primary conductors 11a, 12a, 13a.
  • the peripheral magnetic flux generated by the primary peripheral windings 12a, 13a compensate for the effects of the central magnetic flux generated by the primary central winding 11a.
  • the induction is in particular zero along the two half-lines of the straight line D starting from the two opposite ends of the segment D0.
  • Equipment located in these peripheral regions, and in particular located along the line D or the X axis, are thus very effectively protected against radiation emitted by the windings of the transformer, without the need for recourse a magnetic circuit weighing the transformer or complicating its shape in order to minimize the air gap discussed in the introduction.
  • the phenomenon of compensation of inductions in the peripheral regions illustrated in the right part of the figure 6 can be explained using the figures 7a and 7b .
  • the figure 7a shows the central magnetic induction obtained in the transformer T when power is supplied to the central primary winding 11a alone (the peripheral primary windings 12a, 13a, located on either side, being disconnected).
  • the figure 7b shows the magnetic inductions obtained in the transformer T when current is supplied to the peripheral primary windings 12a, 13a alone (the central primary winding 11a being disconnected).
  • the compensation phenomenon is not limited to the line D but is generalizable outside a ball. Compensation occurs at every point of the space farther from this center of the radius of the ball, in all directions of space.
  • the center of the ball is the intersection between the X axis and a plane intersecting the central conductors 11a, 11b in the particular embodiment. figure 6 .
  • the transformer T may comprise such a magnetic circuit.
  • the magnetic circuit is for example made of mu-metal (single sheet or stacked sheets (laminating)) or ferrite.
  • the magnetic circuit is formed by the casings 2a and 2b.
  • the magnetic circuit has two opposite ends having different positions along the X axis.
  • the primary and secondary windings are confined strictly between these two positions.
  • the magnetic circuit extends beyond the peripheral windings in a direction parallel to the X axis. This makes it possible to improve the coupling between the windings of the transformer T.
  • the figure 8 schematically illustrates a transformer T 'according to another embodiment, said "planar".
  • This embodiment differs from the cylindrical winding embodiment in that the windings are arranged differently.
  • each winding comprises at least one spiral portion arranged transversely to the axis X, that is to say that each winding comprises several spirals wound around each other transversely to the axis X.
  • the two ends of the spiral portion thus have different radial positions with respect to the X axis.
  • a given winding may consist of a single spiral with several turns wound around each other, or may comprise several spiral parts stacked on each other in a direction of stacking parallel to the axis.
  • X each spiral portion comprising a plurality of turns wrapped around the others.
  • each winding has a planar spiral shape extending perpendicular to the X axis.
  • the primary windings 11a, 12a, 13a are coplanar.
  • the secondary windings 11b, 12b, 13b are also coplanar.
  • Each primary winding 11a, 12a, 13a is located in an annular sector around the axis X which is specific to it, the annular sectors being located in different ranges of radial positions with respect to the reference axis X.
  • the transformer T ' may further comprise a magnetic circuit.
  • the magnetic circuit is for example made of mu-metal (single sheet or stacked sheets (laminating)) or ferrite.
  • the magnetic circuit is for example formed by the casings 2a and 2b.
  • the peripheral primary winding 13a is located in an outer annular sector, and the central primary winding 11a is located in an intermediate annular sector, closer to the reference axis X that the outer annular sector, and the peripheral primary winding 12a is located in an inner annular sector, closer to the X axis than the intermediate annular sector.
  • the junction 14a between the primary winding 11a and the primary winding 12a is a portion of the primary hairpin conductor.
  • This portion 14a may be rectilinear or curved (for example U-shaped). It is the same for the junction 15a which connects the primary windings 11a and 13a.
  • the three annular sectors can be contiguous two by two. In other words, the windings are in contact two by two (the junctions 14a and 15a can then form a simple fold).
  • the three primary windings are at a distance from each other; in this case, the junction 14a passes through an annular space between the two windings 11a and 12a, and the junction 15a passes through an annular space between the two windings 11a and 13a.
  • one way of optimizing the compensation phenomenon is to provide for the two annular spaces crossed by the junctions 14a and 15a to be of approximately the same area in a plane perpendicular to the X axis.
  • the primary windings 11a, 12a, 13a may be made on a plate-shaped washer (or "slab") centered on the axis X.
  • the plate is for example made of an electrically insulating material such as epoxy .
  • Each secondary winding 11b, 12b, 13b is arranged facing a primary winding 11a, 12a, 13a, in a direction parallel to the axis X.
  • the transformer according to the "pancake” embodiment can also be of the rotary type.
  • the two housings 2a, 2b have two annular surfaces 22a, 22b facing each other, which extend in two parallel planes offset from one another along the reference axis X .
  • the primary windings 11a, 12a, 13a are fixed to the annular surface 22a of the primary casing 2a, and the secondary windings 11b, 12b, 13b are fixed to the annular surface 22b of the secondary casing 2b, vis-à-vis.
  • Each primary winding faces a secondary winding, regardless of the angular position of the rotor when it rotates relative to the stator around the reference axis X.
  • Compensation can be optimized by dissymmetrizing certain parameters related to peripheral windings (number of turns, dimensions, spacing %) because these peripheral windings are by nature asymmetrical (the average radii are different).
  • This embodiment is particularly advantageous when equipment sensitive to magnetic radiation must be arranged along the reference axis X, in the ball-shaped region.
  • the transformer T ' may further comprise a magnetic circuit.
  • the magnetic circuit is for example formed by the housings 2a, 2b which extend radially with respect to the axis X.
  • the magnetic circuit has two opposite ends having different radial positions with respect to the axis X.
  • the primary and secondary windings occupy a space whose ends are strictly confined between and at a distance from these two radial positions.
  • the magnetic circuit extends beyond the peripheral windings in a direction radial to the X axis. This makes it possible to improve the coupling between the windings of the transformer T '.
  • planar spiral shape of the windings results in different sections offered to the passage of the magnetic flux through the turns. This results in a differential flow which closes outside the transformer T '.
  • a first option to improve the reduction of magnetic leaks is to opt for a number of turns different from the distribution n / 4, n / 2 and n / 4, between the inner side and the outer side (see figure 10 ), so that the peripheral inductions exactly compensate the central induction.
  • Another option is to space the windings differently, in accordance with the figure 11 .

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Claims (13)

  1. Elektrischer Transformator (T, T'), umfassend:
    • eine zentrale Primärwicklung (11a), die sich um eine Achse (X) erstreckt und dafür konfiguriert ist, einen zentralen Magnetfluss zu erzeugen, wenn sie von einem Strom durchflossen wird, der in einer ersten Richtung um die Achse (X) dreht,
    dadurch gekennzeichnet, dass er darüber hinaus umfasst:
    • zwei periphere Primärwicklungen (12a, 13a), zwischen denen die zentrale Primärwicklung (11a) liegt, die sich um die Achse (X) erstrecken und dafür konfiguriert sind, periphere Magnetflüsse zu erzeugen, wenn sie von jeweiligen Strömen durchflossen werden, die in einer zweiten Richtung, welche der ersten Richtung entgegengesetzt ist, um die Achse (X) drehen, wobei sich die peripheren Magnetflüsse mit dem zentralen Magnetfluss überlappen,
    wobei die Wicklungen weiter so konfiguriert sind, dass die peripheren Magnetflüsse den zentralen Magnetfluss in Regionen, die jenseits der peripheren Wicklungen liegen, kompensieren.
  2. Transformator (T, T') nach dem vorstehenden Anspruch, wobei die Primärwicklungen (11a, 12a, 13a) in Reihe geschaltet sind.
  3. Transformator (T, T') nach einem der vorstehenden Ansprüche, wobei:
    • die zentrale Primärwicklung (11a) in einer ersten Wickelrichtung um die Achse (X) gewickelt ist,
    • die peripheren Primärwicklungen (12a, 13a) in einer zweiten Wickelrichtung, die der ersten Wickelrichtung entgegengesetzt ist, um die Achse (X) gewickelt sind.
  4. Transformator (T, T') nach einem der vorstehenden Ansprüche, wobei die peripheren Primärwicklungen (12a, 13a) zusammen eine kumulierte Windungszahl aufweisen, die gleich der Windungszahl der zentralen Primärwicklung (11a) ist.
  5. Transformator (T) nach einem der vorstehenden Ansprüche, wobei jede Primärwicklung mindestens einen schraubenförmigen Teil um die Achse (X) und längs derselben aufweist, wobei sich die schraubenförmigen Teile der drei Primärwicklungen in jeweiligen unterschiedlichen Positionsbereichen längs der Achse (X) erstrecken.
  6. Transformator (T) nach dem vorstehenden Anspruch, weiter einen Magnetkreis umfassend, der zwei entgegengesetzte Enden aufweist, die in einer Richtung parallel zur Achse (X) unterschiedliche Längspositionen aufweisen, und wobei die Primärwicklungen strikt zwischen diese zwei Längspositionen begrenzt und in Abstand zu denselben sind.
  7. Transformator (T') nach einem der Ansprüche 1 bis 4, wobei jede Primärwicklung mindestens einen spiralförmigen Teil aufweist, der quer zur Achse (X) um sich selbst gewickelt ist, wobei sich die spiralförmigen Teile der drei Primärwicklungen in Bezug auf die Achse (X) in jeweiligen unterschiedlichen ringförmigen Positionsbereichen erstrecken.
  8. Transformator (T') nach dem vorstehenden Anspruch, wobei die Primärwicklungen (11a, 12a, 13a) komplanar sind.
  9. Transformator (T') nach einem der Ansprüche 7 bis 8, weiter einen Magnetkreis umfassend, der zwei entgegengesetzte Enden aufweist, die in einer Richtung senkrecht zur Achse (X) unterschiedliche Radialpositionen aufweisen, und wobei die Primär- und Sekundärwicklungen strikt zwischen diese zwei Radialpositionen begrenzt und in Abstand zu denselben sind.
  10. Elektrischer Transformator (T, T') nach einem der vorstehenden Ansprüche, weiter umfassend:
    • eine zentrale Sekundärwicklung (11b), die dafür konfiguriert ist, den zentralen Magnetfluss mindestens zum Teil aufzunehmen.
  11. Elektrischer Transformator (T, T') nach dem vorstehenden Anspruch, weiter umfassend:
    • zwei periphere Sekundärwicklungen (12b, 13b), zwischen denen die zentrale Sekundärwicklung (12b) liegt, wobei jede periphere Sekundärwicklung dafür konfiguriert ist, einen der peripheren Magnetflüsse mindestens teilweise aufzunehmen.
  12. Transformator (T, T') nach einem der Ansprüche 10 bis 11, umfassend ein Primärgehäuse (2a), an dem jede Primärwicklung (11a, 12a, 13a) befestigt ist, und ein Sekundärgehäuse (2b), an dem die oder jede Sekundärwicklung (11b, 12b, 13b) befestigt ist, wobei die zwei Gehäuse (2a, 2b) relativ zur Achse (X) zueinander drehbeweglich sind.
  13. Transformator (T') nach einem der Ansprüche 10 bis 12, umfassend:
    • ein Primärgehäuse (2a), das eine ringförmige Primärfläche (22a) aufweist, die sich senkrecht zur Achse (X) erstreckt, wobei jede Primärwicklung (11a, 12a) an der ringförmigen Primärfläche befestigt ist,
    • ein Sekundärgehäuse (2b), das eine ringförmige Sekundärfläche (22b) aufweist, die sich senkrecht zur Achse (X) und der ringförmigen Primärfläche (22a) gegenüberliegend erstreckt, wobei jede Sekundärwicklung (11b, 12b) so an der ringförmigen Sekundärfläche befestigt ist, dass sie einer Primärwicklung zugewandt ist.
EP17712527.5A 2016-03-30 2017-03-27 Elektrischer wicklungstransformator Active EP3437111B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1652755A FR3049759B1 (fr) 2016-03-30 2016-03-30 Transformateur electrique a enroulements
PCT/EP2017/057219 WO2017167699A1 (fr) 2016-03-30 2017-03-27 Transformateur électrique à enroulements

Publications (2)

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EP3437111A1 EP3437111A1 (de) 2019-02-06
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CN113959465A (zh) * 2021-10-18 2022-01-21 深圳英恒电子有限公司 一种旋转变压器的信号补偿方法和装置

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CA2109652A1 (en) * 1992-11-25 1994-05-26 Richard J. Becker Rotary transformer
US5608771A (en) * 1995-10-23 1997-03-04 General Electric Company Contactless power transfer system for a rotational load
US7019608B2 (en) * 2000-03-21 2006-03-28 Metal Manufactures Limited Superconducting transformer
JP5103728B2 (ja) * 2005-11-24 2012-12-19 ウシオ電機株式会社 放電ランプ点灯装置
US7197113B1 (en) * 2005-12-01 2007-03-27 General Electric Company Contactless power transfer system
US9048022B2 (en) * 2006-08-28 2015-06-02 Youngtack Shim Electromagnetically-countered transformer systems and methods
WO2013017159A1 (en) * 2011-08-01 2013-02-07 Alstom Technology Ltd Current limiter

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Publication number Publication date
US11145454B2 (en) 2021-10-12
EP3437111A1 (de) 2019-02-06
FR3049759A1 (fr) 2017-10-06
US20190385782A1 (en) 2019-12-19
WO2017167699A1 (fr) 2017-10-05
FR3049759B1 (fr) 2018-04-06

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