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EP3707732A1 - Noyau magnétique avec branche de retour - Google Patents

Noyau magnétique avec branche de retour

Info

Publication number
EP3707732A1
EP3707732A1 EP18830178.2A EP18830178A EP3707732A1 EP 3707732 A1 EP3707732 A1 EP 3707732A1 EP 18830178 A EP18830178 A EP 18830178A EP 3707732 A1 EP3707732 A1 EP 3707732A1
Authority
EP
European Patent Office
Prior art keywords
core
laminated cores
pressing
leg
yoke
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP18830178.2A
Other languages
German (de)
English (en)
Inventor
Jörg FINDEISEN
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.)
Siemens Energy Global GmbH and Co KG
Original Assignee
Siemens AG
Siemens Corp
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 Siemens AG, Siemens Corp filed Critical Siemens AG
Publication of EP3707732A1 publication Critical patent/EP3707732A1/fr
Withdrawn legal-status Critical Current

Links

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
    • H01F27/24—Magnetic cores
    • H01F27/245—Magnetic cores made from sheets, e.g. grain-oriented
    • 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
    • H01F27/24—Magnetic cores
    • H01F27/26—Fastening parts of the core together; Fastening or mounting the core on casing or support
    • H01F27/263—Fastening parts of the core together
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F3/00—Cores, Yokes, or armatures
    • H01F3/02—Cores, Yokes, or armatures made from sheets

Definitions

  • the invention relates to a magnetic core with remindInstitutschen Article and a transformer with such a magnetic core.
  • transformers From the field of electrical power distribution technology transformers are known in which the iron core consists of in-plane legs and upper and lower yoke beams connecting the legs. The legs Kings nen be enclosed by windings, which are isolated from each other and to earth. In order to easily control the radial winding forces occurring in the event of a short circuit, windings with circular coils are preferred for power transformers of the type described, which windings are placed on the legs of the transformer core. In order for the core leg a high filling factor, d. H. To achieve optimum filling of the circular cross-section of the winding with magnetic Ma material, the cross section of the legs übli chgue circular with multi-stepped edge leads out.
  • magnetic cores for transformers which have one or more provided with a winding and stepped legs and backhitch legs.
  • the yoke legs are also executed stepped and have an approximately elliptical or oval cross-section.
  • Also known magnetic cores in which the laminated cores of the yoke leg have a uniform sheet width, or in which the back ironing legs is not performed stepped.
  • a magnetic core for a transformer which comprises a core leg, around which a winding is wound. Furthermore, the magnetic core comprises a return leg, which is aligned parallel to the core leg and connected to the core leg via yokes forming a closed magnetic path.
  • the yoke leg is composed of a plurality of mutually parallel and juxtaposed laminated cores whose laminated core widths form a cross-sectional area of the yoke leg.
  • the laminated cores are offset from one another in such a way that a geomet-specific center of gravity of the cross-sectional area is shifted relative to a laminated core of a middle laminated core in the direction of the core leg.
  • a major advantage of the proposed solution is there fore that due to the grading of the laminated cores of the back limb in turning away from a circular, ellip senförmigen or oval cross section of the yoke leg by the shift of the centroid in the direction of the core limb, a reduced magnetic path is achieved, compared with conventional Magnet cores with a circular or oval cross-section of the back leg.
  • the required core sheet material decreases and the total weight of the magnetic core can be reduced.
  • the United reduction of the core sheet material leads advantageously to a reduction in the Ummagnetmaschineswe.
  • Transformer is here representative of an electrical induction device and includes, for example, current limiting chokes.
  • the laminated cores are offset from each other in such a way that laminated core centers of outer laminated cores are opposite to sheet metal keteten inner laminated cores are shifted in the direction of the core leg.
  • laminated core centers of outer laminated cores are opposite to sheet metal keteten inner laminated cores are shifted in the direction of the core leg.
  • the laminated cores are offset from each other such that laminated core centers of the laminated cores of the remind gleichschen cle lie on a curvilinear curve, which are based on the center of the middle laminated core or the middle sheet metal packets are axisymmetric.
  • the laminated cores may for example be following a curvilinear outer contour of a winding. It can thus be achieved optimization of the reduction of the magnetic path at a given outer contour of the Wick ment around the core leg.
  • the laminated cores are displaced relative to each other such that winding-side ends of outer laminated cores are shifted towards the winding side ends of inner laminated cores in the direction of the core leg and a curvature of an outer contour of the Wick development.
  • a fixed minimum distance to the winding which is necessary for the insulation, can be maintained while optimally reducing the magnetic path and thus the core sheet demand.
  • the return leg comprises a Pressein direction for compressing the laminated cores, wherein the
  • Compressing device comprises at least two press units, of which a first press unit compresses all laminated cores of the return limb, and a second press unit compresses only a subset of the laminated cores of the yoke leg.
  • grading the laminated cores can be compressed by means of the division into at least two press units each respective stepped, mutually shifted laminated cores ge more targeted, so that overall can achieve a better pressing action.
  • an internal subset of the laminated cores of the yoke leg is designed to be split. The division he witnesses a first pressing area on which the first pressing unit acts with a pressing force, and a spatially separated from the first pressing area second pressing area on which the second pressing unit with a pressing force acts.
  • a gap forming a cooling passage is formed at a junction between the divided laminated cores, with the gap, viewed in cross section, extending perpendicular to the laminated cores. Since this cooling channel is bounded by the inner end faces of the laminated cores, the high thermal conductivity of the core material in the longitudinal direction can be exploited. This allows a higher Ab stand between cooling channels and thus an overall reduction of the cooling channels. There are no cooling channels required parallel to the stratification of the laminated cores. This reduces the volume requirement for cooling channels and the filling factor of the magnetic core can be increased.
  • At least one pressing unit is designed as a bandage or tension band, which spans the associated pressing area.
  • This corresponds to a particularly effective and easy to implement press unit, which is particularly ge suitable for the present staggered laminated cores.
  • At least one pressing unit on a press on bolt which two outside of the yoke legs and opposing pressing elements, preferably pressed before pressing bars on the yoke leg.
  • a defined pressing force can advantageously be achieved.
  • At least one pressing unit is provided with longitudinally disposed of the return limb pressing beam and these pressing bars are made of a metallic material and the winding side provided with an electrical shield forming round end surface.
  • the distance of the end surface to the outer contour of the winding equal to or less than the distance of an outer laminated core to the outer contour of the winding.
  • the core leg comprises a plurality of
  • Laminated cores which are aligned parallel to the laminated core of the return limb, wherein an internal subset of the laminated cores of the yoke leg is designed to be split, wherein the division is such that between tween the split sheet metal piles a cooling channel forming gap is formed, which is perpendicular to the Blechpa keten extends.
  • the number of steps formed by the laminations of the yoke leg preferably deviates from the number of steps formed by the laminations of the core limb.
  • the number of formed steps of the return limb is less.
  • the magnetic path is thereby further reduced.
  • the cooling channels of the yoke leg and or the core leg are perpendicular to the layer direction angeord net and gebil det by division of a subset of the laminated cores.
  • a transformer is proposed, which comprises a magnetic core according to one of the previous embodiments. This has the advantages of the above-described embodiment forms of the magnetic core.
  • the transformer comprises a transformer vessel with two opposite inner walls, between which the remindschlußschenkel is at least partially and where elements in the remindschlußschenkel via two opposite, depending Weil Weil laterally applied to the yoke leg pressing, preferably pressing beam, resting against the inner walls.
  • the magnetic core can be clamped in the Transformatorge vessel, which is particularly advantageous for transports.
  • the transformer vessel comprises a bulge into which the return limb at least partially protrudes and in which the two opposite inner walls are arranged.
  • a stiffening forming inner walls of the transformer vessel provide for a particularly stable Arre orientation of the yoke leg and thus of the magnetic core to the transformer vessel wall, which is particularly suitable for the occurring during transport, acting on the magnetic core forces.
  • At least two opposing support elements are positioned on the pressing elements, which are in contact with the respective inner wall and with the pressing elements, preferably pressing beams, of the return leg and support the return leg between the inner walls. Since by a stable support of the back leg he testifies. Furthermore, via this support arrangement, a different bear tion of the inner wall of the vessel of the transformer on the yoke leg when loading the transformer vessel wall by vacuum during the filling process of the transformer possible.
  • Figure 1 shows a magnetic core with a backhitch of the
  • FIG. 2 shows a magnetic core according to the invention with a return leg in cross-sectional view
  • FIG. 3 shows a magnetic core according to the invention with several
  • FIG. 4 shows a magnetic core according to the invention with a return limb in a cross-sectional view according to a further embodiment
  • FIG. 5 shows a magnetic core according to the invention with a core leg in a perspective view
  • FIG. 6 shows a magnetic core according to the invention with a return leg in cross-sectional view according to a further embodiment
  • FIG. 7 shows a yoke leg according to the invention in a side view
  • FIG. 8 shows a yoke leg according to the invention in a side view according to a further embodiment
  • FIG. 9 shows a transformer according to the invention in FIG.
  • FIG. 10 shows a magnetic core according to the invention in perspective view according to a further embodiment
  • Figure 11 shows a magnetic core according to the invention in perspektivi shear view according to another embodiment
  • FIG. 12 shows a magnetic core according to the invention with a return leg in cross-sectional view according to a further embodiment.
  • FIG. 1 shows a conventional magnetic core 1 of the prior art in cross-sectional view.
  • a core leg 10 which carries a winding 12, connected via a yoke 60 with a return leg 20.
  • the return limb 20 is made of laminated cores 21, which are stepped and which together form a cross-sectional area. The offset takes place in such a way symmetrical that results in an elliptical cross-sectional area.
  • a center M of the middle laminated core coincides with the centroid of the cross-sectional area of the return leg 20.
  • winding 12 core leg 10 is stepped in this way. This results in a largely run de core leg cross-sectional area 19.
  • the return leg 20 has the same number of stages as the wound core leg 10.
  • the sheet width of the steps is preferably significantly reduced compared to the wound core leg (about 50%).
  • the distance between winding-side ends of the laminated cores of the yoke leg 20 and winding 12 increases continuously from inner to outer laminated cores 21. This results in an equal mean magnetic path length for all stages.
  • FIG. 2 shows a magnetic core 1 according to the invention for a transformer or even more generally for an electrical induction device.
  • the magnetic core 1 in this case comprises a core leg 10, around which a winding 12 is wound.
  • the core leg 10 is preferably composed of a plurality of laminated cores and preferably has one circular core leg cross-sectional area 19, the invention is not limited thereto.
  • the magnetic core 1 comprises a return leg 20, which is aligned parallel to the core leg 10.
  • the conclusion leg 20 is connected to the core leg 10 via a yoke 60, which is shown here in cross-section as a projection for illustration.
  • the yoke 60 may be composed of laminated cores.
  • the remindschlußschenkel 20 is composed of a plurality of paral lel each other aligned and contiguous sheet metal packets 21.
  • the laminated core widths form a cross-sectional area 27 of the short-circuit leg 20.
  • the laminated cores 21 are offset from one another in such a way that a geo metric centroid S of the cross-sectional area 27 GE compared to a laminated center M of a middle laminated core 23 in the direction R of the core leg 10 is moved.
  • the direction R is determined by the connecting line between the centers of the yoke leg 20 and the core leg 10.
  • the magnetic path is reduced in comparison to equal to example Figure 1, so that it due to the resulting in a centroid shift Staging upon departure from a circular or oval cross-section of the shorting leg results in an overall reduced magnetic path compared to conventional magnetic cores. Consequently, the required Kernblechmate rial and the total weight of the yoke leg 20 and thus of the magnetic core 1 is reduced.
  • the reduction of the core sheet material leads advantageously to a re duzierung the Ummagnetmaschinesppe.
  • the laminated cores 21 are added to each other such that the laminated core centers outer Blechpake te 22 against laminated core centers inner laminated cores 22 'in the direction R of the core leg 10 are moved, see this example 22 relative to 22 ', which applies in this form Ausure approximately in pairs for all laminated cores. This advantageously produces a lesser magnetic path from stage to stage.
  • the laminated cores 21 are preferably added to one another in such a way that laminated core centers of the laminated cores 21 of the short-circuit leg 20 lie on a curvilinear curve, which is axisymmetric with respect to the center M of the central laminated core 23 or the middle laminated cores.
  • a curvature is achieved which, in particular, can be selected suitably for a curved outer contour 14 of the winding 12.
  • An offset 26 of adjacent wick lung remote ends 25 of the laminated cores 21 of inner Blechpa keten 22 'towards outer laminated cores 22 increases thereby.
  • the laminated core are shown in the figure 1 as points shows.
  • This laminated core centers of the laminated cores 21 are located on a curvilinear curve, which tends toward the core leg 10 when the curve of the centers of inner Blechpa keten 22 'to outer laminated cores 22 is based.
  • the curvature of the winding 12 simulated and a suitable distance, for example, an equal distance of all laminated cores to the outer contour 14 winding 12 observed who the.
  • Another advantageous feature of the relative positioning tion of the laminated cores 21 can be achieved in that the laminated cores 21 are offset from each other such that wound development side ends 24 outer laminated cores 22 against winding side ends 24 inner laminated cores 22 'in the direction R of the core leg 10 are moved , In particular, the winding-side ends 24 follow a curvature of an outer contour 14 of the winding 12. This has the advantage that a provokeab stood to the winding 12 is always observed.
  • FIG. 3 shows a perspective view of a magnetic core 1 with a plurality of core legs 10.
  • a five-limb core is disclosed wel cher three provided with a winding 12 core leg 10 as two outer yoke legs 20 has, the invention is not limited thereto.
  • the laminated cores 21 are arranged as described in Figure 2 and shifted relative to each other and offset in the direction R of the core leg 10. This results in a crescent-shaped sheet metal package arrangement in the back yoke legs.
  • the magnetic inference is not only on the yokes 60, but also on the two outer back limb 20, the cross section of the yokes 60 can be chosen significantly lower than that of the windings 12 because of the resulting dividing division of the magnetic flux carrying core legs 10.
  • FIG. 4 shows a cross-sectional view of a magnetic core 1.
  • An inner contour 15 of the winding 12 is determined by the electrically required distance from the outer contour of the core leg 10, preferably a core circle.
  • the relative displacement of the laminated cores 21 of the yoke leg 20 takes place accordingly the electrically necessary distance to the winding 12, ie in particular to its outer contour 14.
  • the winding ends egg tigen ends 24 of the laminated cores 21 of the yoke leg 20 are moved according to the electrically required distance from the core leg 10 and form at least partially ei ne to the winding diameter spaced curve, which follows the outer contour 14 of the winding, preferably equidistant egg NEN minimum distance complies follows.
  • the winding-distal ends 25 of the outer laminated cores 21 do not follow the distance curve Winding 12 but close in height of the adjacent sheet metal package, ie, the two winding remote ends 25 are not offset from each other.
  • the outer electrical cal edge is high voltage defused and facilitates the mechanical cal fastening.
  • FIG 5 is another perspective embodiment of a magnetic core 1 is shown.
  • This magnetic core 1 has exactly one core leg 12 carrying a winding 12 and two yoke legs 20 designed according to the invention.
  • the core leg 10 may be stepped such that a substantially round core leg cross-sectional area 19 results, as shown in Figure 2.
  • the laminated cores 21 of the yoke legs 20 are each offset to the outside in an increasing extent in the direction of the winding 12 and thus surround the winding 12 semi-moon shaped or in other words mondsichelför mig.
  • the upper yoke 60 'and the lower yoke 60 are executed elliptical in this Austrac approximately purely exemplary, the invention is not limited thereto.
  • FIG. 6 shows a magnetic core 1 with a yoke leg 20 in cross-sectional view.
  • the conclusion leg 20 includes in this exemplary embodiment, a pressing device for compressing the laminated cores 21, the Presseinrich device comprises two press units 30, 40. Alternatively, more than two press units 30, 40 can be provided.
  • a first press unit 30 presses all the laminated cores 21 of the yoke leg 20 together, while a second press unit 40 only a subset of the laminated cores 21 of Yoke leg 20 is compressed.
  • the first Pressein unit 30 is on the inside facing the winding 12 and the second pressing unit 40 is outboard of the winding 12 meet positioned positioned.
  • An internal subset of the laminated cores 21 of the return limb 20 is further ge splits in this embodiment executed, wherein the division of a first pressing portion 32, on which the first pressing unit 30 with a pressing force, and a spatially separated from the first pressing portion 32 second pressing portion 42nd , on which the second pressing unit 40 acts with a pressing force produced, wherein a gap 28 at a transition between the split sheet metal packets 21 'is formed.
  • the gap 28 thus forms a cooling channel. Preference is given to the gap 28, viewed in cross-section, perpendicular to the laminated cores 21, 21 'aligned tet.
  • one or more press beams can be pressed against the laminated cores 21, for example by means of press studs.
  • the core leg 10 includes a plurality of laminated cores 16, which are aligned paral lel to the laminated cores 21 of the yoke leg 20, wherein an internal subset of Blechpa kete 16 'of the yoke leg 20 is executed divided. Again, the division is made such that between the ge shared sheet metal pawls 16 ', a gap 18 is formed, which extends perpendicular to the laminated cores 16, 16'.
  • FIG. 7 shows a return leg 20 with two press sections 32, 42, wherein each press section 32, 42 is assembled by a press unit as described in FIG. is pressed.
  • the press units are in this exemplary embodiment leads out as bandages 34, 44 or tension bands.
  • bandages 34, 44 are the Blechpake te 21 'of the yoke leg 20 provided with corresponding Schlit zen or split in the longitudinal direction performed.
  • the bandages 34, 44 and tension bands of both press units are arranged offset from one another to the same acting as a cooling channel gap 28 between the
  • the number of bandages 34, 44 or straps of the press units may differ from each other to meet the under different geometric requirements.
  • a yoke leg 20 is shown with two pressing areas, which are each provided with their own press bars 36, 46 and pressed by pressing bolts 37, 47 who the.
  • FIG. 9 shows a transformer 100 with a magnetic core 1 according to the invention.
  • the transformer 100 in this case summarizes a transformer vessel 110, in which the Mag netkern 1 is arranged.
  • the transformer 100 further comprises a transformer vessel 110 with two opposing inner walls 114. Between the inner walls 114 is at least partially the return limb 20.
  • a winding near first press unit 30 and a winding remote second press unit 40 wherein the winding-near press unit 30 all laminated cores 21 and the winding-remote press unit 40 only a subset of the laminated cores 21 compresses.
  • the return limb 20 abuts on the inner walls 114 via two opposite pressing elements, in each case laterally on the return limb 20, preferably pressing bars 36, so that the return limb 20 is supported against the inner wall 114 via the press units or their pressing elements.
  • the transformer vessel 110 comprises a bulge 112, into which the return limb 20 at least partially protrudes.
  • the opposite inner walls 114 are arranged inside the bulge 112, against which the pressing elements abut.
  • at least two opposing support elements 120 can be positio ned on the pressing elements, which are in contact with the respective inner wall 114 and with the pressing elements, preferably pressing bars 36, 46, of the return leg 20 and support the return limb 20 between the inner walls 114.
  • the inner walls 114 thus exert a pressing pressure, imparted via the pressing element, on the thus clamped remindschen Article 20.
  • the bulge 112 of the transformer vessel 110 in the region of the yoke leg 20 is in width to the
  • the inner wall 114 forms a natural Ver stiffening for locking the magnetic core 1 in the transformer vessel 110 and presses on the pressing elements. In the Darge presented special embodiment, this is stirnseiti ge a stiffening inner wall portion forming a Arretie tion of the magnetic core 1 for the forces occurring during transport of the Transforma sector 100. Furthermore, a different bear tion of the inner wall 114 on the yoke leg 20 at loading load of the transformer vessel wall through Vacuum Biphilll the process of the transformer 100 possible.
  • the core 12 carrying the winding 12 is designed with a gap 18 serving as a cooling channel, while those due to their lower Cross-section and open arrangement thermally less bean spruchten return legs 21 are designed without cooling channel.
  • FIG. 10 shows a further exemplary embodiment of a magnetic core 1.
  • the laminated cores 64 of the yokes 60 which have a yoke cross-section 62, with its centroid in the direction of the winding Wick 12 are arranged offset.
  • Several laminated cores 64 of the Jo 60 Ches close example linear with the same distance from the winding 12 from.
  • the laminated cores 64 of the yokes 60 are exemplified in relation to the center of the middle Blechpa ketes of the yokes shifted so that a yoke edge on the winding 12 and the core leg 10 facing side forms a line.
  • FIG. 11 in addition to the lower yoke 60 with a yoke cross-section 62, an upper yoke 60 'with a yoke cross-section 62' is shown opposite FIG.
  • the upper yoke 60 may be oval or elliptical
  • FIG. 12 shows a further embodiment of a magnetic core 1 with a short-circuit leg 20.
  • the yoke leg 20 in this case comprises two press units 30, 40.
  • the first press unit 30, which positi oniert on the winding side, is provided with along the yoke leg 20 arranged pressing bar 36.
  • pressing bolts 37 used for pressing are applied, which exert a pressing force on the laminated cores.
  • Pressbeilageieri 38, 48 which bear against the outer surfaces of mutually offset outer laminated cores, and wherein on the outer surface turn the pressing beam 36, 46 abut.
  • the pressing bars 36 are preferably made of a metallic material and on the winding side provided with a round end surface 39 forming an electrical shielding.
  • the distance of the end surface 39 to the outer contour 14 of the winding 12 is equal to or smaller than the distance of an outer laminated core 21 to 20 personallykon structure of the winding.
  • the laminated cores 21 may be offset in other embodiments and such that the winding-side ends 24 form a gera de end surface.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)

Abstract

La présente invention concerne un noyau magnétique (1) pour un transformateur, qui comprend un noyau central (10) autour duquel est enroulé un enroulement (12), et une branche de retour (20) qui est orientée parallèlement au noyau central (10) et est reliée au noyau central (10) par le biais de culasses (60) de manière à former un chemin magnétique fermé. La branche de retour (20) est en outre composée d'une pluralité de noyaux feuilletés (21) orientés parallèlement les uns aux autres et placés les uns à côté des autres dont les largeurs forment une surface transversale de la branche de retour (20). Les noyaux feuilletés (21) sont décalés les uns par rapport aux autres de manière qu'un barycentre géométrique (S) de la surface transversale est décalé par rapport à un centre (M) d'un noyau feuilleté central (23) en direction (R) du noyau central (10).
EP18830178.2A 2017-12-28 2018-12-12 Noyau magnétique avec branche de retour Withdrawn EP3707732A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017223839.9A DE102017223839A1 (de) 2017-12-28 2017-12-28 Magnetkern mit Rückschlussschenkel
PCT/EP2018/084609 WO2019129491A1 (fr) 2017-12-28 2018-12-12 Noyau magnétique avec branche de retour

Publications (1)

Publication Number Publication Date
EP3707732A1 true EP3707732A1 (fr) 2020-09-16

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP18830178.2A Withdrawn EP3707732A1 (fr) 2017-12-28 2018-12-12 Noyau magnétique avec branche de retour

Country Status (3)

Country Link
EP (1) EP3707732A1 (fr)
DE (1) DE102017223839A1 (fr)
WO (1) WO2019129491A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102024104075A1 (de) * 2024-02-14 2025-08-14 Intica Systems Se Transformator, Baugruppe und Verfahren zur Herstellung eines Transformators

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1142347A (fr) * 1955-03-15 1957-09-17 Smit & Willem & Co Nv Circuit magnétique
DE29514508U1 (de) * 1995-09-09 1995-11-02 Vacuumschmelze Gmbh, 63450 Hanau Blechpaket für Magnetkerne zum Einsatz in induktiven Bauelementen mit einer Längsöffnung
CN105070484A (zh) * 2015-09-07 2015-11-18 上海稳得新能源科技有限公司 非矩形截面铁心e型节能节材变压器

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR619593A (fr) * 1925-12-05 1927-04-05 Alsacienne Constr Meca Procédé de refroidissement de la culasse supérieure des transformateurs
CN2263819Y (zh) * 1996-05-15 1997-10-01 丁百人 变压器卵形轭铁
DE19741364C2 (de) * 1997-09-19 2000-05-25 Vacuumschmelze Gmbh Verfahren und Vorrichtung zur Herstellung von aus Blechlamellen bestehenden Paketen für Magnetkerne
DK3001435T3 (en) * 2014-09-29 2018-01-22 Siemens Ag The dry transformer core
EP3018664B1 (fr) * 2014-11-06 2020-06-17 Siemens Aktiengesellschaft Noyau magnétique pour un dispositif d'induction électrique

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1142347A (fr) * 1955-03-15 1957-09-17 Smit & Willem & Co Nv Circuit magnétique
DE29514508U1 (de) * 1995-09-09 1995-11-02 Vacuumschmelze Gmbh, 63450 Hanau Blechpaket für Magnetkerne zum Einsatz in induktiven Bauelementen mit einer Längsöffnung
CN105070484A (zh) * 2015-09-07 2015-11-18 上海稳得新能源科技有限公司 非矩形截面铁心e型节能节材变压器

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2019129491A1 *

Also Published As

Publication number Publication date
WO2019129491A1 (fr) 2019-07-04
DE102017223839A1 (de) 2019-07-04

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