WO2006087294A1 - Transformatorkern mit magnetischer abschirmung - Google Patents
Transformatorkern mit magnetischer abschirmung Download PDFInfo
- Publication number
- WO2006087294A1 WO2006087294A1 PCT/EP2006/050827 EP2006050827W WO2006087294A1 WO 2006087294 A1 WO2006087294 A1 WO 2006087294A1 EP 2006050827 W EP2006050827 W EP 2006050827W WO 2006087294 A1 WO2006087294 A1 WO 2006087294A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- core
- shield
- transformer
- transformer core
- interior
- Prior art date
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
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
- H01F27/36—Electric or magnetic shields or screens
- H01F27/366—Electric or magnetic shields or screens made of ferromagnetic material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
- H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
-
- 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
- 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
- H01F27/36—Electric or magnetic shields or screens
-
- 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 transformer core with a core interior of magnetizable material.
- Transformer core is any magnetizable core for the intended use in an electromagnetic machine, such. a transformer or a choke.
- the core of the invention in the sense of the present invention is the magnetizable part of the transformer core for guiding the magnetic flux.
- DE 36 27 890 A1 describes a transformer with a magnetic shield and a method for producing such a shield.
- the transformer has a three-legged lamination stack with transformer windings wound around the middle limb, wherein the magnetic armature is wound on the armature core
- Shield consists of a copper shorting strip, which is guided transversely to the longitudinal direction of the leg around the laminated core and the windings.
- DE 39 40 025 Al discloses a shield ⁇ winding transformer for magnetizable material. The shielding of the invention is between two
- a disadvantage of this known from the prior art windings that although external disturbances can be prevented to the entire coil body, that are not magnetic leakage fluxes page within the bobbin, in particular on the core outer ⁇ prevented.
- the object of the present invention is therefore to reduce or prevent the magnetic stray fluxes acting on the outside of the core interior and, if present, inside the tensioning device on the outside of the core interior.
- the waste Shielding has a layered structure with at least one magnetizable material.
- layered magnetizable materials such as electrical sheets, conducts the leakage flux into the sheets and causes little power loss in the laminated shield. Due to the guidance of the leakage magnetic fluxes ⁇ ⁇ no eddy currents are in the outside of the core inside generated, so that the power losses and local He ⁇ ⁇ ⁇ rmungen within these ranges greatly reduced relate be hung as completely avoided.
- the power losses within the shield and localized heating are ge ⁇ genüber a transformer core according to the invention without shielding greatly reduced.
- a device for generating an axial pressure on the core inside is arranged between the core interior and the shielding from ⁇ .
- the use of a ge ⁇ coated core inside requires permanent maintenance of an axial pressure to the layered Kernin- nere.
- These devices which are usually also referred to as tensioning devices, are arranged directly on the core of the core. Because of the need for high strength, these devices for generating axial pressure often consist of electrically and magnetically conductive materials, such as steel or other metallic sheets.
- Within these clamping devices for generating an axial pressure locally high heating and power losses are caused by induced eddy currents in magnetic interference.
- the clamping device is constructed of laminated metals, which - like theêtbe ⁇ rich core of the inside - are also divided into segments. This minimizes the maximum according to the prior art possible power of the transformer using the ⁇ described transformer core.
- the shield is divided into segments.
- the subdivision of the shield into segments permits a rapid and modular construction of the shield around the core interior or around the device for exerting the axial pressure.
- the segmental structure of Abschir ⁇ tion also allowed to make a reasonable directly to the transformer fit shielding.
- the risk of large local overheating of the device for generating the axial pressure and / or the outer core regions is prevented.
- transformers with larger stray fluxes can be built more reliably than before.
- the power losses when using a transformer core according to the invention are substantially reduced.
- the length of the Abschir ⁇ mung in the axial direction is equal to or greater than an intended coil bobbin around the transformer core.
- the shield may be arranged along the entire transformer leg, and so also the negative stray magnetic influences on the final yoke and other optional structural elements cute re ⁇ .
- the orientation of the layered structure of the shield parallel to a possible Lich stray flux direction of a magnetic field is aligned. The orientation may be aligned parallel with respect to the generated within the transformer or with respect to an external possible leakage flux direction. The magnetic flux is ideally guided along the stratification and thus led away at the tensioning device or from the outer regions of the inner core.
- a preferred feature of the invention is that the core interior is composed of layered core segments and the
- Shield along the outside of the outermost core segment or along the device for generating an axial pressure is arranged.
- the shield is fixed together with the core inside with a - usually insulating bandage.
- a - usually insulating bandage In ⁇ within the bandage the shield with a Isolierma ⁇ material - for example, pressboard or cast resin - additionally fixed and electrically insulated.
- the magnetizable material of the shield is an electrical sheet, as used in electromagnetic devices.
- Figure 1 is a schematic sectional view of the transformer core according to the invention with zwie surrounding bobbin.
- FIG. 2a Schematic cross-sectional sectional view of the transformer core according to the invention with two integral shields
- Fig. 2b Schematic cross-sectional drawing of the transformer core according to the invention with two depending Weil ⁇ segmentally constructed shields.
- FIG. 1 shows a schematic sectional view of the transformer core 1 according to the invention along the axial orientation of the transformer core 1.
- a tensioning device 3 for generating an axial pressure on the core 2 and the bobbins 5 is visible.
- a shield 4 is arranged, which is an intrusion of the scattering ⁇ flow - caused by the electrical currents in the surrounding bobbins 5 - in the inner core 2 and in the clamping device 3.
- Kerninneres 2, jig 3 and the shield 4 with fixed a bandage 6.
- the bandage 6 meets - with appropriate choice of material - as an insulating sheathing around the inner core 2 another function.
- the longitudinal axis along the transformer core 1 is shown as gestri ⁇ smiled line.
- the figures Fig. 2a and Fig. 2b respectively show a cross-section of the transformer core according to the invention 1.
- an interior core 2 encloses Spannvorrich- tung 3 clearly visible.
- the clamping device 3 can in the radial direction either continuous or segmented been expanding its ⁇ .
- the shield 4 connects to the clamping device 3 according to the figures Fig. 2a and 2b.
- the shield 4 may have a layered structure along the entire surface to be shielded.
- FIG. 2 b a segment-wise construction of layered elements of the shield 4 with respect to a modular structure of the transformer is shown.
- the shield 4 Via an outer bandage 6, the shield 4, which encloses either the transformer core 1 completely but at least along the orientation of the yoke, the shield 4 is fixed.
- the fixation of the shield 4 to the inner core 2 may alternatively via fasteners to the inner core 2, with the clamping device 3 or with other fasteners (not shown). Fixation of the shielding 4 by means of the material consolidation of the shielding under tension or pressure around the inner core 2 or the tensioning device 3 is also possible.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Regulation Of General Use Transformers (AREA)
- Coils Of Transformers For General Uses (AREA)
- Coils Or Transformers For Communication (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
MX2007009717A MX2007009717A (es) | 2005-02-16 | 2006-02-10 | Nucleo de transformador con blindaje magnetico. |
EP06708170.3A EP1849169B1 (de) | 2005-02-16 | 2006-02-10 | Transformatorkern mit magnetischer abschirmung |
CA2597934A CA2597934C (en) | 2005-02-16 | 2006-02-10 | Transformer core with magnetic screening |
BRPI0607872-9A BRPI0607872A2 (pt) | 2005-02-16 | 2006-02-10 | núcleo de transformador com anteparo magnético |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005008302.1 | 2005-02-16 | ||
DE102005008302A DE102005008302B4 (de) | 2005-02-16 | 2005-02-16 | Transformatorkern mit magnetischer Abschirmung |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006087294A1 true WO2006087294A1 (de) | 2006-08-24 |
Family
ID=36177826
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2006/050827 WO2006087294A1 (de) | 2005-02-16 | 2006-02-10 | Transformatorkern mit magnetischer abschirmung |
Country Status (10)
Country | Link |
---|---|
EP (1) | EP1849169B1 (de) |
KR (1) | KR101003933B1 (de) |
CN (1) | CN101120421A (de) |
BR (1) | BRPI0607872A2 (de) |
CA (1) | CA2597934C (de) |
DE (1) | DE102005008302B4 (de) |
MX (1) | MX2007009717A (de) |
RU (1) | RU2412498C2 (de) |
UA (1) | UA88942C2 (de) |
WO (1) | WO2006087294A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2018107224A (ja) * | 2016-12-26 | 2018-07-05 | 株式会社日立産機システム | 静止誘導電器 |
CN117095915A (zh) * | 2023-06-26 | 2023-11-21 | 西安西电变压器有限责任公司 | 铁心、铁心结构及变压器 |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ATE549725T1 (de) | 2007-10-29 | 2012-03-15 | Siemens Transformers Austria Gmbh & Co Kg | Transformatorkern mit streufeldschirmung |
EP2472534B1 (de) * | 2009-11-20 | 2020-10-07 | Mitsubishi Electric Corporation | Wandler |
CN101777416B (zh) * | 2010-03-15 | 2011-12-14 | 贵阳新星变压器有限公司 | 壳式变压器矩形圆角铁芯 |
CN102163488A (zh) * | 2010-11-25 | 2011-08-24 | 文泽生 | 非晶油浸式全磁屏蔽空芯电抗器 |
CN106571210B (zh) * | 2015-10-09 | 2018-10-12 | 特变电工沈阳变压器集团有限公司 | 一种110kV变压器 |
DE102020215178A1 (de) | 2020-12-02 | 2022-06-02 | BSH Hausgeräte GmbH | Transformator für ein Schaltnetzteil |
WO2022225498A1 (ru) | 2021-04-19 | 2022-10-27 | Леонид Адамович БИЛЫЙ | Трехфазный трансформатор |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1277434B (de) * | 1963-09-10 | 1968-09-12 | Westinghouse Electric Corp | Magnet- und Koronaschild fuer elektrische Induktionsgeraete |
US3464041A (en) * | 1968-03-06 | 1969-08-26 | Allis Chalmers Mfg Co | Electrical transformer having leakage flux shield |
CH484499A (de) * | 1968-06-29 | 1970-01-15 | Bbc Brown Boveri & Cie | Induktionsgerät, insbesondere Transformator oder Drosselspule |
US3962661A (en) * | 1975-04-22 | 1976-06-08 | International Telephone And Telegraph Corporation | Magnetically shunted current transformer |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1237677B (de) * | 1964-08-01 | 1967-03-30 | Siemens Ag | Magnetschildanordnung fuer geschichtete Eisenkerne von Transformatoren und Drosselspulen |
NL7904379A (nl) * | 1979-06-05 | 1980-12-09 | Philips Nv | Transformator. |
JPS5793512A (en) * | 1980-12-03 | 1982-06-10 | Meidensha Electric Mfg Co Ltd | Fixation of bound iron core and winding |
DE3141972A1 (de) * | 1981-10-22 | 1983-05-11 | Transformatoren Union Ag, 7000 Stuttgart | Eisenkern fuer elektrische drosseln |
JPS61259512A (ja) * | 1985-05-14 | 1986-11-17 | Fuji Electric Co Ltd | 放射状ブロツク鉄心 |
DE3627890A1 (de) * | 1986-08-16 | 1988-02-25 | Philips Patentverwaltung | Transformator mit einer magnetischen abschirmung und verfahren zur herstellung einer solchen abschirmung |
DE3940025A1 (de) * | 1989-12-04 | 1991-06-06 | Michael Riedel Transformatoren | Abschirmwicklung fuer transformatoren aus magnetisierbarem material |
DE59009514D1 (de) * | 1990-09-27 | 1995-09-14 | Siemens Ag | Verfahren zum Verringern von Hysterese und elektromechanischer Wandler mit Hysterese-Verringerung. |
DE10350262A1 (de) * | 2002-12-16 | 2004-07-22 | Siemens Ag Österreich | Übertrager mit einem Kern und einem Spulenkörper |
-
2005
- 2005-02-16 DE DE102005008302A patent/DE102005008302B4/de not_active Expired - Fee Related
-
2006
- 2006-02-10 EP EP06708170.3A patent/EP1849169B1/de not_active Not-in-force
- 2006-02-10 UA UAA200709314A patent/UA88942C2/ru unknown
- 2006-02-10 KR KR1020077020279A patent/KR101003933B1/ko not_active IP Right Cessation
- 2006-02-10 BR BRPI0607872-9A patent/BRPI0607872A2/pt not_active Application Discontinuation
- 2006-02-10 CA CA2597934A patent/CA2597934C/en not_active Expired - Fee Related
- 2006-02-10 RU RU2007134373/07A patent/RU2412498C2/ru not_active IP Right Cessation
- 2006-02-10 CN CNA2006800051030A patent/CN101120421A/zh active Pending
- 2006-02-10 WO PCT/EP2006/050827 patent/WO2006087294A1/de active Application Filing
- 2006-02-10 MX MX2007009717A patent/MX2007009717A/es active IP Right Grant
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1277434B (de) * | 1963-09-10 | 1968-09-12 | Westinghouse Electric Corp | Magnet- und Koronaschild fuer elektrische Induktionsgeraete |
US3464041A (en) * | 1968-03-06 | 1969-08-26 | Allis Chalmers Mfg Co | Electrical transformer having leakage flux shield |
CH484499A (de) * | 1968-06-29 | 1970-01-15 | Bbc Brown Boveri & Cie | Induktionsgerät, insbesondere Transformator oder Drosselspule |
US3962661A (en) * | 1975-04-22 | 1976-06-08 | International Telephone And Telegraph Corporation | Magnetically shunted current transformer |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2018107224A (ja) * | 2016-12-26 | 2018-07-05 | 株式会社日立産機システム | 静止誘導電器 |
CN117095915A (zh) * | 2023-06-26 | 2023-11-21 | 西安西电变压器有限责任公司 | 铁心、铁心结构及变压器 |
Also Published As
Publication number | Publication date |
---|---|
EP1849169B1 (de) | 2016-06-15 |
EP1849169A1 (de) | 2007-10-31 |
CA2597934C (en) | 2015-04-14 |
UA88942C2 (xx) | 2009-12-10 |
DE102005008302B4 (de) | 2010-09-02 |
DE102005008302A1 (de) | 2006-08-24 |
RU2007134373A (ru) | 2009-03-27 |
RU2412498C2 (ru) | 2011-02-20 |
CA2597934A1 (en) | 2006-08-24 |
KR20070103052A (ko) | 2007-10-22 |
KR101003933B1 (ko) | 2010-12-30 |
MX2007009717A (es) | 2007-09-26 |
BRPI0607872A2 (pt) | 2009-10-20 |
CN101120421A (zh) | 2008-02-06 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1849169B1 (de) | Transformatorkern mit magnetischer abschirmung | |
DE2915791C2 (de) | Starkstromtransformator oder Drossel | |
DE19934767A1 (de) | Magnetisches Bauelement | |
DE102005047451A1 (de) | Synchronmaschine | |
DE102004025076B4 (de) | Spulenanordnung und Verfahren zu deren Herstellung | |
DE3029416A1 (de) | Starkstromtransformator oder -drossel | |
EP2546842A2 (de) | Spule zur Strombegrenzung | |
DE202005008726U1 (de) | Transformator | |
EP1864303B1 (de) | Magnetkern | |
DE2953100C1 (de) | Hochspannungs-Transformations- und Gleichrichtereinrichtung | |
DE3507316C2 (de) | ||
DE3744122A1 (de) | Umgekehrter transformator | |
EP2975618B1 (de) | Kern für eine elektrische Induktionseinrichtung | |
EP2040512B1 (de) | Vorrichtung und Verfahren zum induktiven Erwärmen eines elektrisch leitenden Werkstücks | |
EP0821375A1 (de) | Verwendung einer Entstördrossel in Schaltnetzteilen | |
WO2008125288A1 (de) | Elektrisches bauteil mit wicklung und anzapfung | |
AT243915B (de) | Elektromagnetische Spule für Transformatoren, Drosseln u. dgl. | |
DE102020211253A1 (de) | Transformator | |
WO2024074465A1 (de) | Verfahren zum herstellen einer cofe-legierung für ein blechpaket | |
EP4325536A2 (de) | Magnetkern mit schutzgehäuse | |
DE2800750A1 (de) | Eisenkern fuer einen hochspannungstransformator niedriger leistung | |
DE2653591A1 (de) | Hochleistungs-transformator fuer ultra-hochspannung | |
EP0602528A1 (de) | Transformator | |
DE19847272B4 (de) | Verfahren zum Herstellen von Sintermetallkernen | |
DE1438461A1 (de) | Elektromagnetische Spule |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 2006708170 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: MX/a/2007/009717 Country of ref document: MX |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2957/KOLNP/2007 Country of ref document: IN |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2597934 Country of ref document: CA |
|
WWE | Wipo information: entry into national phase |
Ref document number: 200680005103.0 Country of ref document: CN |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1020077020279 Country of ref document: KR |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2007134373 Country of ref document: RU |
|
WWP | Wipo information: published in national office |
Ref document number: 2006708170 Country of ref document: EP |
|
ENP | Entry into the national phase |
Ref document number: PI0607872 Country of ref document: BR Kind code of ref document: A2 |