EP1864304A2 - Transformator mit elektrischer abschirmung - Google Patents
Transformator mit elektrischer abschirmungInfo
- Publication number
- EP1864304A2 EP1864304A2 EP06725253A EP06725253A EP1864304A2 EP 1864304 A2 EP1864304 A2 EP 1864304A2 EP 06725253 A EP06725253 A EP 06725253A EP 06725253 A EP06725253 A EP 06725253A EP 1864304 A2 EP1864304 A2 EP 1864304A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- transformer
- voltage
- electrical
- voltage winding
- winding
- 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
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
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/327—Encapsulating or impregnating
-
- 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
- H01F27/2866—Combination of wires and sheets
-
- 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
- H01F27/288—Shielding
- H01F27/2885—Shielding with shields or electrodes
-
- 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
- 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
- H01F27/363—Electric or magnetic shields or screens made of electrically conductive material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/327—Encapsulating or impregnating
- H01F2027/328—Dry-type transformer with encapsulated foil winding, e.g. windings coaxially arranged on core legs with spacers for cooling and with three phases
Definitions
- the invention relates to a transformer, in particular
- Cast resin transformer with at least one undervoltage winding ⁇ and at least one high-voltage winding.
- DE 41 23 812 A1 describes a transformer having at least one primary and at least one low-voltage winding, wherein between the primary and the low-voltage winding, a shield is arranged, which is connected via an ohmic resistance to the ground of the transformer. This also leads to the reduction of unwanted leakage inductances and / or stray impedances in the transformer windings.
- a disadvantage of all previous transformers, in particular casting resin transformers, of the prior art is the need for a complex protective housing or an external protection around the transformer in an open-air installation.
- a protective housing is also necessary when installing the transformer in climatically unfavorable or heavily polluted environments.
- this protective housing is also necessary to prevent the person from touching the transformer.
- To avoid a voltage flashover of Ab ⁇ is standing between the outer protective casing and the outer side of the transformer according to the prior art suffi ⁇ accordingly large to choose. Due to this disadvantage, larger footprints than necessary for the operation of a transformer should be provided.
- Object of the present invention is therefore to provide an easy to manufacture, compact transformer that is finger-safe.
- an electrical shield is arranged around the high-voltage winding.
- the high-voltage winding is in particular a medium or high voltage winding ⁇ . This allows the voltage potential is advantageously between the coil surface and the - leading eventually high voltage - Upper voltage ⁇ development set to zero and thus a voltage breakdown, even in the event of contact prevents a person.
- the electrical shield encloses the High-voltage winding up to the electrical supply and discharge almost completely.
- the electrical shield is connected to the electrical ground and thus grounded.
- grounding the electrical shield is a danger to a person who touches the electrical shield, minimized or verhin ⁇ changed.
- the electrical shielding surrounds the cylindrical high-voltage winding coaxially, wherein the electrical shield is interrupted in the radial direction and the thus formed space the ends of the ⁇ elekt step shield in the radial direction, insulated from each other. The ends of the shield must thereby overlap. Due to this advantageous embodiment of the electrical shield, short-circuit currents within the electrical shield are prevented. In addition, insulation in the space may prevent electrical connection of the electrical shield ends thus created.
- the ends of the electrical shield overlap, ten to complete shielding to be granted slightest ⁇ . In the overlapping area, an insulation to avoid short-circuit currents, ideally a thin Iso ⁇ lierfolie be introduced.
- the electrical shield is an electrically conductive mate ⁇ rial, such as a wire mesh, and thus represents a Fabay's cage.
- the transformer is designed so that the distance between the space between the electrical shield and the high-voltage winding is selected such that, depending on the dielectric located in the space between the electrical shield and the primary winding, a protection against a voltage is given.
- the distance of the shield to the high-voltage winding should be selected so that a voltage breakdown on the casting resin located in the gap is excluded. In an analogous manner, this distance is to be selected for other insulation materials.
- the electrical shielding has to be protected against external contact influences. This can be ensured in the simplest case by an outer plate. Also, by casting a transformer with casting resin - a so-called "casting" - given the possibility that the
- Casting surrounds the electrical shield and Ab ⁇ a stand between the outer wall of the casting and the electrical ⁇ shielding remains. Due to the common potting of the high voltage winding and the electrical shield partial discharges are significantly reduced, since the gap high-voltage winding / shield is not filled with air. Simultaneously, the joint casting increases the dimensional stability of the electrical shield ⁇ and ei ensured ⁇ NEN constant distance between the Oberschreibswick- lung and electrical shielding.
- the high-voltage winding with the electrical shield, and the lower voltage winding is cast together with casting resin.
- the transformer has in an advantageous embodiment, at least one guide for the located in the interior of the transformer electrical connections of the high-voltage winding and / or the low-voltage winding, the guide being connected to an attached arrange on the outer wall of the transformer ⁇ th implementation. Due to this all-round electrical shielding and grounding of the outer transformer shell, a complete electrical shielding and thus a contact safety for people is given.
- the possibility given for cast-resin transformers of erecting the transformer in dirt-prone or climatically unfavorable environments is also given for the transformer according to the invention.
- the bushing and / or the fastening flange are connected to the electrical shield and thus to the ground.
- the transformer consists of at least two castings, wherein in each casting a high voltage winding with shield, a lower voltage winding are shed together.
- the castings so produced are arranged around a common core, the upper voltage ⁇ windings and / or the respective electrical shielding and / or the low-voltage windings by Ste- sugar / connectors and high voltage cables are each connected to one another. Through the use of connectors, a fast connection of the windings is given.
- the so-designed transformer is cooled by an air and / or water cooling in the space between the high-voltage winding and the low-voltage winding.
- fans are arranged in a suitable manner.
- the fan prevents heat accumulation within the cooling channels and thus damage to the Trans ⁇ formator.
- the use of an external heat exchange device is possible.
- Ausgestal ⁇ tung lends itself especially in the preparation of ships.
- Fig. 1 is a partly cutaway perspective view of the transformer according to the invention with two ⁇ he inventively shielded Obertheses- and low-voltage windings, •
- Fig. 2 is a sectional view taken along the line I-I in Fig. 1;
- FIG 3 is a perspective partial sectional view of the transformer according to the invention with an inventively shielded Oberschreibs- and a low-voltage winding.
- FIG. 1 shows a perspective, partially sectional drawing voltage of the transformer 1 according to the invention with two elekt ⁇ driven connected high-voltage windings 3a, 3b and two low-voltage windings 2a, 2b, wherein the high-voltage windings 3a, 3b, the low-voltage windings 2a 2b enclose coaxially.
- the undervoltage windings 2 a, 2 b each have electrical connections 9, wherein a guide 8 controls the connection of the electrical connections 9 outside the transformer.
- mators 1 by means of a passage 10 allowed.
- To the upper ⁇ voltage winding 3a, 3b, an electrical shield 4a, 4b is arranged, which is connected to the electrical ground 11.
- the electrical shield 4a, 4b encloses in the axial direction, the high-voltage windings 3a, 3b each almost completely.
- no implementation 10 is shown for reasons of clarity.
- FIG. 2 is a sectional view through the perspective view of FIG. 1 along the line II.
- the low-voltage windings 2a, 2b are electrical terminals 9, connected inside the guide 8 to the located on the outer wall of the transformer 1 bushing 10, as prepared for example by the company Elastimold ®.
- the bushing 10 is arranged on the outer wall of the transformer 1, this being the electrical shield 4a, 4b in the present example.
- the fastening flange 10 is electrically connected to the electrical shielding 4a, 4b and is electrically grounded by the electrical connection with the ground 11.
- the distance 5 Zvi ⁇ rule the low-voltage windings 2a, 2b and the high-voltage windings 3a, 3b is used as a cooling channel.
- the Figure Fig. 3 shows a perspective, partially sectional drawing voltage of the transformer 1 according to the invention with a elekt ⁇ driven shielded high-voltage winding 3a and a low-voltage winding 2, wherein the high-voltage winding 3a, the lower voltage winding 2a coaxially surrounds.
- the electrical shield 4a in the form of a wire mesh is indicated only as ge ⁇ dashed line.
- the high-voltage winding 3a is almost completely enclosed by the electrical shield 4a and cast together with casting resin.
- the undervoltage winding 2b - also indicated only schematically - is also cast with the electrically shielded high-voltage winding 2a. This allows a very compact design of the transformer according to the invention.
- Cooling channels are formed in the casting between the shielded high-voltage winding 2a and the low-voltage winding 2b, these intermediate spaces being formed by suitable rod-shaped elements during the casting process.
- the arrangement, shape and size of the gaps 5 is He tinctisse ⁇ to the respective, such as adjust the cooling medium of the expected heat load or the heat capacity.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Regulation Of General Use Transformers (AREA)
- Insulated Conductors (AREA)
- Removal Of Insulation Or Armoring From Wires Or Cables (AREA)
- Coils Or Transformers For Communication (AREA)
- Insulating Of Coils (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005015785A DE102005015785A1 (de) | 2005-04-01 | 2005-04-01 | Transformator mit elektrischer Abschirmung |
PCT/EP2006/060974 WO2006103193A2 (de) | 2005-04-01 | 2006-03-23 | Transformator mit elektrischer abschirmung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1864304A2 true EP1864304A2 (de) | 2007-12-12 |
EP1864304B1 EP1864304B1 (de) | 2015-05-20 |
Family
ID=37053740
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06725253.6A Active EP1864304B1 (de) | 2005-04-01 | 2006-03-23 | Transformator mit elektrischer abschirmung |
Country Status (7)
Country | Link |
---|---|
US (1) | US8085121B2 (de) |
EP (1) | EP1864304B1 (de) |
CN (1) | CN101151689B (de) |
BR (1) | BRPI0609599B8 (de) |
DE (1) | DE102005015785A1 (de) |
NO (1) | NO338301B1 (de) |
WO (1) | WO2006103193A2 (de) |
Families Citing this family (34)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2075806A1 (de) * | 2007-12-27 | 2009-07-01 | Elettromeccanica di Marnate S.p.A. | Trockenharzisolierter Transformator mit abgeschirmten nebeneinander liegenden Primärwindungen |
ITVI20080124A1 (it) * | 2008-05-28 | 2009-11-29 | S E A Societa Elettromeccanica | Trasformatore a schermatura ottimizzata, in particolare per l'esecuzione di prove dielettriche. |
GB2463935B (en) | 2008-10-01 | 2013-06-19 | 3Di Power Ltd | Inductor for high frequency applications |
EP2369602B1 (de) * | 2010-03-23 | 2013-05-29 | ABB Technology AG | Anordnung mit mindestens zwei auf einem gemeinsamen Kernschenkel axial übereinander angeordneten Spulen |
WO2011126991A1 (en) * | 2010-04-07 | 2011-10-13 | Abb Technology Ag | Outdoor dry-type transformer |
WO2012000985A1 (en) * | 2010-06-28 | 2012-01-05 | Abb Research Ltd | Transformer with field control layer arrangement |
WO2012000983A1 (en) * | 2010-06-28 | 2012-01-05 | Abb Technology Ag | Transformer with shielding rings in windings |
CN102959651B (zh) * | 2010-06-28 | 2016-06-01 | Abb技术有限公司 | 具有屏蔽钳的变压器 |
EP2426680A1 (de) * | 2010-09-01 | 2012-03-07 | ABB Technology AG | Gekühlter Transformator mit mindestens einer Bandwicklung |
EP2428967B1 (de) * | 2010-09-08 | 2013-04-17 | ABB Technology AG | Transformatorwicklung |
EP2487697A1 (de) | 2011-02-08 | 2012-08-15 | ABB Technology AG | Trockentransformator und Verfahren zur Herstellung eines Trockentransformators |
CN102208260A (zh) * | 2011-03-14 | 2011-10-05 | 镇江康士伯船舶电气有限公司 | 噪声抑制变压器 |
EP2645384B1 (de) * | 2012-03-27 | 2018-11-14 | Siemens Aktiengesellschaft | Transformator und Verfahren zur Herstellung eines Transformators |
CN104425112B (zh) * | 2013-09-04 | 2017-01-18 | 台达电子企业管理(上海)有限公司 | 变压器 |
US20150109090A1 (en) * | 2013-10-21 | 2015-04-23 | Hammond Power Solutions, Inc. | Electrical transformer with a shielded cast coil assembly |
EP2869313B1 (de) * | 2013-10-29 | 2017-05-31 | ABB Schweiz AG | Trockentransformatorspule und Trockentransformator |
CN103745812B (zh) * | 2013-12-31 | 2016-09-28 | 卧龙电气集团股份有限公司 | 一种带有横纵气道的树脂绝缘干式牵引整流变压器 |
EP3035348B1 (de) * | 2014-12-17 | 2017-08-09 | ABB Schweiz AG | Abschirmung für eine induktive Vorrichtung mit zentraler Erstwickelverbindung |
CN206460860U (zh) * | 2017-01-25 | 2017-09-01 | 台达电子企业管理(上海)有限公司 | 高压变压器及电子电力装置 |
US11250990B2 (en) * | 2017-01-25 | 2022-02-15 | Delta Electronics (Shanghai) Co., Ltd | High-voltage transformer and electronic power apparatus |
US11515080B2 (en) * | 2017-01-25 | 2022-11-29 | Delta Electronics (Shanghai) Co., Ltd | Transformer, coil unit and electronic power apparatus |
US11417456B2 (en) * | 2017-01-25 | 2022-08-16 | Delta Electronics (Shanghai) Co., Ltd | High-voltage transformer and electronic power apparatus |
WO2018201484A1 (zh) | 2017-05-05 | 2018-11-08 | 华为技术有限公司 | 一种变压器及开关电源 |
ES2837975T3 (es) | 2018-02-15 | 2021-07-01 | Abb Power Grids Switzerland Ag | Aislamiento de transformadores no sumergidos en líquido |
WO2019174847A1 (de) | 2018-03-13 | 2019-09-19 | Siemens Aktiengesellschaft | Elektrische maschine |
CA3102648C (en) | 2018-06-07 | 2023-10-31 | Siemens Aktiengesellschaft | Shielded coil assemblies and methods for dry-type transformers |
CN108847331B (zh) * | 2018-07-02 | 2024-01-19 | 河南森源电气股份有限公司 | 一种变压器及线圈组件 |
US10826297B2 (en) * | 2018-11-06 | 2020-11-03 | General Electric Company | System and method for wind power generation and transmission in electrical power systems |
CN109509621A (zh) * | 2018-12-11 | 2019-03-22 | 保定天威集团特变电气有限公司 | 一种35kv级融冰变压器器身 |
CN111653424B (zh) * | 2020-07-06 | 2021-05-14 | 华北电力大学 | 一种三绕组高频降压变压器的绕组间距离确定方法及系统 |
KR102170548B1 (ko) * | 2020-07-09 | 2020-10-27 | 산일전기 주식회사 | 몰드 변압기 |
US20220037080A1 (en) * | 2020-07-29 | 2022-02-03 | Cree Fayetteville, Inc. | Shielding arrangements for transformer structures |
EP3979273B1 (de) * | 2020-09-30 | 2024-03-20 | Hitachi Energy Ltd | Geteilte wicklungsanordnung für einen transformator |
CN113470955A (zh) * | 2021-06-25 | 2021-10-01 | 特变电(沈阳)电工新材料有限公司 | 一种用于电力变压器屏蔽功能的导电带生产工艺及应用 |
Family Cites Families (18)
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DD10549A (de) | ||||
DE2110276C3 (de) * | 1971-03-04 | 1974-02-14 | Siemens Ag, 1000 Berlin U. 8000 Muenchen | Impulsübertrager zur Ansteuerung eines Thyristors |
US2731589A (en) * | 1954-09-13 | 1956-01-17 | Ransburg Electro Coating Corp | High voltage apparatus |
DE1763515U (de) * | 1958-01-22 | 1958-03-20 | Picard Geb | Griff fuer damenhandtaschen. |
US3201728A (en) * | 1962-08-23 | 1965-08-17 | Westinghouse Electric Corp | Evaporative cooled inductive apparatus having cast solid insulation with cooling ducts formed therein |
US3265998A (en) * | 1964-04-14 | 1966-08-09 | Charles W Park | Compact high voltage transformer having more uniform equipotential line spacing |
DE1258966B (de) * | 1964-04-27 | 1968-01-18 | May & Christe Ges Mit Beschrae | Luftgekuehlter Kunststofftransformator |
DE1763515A1 (de) * | 1965-04-20 | 1971-12-30 | May & Christe Gmbh | Potentialsteuernder Schirm fuer Kunststofftransformatoren |
DE1921610U (de) * | 1965-05-08 | 1965-08-19 | Koch Und Sterzel Wandler Und T | Einlage fuer einen giessharz-isolierten transformator, insbesondere einem spannungswandler. |
US3536963A (en) | 1968-05-29 | 1970-10-27 | Standard Oil Co | Electrolytic capacitor having carbon paste electrodes |
US4176334A (en) * | 1975-08-25 | 1979-11-27 | Hughes Aircraft Company | High voltage transformer and process for making same |
DE3100419C2 (de) * | 1981-01-09 | 1986-07-17 | ANT Nachrichtentechnik GmbH, 7150 Backnang | Übertrager hoher Leistungsdichte |
DE3113139A1 (de) * | 1981-04-01 | 1982-10-21 | Smit Transformatoren B.V., 6500 Nijmegen | "trockentransformator oder drosselspule mit luftkuehlung" |
DE3229480A1 (de) * | 1982-08-06 | 1984-02-09 | Transformatoren Union Ag, 7000 Stuttgart | Trockentransformator mit in giessharz eingegossenen wicklungen |
DE8914262U1 (de) * | 1989-12-04 | 1990-03-01 | Michael Riedel Transformatorenbau GmbH, 7174 Ilshofen | Transformator mit Abschirmwicklungen zwischen verschiedenen Wicklungen |
DE4123812C2 (de) * | 1991-07-18 | 1993-10-28 | Bosch Gmbh Robert | Transformator |
DE19809572C2 (de) * | 1998-03-05 | 2000-06-21 | Siemens Ag | Gießharz-Transformator |
US7023312B1 (en) | 2001-12-21 | 2006-04-04 | Abb Technology Ag | Integrated cooling duct for resin-encapsulated distribution transformer coils |
-
2005
- 2005-04-01 DE DE102005015785A patent/DE102005015785A1/de not_active Ceased
-
2006
- 2006-03-23 EP EP06725253.6A patent/EP1864304B1/de active Active
- 2006-03-23 BR BRPI0609599A patent/BRPI0609599B8/pt active IP Right Grant
- 2006-03-23 WO PCT/EP2006/060974 patent/WO2006103193A2/de not_active Application Discontinuation
- 2006-03-23 US US11/910,280 patent/US8085121B2/en not_active Expired - Fee Related
- 2006-03-23 CN CN2006800103181A patent/CN101151689B/zh active Active
-
2007
- 2007-10-25 NO NO20075430A patent/NO338301B1/no unknown
Non-Patent Citations (1)
Title |
---|
See references of WO2006103193A2 * |
Also Published As
Publication number | Publication date |
---|---|
BRPI0609599B1 (pt) | 2018-05-08 |
US20080211611A1 (en) | 2008-09-04 |
EP1864304B1 (de) | 2015-05-20 |
US8085121B2 (en) | 2011-12-27 |
NO338301B1 (no) | 2016-08-08 |
WO2006103193A3 (de) | 2007-02-22 |
CN101151689B (zh) | 2012-09-05 |
DE102005015785A1 (de) | 2006-11-16 |
NO20075430L (no) | 2007-10-25 |
BRPI0609599B8 (pt) | 2023-04-25 |
WO2006103193A2 (de) | 2006-10-05 |
CN101151689A (zh) | 2008-03-26 |
BRPI0609599A2 (pt) | 2010-04-20 |
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