EP2564401B1 - Transformator - Google Patents

Transformator Download PDF

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Publication number
EP2564401B1
EP2564401B1 EP11706603.5A EP11706603A EP2564401B1 EP 2564401 B1 EP2564401 B1 EP 2564401B1 EP 11706603 A EP11706603 A EP 11706603A EP 2564401 B1 EP2564401 B1 EP 2564401B1
Authority
EP
European Patent Office
Prior art keywords
core
voltage coil
low
coil
transformer
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.)
Active
Application number
EP11706603.5A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2564401A1 (de
Inventor
Karl-Heinz Charwat
Rudolf Hanov
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 AG
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
Priority to PL11706603T priority Critical patent/PL2564401T3/pl
Publication of EP2564401A1 publication Critical patent/EP2564401A1/de
Application granted granted Critical
Publication of EP2564401B1 publication Critical patent/EP2564401B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
    • H01F27/306—Fastening or mounting coils or windings on core, casing or other support
    • 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

Definitions

  • the invention relates to a transformer having the features according to the preamble of patent claim 1.
  • Such a transformer is sold by Siemens AG under the product name GEAFOL and is described in detail in the product brochure with the order number E50001-G640-A144.
  • This prior art transformer has a transformer core made of transformer core, three high voltage coils and three low voltage coils.
  • the transformer core comprises three core legs, each of which passes through a low voltage coil and a high voltage coil.
  • the undervoltage coil is arranged within the associated high-voltage coil and oriented concentrically to this.
  • the undervoltage coils and the high voltage coils are supported by blocks supported by carrier profiles.
  • the JP 58 157116 A shows a transformer in which an isolation cylinder is attached by means of fasteners on the core. Upper and lower voltage coils are attached to the insulating cylinder with an adhesive.
  • JP 58 070512 A discloses a transformer in which upper and lower voltage coil are molded together with a resin to a coil. During casting, metal plates are also cast in, by means of which the coil can be fastened to fastening elements of the core.
  • the US Pat. No. 6,326,877 B1 shows a transformer, in the upper and lower voltage coil between the upper and lower yoke press bar be trapped. Support blocks serve as spacers.
  • the US 4,568,903 shows an ignition coil which is arranged around the middle leg of a core with three legs.
  • the ignition coil has a nose attached to its outside and the core on the inside of an outer core leg has a corresponding recess, so that a bolt inserted into the recess pinches the nose and thus holds the ignition coil and core together.
  • the invention has for its object to provide a transformer in which the undervoltage coil is held independently of the high voltage coil and does not have to be aligned relative to this.
  • the invention provides that the undervoltage coil is held by the core leg with at least one fixing bolt, wherein that on a first side surface of the core leg at least one Bolzenhalteausnaturalung is present, in which a first bolt end of the fixing bolt is inserted, the lower voltage coil has at least one EinhticianausEnglishung and the second bolt end of the fixing bolt is inserted into the EinhssenausNFung the low voltage coil and the fixing bolt holds the undervoltage coil.
  • a significant advantage of the transformer according to the invention is that the undervoltage coil according to the invention is held directly by the core leg. This makes it unnecessary to hold the undervoltage coil by means of blocks on support profiles or the like. Also eliminates the adjustment of the lower voltage coil relative to the high voltage coil.
  • the fixing bolt extends perpendicularly, at least approximately perpendicular, to the longitudinal axis of the undervoltage coil and perpendicularly, at least approximately perpendicularly, to the longitudinal axis of the core limb.
  • the core limb has at least two tie-rod sheets and at least one core bolt passed through the core lamination stack of the core limb, wherein a first tie-sheet lamination at a first side surface of the core lamination stack and a second tie lamination sheet at the opposite second side surface of the core lamination at least a core bolt are connected to each other and compress the transformer core plates of the core stack, and the at least one bolt holding recess is arranged in the first tie plate.
  • the at least one Bolzenhalteauslangung may be formed in the first tie plate, for example, by a through hole.
  • the undervoltage coil has an electrical connection plate which forms an electrical coil connection of the undervoltage coil, the electrical connection plate forms at least a section of the inner surface of the undervoltage coil and the at least one insertion recess is arranged in the electrical connection plate.
  • the at least one Einhticianausströmung can be formed for example by a through hole.
  • At least one spacer element is preferably arranged, which ensures a predetermined minimum distance between the low voltage coil and the first tie plate.
  • the spacer element can be pushed onto the fixing bolt or connected in one piece with this.
  • At least one at least partially wedge-shaped wedge element is arranged between the second side surface of the core limb and the undervoltage coil opposite the first side surface of the core limb, pushing the undervoltage coil away from the second side surface of the core limb so that the undervoltage coil draws toward the first side surface.
  • the invention also relates to a method for manufacturing a transformer in which a low-voltage coil is placed on a core leg of a transformer core, while the core leg is passed through the undervoltage coil.
  • at least one fixing bolt is inserted or taken in a Bolzenhalteaus strictlyung of the core leg, the lower voltage coil is placed on the core leg, and first off-center to allow passing the undervoltage coil on the laterally projecting fixing bolt, and - as soon as in the Lower tension coil provided Einh brieflyaus principlesung has reached the height of the fixing bolt - the lower voltage coil laterally offset or laterally displaced and is pushed with the Einhticianausström supraung on the protruding fixing bolts.
  • an at least partially wedge-shaped wedge element is introduced between the second side of the core limb opposite the first side of the core limb and the low-voltage coil, and the lower-voltage coil from the second side of the core limb pushed away and thus attracted to the first side of the core leg.
  • FIGS. 1 and 2 The structure of a transformer according to the prior art is exemplary in the FIGS. 1 and 2 shown in more detail.
  • the core leg 10 is passed through an undervoltage coil 30 and a high-voltage coil 40. It can be seen that the two coils 30 and 40 are aligned concentrically with each other, wherein the lower voltage coil 30 is disposed within the high voltage coil 40.
  • the FIG. 1 also shows two carrier profiles 50 and 60, on which the low voltage coil 30 and the high voltage coil 40 rest.
  • To adjust the low voltage coil 30 and the high voltage coil 40 blocks are provided, of which in the FIG. 1 three are shown by way of example and designated by the reference numeral 70.
  • the function of the blocks 70 is also to adjust the low voltage coil 30 relative to the high voltage coil 40 and relative to the core leg 10.
  • FIG. 2 shows by way of example the configuration of the blocks 70 according to FIG. 1 in cross section. It can be seen a coil portion 30a of the lower voltage coil and a coil portion 40a of the high-voltage coil, which are separated by an adjusting pin 80 of the pad 70 and thus adjusted to each other.
  • FIGS. 3 to 6 An exemplary embodiment of a transformer according to the invention and an exemplary embodiment of the method according to the invention will now be explained by way of example.
  • the FIGS. 3 to 6 show by way of example the arrangement of an undervoltage coil of the transformer relative to the associated core leg of the transformer core.
  • FIG. 4 is the arrangement of the undervoltage coil 100 relative to the core leg in cross section along the section line II 'according to FIG. 3 shown.
  • the core limb 120 has a core lamination stack 130 that consists of a large number in the FIG. 4 vertically extending transformer core plates is formed.
  • the transformer core sheets are in the FIG. 4 not shown explicitly for reasons of clarity, the lamination stack 130 is only indicated as a whole by a hatching.
  • the transformer core laminations of the core lamination stack 130 are pressed together, for example, by two tie plates and two or more (eg, three) core bolts; Additionally or alternatively, core bandages can be used for compression.
  • a first Buchankerblech 140 at a first (in the FIG. 4 right) side surface 150 of the core lamination stack 130;
  • a second tie plate 160 is located at the opposite second (in the FIG. 4 left side) 165 of the core lamination stack 130.
  • the two Ceiankerbcheche 140 and 160 are interconnected by the three core pins, which in the FIG. 4 are denoted by the reference numerals 170, 171 and 172.
  • the three core bolts 170, 171 and 172 are - at least approximately - aligned perpendicular to the longitudinal direction of the core limb 120.
  • the undervoltage coil 100 is aligned concentrically with the core limb 120 and is fastened to the core limb 120 by means of two fixing bolts 200 and 210.
  • the two fixing bolts 200 and 210 extend perpendicularly, at least approximately vertically, to the longitudinal axis of the undervoltage coil 100 and thus perpendicularly, at least approximately perpendicular, to the longitudinal axis of the core limb 120.
  • FIGS. 5 and 6 The attachment of the undervoltage coil 100 to the core leg 120 by means of the two fixing bolts 200 and 210 is in the FIGS. 5 and 6 shown in more detail in detail; while showing the FIG. 5 the in the FIG. 4 marked with the reference B Detail and the FIG. 6 the in the FIG. 4 with the reference C more detail marked.
  • first tie-sheet 140 and thus the core leg 120 have two pin-holding recesses 220 and 230.
  • the Bolzenhalteausnatural aus 220 and 230 are formed by through holes that pass through the first Switzerlandankerblech 140 completely, so that the first bolt end 240 of the two fixing bolts 200 and 210 can rest directly on the outermost transformer core plate of the core stack on the first side surface.
  • the second bolt end 250 of the two fixing bolts 200 and 210 is suspended in two Einhticianaus Principle 260 and 270 in the lower voltage coil 100.
  • the undervoltage coil 100 is equipped with an electrical connection plate 280, which forms an electrical coil terminal of the undervoltage coil 100.
  • this electrical connection plate 280 two through-holes are present, which form the Einhticianaus Principle Prof 260 and 270 in the lower voltage coil 100.
  • the electrical connection plate 280 thus illustratively forms the inside 290 of the undervoltage coil 100, which concentrically surrounds the outer surface of the core lamination packet 130.
  • a spacer device in the form of two spacer elements 300 and 310 is provided between the first tie-rod lamination 140 and the electrical connection lamination 280.
  • the two spacer elements 300 and 310 may be formed for example by spacer plates or spacers, preferably from a electrically non-conductive material.
  • the spacers 300 and 310 may for example be made of plastic, in particular glass fiber reinforced plastic. The two spacers 300 and 310 cause a minimum distance between the first tie plate 140 and in the FIGS. 5 and 6 right side surface of the core leg 120 and the electrical connection plate 280 of the undervoltage coil 100th
  • the two fixing bolts 200 and 210 can each be integrally connected to their associated spacer element 300 or 310.
  • the fixing bolt 200 and the spacer element 300 form a common component and, correspondingly, the fixing bolt 210 and the spacer element 310 form another common component.
  • the fixing bolts and the associated spacer elements preferably consist of the same plastic, in particular of the same glass fiber reinforced plastic. If the fixing bolts and the associated spacer elements are each in one piece, advantageously only one single assembly step is necessary per fixing bolt and spacer element adjustment.
  • the two spacer elements 300 and 310 and the two fixing bolts 200 and 210 are also possible to produce the two spacer elements 300 and 310 and the two fixing bolts 200 and 210 as separate components.
  • the undervoltage coil 100 can be plugged with the EinhCodeaus fundamentalisme 260 and 270 on the second bolt end 250 of the two fixing bolts 200 and 210, whereby the undervoltage coil 100 is fixed on or on the core plate package 130 by hanging.
  • the undervoltage coil 100 is preferably in the direction of the second side surface 165 of the core lamination stack 130 (see FIG. FIG. 4 ) drawn.
  • wedge elements can be used, as in the FIGS. 3 and 4 are denoted by the reference numerals 400 and 410.
  • the function of the wedge elements 400 and 410 is the undervoltage coil 100 after being hooked into the two fixing bolts 200 and 210 (see FIG. FIG. 4 ) to the left or towards the second side surface 165 of the core lamination stack 130, so as to avoid unhooking.
  • the fixing bolts 200 and 210 are hammered into the Bolzenhalteaus strictly adopted 220 and 230 of the core limb 120. If the spacers 300 and 310 are not integrally connected to the fixing bolts 200 and 210, they are subsequently pushed onto the fixing bolts 200 and 210.
  • the undervoltage coil 100 is placed on the associated core limb 120 and thus in the high-voltage coil of the transformer not shown in the figures. This takes place initially off-center, in order to allow passing of the undervoltage coil 100 on the laterally projecting fixing bolts 200 and 210.
  • the lower voltage coil 100 is shifted in the drawings to the left or shifted so that the Undervoltage coil 100 is pushed with the Einhticianaus fundamentalept 260 and 270 on the protruding fixing bolts 200 and 210 and thus fixed on the core leg 120.
  • the undervoltage coil 100 is thus held by the two fixing bolts 200 and 210 and the core limb 120.
  • the two wedge members 400 and 410 could result in an off center arrangement of the undervoltage coil 100, unless the spacers 300 and 310 are provided between the undervoltage coil 100 and the core leg 120.
  • the function of the spacer elements 300 and 310 is thus in the case of a displacement of the lower voltage coil 100 to the left, which by the wedge elements 400 and 410 is to ensure a centric alignment of the undervoltage coil 100 on the core leg 120.
  • the wedge elements 400 and 410 are preferably made of plastic, for example glass fiber reinforced plastic; they may be, for example, rod, strip or plate-shaped.
  • plastic for example glass fiber reinforced plastic
  • at least the front end face of the wedge elements, with which they are introduced into the gap or gap, is preferably wedge-shaped.
  • the wedge elements can also be multi-part, also a plurality of wedge elements can be mounted.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Coils Of Transformers For General Uses (AREA)
  • Insulating Of Coils (AREA)
EP11706603.5A 2010-04-22 2011-03-04 Transformator Active EP2564401B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL11706603T PL2564401T3 (pl) 2010-04-22 2011-03-04 Transformator

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010018059A DE102010018059A1 (de) 2010-04-22 2010-04-22 Transformator
PCT/EP2011/053255 WO2011131408A1 (de) 2010-04-22 2011-03-04 Transformator

Publications (2)

Publication Number Publication Date
EP2564401A1 EP2564401A1 (de) 2013-03-06
EP2564401B1 true EP2564401B1 (de) 2018-10-24

Family

ID=44124567

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11706603.5A Active EP2564401B1 (de) 2010-04-22 2011-03-04 Transformator

Country Status (5)

Country Link
EP (1) EP2564401B1 (pl)
DE (1) DE102010018059A1 (pl)
DK (1) DK2564401T3 (pl)
PL (1) PL2564401T3 (pl)
WO (1) WO2011131408A1 (pl)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016215646A1 (de) * 2016-08-19 2018-02-22 Siemens Aktiengesellschaft Mehrstocktransformator für ein Verteilnetz oder den Betrieb mit einem Umrichter
CN114743776A (zh) * 2022-05-13 2022-07-12 浙江临高电气实业有限公司 一种干式变压器

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5870512A (ja) * 1981-10-23 1983-04-27 Toshiba Corp コイルの固定機構
JPS58157116A (ja) * 1982-03-15 1983-09-19 Toshiba Corp 乾式変圧器
US4568903A (en) * 1985-01-14 1986-02-04 R. E. Phelon Company, Inc. Mounting for ignition module
US6326877B1 (en) * 1999-06-16 2001-12-04 Square D Company Transformer coil support structure
DE102008055882A1 (de) * 2008-11-03 2010-05-06 Siemens Aktiengesellschaft Haltevorrichtung für eine Gießharztransformatoren-Wicklung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
EP2564401A1 (de) 2013-03-06
PL2564401T3 (pl) 2019-04-30
DK2564401T3 (en) 2019-01-14
DE102010018059A1 (de) 2011-10-27
WO2011131408A1 (de) 2011-10-27

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