EP2395520A1 - Anneau à noyau d'un transformateur ou d'une self développé sous forme de noyau d'enroulement de bande - Google Patents

Anneau à noyau d'un transformateur ou d'une self développé sous forme de noyau d'enroulement de bande Download PDF

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Publication number
EP2395520A1
EP2395520A1 EP10005875A EP10005875A EP2395520A1 EP 2395520 A1 EP2395520 A1 EP 2395520A1 EP 10005875 A EP10005875 A EP 10005875A EP 10005875 A EP10005875 A EP 10005875A EP 2395520 A1 EP2395520 A1 EP 2395520A1
Authority
EP
European Patent Office
Prior art keywords
core ring
core
band
cut
ring
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Withdrawn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
EP10005875A
Other languages
German (de)
English (en)
Inventor
Benjamin Weber
Jasmin Smajic
Martin Dr. rer. nat. Carlen
Lise Dr. Donzel
Stephane Dr. Schaal
Thorsten Steinmetz
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.)
ABB Technology AG
Original Assignee
ABB Technology AG
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 ABB Technology AG filed Critical ABB Technology AG
Priority to EP10005875A priority Critical patent/EP2395520A1/fr
Priority to PCT/EP2011/058129 priority patent/WO2011154235A1/fr
Publication of EP2395520A1 publication Critical patent/EP2395520A1/fr
Withdrawn legal-status Critical Current

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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
    • H01F27/24—Magnetic cores
    • H01F27/25—Magnetic cores made from strips or ribbons
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/0206—Manufacturing of magnetic cores by mechanical means
    • H01F41/0213—Manufacturing of magnetic circuits made from strip(s) or ribbon(s)
    • H01F41/0226—Manufacturing of magnetic circuits made from strip(s) or ribbon(s) from amorphous ribbons

Definitions

  • the invention relates to a core ring of a transformer or a choke, which is formed as a winding tape core of a band.
  • amorphous core material or grain oriented or non-grain oriented core sheet is usable.
  • core rings and coils are manufactured and assembled separately. This requires that the core ring can be opened to defer the coils.
  • the manufacturing process is thus relatively complicated and expensive.
  • the core ring is closed twice in the transformer production.
  • the invention has for its object to provide an optimized core ring of a transformer or a throttle, which (r) is designed as a winding tape core specify.
  • a core ring of a transformer or a choke which (r) is formed as a winding tape core of a band, between the bottom and top of the core ring over the entire layer height extending section at an angle to the surface of the Bandes between 5 ° and 90 ° is introduced.
  • the advantages which can be achieved with the invention are, in particular, that the manufacturing process for creating an openable core ring is simplified. In addition to the simpler and faster production, a higher quality of the core ring or of the produced therewith transformer / throttle produced therewith is achieved.
  • the tape is immediately wound on a suitable mandrel at the desired layer height and cut in a later manufacturing step. A non-perpendicular cut allows for easier flow transition and reduces losses and magnetizing current. This is particularly important in a core ring formed of an amorphous material.
  • the band can be formed from an amorphous core material or from a grain-oriented or non-grain-oriented core sheet.
  • the cut may be composed of at least two partial sections or be formed step-shaped.
  • the cut can be right-angled or non-perpendicular between the strip edges.
  • Fig. 1 is shown a side view of a core ring of a transformer or a choke. It is a first (left) end face 5 of the core ring 2, respectively to detect first (left) band edges of the band over the entire layer height, with bottom 3 of the core ring and top 4 of the core ring, wherein the core ring 2 by means of a straight cut 6 at a predetermined angle ⁇ 1 relative to the bottom 3rd of the core ring 2 is severed. On the upper side 4 of the core ring, this section 6 can be seen in the form of a straight cutting line 16. The cut 6 is preferably introduced by means of a laser 29.
  • the core ring 2 is preferably wound from an amorphous ribbon.
  • the top 4 the first (left) face 5 of the core ring 2 respectively the first (left) band edge of the band, a second (right) end face 15 of the core ring 2 and second (right) band edge of the band and the the top 4 visible straight line 16 of the section 6 marked.
  • the cut line on the invisible underside of the core ring is outlined in dashed lines.
  • the serving for introducing the cut laser 29 is indicated. In this case, the laser 29 can act both from one side and above the core and from the "window" of the core.
  • Fig. 3 is a side view of an open core ring shown, again with the first (left) end face 5, the bottom 3 and the top 4 of the core ring 2 are marked.
  • the result is a U-shaped structure of the core ring 2 with cut edges 14 at the ends of the open side legs. Now coils can be pushed onto the open side legs.
  • Fig. 4 is shown a side view of an open core ring with deferred coils. On the open side legs of the core ring 2 opposite a first coil 26 and a second coil 27 are pushed. Arrows indicate the direction of application of these two coils 26, 27th
  • Fig. 5 is a side view of a transformer with a closed core ring shown, consisting of the core ring 2 including sketched section 6 and the two coils 26, 27.
  • the invention is also in each core ring of a 3-phase transformer with cores made of four rings or according to "Evans design" suitable.
  • FIG. 6-8 Different views are shown on an end face of a core ring with different sections. In each case, the underside 3 and upper side 4 of the core ring 2, and the first (left) end face 5 of the core ring 2 and the first (left) band edges of the band can be seen over the entire layer height.
  • the section is formed from two partial sections and there is a first partial section 7 from the bottom 3 to about the middle of the total layer height with an angle ⁇ 1 with respect to the bottom 3. At this first partial section 7 is followed by a second partial section 8, which extends with an angle ⁇ 2 relative to the bottom 3 to the top 4.
  • the section is formed from four partial sections and there is a first partial section 9 from the bottom 3 over about 25% of the total layer height with an angle ⁇ 1 with respect to the bottom 3.
  • a first partial section 9 is followed by a second partial section 10, which extends with an angle ⁇ 2 relative to the bottom 3 to the middle of the total layer height.
  • This second partial section 10 is adjoined by a third partial section 11, which extends at an angle ⁇ 1 to about 75% of the total layer height.
  • the third partial section 11 is adjoined by a fourth sectional section 12 extending up to the upper side 4 at an angle ⁇ 2.
  • angles ⁇ 3 ⁇ angle ⁇ 1 or angle ⁇ 4 ⁇ angle ⁇ 2 can be realized.
  • Fig. 8 is a step-shaped section 13 to recognize, with a dotted general direction shown in accordance with an angle ⁇ 1 relative to the bottom 3.
  • Fig. 9 - 13 Different views are shown on top of a core ring with different sections. In each case, the upper side 4 of the core ring 2, the first (left) band edge 5 of the band and the second (right) band edge 15 of the band can be seen.
  • the starting point of the consideration is the in Fig. 2 shown straight section line 16.
  • Deviating from this runs in the embodiment according to Fig. 9 a straight cut 17 at an angle ⁇ 1 with respect to the first (left) band edge 5 of the band over the entire bandwidth from the first (left) band edge 5 to the second (right) band edge 15.
  • the section is formed from two partial sections and there is a first partial section 18 with an angle ⁇ 1 relative to the first (left) band edge 5 approximately to the center of the band. Adjoining this first partial section 18 is a second partial section 19, which extends at an angle ⁇ 2 with respect to the first (left) band edge 5 to the second (right) band edge 15 of the band. While according to Fig. 10 the two partial sections 18, 19 are approximately equal in length, are in the embodiment according to Fig. 11 shown two partial sections of different lengths, namely a shorter partial section 20, followed by a longer partial section 21 connects.
  • the cut can also be designed as an arcuate cut 22. Deviating from the illustrated section, the cut may also be wave-shaped or composed of a plurality of non-linear line parts.
  • the cut can also be formed from three partial sections, namely a first partial section 23, a subsequent second partial section 24 and a subsequent third partial section 25.
  • the angles ⁇ 1, ⁇ 2, ⁇ 3 relate to the first (left) Band edge 5 on.
  • the laser 29 is preferably positioned such that the severed layers of the core ring 2 quasi automatically by gravity causes downward "fall” or a “fanning” takes place, so that an opening of the core ring without additional measures already is effected during cutting.
  • the non-perpendicular cut advantageously allows easier flow transition and reduces losses and magnetizing current. This is important for transformers / chokes with amorphous core rings.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)
EP10005875A 2010-06-08 2010-06-08 Anneau à noyau d'un transformateur ou d'une self développé sous forme de noyau d'enroulement de bande Withdrawn EP2395520A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP10005875A EP2395520A1 (fr) 2010-06-08 2010-06-08 Anneau à noyau d'un transformateur ou d'une self développé sous forme de noyau d'enroulement de bande
PCT/EP2011/058129 WO2011154235A1 (fr) 2010-06-08 2011-05-19 Noyau annulaire d'un transformateur ou d'une bobine qui est réalisé sous forme de noyau à bande d'enroulement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP10005875A EP2395520A1 (fr) 2010-06-08 2010-06-08 Anneau à noyau d'un transformateur ou d'une self développé sous forme de noyau d'enroulement de bande

Publications (1)

Publication Number Publication Date
EP2395520A1 true EP2395520A1 (fr) 2011-12-14

Family

ID=43088187

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10005875A Withdrawn EP2395520A1 (fr) 2010-06-08 2010-06-08 Anneau à noyau d'un transformateur ou d'une self développé sous forme de noyau d'enroulement de bande

Country Status (2)

Country Link
EP (1) EP2395520A1 (fr)
WO (1) WO2011154235A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB752112A (en) * 1953-02-17 1956-07-04 Gen Electric Improvements in and relating to electric induction apparatus
US2942218A (en) * 1952-08-08 1960-06-21 Mc Graw Edison Co Core for electromagnetic induction apparatus
EP0256347A1 (fr) * 1986-08-15 1988-02-24 Asea Brown Boveri Inc. Procédé de fabrication d'un noyau magnétique
US4972168A (en) * 1989-01-03 1990-11-20 Abb Power T & D Company, Inc. Transformers and cores for transformers

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB696346A (en) * 1950-11-03 1953-08-26 Asea Ab Process for manufacturing divided wound magnetic cores for transformers and similar apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2942218A (en) * 1952-08-08 1960-06-21 Mc Graw Edison Co Core for electromagnetic induction apparatus
GB752112A (en) * 1953-02-17 1956-07-04 Gen Electric Improvements in and relating to electric induction apparatus
EP0256347A1 (fr) * 1986-08-15 1988-02-24 Asea Brown Boveri Inc. Procédé de fabrication d'un noyau magnétique
US4972168A (en) * 1989-01-03 1990-11-20 Abb Power T & D Company, Inc. Transformers and cores for transformers

Also Published As

Publication number Publication date
WO2011154235A1 (fr) 2011-12-15

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