WO2018068963A1 - Procédé de fabrication d'un tranformateur de courant à carte de circuit imprimé - Google Patents

Procédé de fabrication d'un tranformateur de courant à carte de circuit imprimé Download PDF

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Publication number
WO2018068963A1
WO2018068963A1 PCT/EP2017/072796 EP2017072796W WO2018068963A1 WO 2018068963 A1 WO2018068963 A1 WO 2018068963A1 EP 2017072796 W EP2017072796 W EP 2017072796W WO 2018068963 A1 WO2018068963 A1 WO 2018068963A1
Authority
WO
WIPO (PCT)
Prior art keywords
circuit board
printed circuit
openings
caps
sheets
Prior art date
Application number
PCT/EP2017/072796
Other languages
German (de)
English (en)
Inventor
Martin Maier
Uwe Weiss
Original Assignee
Siemens Aktiengesellschaft
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 Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Publication of WO2018068963A1 publication Critical patent/WO2018068963A1/fr

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/20—Instruments transformers
    • H01F38/22—Instruments transformers for single phase ac
    • H01F38/28—Current transformers
    • H01F38/30—Constructions
    • 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
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/2804—Printed windings

Definitions

  • the invention relates to a method for producing a printed circuit board current transformer.
  • a secondary circuit of such a current transformer typically comprises a ring winding, also called secondary winding
  • the primary circuit of the current transformer is a wire which is passed through the ring core (iron circle) the design of the current transformer predetermined air and creepage distances, such as between the primary and the secondary side terminal or between the primary-side terminal and the ring winding
  • the ring winding is usually made of enameled wire, which is considered not isolated for legal requirements wire forming the primary circuit, however, is the usual manner sufficiently insulated. There are certain min ⁇ least distances between the bared free ends of the primary circuit wire adhere to the ring winding.
  • converters consisting of mutually layered sheets with a bobbin.
  • the bobbin has the advantage that it can be wound easily and quickly. For the bobbin but you have once again tooling costs. Overall, however, the accuracy and the dynamic range in this converter are worse than the toroidal transformer.
  • this object is achieved by a method for manufacturing a printed circuit board with the current transformer Schrit ⁇ th:
  • the invention includes a printed circuit board, on and in which the secondary windings are designed as a conductor track.
  • the circuit board openings are provided to accommodate an iron circle can.
  • the primary windings can be realized as separate lines or as a conductor track on and in the circuit board layers.
  • the printed circuit board current transformer according to the invention has an iron circuit.
  • This iron circle has a gesta ⁇ pelten structure with U-shaped sheets of a ferromagnetic material such as silicon or nickel iron sensen.
  • the inventive method for producing a printed circuit board current transformer comprises, as a first step, that the PCB is placed vertically. As a result, the individual sheets can not fall out of the opening again.
  • the busbar is brought as a primary current ⁇ circle for the respective phases LI, L2 or L3 perpendicular to the circuit board, so that it comes to rest between the respective ⁇ holes of the PCB coil.
  • the U-shaped sheets can successively reciprocally, ie once from the left and once from the right or vice versa in the appropriate openings of the circuit board are performed. This creates a laminated core for each phase LI, L2 or L3 after a few stack rounds.
  • caps for example made of plastic, of which in each case a cap is plugged onto the laminated core on both sides.
  • the internal dimension of the respective cap is to be dimensioned so that the laminated core defined façadege ⁇ is pressed and still is mountable.
  • the assembly aid is a round 45 ° phase. Since the sheets press in the mounted state due to their tension to the outside, the cap holds without further fixation. For improved grip, additional so-called scraper ribs can be attached to the inner walls of the cap.
  • snap hooks can be additionally attached for improved support, for example in the case of difficult environmental influences such as increased vibration / shock requirements on the two opposite inner walls of the cap, which then latch in the laminated core.
  • one of the two caps on two opposite sides should have openings that surround the busbar.
  • a cap material should be used with the smallest possible coefficient of linear expansion so that the widest possible temperature range can be covered.
  • the U shaped sheets with two opposing legs and connecting the legs transition region are mutually guided ⁇ over the legs in the opening of the circuit board, so that the transition areas of the U-shaped sheets are alternately times right and sometimes left of the printed circuit board ⁇ positioned.
  • the U-shaped metal sheets form two laminated cores in the openings of the printed circuit board, which are fixed in position by two caps.
  • caps are used which have scraper ribs on the inner walls.
  • caps are used which have snap hooks which latch in the sheet metal packet.
  • caps are used which have openings for the positioning of the busbar on opposite side walls.
  • the printed circuit board current transformer according to the invention has an iron circuit which is constructed from U-shaped metal sheets. Of the Iron circle is placed in openings of a printed circuit board. The openings in the circuit board are preferably arranged opposite one another. The leg elements of the iron circle are positioned in the openings of the circuit board. In each case about a leg element of the iron circle, a secondary ⁇ forming winding of the current transformer is formed with a plurality of turns in the circuit board.
  • FIG. 1 is a perspective view of an erected circuit board with openings and an integrated Lei ⁇ terbahn during the insertion of U-shaped sheets in the openings of the circuit board.
  • FIG. 2 is a perspective view of a printed circuit board current transformer according to the invention with separate caps; FIG.
  • FIG. 3 shows a perspective view of the printed circuit board current transformer produced according to the invention with fixed caps over the laminated cores of U-shaped metal sheets;
  • Fig. 1 is a direction perpendicular to the mounting direction
  • ⁇ te printed circuit board 1 is shown with openings 2 and with an integrated conductor 3, preferably a copper conductor, during the insertion of U-shaped sheets 4 in the openings 2 of the circuit board 1.
  • the openings 2 are Preference ⁇ wise rectangular shaped and are in the same position. Between the openings 2 there is a partial area of the printed circuit board 1, on which part the integrated conductor 3 is formed.
  • the U-shaped sheets have two legs 5, 6 and a transition region 7 connecting the two legs 5, 6.
  • the U-shaped sheets 4 are preferably mutually inserted via the legs 5, 6 in the Publ ⁇ voltages 2 of the circuit board 1 so that the transfer ⁇ transition regions are positioned right twice and once to the left of the circuit board 1 alternating 7 of the U-shaped plates. 4
  • FIG. 2 shows a printed circuit board current transformer produced according to the invention with separate caps 8.
  • the stacking of the U-shaped sheets 4 leads to the formation of a laminated core 9, which is arranged both above and below the printed circuit board 1.
  • the laminated cores 9 are not flat with the transition region on the circuit board 1, but are spaced from the circuit board 1 with the transition region 7, so that a recess 10 is formed, through which a busbar 11 can be performed.
  • the cap 8 is preferably formed as an open parallelepiped with a cover 12 and four side walls 13, 14, 15, 16. Preferably on two opposite side walls 14, 16 are arranged identically arranged recesses 17 which allow a recording of the busbar 11.
  • FIG. 3 shows a printed circuit board current transformer with fixed caps 8 produced in accordance with the invention over the laminated cores 9.
  • the inventive method for producing a printed circuit board current transformer is characterized by defined and small ⁇ ne air gaps between the individual sheets, whereby a higher magnetic efficiency is achieved.
  • the mechanically defined and reproducible fixation of the sheets to each other ⁇ causes the magnetic properties even when external mechanical influences and for the life remain the same.
  • the integration of the iron circuit in the PCB results in a much more compact Structure for the invention Leierplattenstromwandler with a smaller need for space.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transformers For Measuring Instruments (AREA)

Abstract

L'invention concerne un procédé de fabrication d'un transformateur de courant à carte de circuit imprimé, comprenant les étapes consistant à : redresser une carte de circuit imprimé (1) comportant des ouvertures (2) et une piste conductrice intégrée (3), de façon à l'orienter perpendiculairement à une direction de montage; aligner une barre omnibus (11) de façon à la positionner entre les ouvertures (2) de la carte de circuit imprimé (1) et introduire des tôles en U (4) dans les ouvertures (2) de la carte de circuit imprimé (1).
PCT/EP2017/072796 2016-10-12 2017-09-12 Procédé de fabrication d'un tranformateur de courant à carte de circuit imprimé WO2018068963A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016219790.8 2016-10-12
DE102016219790.8A DE102016219790A1 (de) 2016-10-12 2016-10-12 Verfahren zur Herstellung eines Leiterplattenstromwandlers

Publications (1)

Publication Number Publication Date
WO2018068963A1 true WO2018068963A1 (fr) 2018-04-19

Family

ID=59859076

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2017/072796 WO2018068963A1 (fr) 2016-10-12 2017-09-12 Procédé de fabrication d'un tranformateur de courant à carte de circuit imprimé

Country Status (2)

Country Link
DE (1) DE102016219790A1 (fr)
WO (1) WO2018068963A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3083364A1 (fr) 2018-07-02 2020-01-03 Valeo Systemes De Controle Moteur Composant formant au moins une inductance pour circuit electrique
FR3100653B1 (fr) 2019-09-10 2021-07-30 Valeo Systemes De Controle Moteur Composant formant au moins une inductance pour circuit électrique

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08172021A (ja) * 1994-12-16 1996-07-02 Shikoku Sogo Kenkyusho:Kk 変流器用鉄心の製造方法
JP2000021661A (ja) * 1998-06-30 2000-01-21 Omron Corp Ｃｔ型電流センサ
JP2008002876A (ja) * 2006-06-21 2008-01-10 Fuji Electric Systems Co Ltd 電流センサおよび電子式電力量計
WO2017054972A1 (fr) * 2015-09-29 2017-04-06 Siemens Aktiengesellschaft Module transformateur de courant

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08172021A (ja) * 1994-12-16 1996-07-02 Shikoku Sogo Kenkyusho:Kk 変流器用鉄心の製造方法
JP2000021661A (ja) * 1998-06-30 2000-01-21 Omron Corp Ｃｔ型電流センサ
JP2008002876A (ja) * 2006-06-21 2008-01-10 Fuji Electric Systems Co Ltd 電流センサおよび電子式電力量計
WO2017054972A1 (fr) * 2015-09-29 2017-04-06 Siemens Aktiengesellschaft Module transformateur de courant

Also Published As

Publication number Publication date
DE102016219790A1 (de) 2018-04-12

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