EP0039901B1 - Bobine électrique d'inductance shunt et machine automatique pour découper des tôles - Google Patents

Bobine électrique d'inductance shunt et machine automatique pour découper des tôles Download PDF

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Publication number
EP0039901B1
EP0039901B1 EP81103444A EP81103444A EP0039901B1 EP 0039901 B1 EP0039901 B1 EP 0039901B1 EP 81103444 A EP81103444 A EP 81103444A EP 81103444 A EP81103444 A EP 81103444A EP 0039901 B1 EP0039901 B1 EP 0039901B1
Authority
EP
European Patent Office
Prior art keywords
sheets
axis
sheet
pile
magnetic
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.)
Expired
Application number
EP81103444A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0039901A1 (fr
Inventor
Gérard Messé
Michel Faure
Marcel Ducombs
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.)
Alstom SA
Original Assignee
Alsthom Atlantique SA
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 Alsthom Atlantique SA filed Critical Alsthom Atlantique SA
Publication of EP0039901A1 publication Critical patent/EP0039901A1/fr
Application granted granted Critical
Publication of EP0039901B1 publication Critical patent/EP0039901B1/fr
Expired 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
    • H01F27/245—Magnetic cores made from sheets, e.g. grain-oriented
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/202—With product handling means
    • Y10T83/2033—Including means to form or hold pile of product pieces
    • Y10T83/2037—In stacked or packed relation
    • Y10T83/2046—Including means to move stack bodily
    • Y10T83/2048—By movement of stack holder
    • Y10T83/205—By timed relocation of holder along path of stack gscheme-change-itemth
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/546—Interrelated tool actuating and work guide moving means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/566—Interrelated tool actuating means and means to actuate work immobilizer
    • Y10T83/5815—Work-stop abutment
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/748—With work immobilizer
    • Y10T83/7593—Work-stop abutment
    • Y10T83/7607—Normal to plane of cut
    • Y10T83/7613—Adjustable

Definitions

  • the present invention relates to a shunt inductor.
  • a core of such a coil is then formed by a vertical stack of sections of iron separated by air gaps.
  • the sheets of a section are arranged substantially radially so as to form a top view of a disc with a central hole.
  • the disc is produced in portions.
  • a portion is constituted by a juxtaposition of sheets placed in the vertical planes of degraded lengths.
  • a portion comprises for example five sheets making steps.
  • the rolling direction of the sheets is axial, parallel to the direction of the main magnetic field.
  • each portion comprises several bundles of sheets, the steps being produced between the different bundles.
  • the aim of the present invention is to improve the filling coefficient, to facilitate the industrial manufacture of the cores and to conserve total losses of iron, due to the main magnetic flux and additional losses due to the fringes between successive sections (or wafers), minimal.
  • the present invention therefore relates to an electric shunt inductor for electric power transmission lines comprising a magnetic core around which is placed an electrical winding with a vertical axis, and a magnetic mantle for closing the magnetic circuit, said magnetic core comprising a vertical stack of iron sections, separated from each other by air gaps, each section being in the form of a disc with a central hole, and being constituted by a juxtaposition of a plurality of portions, each portion comprising a succession of magnetic sheets situated in vertical planes parallel to the axis of the electrical winding, a said portion being formed of a first pack of sheets of all identical lengths and of a second pack of sheets characterized in that said second bundle is formed of sheets of lengths decreasing regularly from one sheet to the next, and in that the direction of rolling of the sheets is perpendicular to the axis of the coil.
  • said first pack of sheets is divided into two parts sandwiching said second pack of sheets.
  • the filling coefficient in such an arrangement is greater than or equal to 0.94 which is better than all known cases, and the total magnetic losses which are due to the losses of the main flow and to the losses of the leakage flow of the fringes between sections successive are generally very close.
  • the losses due to the main flow are, in the arrangement according to the invention, of the order of two and a half times greater than those in the known arrangement cited above, because of the direction of rolling of the sheets which is in the invention, perpendicular to the axis of the coil, on the other hand, in the arrangement according to the invention, the losses due to the fringes are negligible. In total the losses are not greater.
  • the advantage of this arrangement remains, even in the case of magnetic sheets whose crystals are oriented in the direction of rolling although in this case, the direction of the inductor is perpendicular to the preferred direction of use of the sheets.
  • the invention also relates to an automatic machine for cutting sheets comprising means for feeding, onto the machine, a length of sheet which can be adjusted continuously and at will, a shear and a device for receiving sheets. cut characterized in that the device for receiving the cut sheets comprises a pallet which can be lifted at an angle a with respect to the horizontal plane around an axis perpendicular to the direction of movement of the sheet, said axis being located on the side of the pallet closer to the shears, means for lowering the receiving device and means for moving the receiving device downstream relative to the direction of movement of the sheet.
  • FIG. 7 schematically represents a machine for cutting sheets.
  • a portion 1 is formed by the juxtaposition of several packages 2, 3, 4, 5 four in this case, of sheets 6. In each pack, the sheets have the same length but this decreases from pack 2 to pack 5.
  • the sheets 6 are placed vertically, that is to say in planes parallel to the axis 7 of the coil which is also that of the section 8.
  • This portion 1 thus comprises steps and the assembly of a plurality of such portions 1 to form the complete section 8 leaves gaps 9 and the filling factor hardly exceeds 0.8. These voids are then filled during impregnation with polymerizable resin.
  • the direction of rolling of the sheets is parallel to the axis 7 of the coil and symbolized by the sign marked 10, or to cut the sheets, one starts from rolls such as the roll 11 of FIG. 2, the rolling direction is that indicated in this FIG. 2 by the arrow F. It is therefore necessary for each package 2, 3, 4 or 5 to use a roller 11 whose width L corresponds to the length L of the package considered. Sheets are then cut over a length e equal to the thickness e (fig. 6) of the section 8.
  • the width of the packets is therefore increased so as to obtain a reasonable compromise between the number of packets and the filling coefficient.
  • the arrangement of the sheets so that the direction of the rolling is that indicated by the sign referenced 10, that is to say parallel to the axis 7 of the coil is obvious since it corresponds to the direction of the main flow of the coil.
  • the invention lies precisely in the fact, as seen in Figure 3, to arrange the sheets so that their direction of rolling is, for each sheet, perpendicular to the axis 7 of the coil is in the direction F i .
  • the machine is programmed to cut variable sheet widths.
  • FIG. 3 shows a portion 1 of a section 8 produced according to the invention. This portion consists of two packages 12 and 13 of sheets 6 all having an identical length.
  • FIG. 4 shows the juxtaposition of the different portions 1 in the section 8.
  • Figures 5 and 6 show a complete section ready for impregnation.
  • mechanically resistant and insulating cylinders 15 and 16 are placed on the external and internal periphery, and a glass fabric 17 and 18 on the top and bottom.
  • dividers 19 are placed so as to create an air gap between the section and the next which will be placed above. These dividers are made of slate.
  • the assembly is then placed in an oven in which a vacuum is produced, an impregnating resin such as a polymerizable epoxy resin is then poured drop by drop, then the heat treatment for the polymerization is carried out.
  • an impregnating resin such as a polymerizable epoxy resin
  • the package 13 of sheets of identical length is cut out.
  • the actuator 30 lowers the frame 24 continuously so that the height of fall of the cut sheets is constant.
  • the jack 31 pushes the frame 24 to the right and the pack of sheets 32 can be taken.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)
  • Shearing Machines (AREA)
  • Accessories And Tools For Shearing Machines (AREA)
  • Coils Or Transformers For Communication (AREA)
EP81103444A 1980-05-12 1981-05-07 Bobine électrique d'inductance shunt et machine automatique pour découper des tôles Expired EP0039901B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8010574 1980-05-12
FR8010574A FR2482362A1 (fr) 1980-05-12 1980-05-12 Bobine electrique d'inductance shunt

Publications (2)

Publication Number Publication Date
EP0039901A1 EP0039901A1 (fr) 1981-11-18
EP0039901B1 true EP0039901B1 (fr) 1984-12-19

Family

ID=9241858

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81103444A Expired EP0039901B1 (fr) 1980-05-12 1981-05-07 Bobine électrique d'inductance shunt et machine automatique pour découper des tôles

Country Status (9)

Country Link
US (2) US4453150A (enrdf_load_stackoverflow)
EP (1) EP0039901B1 (enrdf_load_stackoverflow)
JP (1) JPS5787109A (enrdf_load_stackoverflow)
BR (1) BR8102918A (enrdf_load_stackoverflow)
CA (1) CA1174306A (enrdf_load_stackoverflow)
DE (1) DE3167800D1 (enrdf_load_stackoverflow)
FR (1) FR2482362A1 (enrdf_load_stackoverflow)
IN (2) IN160193B (enrdf_load_stackoverflow)
RO (1) RO86829A (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3537437A1 (de) * 1985-10-21 1987-04-23 Transformatoren Union Ag Drosselspule mit mindestens einem im querschnitt kreisfoermigen eisenkern
DE3533323A1 (de) * 1985-09-18 1987-04-30 Transformatoren Union Ag Drosselspule mit mindestens einem im querschnitt kreisringfoermigen eisenkern

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59217312A (ja) * 1983-05-26 1984-12-07 Toshiba Corp ギヤツプ付鉄心形リアクトル
JPS6174313A (ja) * 1984-09-19 1986-04-16 Daihen Corp 鉄心ブロツクの製造方法
JPS61159716A (ja) * 1984-12-30 1986-07-19 Aichi Electric Mfg Co Ltd リアクトル鉄心の積層方法及び同積層装置
DE3502176A1 (de) * 1985-01-23 1986-07-24 Bielomatik Leuze Gmbh + Co, 7442 Neuffen Vorrichtung zum falzen von materialbahnen
US6087626A (en) 1998-02-17 2000-07-11 Illinois Tool Works Inc. Method and apparatus for welding
US9927796B2 (en) * 2001-05-17 2018-03-27 Sawstop Holding Llc Band saw with improved safety system
AU2001245556A1 (en) * 2000-03-10 2001-09-24 Martin J. Rotter Cutting system for cutting profiles in air-permeable and resilient materials and method
JP6067211B2 (ja) * 2011-05-27 2017-01-25 日産自動車株式会社 非接触給電装置
JP6077215B2 (ja) * 2012-03-15 2017-02-08 トクデン株式会社 積層鉄心、静止誘導機器用脚鉄心及び静止誘導機器
JP2013252590A (ja) * 2012-06-07 2013-12-19 Hal Electronics Co Ltd 積層コア製造用の積層材製造装置並びに積層コア製造用の積層材製造方法
CN106077801B (zh) * 2016-06-21 2017-10-20 金锢电气有限公司 带材的自动下料机
CN110246674B (zh) * 2019-03-15 2020-12-01 江苏五洲电力科技有限公司 一种电抗器扇形铁心饼成型方法
CN110164676B (zh) * 2019-03-15 2024-03-29 江苏五洲电力科技有限公司 一种电抗器扇形铁心饼成型模具
CN111113880B (zh) * 2019-12-30 2024-10-15 东莞市斯必迪机械设备有限公司 一种双功能自动对贴机
CN114888579B (zh) * 2022-03-29 2023-03-03 中磁科技股份有限公司 钕铁硼自动检测粘料掰料的生产线

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA512381A (en) * 1955-04-26 Westinghouse Electric Corporation Magnetic core structure and method of making
FR504328A (fr) * 1916-03-02 1920-06-30 Alsacienne Constr Meca Perfectionnements dans la construction des noyaux magnétiques
DE715650C (de) * 1936-01-07 1942-01-05 Bbc Brown Boveri & Cie Kreiszylinderfoermiger, beweglicher Kernteil fuer Transformatoren oder Drosselspulen
FR876897A (fr) * 1939-11-23 1942-11-19 Bbc Brown Boveri & Cie Transformateur avec noyau à tôles radiales ou en développantes
US2468786A (en) * 1944-08-21 1949-05-03 Allis Chalmers Mfg Co Electromagnetic core assembly and method
FR943261A (fr) * 1946-03-14 1949-03-03 Bbc Brown Boveri & Cie Transformateur monophasé
US2962679A (en) * 1955-07-25 1960-11-29 Gen Electric Coaxial core inductive structures
FR1131038A (fr) * 1955-09-19 1957-02-14 Cem Comp Electro Mec Perfectionnement aux inductances
US3220291A (en) * 1961-11-13 1965-11-30 Porter Co Inc H K Apparatus for sizing and cutting strip core material
US3220568A (en) * 1963-03-18 1965-11-30 Sylvania Electric Prod Lamination stacking apparatus
DE1538119B2 (de) * 1965-11-20 1970-05-21 Siemens AG, 1000 Berlin u. 8000 München Magnetkern für Drosselspulen
FR2144555B1 (enrdf_load_stackoverflow) * 1971-07-05 1974-12-20 Gilev Vitaly
CH531456A (de) * 1972-03-30 1972-12-15 Bbc Brown Boveri & Cie Stapeleinrichtung für eine Transformatorblechablänganlage
FR2248596A1 (en) * 1973-10-19 1975-05-16 Jeumont Schneider Method of forming stepped transformer magnet - involves assembling packs of sheets in two mould halves before winding
CH596650A5 (enrdf_load_stackoverflow) * 1976-07-26 1978-03-15 Bbc Brown Boveri & Cie

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3533323A1 (de) * 1985-09-18 1987-04-30 Transformatoren Union Ag Drosselspule mit mindestens einem im querschnitt kreisringfoermigen eisenkern
DE3533323C2 (enrdf_load_stackoverflow) * 1985-09-18 1989-04-13 Siemens Ag, 1000 Berlin Und 8000 Muenchen, De
DE3537437A1 (de) * 1985-10-21 1987-04-23 Transformatoren Union Ag Drosselspule mit mindestens einem im querschnitt kreisfoermigen eisenkern
DE3537437C2 (enrdf_load_stackoverflow) * 1985-10-21 1989-05-24 Siemens Ag, 1000 Berlin Und 8000 Muenchen, De

Also Published As

Publication number Publication date
RO86829A (ro) 1986-12-10
FR2482362B1 (enrdf_load_stackoverflow) 1984-01-06
US4522094A (en) 1985-06-11
IN160410B (enrdf_load_stackoverflow) 1987-07-11
FR2482362A1 (fr) 1981-11-13
DE3167800D1 (en) 1985-01-31
EP0039901A1 (fr) 1981-11-18
CA1174306A (fr) 1984-09-11
US4453150A (en) 1984-06-05
JPS6359526B2 (enrdf_load_stackoverflow) 1988-11-21
IN160193B (enrdf_load_stackoverflow) 1987-06-27
BR8102918A (pt) 1982-02-02
JPS5787109A (en) 1982-05-31

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