EP1797573B1 - Ringkern-transformator - Google Patents

Ringkern-transformator Download PDF

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Publication number
EP1797573B1
EP1797573B1 EP05799949A EP05799949A EP1797573B1 EP 1797573 B1 EP1797573 B1 EP 1797573B1 EP 05799949 A EP05799949 A EP 05799949A EP 05799949 A EP05799949 A EP 05799949A EP 1797573 B1 EP1797573 B1 EP 1797573B1
Authority
EP
European Patent Office
Prior art keywords
transformer
toroidal cores
toroidal
housing
phase windings
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.)
Not-in-force
Application number
EP05799949A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1797573A1 (de
Inventor
Volker Werner Hanser
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.)
Individual
Original Assignee
Individual
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
Priority claimed from DE102004048793A external-priority patent/DE102004048793B3/de
Application filed by Individual filed Critical Individual
Priority to SI200530677T priority Critical patent/SI1797573T1/sl
Priority to EP08010495A priority patent/EP1959459B1/de
Priority to EP08010496A priority patent/EP1959460B1/de
Priority to PL05799949T priority patent/PL1797573T3/pl
Publication of EP1797573A1 publication Critical patent/EP1797573A1/de
Application granted granted Critical
Publication of EP1797573B1 publication Critical patent/EP1797573B1/de
Priority to CY20091100488T priority patent/CY1109446T1/el
Not-in-force 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
    • H01F30/00—Fixed transformers not covered by group H01F19/00
    • H01F30/06—Fixed transformers not covered by group H01F19/00 characterised by the structure
    • H01F30/16—Toroidal transformers
    • 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
    • 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
    • H01F41/04—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 for manufacturing coils
    • H01F41/06—Coil winding
    • H01F41/061—Winding flat conductive wires or sheets
    • H01F41/063—Winding flat conductive wires or sheets with insulation
    • 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
    • H01F41/04—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 for manufacturing coils
    • H01F41/06—Coil winding
    • H01F41/08—Winding conductors onto closed formers or cores, e.g. threading conductors through toroidal cores
    • 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
    • H01F41/04—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 for manufacturing coils
    • H01F41/06—Coil winding
    • H01F41/09—Winding machines having two or more work holders or formers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F30/00—Fixed transformers not covered by group H01F19/00
    • H01F30/06—Fixed transformers not covered by group H01F19/00 characterised by the structure
    • H01F30/12—Two-phase, three-phase or polyphase transformers
    • 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
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/4902—Electromagnet, transformer or inductor
    • 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
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/4902—Electromagnet, transformer or inductor
    • Y10T29/49071—Electromagnet, transformer or inductor by winding or coiling

Definitions

  • the invention relates to a toroidal transformer, in particular a multiphase transformer having a plurality of axially adjacent arranged cores, each adjacent ring cores carry phase windings of different phases.
  • transformers with stacked ring cores are from the US Pat. No. 2,832,012 , of the EP 0 510 252 A and the WO 95/11514 A known, wherein in these transformers, the different phase nuclei are not assigned to different phases.
  • the insulation measures are very expensive.
  • the isolation measures require a certain size of the multiphase transformer, whereby its space requirement is increased.
  • This toroidal transformer is designed for operation at low voltage. When used in the medium-voltage range, there would be high potential differences and thus arcing both in the area of the terminals and the windings themselves.
  • the object is to provide a toroidal transformer of the type mentioned, for the only reduced isolation measures are required and the size is reduced.
  • a high power density should be possible with a small size.
  • connection points of the phase windings of two adjacent ring cores are arranged offset from one another in the circumferential direction.
  • the electrical phase shift between the individual phase windings of the polyphase transformer is practically canceled or reduced by a mechanical offset of the phase windings.
  • the potential difference between adjacent winding sections of different phases is reduced, so that correspondingly less costly insulation measures for insulating adjacent phase windings against each other are required and thus the cost of the insulation measures are also reduced.
  • Due to the lower potential differences between the phase windings of adjacent ring cores these can also be arranged at a smaller distance from each other, whereby the size of the multiphase transformer is reduced.
  • a particularly favorable embodiment provides that the offset or the geometric angle between the connection points of the phase windings of two adjacent ring cores corresponds to the phase shift or the electrical phase angle between the voltage signals of these toroidal cores. Between directly adjacent winding sections of two ring cores, there is virtually no potential difference. In a three-phase system, the connection points of the three phase windings are each offset by 120 ° relative to one another in order to mechanically compensate for the phase angle between the individual phases.
  • An embodiment of the toroidal transformer according to the invention of independent significance provides that one of the design of toroidal transformers adapted, preferably substantially cylindrical housing is provided for the ring cores with phase windings, and that preferably at one axial end of the housing, a fan or the like fan is provided.
  • the ring cores with the phase windings are arranged protected in the housing from dirt and damage. With the fan, the arrangement is cooled to a thermal To avoid overloading the polyphase transformer.
  • the housing with the planned cooling measures favors a compact design of the transformer with high power density.
  • this has an advantageous effect, because even these measures lead to a compact design that makes appropriate cooling measures required.
  • the housing of the transformer is designed as a heat exchanger and connected to the hollow conduits.
  • the housing can be double-walled, in order to dissipate the heat particularly well to the outside.
  • the coolant can be pumped through the waveguides and housing with a pump.
  • a particularly advantageous embodiment provides that on the outside of the housing heat sink or the like protruding elements are provided to increase the housing surface, or that the housing has a profiled surface. Due to the enlarged surface, the heat is better dissipated and thermal overloads can be avoided.
  • the transformer coils are individually with casting resin, wherein a housing for the respective coil is formed by the casting resin.
  • a complementary shape to the desired heat sinks or cooling fins molded mold may be provided so as to obtain the desired outer contour with protruding elements for surface enlargement directly when casting the coils.
  • An initially smooth housing surface can also be increased by the surface roughened by a suitable method, such as etching or sandblasting, structured or profiled.
  • the surface has a structure with which the heat can be better dissipated. It should be mentioned that the spacer and insulation elements can be poured simultaneously with the casting of the transformer coils.
  • a receptacle is provided with a cooling medium for partially or completely inserting the transformer.
  • a particularly advantageous embodiment provides that the toroidal cores of the multiphase transformer are formed in a modular manner with their respective phase windings and that a holding device is provided for holding and for fixing the module-like toroidal cores to each other.
  • Several modules can be interconnected in such a way that the power of the transformer can be increased. As a result, transformers with outputs over 100MVA can be realized.
  • the individual modules are held with a holding device and fixed in position relative to each other.
  • insulation elements for insulating the phase windings in particular to the outside, can be provided.
  • In the axial direction need only be provided as supports for the toroidal cores between adjacent toroidal cores or their phase windings only to support the toroidal cores in their position and to prevent slippage of the toroidal cores. Special isolation measures are not necessary because of the mechanical rotation of the connection points of the phase windings according to the electrical phase position in the respective phase windings and the advantages thus achieved.
  • Fig. 1 shows a schematic representation of a lateral section through a multi-phase transformer according to the invention with three axially adjacent arranged ring cores.
  • FIG. 1 is a generally designated with 101 polyphase transformer having three stacked axially in the axial direction of ring cores 102.
  • adjacent ring cores 102 carry phase windings of different phases, wherein the phase windings are respectively applied to the ring cores 102 annularly enclosing coil bobbins 103.
  • bobbin 103 are each arranged with primary and secondary windings next to each other or one above the other. It is also possible for primary and secondary windings to be applied together to a bobbin 103.
  • the ring cores 102 are arranged in a holding device 104 which has outer and inner guide rails 105a, 105b for forming a receiving region for the toroidal cores 102.
  • the guide rails 105a, 105b are each made of insulating material, so that the ring cores 102 and the phase windings on the bobbin 103 of the ring cores 102 are laterally outwardly insulated.
  • the holding device 104 has on its underside a bottom part 107, which likewise consists of insulating material.
  • insulating support elements 108 are provided for the lower ring core 102.
  • a plurality of spaced bearing elements 108 may be provided, or it is a continuous ring as a support element 108 is provided.
  • Spacers 109 are respectively provided between the individual ring cores 102 with which the ring cores 102 or the coil cores 103 respectively assigned to the toroidal cores 102 are fixed relative to one another in their position.
  • Insulating support elements 108 are again provided above the upper ring core 102, on which a cover part 110 rests and the toroidal cores 102 are also insulated on the upper side towards the outside.
  • the Indian FIG. 1 shown polyphase transformer 101 is formed as a three-phase transformer.
  • the connection points of the individual phase windings of the toroidal cores 102 or of the spool bodies 103, which are not illustrated in more detail, are each offset by 120 ° relative to one another.
  • the phase windings are thereby mechanically um an angle offset from one another, which corresponds to the electrical phase shift or the electrical phase angle between the voltage signals of these phase windings.
  • the multi-phase transformer 101 can thereby be constructed compact and with reduced space requirements.
  • no or only little insulation measures are required, whereby costs are saved and the construction is simplified.
  • the ring cores 102 are formed with their respective bobbins 103 like a module.
  • the affected toroidal core can be exchanged for a replacement module or the defective module is electrically disconnected and a replacement module is provisionally connected to the polyphase transformer 101.
  • a replacement module is provisionally connected to the polyphase transformer 101.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Coils Of Transformers For General Uses (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)
  • Insulating Of Coils (AREA)
EP05799949A 2004-10-07 2005-10-06 Ringkern-transformator Not-in-force EP1797573B1 (de)

Priority Applications (5)

Application Number Priority Date Filing Date Title
SI200530677T SI1797573T1 (sl) 2004-10-07 2005-10-06 Transformator s toroidnimi jedri
EP08010495A EP1959459B1 (de) 2004-10-07 2005-10-06 Verfahren zur Herstellung eines Ringkerns
EP08010496A EP1959460B1 (de) 2004-10-07 2005-10-06 Verfahren zur Herstellung eines Transformators
PL05799949T PL1797573T3 (pl) 2004-10-07 2005-10-06 Transformator z rdzeniem pierścieniowym
CY20091100488T CY1109446T1 (el) 2004-10-07 2009-05-06 Μετασχηματιστης με τοροειδη πυρηνα

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102004048793A DE102004048793B3 (de) 2004-10-07 2004-10-07 Ringkern-Transformator
DE102005041975 2005-09-03
PCT/EP2005/010783 WO2006040074A1 (de) 2004-10-07 2005-10-06 Ringkern-transformator

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP08010495A Division EP1959459B1 (de) 2004-10-07 2005-10-06 Verfahren zur Herstellung eines Ringkerns
EP08010496A Division EP1959460B1 (de) 2004-10-07 2005-10-06 Verfahren zur Herstellung eines Transformators

Publications (2)

Publication Number Publication Date
EP1797573A1 EP1797573A1 (de) 2007-06-20
EP1797573B1 true EP1797573B1 (de) 2009-02-25

Family

ID=35509325

Family Applications (3)

Application Number Title Priority Date Filing Date
EP08010495A Not-in-force EP1959459B1 (de) 2004-10-07 2005-10-06 Verfahren zur Herstellung eines Ringkerns
EP08010496A Not-in-force EP1959460B1 (de) 2004-10-07 2005-10-06 Verfahren zur Herstellung eines Transformators
EP05799949A Not-in-force EP1797573B1 (de) 2004-10-07 2005-10-06 Ringkern-transformator

Family Applications Before (2)

Application Number Title Priority Date Filing Date
EP08010495A Not-in-force EP1959459B1 (de) 2004-10-07 2005-10-06 Verfahren zur Herstellung eines Ringkerns
EP08010496A Not-in-force EP1959460B1 (de) 2004-10-07 2005-10-06 Verfahren zur Herstellung eines Transformators

Country Status (24)

Country Link
US (1) US20080007378A1 (zh)
EP (3) EP1959459B1 (zh)
JP (1) JP2008516433A (zh)
KR (1) KR20070102987A (zh)
CN (1) CN101036204A (zh)
AP (1) AP2125A (zh)
AT (3) ATE424030T1 (zh)
AU (1) AU2005293857B2 (zh)
BR (1) BRPI0516543A (zh)
CA (1) CA2583262A1 (zh)
CY (1) CY1109446T1 (zh)
DE (1) DE502005006711D1 (zh)
DK (1) DK1797573T3 (zh)
EA (3) EA012992B1 (zh)
EG (1) EG24744A (zh)
ES (1) ES2321638T3 (zh)
MA (1) MA29002B1 (zh)
MX (1) MX2007004125A (zh)
PL (1) PL1797573T3 (zh)
PT (1) PT1797573E (zh)
SI (1) SI1797573T1 (zh)
TN (1) TNSN07129A1 (zh)
WO (1) WO2006040074A1 (zh)
ZA (1) ZA200702353B (zh)

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US20080061915A1 (en) * 2006-09-11 2008-03-13 Rodney Godbey Dry-type transformer with shielded core/coil assembly and method of manufacturing the same
FR2907591B1 (fr) 2006-10-20 2009-01-16 Centre Nat Rech Scient Procede d'alimentation d'un coupleur magnetique et dispositif d'alimentation d'un dipole electrique.
US7834736B1 (en) 2009-07-31 2010-11-16 Abb Technology Ag Dry type pole-mounted transformer
US9257412B2 (en) * 2012-09-12 2016-02-09 Taiwan Semiconductor Manufacturing Company, Ltd. Stress reduction apparatus
CN103050273B (zh) * 2012-12-27 2015-12-09 吴江变压器有限公司 三相椭圆形线圈用的压具
US9878060B2 (en) * 2014-02-19 2018-01-30 Tetra Laval Holdings & Finance S.A. Sterilization device and an electron beam emitter
CN103971921A (zh) * 2014-05-19 2014-08-06 苏州上电科电气设备有限公司 一种变压器绕线机夹具
RU168099U1 (ru) * 2016-06-16 2017-01-18 Публичное акционерное общество "Транснефть" (ПАО "Транснефть") Трансформатор преобразовательный трехфазный многообмоточный с замкнутой системой воздушного охлаждения
WO2018231836A1 (en) * 2017-06-13 2018-12-20 Radyne Corporation Toroidal hand-held autotransformer assembly
MX2020012926A (es) * 2018-05-31 2021-03-09 Hubbell Inc Transformador toroidal trifasico.
DE102018118551A1 (de) * 2018-07-31 2020-02-06 Tdk Electronics Ag Verfahren zur Herstellung eines induktiven Bauelements und induktives Bauelement

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US2305999A (en) * 1940-06-26 1942-12-22 Line Material Co Method and machine for winding coils
US2452733A (en) * 1946-10-08 1948-11-02 Western Electric Co Winding machine
US2832012A (en) * 1954-02-11 1958-04-22 Honeywell Regulator Co Magnetic amplifier structure
DE1016377B (de) 1954-12-27 1957-09-26 Licentia Gmbh Kreisfoermiger Bandringkern mit abgestuftem Kernquerschnitt
US3043000A (en) * 1958-04-24 1962-07-10 Mc Graw Edison Co Method of forming a conductive coil on a closed magnetic core
US3089074A (en) * 1960-03-18 1963-05-07 Superior Electric Co Adjustable voltage rectifier
FR1333285A (fr) * 1962-09-04 1963-07-26 A R L Etablissements Augier So Nouveau mode de fabrication des noyaux magnétiques et enroulements de transformateurs
US3274526A (en) * 1963-07-17 1966-09-20 High Voltage Engineering Corp Insulating core transformers
US3461952A (en) * 1967-10-09 1969-08-19 Robert M Decker Apparatus and method for dissipating heat from a heat source
US3465273A (en) 1967-12-14 1969-09-02 Hunterdon Transformer Co Toroidal inductor
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US4542362A (en) * 1982-02-19 1985-09-17 Societe Nouvelle Transfix Electrical transformers with improved insulation and coolant guiding
FR2561033B1 (fr) * 1984-03-06 1988-11-10 Beisser Jean Claude Transformateur et son procede de fabrication
US4765861A (en) * 1985-02-06 1988-08-23 Kuhlman Corporation Apparatus and method for winding a toroidal magnetic core onto a bobbin for a toroidal transformer
US4771957A (en) * 1985-02-06 1988-09-20 Kuhlman Corporation Apparatus and method for fabricating a low voltage winding for a toroidal transformer
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NL9002753A (nl) * 1990-12-14 1992-07-01 Philips Nv Inductieve inrichting met een ringvormige kern.
EP0510252B1 (en) * 1991-04-26 1995-06-07 International Business Machines Corporation Coaxial isolation mounting of a toroidal transformer
DE59203473D1 (de) * 1992-02-26 1995-10-05 Volker Hanser Ringkerntransformator.
JP2571032Y2 (ja) * 1992-08-24 1998-05-13 株式会社前川製作所 三相平衡摺動変圧器
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Also Published As

Publication number Publication date
EA200900170A1 (ru) 2009-06-30
ATE554489T1 (de) 2012-05-15
TNSN07129A1 (en) 2008-11-21
AU2005293857B2 (en) 2009-10-01
EP1959460A2 (de) 2008-08-20
EA012993B1 (ru) 2010-02-26
EP1959459B1 (de) 2012-04-18
ES2321638T3 (es) 2009-06-09
EP1959459A2 (de) 2008-08-20
CN101036204A (zh) 2007-09-12
MX2007004125A (es) 2007-08-02
WO2006040074A1 (de) 2006-04-20
MA29002B1 (fr) 2007-11-01
EA200900169A1 (ru) 2009-06-30
AU2005293857A1 (en) 2006-04-20
AP2125A (en) 2010-05-17
PL1797573T3 (pl) 2009-07-31
CA2583262A1 (en) 2006-04-20
AP2007003983A0 (en) 2007-06-30
JP2008516433A (ja) 2008-05-15
EA012992B1 (ru) 2010-02-26
EA200700561A1 (ru) 2007-10-26
EP1959460B1 (de) 2012-04-18
EP1959459A3 (de) 2008-09-03
SI1797573T1 (sl) 2009-08-31
KR20070102987A (ko) 2007-10-22
CY1109446T1 (el) 2014-08-13
EP1959460A3 (de) 2008-10-01
EG24744A (en) 2010-07-18
DK1797573T3 (da) 2009-06-02
BRPI0516543A (pt) 2008-09-09
ATE554488T1 (de) 2012-05-15
PT1797573E (pt) 2009-05-21
ZA200702353B (en) 2008-04-30
EP1797573A1 (de) 2007-06-20
DE502005006711D1 (de) 2009-04-09
US20080007378A1 (en) 2008-01-10
ATE424030T1 (de) 2009-03-15
EA012485B1 (ru) 2009-10-30

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