EP0923092A2 - Transformateur - Google Patents

Transformateur Download PDF

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Publication number
EP0923092A2
EP0923092A2 EP98204108A EP98204108A EP0923092A2 EP 0923092 A2 EP0923092 A2 EP 0923092A2 EP 98204108 A EP98204108 A EP 98204108A EP 98204108 A EP98204108 A EP 98204108A EP 0923092 A2 EP0923092 A2 EP 0923092A2
Authority
EP
European Patent Office
Prior art keywords
winding
primary winding
transformer
primary
parts
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.)
Ceased
Application number
EP98204108A
Other languages
German (de)
English (en)
Other versions
EP0923092A3 (fr
Inventor
Hubert c/o Philips Patentverwaltung GmbH Raets
Manfred Dr. c/o Philips Patentverw. GmbH Albach
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.)
Philips Intellectual Property and Standards GmbH
Koninklijke Philips NV
Original Assignee
Philips Corporate Intellectual Property GmbH
Philips Patentverwaltung GmbH
Koninklijke Philips Electronics NV
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 Philips Corporate Intellectual Property GmbH, Philips Patentverwaltung GmbH, Koninklijke Philips Electronics NV filed Critical Philips Corporate Intellectual Property GmbH
Publication of EP0923092A2 publication Critical patent/EP0923092A2/fr
Publication of EP0923092A3 publication Critical patent/EP0923092A3/fr
Ceased 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
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/08—High-leakage transformers or inductances

Definitions

  • the invention relates to a transformer, in particular for a Voltage converter comprising a primary winding with a predeterminable one Leakage inductance and at least one with the primary winding in a predetermined Voltage transformation ratio magnetically coupled secondary winding.
  • the core is preferably formed from magnetically conductive material Stray inductance determined by the number of turns of each Windings and the spatial arrangement of these windings.
  • the Stray inductance increases with increasing number of turns and with increasing distance between the windings.
  • the voltage gear ratio, the magnetization inductance and that in the transformer occurring losses and the resulting temperature increase determine the number of turns for the when dimensioning the transformer Primary and secondary winding. Due to these influences are the dimensioning limits of a transformer, especially with regard to the maximum permissible Number of turns.
  • the spatial arrangement of the To vary windings by the one chosen for the respective transformer Core limited. It turns out that the achievable values for the Leakage inductances are limited.
  • FR 2 730 342-A1 describes a transformer, in particular for a resonant one Power supply, known, of a primary winding and at least one Secondary winding around a common core.
  • the primary winding is in individual flat coils are split, facing each other along the direction of the axis of the Primary winding are shifted on the core.
  • To adjust the Stray inductance of the primary winding is the number of turns of the individual Flat coils of the primary winding are designed differently.
  • the invention has the task of a transformer of the type mentioned in the way that a larger value of the (primary) leakage inductance is made possible than can be achieved with the means of the prior art without the dimensioning limits for a functional transformer and without providing an additional coil or a larger core.
  • the task is carried out with a transformer of the type mentioned solved according to the invention in that the primary winding at least two Includes winding parts, the magnetic couplings with at least one of the Secondary windings are designed to act in opposite directions to each other and the are magnetically at least largely decoupled from one another.
  • the primary winding is desired in at least two parts split up using a magnetic flux in the core of the transformer opposite signs, i.e. Directions.
  • This will be in the way made that the magnetic generated by part of the winding parts Flows the magnetic fluxes from the remaining parts of the primary winding in one compensate for the predetermined amount.
  • the Transformer designed according to a further embodiment of the invention, that the winding parts of the primary winding one with respect to the direction of one of them primary current to be fed in in opposite directions exhibit.
  • the individual winding parts of the Primary winding with different winding direction, i.e. opposite, wrapped, or the ends of two winding parts of the primary winding with the same Winding sense are connected in opposite directions, i.e. such that the flowing through Electricity generates two opposing magnetic fluxes.
  • the ratio is Number of turns of the secondary winding (s) to the difference in the number of turns of the Winding parts of the primary winding according to the (or the) specified voltage transmission ratio (s) fixed.
  • a transformer of the type according to the invention can preferably be used for resonant Voltage converter, in particular the stray inductance of the primary Use the transformer as a resonant element.
  • Transformers especially in such a voltage converter, are can be used advantageously in electrical devices of all types, especially those with Energy supply from an energy supply network, but also from preferably electrochemical energy stores or such energy sources, whose voltages must be converted for use in the electrical device.
  • the primary winding 2 comprises between two Connection points 4 and 5 arranged electrically in series a first, left wound primary winding part 21, a second, right-wound Primary winding part 2r and a third, wrapped on the right Primary winding part 2pr.
  • the number of turns of the first and second Primary winding part 21 and 2r match, the second and third Primary winding parts 2r and 2pr are continuous in the example in FIG. 1 wrapped. With i a current flowing through the primary winding 2 is shown.
  • B1, Br and Bpr denote the magnetic induction (flux) through the Current i in the primary winding parts 21, 2r and 2pr are caused and the Flow through core 1.
  • the magnetic fluxes B1 and Br in their effect on the secondary winding 3.
  • the transformer i.e. its voltage-transmission ratio therefore acts from the primary side, i.e. the Connection points 4 and 5 to the secondary side, i.e. Connection points 6 and 7 of the Secondary winding 3, only the ratio of the number of turns of the third Primary winding part 2pr to secondary winding 3.
  • Fig. 2 shows a modification of the arrangement of FIG. 1, in contrast to Fig. 1 shows the primary winding parts all in the same winding direction, i.e. wrapped on the left, are.
  • the second and the third, wound on the left Primary winding part designated by the reference numerals 2r 'and 2pr'.
  • the The number of turns corresponds to that of FIG. 1.
  • Magnetic fluxes in opposite directions are the second end of the first in FIG Primary winding part 21 with the second end of the third primary winding part 2pr ' connected, whereas the first end of the second primary winding part 2r 'with the Connection point 5 of the primary winding 2 is connected.
  • the magnetic fluxes and thus the voltage transmission ratio and the leakage inductance of the 2 agree with those of the transformer of FIG. 1st match.
  • Fig. 3 shows a somewhat more detailed illustration Representation of the transformer according to FIG. 1. This includes in particular the second and the third primary winding part 2r and 2pr shown separately and thus that of they generated magnetic induction Br and Bpr.
  • the first Primary winding part 21 reproduces one in FIG. 3 in the upper part of core 1 left-hand magnetic flux Bl
  • the second primary winding part 2r one magnetic flux Br of equal magnitude, but directed to the right is due to the different winding direction of these primary winding parts.
  • the magnetic fluxes B1 and Br cancel each other out in core 1, see above that there is no resulting flux from these magnetic fluxes B1 and Br in Core 1, in particular in its lower part, that of the secondary winding 3 is enclosed there.
  • the first and second generate Primary winding part 21 and 2r only one stray field and thus a stray inductance. Only the third primary winding part 2pr also magnetizes the core 1 in its lower part and is therefore effective for energy transmission Secondary winding 3 and the voltage transmission ratio. Through A becomes a spatial distance between the first primary winding part 21 and the symbolizes the second primary winding part 2r, which decouples this Primary winding parts should serve.
  • the transformer according to the invention it is advantageous to set the distance between to choose the first and second primary winding part 21 and 2r large, as well the choice of a large distance between the third is advantageous Primary winding part 2pr and the secondary winding 3.
  • the first primary winding part 21 is on the Core 1 at the top left
  • the Secondary winding 3 is arranged on the core 1 at the bottom left.
  • FIG. 5 is the arrangement of the second and the third Primary winding part 2r + 2pr and the arrangement of the first primary winding part 21 unchanged from FIG. 4.
  • the secondary winding 3 is on the first primary winding part 21 applied.
  • the transformer can have several Received secondary windings. If an enlarged one for a secondary winding If leakage inductance is desired, the measures according to the invention can be used instead for the primary winding also for this secondary winding.
  • the Stray inductances of the transformer according to the invention can thereby be broad Limits can be dimensioned without an additional coil or a larger one Core is required as required for power transmission. This allows the transformer according to the invention can be made compact and inexpensive.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Coils Of Transformers For General Uses (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Dc-Dc Converters (AREA)
EP98204108A 1997-12-10 1998-12-03 Transformateur Ceased EP0923092A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19754845A DE19754845A1 (de) 1997-12-10 1997-12-10 Transformator
DE19754845 1997-12-10

Publications (2)

Publication Number Publication Date
EP0923092A2 true EP0923092A2 (fr) 1999-06-16
EP0923092A3 EP0923092A3 (fr) 2000-07-12

Family

ID=7851422

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98204108A Ceased EP0923092A3 (fr) 1997-12-10 1998-12-03 Transformateur

Country Status (4)

Country Link
US (1) US6100781A (fr)
EP (1) EP0923092A3 (fr)
JP (1) JPH11243019A (fr)
DE (1) DE19754845A1 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002199718A (ja) * 2000-12-22 2002-07-12 Sony Corp 共振型スイッチング電源装置
US7262521B2 (en) * 2003-12-31 2007-08-28 Pratt & Whitney Canada Corp. Variable AC voltage regulation control method and apparatus
TWI378478B (en) * 2007-01-09 2012-12-01 Mitsubishi Electric Corp Reactor-jointed transformer
WO2009110061A1 (fr) * 2008-03-04 2009-09-11 三菱電機株式会社 Transformateur électrique
US20100019875A1 (en) * 2008-07-25 2010-01-28 Ampower Technology Co., Ltd. High voltage transformer employed in an inverter
US8223515B2 (en) * 2009-02-26 2012-07-17 TECO—Westinghouse Motor Company Pre-charging an inverter using an auxiliary winding
JP2011035339A (ja) * 2009-08-06 2011-02-17 Panasonic Corp ストロボ装置用発光回路、及びそれを搭載したストロボ装置
CN201859742U (zh) * 2010-10-15 2011-06-08 国琏电子（上海）有限公司 高压变压器
JP5983637B2 (ja) * 2014-01-10 2016-09-06 株式会社デンソー トランス装置
DE102014202179A1 (de) * 2014-02-06 2015-01-22 Siemens Aktiengesellschaft Hochspannungstransformatoranordnung mit hoher, einstellbarer Streuinduktivität, Wechselrichterschaltung mit einer Hochspannungstransformatoranordnung und Verwendung einer Hochspannungstransformatoranordnung
KR102710673B1 (ko) * 2021-12-13 2024-09-25 재 환 이 평형3상입력-단상출력변압기

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE231939C (fr) *
US4473811A (en) * 1982-02-25 1984-09-25 General Instrument Corporation Single bobbin transformer having multiple delink windings and method of making same

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3445928A (en) * 1966-03-25 1969-05-27 Bunker Ramo Magnetometer method of manufacture
SU608205A1 (ru) * 1976-04-17 1978-05-25 Государственный Научно-Исследовательский Энергетический Институт Имени Г.М.Кржижановского Токоограничивающее устройство
US4166264A (en) * 1977-12-27 1979-08-28 Honeywell Inc. Intrusion detection transducers
US4902942A (en) * 1988-06-02 1990-02-20 General Electric Company Controlled leakage transformer for fluorescent lamp ballast including integral ballasting inductor
JPH08181023A (ja) * 1994-12-26 1996-07-12 Tamura Seisakusho Co Ltd インバータ用トランス
FR2730342A1 (fr) * 1995-02-08 1996-08-09 Thomson Television Components Transformateur electrique, en particulier pour circuit d'alimentation a resonance, et circuit equipe d'un tel transformateur

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE231939C (fr) *
US4473811A (en) * 1982-02-25 1984-09-25 General Instrument Corporation Single bobbin transformer having multiple delink windings and method of making same

Also Published As

Publication number Publication date
JPH11243019A (ja) 1999-09-07
EP0923092A3 (fr) 2000-07-12
DE19754845A1 (de) 1999-06-17
US6100781A (en) 2000-08-08

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