EP0451628A1 - Combinaison d'inductance et transformateur pour alimenter des lampes à vapeur métalliques sous haute pression pour circuits de bord de voitures - Google Patents

Combinaison d'inductance et transformateur pour alimenter des lampes à vapeur métalliques sous haute pression pour circuits de bord de voitures Download PDF

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Publication number
EP0451628A1
EP0451628A1 EP91104904A EP91104904A EP0451628A1 EP 0451628 A1 EP0451628 A1 EP 0451628A1 EP 91104904 A EP91104904 A EP 91104904A EP 91104904 A EP91104904 A EP 91104904A EP 0451628 A1 EP0451628 A1 EP 0451628A1
Authority
EP
European Patent Office
Prior art keywords
choke
coil
vehicle electrical
electrical systems
pressure metal
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Withdrawn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
EP91104904A
Other languages
German (de)
English (en)
Inventor
Uwe Ing.Grad Hartmann
Paul Dr. Dipl.-Ing. Grohs
Roman Dipl.-Ing. Fh Schichl
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.)
Vogt Electronic AG
Original Assignee
Vogt Electronic 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 Vogt Electronic AG filed Critical Vogt Electronic AG
Publication of EP0451628A1 publication Critical patent/EP0451628A1/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Withdrawn legal-status Critical Current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
    • H01F37/00—Fixed inductances not covered by group H01F17/00
    • 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
    • H01F30/10—Single-phase transformers
    • 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
    • H01F38/10—Ballasts, e.g. for discharge lamps

Definitions

  • the invention relates to a choke / transformer combination according to the introductory part of patent claim 1.
  • MHD lamps require voltages for ignition and operation that are significantly higher than the voltage of vehicle electrical systems, e.g. of motor vehicles and the like. Accordingly, it is necessary to first transform the vehicle electrical system voltage to the required level using a switching power supply.
  • ballast for the operation of an MHD lamp, a ballast (resonance) choke is also required, which keeps the lamp's burning current constant and which, in the resonant state, emits the required ignition voltage.
  • the combustion current is usually low frequency while the ignition voltage is generated at high frequency.
  • the invention has for its object to provide a structure that optimally meets the aforementioned requirement. This object is achieved by the features of patent claim 1.
  • the cores of both inductors namely the choke and the transformer, are combined into an overall core, the respective magnetic fluxes canceling one another at least partially, since the working frequency of both inductors is the same.
  • the sum of the flows results in other magnetic cross sections with the same induction, and two legs can be omitted (FIG. 5), which in addition to the desired reduction in dimensions also means a price reduction.
  • 1 shows the prior art.
  • 1 is the switching power supply transformer in the usual design as a flux converter without an air gap in the core
  • 2 represents the ballast (resonance) choke in a special design according to the as yet unpublished EP patent application 91103237.3 of March 4, 1991.
  • series (resonance) chokes with a coil body, the winding base of which is cylindrical and engage in the core leg sections, which are short from both ends, leaving a cylindrical air gap in the coil body.
  • Such a choke design inside the coil body is also suitable for the structure according to the invention, even if the basic design according to the EP patent application requires a particularly small volume.
  • FIG. 2 shows an embodiment of the throttle 2 according to FIG. 1, in which the core 3 is composed of two U-core halves 3a to form a frame core.
  • the winding base 4a of the coil former 4 practically encloses an air gap 5 between the upper and lower transverse legs of the core 3, the cross-sectional area A in the region of the coil former 4 being reduced from the air into the ferrite of the core 3 in the region of the field line exit from the air and the latter cross-sectional area B is so large that the associated induction just does not bring the ferrite into saturation.
  • the shear caused by the air gap 5 is so great here that the core 3 can be completely dispensed with a middle leg.
  • the ferrite core 3 consists only of the two-part frame, which increases the permeability and bundles the outer field lines, thereby creating a magnetic shielding function is achieved.
  • the aforementioned EP patent application also includes an embodiment of the throttle, in which the mid-leg sections shown in FIG. 3 are integrally connected to the rest of the core.
  • Such a design of the choke in the region of the coil body is also suitable in principle for the invention.
  • FIG. 4 shows the throttle according to FIG. 3 in cross section along the section line IV-IV in FIG. 3.
  • the coil body 4 is expediently constructed using chamber technology, as shown in FIGS. 2 and 3.
  • the cross-sectional area enclosed by the coil former base 4a preferably decreases continuously from the ends of the air gap 5 towards the center thereof. It is particularly advantageous if the cross-sectional decrease is adapted to the course of the field lines.
  • 5 shows an embodiment of the combination of choke and transformer according to the invention.
  • 6 is the one composed of two E-shaped parts Combination core, which has a laterally offset center leg 7, which is enclosed by the transformer windings 8.
  • the ballast (resonance) choke is attached, which is designed here in principle according to FIG. 2 and does not require a central core.
  • the magnetic fluxes are shown in FIG. 6, from which it can be seen that they partially compensate each other.
  • ⁇ F is the flux of the flux converter
  • ⁇ S is the flux of the ballast (resonance) choke. It can thus be seen that the resulting fluxes in leg 7 decrease, ie the magnetic cross-section can be reduced, while in legs 10 they add up, which can be compensated for by a higher magnetic cross-section. In the combination according to the invention, practically two legs are omitted.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
EP91104904A 1990-03-31 1991-03-27 Combinaison d'inductance et transformateur pour alimenter des lampes à vapeur métalliques sous haute pression pour circuits de bord de voitures Withdrawn EP0451628A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4010473 1990-03-31
DE19904010473 DE4010473A1 (de) 1990-03-31 1990-03-31 Drossel-trafokombination zum betreiben von metalldampfhochdruck (mhd)-lampen aus bordnetzen von fahrzeugen

Publications (1)

Publication Number Publication Date
EP0451628A1 true EP0451628A1 (fr) 1991-10-16

Family

ID=6403527

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91104904A Withdrawn EP0451628A1 (fr) 1990-03-31 1991-03-27 Combinaison d'inductance et transformateur pour alimenter des lampes à vapeur métalliques sous haute pression pour circuits de bord de voitures

Country Status (2)

Country Link
EP (1) EP0451628A1 (fr)
DE (1) DE4010473A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996001550A1 (fr) * 1994-07-05 1996-01-18 Robert Bosch Gmbh Systeme d'allumage pour lampes a decharge gazeuse, notamment pour feux d'automobiles
WO2008119406A1 (fr) * 2007-04-02 2008-10-09 Tridonicatco Gmbh & Co. Kg Ballast pour une lampe à décharge de gaz
EP1962303A3 (fr) * 2007-02-06 2009-02-11 HONDA MOTOR CO., Ltd. Transformateur de type combiné et circuit survolteur-dévolteur l'utilisant

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10159112A1 (de) * 2001-12-01 2003-06-18 Hella Kg Hueck & Co Zündtransformator für eine Gasentladungslampe in einem Kraftfahrzeug

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3231841A (en) * 1961-08-24 1966-01-25 Ohtake Masayasu Combined transformer and choke unit

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3719357A1 (de) * 1987-06-10 1988-12-29 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Schaltungsanordnung zum betrieb einer entladungslampe an einer niedervolt-spannungsquelle
DE4007148A1 (de) * 1990-03-07 1991-09-12 Vogt Electronic Ag Volumenoptimierte schwingdrossel fuer hohe aussteuerung und hohe guete

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3231841A (en) * 1961-08-24 1966-01-25 Ohtake Masayasu Combined transformer and choke unit

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, Band 9, Nr. 53 (E-301)[1776], 7. März 1985; & JP-A-59 193 010 (MATSUSHITA DENKO) 01-11-1984 *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996001550A1 (fr) * 1994-07-05 1996-01-18 Robert Bosch Gmbh Systeme d'allumage pour lampes a decharge gazeuse, notamment pour feux d'automobiles
AU702380B2 (en) * 1994-07-05 1999-02-18 Robert Bosch Gmbh Starter for gas discharge lamps, in particular motor-vehicule lights
EP1962303A3 (fr) * 2007-02-06 2009-02-11 HONDA MOTOR CO., Ltd. Transformateur de type combiné et circuit survolteur-dévolteur l'utilisant
US7808355B2 (en) 2007-02-06 2010-10-05 Honda Motor Co., Ltd. Combined type transformer and buck-boost circuit using the same
US8138744B2 (en) 2007-02-06 2012-03-20 Honda Motor Co., Ltd. Combined type transformer and buck-boost circuit using the same
WO2008119406A1 (fr) * 2007-04-02 2008-10-09 Tridonicatco Gmbh & Co. Kg Ballast pour une lampe à décharge de gaz

Also Published As

Publication number Publication date
DE4010473A1 (de) 1991-10-02
DE4010473C2 (fr) 1993-06-03

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