EP0445704B1 - Bobine de réactance, en particulier pour la commande de lampes à vapeur métallique sous haute pression - Google Patents

Bobine de réactance, en particulier pour la commande de lampes à vapeur métallique sous haute pression Download PDF

Info

Publication number
EP0445704B1
EP0445704B1 EP91103237A EP91103237A EP0445704B1 EP 0445704 B1 EP0445704 B1 EP 0445704B1 EP 91103237 A EP91103237 A EP 91103237A EP 91103237 A EP91103237 A EP 91103237A EP 0445704 B1 EP0445704 B1 EP 0445704B1
Authority
EP
European Patent Office
Prior art keywords
core
ferrite
reactor coil
cross
sectional area
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 - Lifetime
Application number
EP91103237A
Other languages
German (de)
English (en)
Other versions
EP0445704A2 (fr
EP0445704A3 (en
Inventor
Paul Dr. Dipl.-Ing. Grohs
Uwe Ing. Grad. Hartmann
Roman Dipl.-Ing. Schichl (Fh)
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 EP0445704A2 publication Critical patent/EP0445704A2/fr
Publication of EP0445704A3 publication Critical patent/EP0445704A3/de
Application granted granted Critical
Publication of EP0445704B1 publication Critical patent/EP0445704B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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

Definitions

  • the invention relates to an oscillating throttle according to the introductory part of patent claim 1.
  • High-pressure metal vapor lamps require a high voltage to ignite the arc, which can be about 200 times or more the operating voltage.
  • This ignition voltage is generated in a known manner at high frequency by a series resonant circuit from an oscillating choke according to the introductory part of patent claim 1 and an oscillating circuit capacitor, the latter being connected in parallel with the MHD lamp. In the event of resonance, the required ignition voltage is applied to this capacitor.
  • the resonance condition requires that the choke be of high quality in order to safely reach the ignition voltage.
  • this choke since this choke also limits the combustion current in normal operation, it must have a high inductance at the lamp-related, low frequency.
  • the cross-sectional area surrounded by the winding base of the coil former is constant over the length of the air gap and as large as in the area of the field line transition from the air into the ferrite Kerns (see Fig. 1).
  • the subclaims relate to preferred embodiments of the oscillating throttle according to claim 1.
  • FIG. 1 shows the structure of a conventional known oscillating choke.
  • a very large air gap 1 is provided within the winding, which is located on a coil former 2, the surface A of which is surrounded by the winding base 2a has a constant cross section over the length of the air gap 1.
  • the size of the cross section B of the surface 1a at the transition of the magnetic field lines from the air into the ferrite of the core 3 is chosen so that the permissible maximum saturation induction of the ferrite used is not exceeded.
  • the core 3 ' consists of two E-core halves 3a' each with a middle leg 3c 'shorter than the outer legs 3b'.
  • the middle legs 3c 'of the core halves 3a' protrude into a coil former 2 'and leave an air gap 1' between them.
  • the cross-sectional area A enclosed by the winding base 2a 'of the coil former 2' is reduced in the area of the air gap 1 'compared to the cross-sectional area B in the area of the field line exit from the air into the ferrite of the core 3', the latter cross-sectional area B being so large that the associated induction just does not bring the ferrite into saturation.
  • Fig. 3 shows an embodiment of the oscillating throttle according to the invention, in which the shear is increased so that a central leg can be completely dispensed with in the core 3 ′′.
  • the ferrite core 3 ′′ now only consists of a frame that increases the permeability and bundles the outer field lines, as a result of which a magnetic shielding function is achieved.
  • a frame construction as in FIG. 3 can also be used in accordance with FIG. 4 for the realization of an oscillating throttle of the type in FIG. 2.
  • the short middle leg sections 3c 'of the core 3' present in the oscillating choke according to FIG. 2 to increase the permeability are inserted here in addition to the ferrite frame 3 '''as individual pieces 3e''' made of ferrite into the coil former 2 '''.
  • the advantage of the frame construction is that the volume of the coil is reduced by higher core outer legs (Fig. 5) with the same cross-section, and that a good magnetic Shielding is achieved.
  • the shielding effect can be further improved in that the ferrite frame core 3 ′′, 3 ′′ ′′ consists of one piece and thus has no air gap as such.
  • the coil body 2 ', 2' ', 2' '' is expediently constructed in chamber technology, as shown in the drawing.
  • the cross-sectional area enclosed by the bobbin winding base continuously decreases from the ends of the air gap to the center thereof. It is particularly advantageous if the cross-sectional decrease is adapted to the course of the field lines.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)

Claims (6)

  1. Bobine de résonance, dont le noyau de ferrite (3';3'';3''') comporte un entrefer (1';1'';1''') dans la joue du corps de bobine (2';2'';2'''), notamment pour faire fonctionner des lampes à vapeur métallique sous haute pression, qui opèrent avec un courant de décharge à basse fréquence et dont la tension d'amorçage est produite à haute fréquence, caractérisée par le fait que la surface en coupe transversale (A), qui est entourée par la base de l'enroulement (2a';2a'';2a''') du corps de bobine (2';2'';2'''), est réduite dans la zone de l'entrefer (1';1'';1''') par rapport à la surface en coupe transversale (B) dans la joue du passage des lignes de champ de l'air dans la ferrite du noyau (3';3'';3'''), la surface en coupe transversale (B) indiquée en dernier lieu étant si grande que l'induction associée n'amène justement pas encore pas la ferrite à saturation.
  2. Bobine de résonance suivant la revendication 1, caractérisée par le fait que le corps de bobine (2';2'';2''') est subdivisé en chambres.
  3. Bobine de résonance suivant la revendication 1 ou 2, caractérisée par le fait que le noyau (3') est en forme de E.
  4. Bobine de résonance suivant la revendication 1 ou 2, caractérisée par le fait que le noyau est en forme de U.
  5. Bobine de résonance suivant la revendication 1 ou 2, caractérisée par le fait que le noyau (3'',3''') est sous forme de cadre.
  6. Bobine de résonance suivant la revendication 5, caracterisée par le fait que des pièces en ferrite (3e''') sont introduites, en plus du noyau en forme de cadre (3'''), dans le corps de bobine (2''').
EP91103237A 1990-03-07 1991-03-04 Bobine de réactance, en particulier pour la commande de lampes à vapeur métallique sous haute pression Expired - Lifetime EP0445704B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4007148 1990-03-07
DE4007148A DE4007148A1 (de) 1990-03-07 1990-03-07 Volumenoptimierte schwingdrossel fuer hohe aussteuerung und hohe guete

Publications (3)

Publication Number Publication Date
EP0445704A2 EP0445704A2 (fr) 1991-09-11
EP0445704A3 EP0445704A3 (en) 1992-08-12
EP0445704B1 true EP0445704B1 (fr) 1993-11-03

Family

ID=6401603

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91103237A Expired - Lifetime EP0445704B1 (fr) 1990-03-07 1991-03-04 Bobine de réactance, en particulier pour la commande de lampes à vapeur métallique sous haute pression

Country Status (2)

Country Link
EP (1) EP0445704B1 (fr)
DE (2) DE4007148A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4010473A1 (de) * 1990-03-31 1991-10-02 Vogt Electronic Ag Drossel-trafokombination zum betreiben von metalldampfhochdruck (mhd)-lampen aus bordnetzen von fahrzeugen

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE922423C (de) * 1942-08-21 1955-01-17 Aeg Transformator oder Drosselspule mit im oberen Teil stark abgeflachter Strom-Spannungs-Kennlinie
FR2077445B1 (fr) * 1969-04-14 1973-07-13 Ibm France
DE2143037A1 (de) * 1971-08-27 1973-03-01 Joseph Induktives element
US4298853A (en) * 1980-03-27 1981-11-03 General Electric Company Compact high voltage shunt reactor
DE3129381A1 (de) * 1981-07-25 1983-02-10 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Schaltnetzteil-transformator, insbesondere fuer einen fernsehempfaenger
JPS5922305A (ja) * 1982-07-28 1984-02-04 Toshiba Electric Equip Corp 高周波用漏れ変圧器
JPH01140613A (ja) * 1987-11-26 1989-06-01 Matsushita Electric Works Ltd 高周波用チョークコイル

Also Published As

Publication number Publication date
EP0445704A2 (fr) 1991-09-11
DE59100540D1 (de) 1993-12-09
DE4007148A1 (de) 1991-09-12
DE4007148C2 (fr) 1992-07-02
EP0445704A3 (en) 1992-08-12

Similar Documents

Publication Publication Date Title
DE19603779C2 (de) Drosselspule
EP0629311B1 (fr) Bobine pour un transformeur haute tension
DE10260246B4 (de) Spulenanordnung mit veränderbarer Induktivität
EP1405322B1 (fr) Bobine a inductance variable
DE19728667A1 (de) Hochspannungstransformator
EP2546842A2 (fr) Bobine destinée à la limitation du courant
DE3833916C2 (fr)
DE4117288A1 (de) Hochspannungs-zuenduebertrager zum zuenden und betreiben von wechselstrom-hochdruck-gasentladungslampen in kraftfahrzeugen
EP0445704B1 (fr) Bobine de réactance, en particulier pour la commande de lampes à vapeur métallique sous haute pression
DE4227757A1 (de) Drosselvorrichtung fuer eine elektromagnetische reihe
EP0585597B1 (fr) Transformateur de ligne à haute tension pour un récepteur de télévision
DE2628524A1 (de) Hochspannungswicklung aus mehreren teilspulen fuer spannungswandler,
DE4311126C2 (de) Stromkompensierte Mehrfachdrossel in Kompaktbauweise
EP0320018A1 (fr) Bobine de réactance
DE4208706C2 (de) Zündspule für eine Zündanlage einer Brennkraftmaschine
EP0740318B1 (fr) Transformateur à haute tension pour un récepteur de télévision
DE3900286C2 (fr)
DE9015849U1 (de) Ferritkern
EP0451628A1 (fr) Combinaison d'inductance et transformateur pour alimenter des lampes à vapeur métalliques sous haute pression pour circuits de bord de voitures
EP0127119A1 (fr) Appareil électromagnétique pour circuit de puissance à haute fréquence, en particulier transformateur ou bobine réactance
DE2203210A1 (de) Transduktor
DE4008424C2 (fr)
DE2062013A1 (de) Verzögerungsleitung fur eine Höchst frequenzelektronenrohre
DE3144840A1 (de) Streufeldspartransformator
DE1613568C3 (de) Manie Ikern- Drosselspule

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): DE FR GB IT

17P Request for examination filed

Effective date: 19920229

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): DE FR GB IT

17Q First examination report despatched

Effective date: 19930326

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT

REF Corresponds to:

Ref document number: 59100540

Country of ref document: DE

Date of ref document: 19931209

ET Fr: translation filed
ITF It: translation for a ep patent filed
GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19940119

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20010227

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20010302

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20010530

Year of fee payment: 11

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020304

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20021001

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20020304

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20021129

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050304