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EP0989569A2 - Composant inductif avec un noyau en forme de baguette - Google Patents

Composant inductif avec un noyau en forme de baguette Download PDF

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Publication number
EP0989569A2
EP0989569A2 EP99203009A EP99203009A EP0989569A2 EP 0989569 A2 EP0989569 A2 EP 0989569A2 EP 99203009 A EP99203009 A EP 99203009A EP 99203009 A EP99203009 A EP 99203009A EP 0989569 A2 EP0989569 A2 EP 0989569A2
Authority
EP
European Patent Office
Prior art keywords
inductive component
current
winding
winding body
bed
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Withdrawn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
EP99203009A
Other languages
German (de)
English (en)
Other versions
EP0989569A3 (fr
Inventor
Manfred Albach
Eugen De Mol
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
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, Koninklijke Philips Electronics NV filed Critical Philips Corporate Intellectual Property GmbH
Publication of EP0989569A2 publication Critical patent/EP0989569A2/fr
Publication of EP0989569A3 publication Critical patent/EP0989569A3/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Withdrawn legal-status Critical Current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
    • 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
    • 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
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/2876—Cooling
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/26—Circuit arrangements in which the lamp is fed by power derived from DC by means of a converter, e.g. by high-voltage DC
    • H05B41/28—Circuit arrangements in which the lamp is fed by power derived from DC by means of a converter, e.g. by high-voltage DC using static converters
    • H05B41/282—Circuit arrangements in which the lamp is fed by power derived from DC by means of a converter, e.g. by high-voltage DC using static converters with semiconductor devices
    • H05B41/2821—Circuit arrangements in which the lamp is fed by power derived from DC by means of a converter, e.g. by high-voltage DC using static converters with semiconductor devices by means of a single-switch converter or a parallel push-pull converter in the final stage
    • H05B41/2822—Circuit arrangements in which the lamp is fed by power derived from DC by means of a converter, e.g. by high-voltage DC using static converters with semiconductor devices by means of a single-switch converter or a parallel push-pull converter in the final stage using specially adapted components in the load circuit, e.g. feed-back transformers, piezoelectric transformers; using specially adapted load circuit configurations
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F17/00—Fixed inductances of the signal type
    • H01F17/04—Fixed inductances of the signal type with magnetic core
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F5/00—Coils
    • H01F5/02—Coils wound on non-magnetic supports, e.g. formers

Definitions

  • the invention relates to an inductive component with a rod core and a winding body, in which current winding layers enclosing the rod core axis are embedded.
  • Rod core enclosing winding body to provide a bed for receiving the Has turns of a current winding.
  • the current turns embedded in this way lie concentric around the rod core axis.
  • the winding former is used in the manufacture of a such inductive component pushed onto the rod core, whereupon the application which connects current turns.
  • An example of a known rod core coil shows Fig. 5.
  • the invention has for its object the heating of the inductive component counteract.
  • the object is achieved in that the width of the innermost layer of current turns is smaller than the rod core length and that the width of the current winding layers is from the inside out increases outside.
  • the winding body bed is by the Current turns filled from the inside out, the current turns layers form.
  • the width of the current winding layers is in the direction parallel to the rod core axis measure up.
  • the reduction in heat loss achieved is due to the fact that in the outer (i.e. closest to the core ends) the innermost (i.e. the current winding positions closest to the rod core during a current flow a high magnetic field strength is generated by the current turns, which is too high Eddy current losses ("proximity" losses) leads.
  • proximity Eddy current losses
  • the rod core can lose heat emit directly into the surrounding air, which additionally heats up the component counteracts.
  • the winding body is preferably designed as a plastic injection molded part, so that winding bodies with any bed profiles inexpensive in mass production are producible.
  • the component according to the invention can be used with the realize the same number of current turns a higher inductance.
  • the configuration of the winding body There are various possibilities for the configuration of the winding body. Point the side surfaces of the winding body bed from the side of the current turns If you look at the convex profile, the heat loss is particularly high. In other configurations, the side surfaces of the Wrapper body shaped like a truncated cone outer surface, resulting in a simplified Producibility due to the simple winding bed profile on the other hand leads the side surfaces of the bobbin bed also one from the side of the current turns viewed from have a concave profile.
  • the invention also relates to a winding body with a winding body bed Inclusion of current winding layers consisting of concentric windings, their Width from the area to accommodate the innermost layers of current turns towards the area for receiving the outermost layers of current turns increases.
  • the inductive component is suitable both as a coil and as a transformer to become.
  • the inductive component 1 shown in Fig. 1 has a rod core 2, the one Winding body 3 carries.
  • the inductive component 1 is designed as a coil, however, the principle according to the invention is also readily applicable to transformers is applicable.
  • the winding body 3 forms a bed in which a winding with current turns 4 is embedded.
  • the winding body 3 consists of two shells 3a and 3b which are connected to a sleeve 3c, which in turn is pushed onto the rod core 2.
  • the current windings 4 form current winding layers, the width of which is determined by the profile of the Coil body bed is determined, what to do from the shape of the shells 3a and 3b of the Coil 3 depends
  • the width of the innermost current winding layer is smaller than that Length of the rod core 2.
  • the width of the current winding layers increases from the inside outside too.
  • the increase in the width of the current turns depends on the shape of the Shells 3a and 3b form lateral surfaces of the winding body bed.
  • Fig. 1 point the side surfaces of the wrap bed, i.e. shells 3a and 3b, one from the side the current windings 4 viewed from a convex profile.
  • the inductive so formed Component 1 heats up considerably less than when operating with alternating currents conventional inductive components with rod core, since eddy current losses are reduced are and in addition via the exposed ends of the rod core 2 heat to the ambient air can be delivered.
  • Figures 2 and 3 show configurations of the inductive component 1 with others Variants of the winding body 3.
  • the lateral surfaces of the winding body bed in the form of an outer truncated cone surface.
  • the lateral surfaces and thus the shells 3a and 3b are not curved.
  • the lateral surfaces of the winding body bed face from the side of the current turns 4 viewed from concave profile. From the current turn side considered, the shells 3a and 3b are curved outwards.
  • Fig. 4 shows a side view of the winding body 3 from the side of a rod core end considered.
  • the shell 3a and thus the corresponding side wall of the winding body bed has openings 5, which improve heat dissipation to the ambient air enable.
  • the shell 3b, not shown, is also designed.
  • the winding body 3 is preferably made of plastic and in an injection molding process manufactured so that any profile shapes of the winding body bed for mass production are inexpensive to manufacture.
  • the rod core 2 is in particular made of ferrite, but also other soft magnetic materials are considered as rod core material.
  • FIG. 5 shows a rod core coil 10 according to the prior art.
  • a winding body 12 is pushed on, which serves to receive current windings 13.
  • the profile of the winding body bed is rectangular.
  • the winding body encloses the Rod core 11 along its entire length.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Coils Of Transformers For General Uses (AREA)
  • General Induction Heating (AREA)
EP99203009A 1998-09-22 1999-09-15 Composant inductif avec un noyau en forme de baguette Withdrawn EP0989569A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19843415 1998-09-22
DE19843415A DE19843415A1 (de) 1998-09-22 1998-09-22 Induktives Bauelement mit einem Stabkern

Publications (2)

Publication Number Publication Date
EP0989569A2 true EP0989569A2 (fr) 2000-03-29
EP0989569A3 EP0989569A3 (fr) 2001-04-04

Family

ID=7881824

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99203009A Withdrawn EP0989569A3 (fr) 1998-09-22 1999-09-15 Composant inductif avec un noyau en forme de baguette

Country Status (4)

Country Link
US (1) US20020057169A1 (fr)
EP (1) EP0989569A3 (fr)
JP (1) JP2000114066A (fr)
DE (1) DE19843415A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005015006A1 (de) * 2005-04-01 2006-10-05 Vacuumschmelze Gmbh & Co. Kg Magnetkern

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE602005023426D1 (de) * 2004-03-25 2010-10-21 California Inst Of Techn Hybridisierungskettenreaktion
US7619861B2 (en) * 2004-09-29 2009-11-17 Pass & Seymour, Inc. Protective device having a thin construction
KR101261267B1 (ko) 2010-08-10 2013-05-07 김광식 무접점 충전기용 코일 및 이 코일을 제조하기 위한 권선 용구

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1272076B (de) * 1965-06-02 1968-07-04 Olle Eriksson Zusammenfaltbarer Spulenkoerper
DE1907660A1 (de) * 1969-02-15 1970-10-01 Licentia Gmbh Kleintransformator mit Hochspannungswicklung
LU80299A1 (de) * 1978-09-28 1979-06-01 N Gath Kern aus magnetisch leitfaehigem material mit spule und verfahren zu dessen herstellung
JPS5943775A (ja) * 1982-09-03 1984-03-10 Shinetsu Densen Kk 巻枠
US4588971A (en) * 1981-12-11 1986-05-13 Societe Nouvelle Transfix Electric transformer with annular coil forms

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1272076B (de) * 1965-06-02 1968-07-04 Olle Eriksson Zusammenfaltbarer Spulenkoerper
DE1907660A1 (de) * 1969-02-15 1970-10-01 Licentia Gmbh Kleintransformator mit Hochspannungswicklung
LU80299A1 (de) * 1978-09-28 1979-06-01 N Gath Kern aus magnetisch leitfaehigem material mit spule und verfahren zu dessen herstellung
US4588971A (en) * 1981-12-11 1986-05-13 Societe Nouvelle Transfix Electric transformer with annular coil forms
JPS5943775A (ja) * 1982-09-03 1984-03-10 Shinetsu Densen Kk 巻枠

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 008, no. 146 (M-307), 7. Juli 1984 (1984-07-07) & JP 59 043775 A (SHINETSU DENSEN KK), 10. März 1984 (1984-03-10) *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005015006A1 (de) * 2005-04-01 2006-10-05 Vacuumschmelze Gmbh & Co. Kg Magnetkern
US7782169B2 (en) 2005-04-01 2010-08-24 Vacuumschmelze Gmbh & Co. Kg Magnetic core
DE102005015006B4 (de) * 2005-04-01 2013-12-05 Vacuumschmelze Gmbh & Co. Kg Magnetkern

Also Published As

Publication number Publication date
DE19843415A1 (de) 2000-03-23
EP0989569A3 (fr) 2001-04-04
US20020057169A1 (en) 2002-05-16
JP2000114066A (ja) 2000-04-21

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