NL7811481A - TRANSFORMER WITH AIR SLOT. - Google Patents
TRANSFORMER WITH AIR SLOT. Download PDFInfo
- Publication number
- NL7811481A NL7811481A NL7811481A NL7811481A NL7811481A NL 7811481 A NL7811481 A NL 7811481A NL 7811481 A NL7811481 A NL 7811481A NL 7811481 A NL7811481 A NL 7811481A NL 7811481 A NL7811481 A NL 7811481A
- Authority
- NL
- Netherlands
- Prior art keywords
- air gaps
- air gap
- ferromagnetic
- partial air
- partial
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F3/00—Cores, Yokes, or armatures
- H01F3/10—Composite arrangements of magnetic circuits
- H01F3/14—Constrictions; Gaps, e.g. air-gaps
-
- 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
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
- H01F27/346—Preventing or reducing leakage fields
-
- 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
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
- H01F2027/348—Preventing eddy currents
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Coils Or Transformers For Communication (AREA)
- Transformers For Measuring Instruments (AREA)
Description
V.V.
\ PHN 9284 N.V. Philips' Gloeilampenfabrieken te Eindhoven Transformator met luchtspleet\ PHN 9284 N.V. Philips' Incandescent light factories in Eindhoven Transformer with air gap
De uitvinding heeft betrekking op een inrichting met een ferromagnetische kern die een door tenminste een luchtspleet onderbroken magnetische kring vormt.The invention relates to a device with a ferromagnetic core which forms a magnetic circuit interrupted by at least one air gap.
5 Een voorbeeld van een dergelijke inrichting is een transduktor zoals beschreven is in het Duitse Offenlegungsschrift 1 936 627. Ook andere inrichtingen zoals transformatoren en smoorspoelen bevatten in vele gevallen een door een luchtspleet onderbroken ferro-10 magnetische kern.An example of such a device is a transducer as described in German Offenlegungsschrift 1 936 627. Other devices such as transformers and chokes often contain a ferro-magnetic core interrupted by an air gap.
Een bezwaar van zulke inrichtingen is, dat ter plaatse van de luchtspleet een magnetisch strooiveld optreedt, waarvan de zijdelingse uitbreiding groter is naarmate de luchtspleet wijder is. Dit verschijnsel is 15 vooral hinderlijk, wanneer zich in de onmiddellijke nabijheid van de inrichting onderdelen bevinden, die door een dergelijk magneetveld gestoord kunnen worden en ook wanneer de kern ter plaatse van de luchtspleet omgeven is door een uit folie gewikkelde spoel. In het 20 laatste geval veroorzaakt het strooiveld wervelstroom- verliezen in de folie.A drawback of such devices is that a magnetic stray field occurs at the location of the air gap, the lateral extension of which is larger as the air gap is wider. This phenomenon is particularly annoying when there are parts in the immediate vicinity of the device which can be disturbed by such a magnetic field and also when the core is surrounded at the location of the air gap by a foil-wound coil. In the latter case, the stray field causes eddy current losses in the foil.
De uitvinding heeft tot doel de zijdelingse uitbreiding van het strooiveld ter plaatse van de luchtspleet aanzienlijk te beperken. Daartoe heeft de 25 inrichting volgens de uitvinding het kenmerk, dat de luchtspleet is verdeeld in tenminste twee partiële luchtspleten, die gevuld zijn met een niet-ferromagnetisch vast materiaal en die magnetisch in serie geschakeld zijn door middel van schijfjes ferromagnetisch materiaal.The object of the invention is to considerably limit the lateral extension of the stray field at the location of the air gap. For this purpose the device according to the invention is characterized in that the air gap is divided into at least two partial air gaps, which are filled with a non-ferromagnetic solid material and which are connected in series magnetically by means of discs of ferromagnetic material.
De partiële luchtspleten samen vormen de totale \ 7811431 t ., * - 2 - r PHN 9284 wijdte van. de luchtspleet. Elke partiële luchtspleet op zich kan zo nauw gekozen worden, dat het strooiveld geen zijdelingse uitbreiding van betekening heeft.The partial air gaps together form the total width of PHN 9284. the air gap. Each partial air gap in itself can be chosen so narrowly that the stray field has no lateral extension of service.
Het niet-ferromagnetische vaste materiaal 5 bestaat bij voorkeur uit een mengsel van een lijm met glasdeeltjes. De schijfjes ferromagnetisch materiaal kunnen dan eenvoudig met deze lijm op elkaar gekleefd worden, waarbij de afmetingen van de glasdeeltjes de wijdte van de partiële luchtspleten bepalen.The non-ferromagnetic solid material 5 preferably consists of a mixture of an adhesive with glass particles. The discs of ferromagnetic material can then simply be glued together with this adhesive, the dimensions of the glass particles determining the width of the partial air gaps.
10 De uitvinding zal nader worden toegelicht aan de hand van de tekening. Hierin toontThe invention will be further elucidated with reference to the drawing. Herein shows
Fig. 1 een zijaanzicht van een transformator met een ferromagnetische kern met luchtspleet,Fig. 1 is a side view of a transformer with a ferromagnetic core with an air gap,
Fig. 2 een gedetailleerde weergave in door-15 snede van het gedeelte van de kern waar zich de lucht spleet bevindt, waarbij de maatregelen volgens de uitvinding niet zijn toegepast, enFig. 2 a detailed sectional view of the part of the core where the air gap is located, wherein the measures according to the invention have not been applied, and
Fig. 3 hetzelfde kerngedeelte uitgevoerd volgens de uitvinding., 20 Fig. 1 toont een transformator met een ferro magnetische kern 1, bijvoorbeeld van ferriet, een primaire spoel 3 gewikkeld uit aluminiumfolie en een secundaire spoel 5» gewikkeld uit koperdraad. Ter plaatse van de primaire spoel 3 is de kern 1- onderbroken door 25 een luchtspleet 7 (gestippeld getekend).Fig. 3 shows the same core section according to the invention. FIG. 1 shows a transformer with a ferro-magnetic core 1, for example of ferrite, a primary coil 3 wound from aluminum foil and a secondary coil 5 »wound from copper wire. At the location of the primary coil 3, the core 1 is interrupted by an air gap 7 (drawn in dotted lines).
Fig. 2 toont de luchtspleet 7 met zijn naaste omgeving in detail voor een bekende transformator. Ter plaatse van de luchtspleet 7 treedt een magnetisch strooiveld op, waarvan de krachtlijnen 9 gestippeld 30 getekend zijn. De zijdelingse uitbreiding van dit strooiveld is zo groot, dat de krachtlijnen 9 verscheidene lagen 11 van de foliespoel 3 doorsnijden. Hierdoor treden in de folie van de spoel 3 wervelstroomverliezen op.Fig. 2 shows the air gap 7 with its immediate environment in detail for a known transformer. At the location of the air gap 7, a magnetic stray field occurs, the lines of force 9 of which are drawn in dotted lines. The lateral extension of this stray field is so great that the lines of force 9 intersect several layers 11 of the film reel 3. As a result, 3 eddy current losses occur in the foil of the coil.
35 Fig. 3 toont de situatie bij een transformator volgens de uitvinding. De luchtspleet 7 is verdeeld in T 7811481FIG. 3 shows the situation with a transformer according to the invention. The air gap 7 is divided into T 7811481
VV
Claims (2)
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL7811481A NL7811481A (en) | 1978-11-22 | 1978-11-22 | TRANSFORMER WITH AIR SLOT. |
FR7924244A FR2442496A1 (en) | 1978-11-22 | 1979-09-28 | INTERFACE TRANSFORMER |
IT7923178U IT7923178V0 (en) | 1978-11-22 | 1979-11-19 | TRANSFORMER WITH AN AIR SPACE. |
JP14904079A JPS5577115A (en) | 1978-11-22 | 1979-11-19 | Transformer having air gap |
IT27407/79A IT1163733B (en) | 1978-11-22 | 1979-11-19 | TRANSFORMER PRESENTING AN AIR SPACE |
GB7939982A GB2037089A (en) | 1978-11-22 | 1979-11-19 | Ferromagnetic core having a gap |
DE19792946734 DE2946734A1 (en) | 1978-11-22 | 1979-11-20 | TRANSFORMER WITH AIR GAP |
ES1979253561U ES253561Y (en) | 1978-11-22 | 1979-11-20 | A DEVICE THAT HAS A FERROMAGNETIC NUCLEUS FORMING A MAGNETIC CIRCUIT INTERRUPTED BY AT LEAST ONE ENTREHIE-RRO |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL7811481A NL7811481A (en) | 1978-11-22 | 1978-11-22 | TRANSFORMER WITH AIR SLOT. |
NL7811481 | 1978-11-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
NL7811481A true NL7811481A (en) | 1980-05-27 |
Family
ID=19831933
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NL7811481A NL7811481A (en) | 1978-11-22 | 1978-11-22 | TRANSFORMER WITH AIR SLOT. |
Country Status (7)
Country | Link |
---|---|
JP (1) | JPS5577115A (en) |
DE (1) | DE2946734A1 (en) |
ES (1) | ES253561Y (en) |
FR (1) | FR2442496A1 (en) |
GB (1) | GB2037089A (en) |
IT (2) | IT1163733B (en) |
NL (1) | NL7811481A (en) |
Families Citing this family (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3828985C1 (en) * | 1988-08-26 | 1989-09-14 | Grundig E.M.V. Elektro-Mechanische Versuchsanstalt Max Grundig Hollaend. Stiftung & Co Kg, 8510 Fuerth, De | |
JP2714997B2 (en) * | 1990-10-02 | 1998-02-16 | ティーディーケイ株式会社 | Coil device |
JP2699020B2 (en) * | 1990-10-02 | 1998-01-19 | ティーディーケイ株式会社 | Coil device |
JP2699021B2 (en) * | 1990-10-02 | 1998-01-19 | ティーディーケイ株式会社 | Coil device |
DE69120986T2 (en) * | 1990-02-27 | 1996-12-12 | Tdk Corp | Coil arrangement |
US6211765B1 (en) | 1990-02-27 | 2001-04-03 | Tdk Corporation | Coil device |
US5210514A (en) * | 1990-08-17 | 1993-05-11 | Tdk Corporation | Coil device |
US5789907A (en) * | 1991-03-29 | 1998-08-04 | Top Gulf Coast Corporation | Variable impedence transformer |
US5376912A (en) * | 1992-03-12 | 1994-12-27 | Casagrande; Serge | Combined transformer and inductor |
DE19833190A1 (en) * | 1998-07-23 | 2000-01-27 | Bayerische Motoren Werke Ag | ignition coil |
US6417753B1 (en) | 2000-02-17 | 2002-07-09 | Koninklijke Philips Electronics N.V. | Planar magnetic device without center core leg |
DE10141343A1 (en) * | 2001-08-23 | 2003-03-13 | Siemens Ag | High frequency device, used in the production of telecommunications systems, comprises a magnetic core having thin layers made from soft magnetic material |
EP1501106B1 (en) | 2003-07-23 | 2011-02-02 | STS, Spezial-Transformatoren-Stockach GmbH & Co. | Ferrite core for inductive element |
DE602005016535D1 (en) * | 2004-03-29 | 2009-10-22 | Dartmouth College | D FOR MAGNETIC COILS ON CORE WITH GASES |
DE102006026466B3 (en) * | 2006-06-01 | 2007-12-06 | Siemens Ag | Inductive electrical element particularly transformer, has winding conductor, particularly formed as filament, which is wounded partly around ferromagnetic core for formation of winding |
US7746211B2 (en) * | 2006-12-27 | 2010-06-29 | General Electric Company | Lamp transformer assembly |
US7746001B2 (en) * | 2007-04-27 | 2010-06-29 | Plasma Technics, Inc. | Plasma generator having a power supply with multiple leakage flux coupled transformers |
MY155185A (en) * | 2009-06-15 | 2015-09-15 | Univ Northwest | Segmented core transformer |
DE202011004121U1 (en) * | 2011-03-17 | 2011-05-26 | Roland Pechan GmbH & Co. KG, 04827 | Inductive passive component, in particular throttle |
EP2528069B1 (en) * | 2011-05-26 | 2013-12-18 | Franc Zajc | Multi gap inductor core, multi gap inductor, transformer and corresponding manufacturing method |
US9287030B2 (en) | 2011-05-26 | 2016-03-15 | Franc Zajc | Multi gap inductor core |
DE102013225875A1 (en) * | 2013-12-13 | 2015-07-02 | Siemens Aktiengesellschaft | Guiding a magnetic flux |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR494559A (en) * | 1917-11-20 | 1919-09-12 | Westinghouse Electric Corp | Force limiting reactance coils |
NL23169C (en) * | 1927-03-23 | |||
US3187284A (en) * | 1957-06-24 | 1965-06-01 | Philips Corp | Variable inductance device |
DE1245487B (en) * | 1963-05-24 | 1967-07-27 | Westinghouse Electric Corp | Process for the production of a laminated iron core for transformers and reactors |
FR1559121A (en) * | 1968-01-26 | 1969-03-07 | ||
CH483707A (en) * | 1968-06-10 | 1969-12-31 | Bbc Brown Boveri & Cie | Three-phase choke coil with magnetic core |
DE2130773A1 (en) * | 1970-07-02 | 1972-04-13 | Iskra Zd Za Avtomatizacijo V Z | Adhesive for gluing with a precisely determined distance |
DE2718274A1 (en) * | 1977-04-25 | 1978-10-26 | Vogt Gmbh & Co Kg | PROCESS FOR PRODUCING DEFINED AIR GAP IN MAGNETIC CIRCLES |
-
1978
- 1978-11-22 NL NL7811481A patent/NL7811481A/en not_active Application Discontinuation
-
1979
- 1979-09-28 FR FR7924244A patent/FR2442496A1/en not_active Withdrawn
- 1979-11-19 IT IT27407/79A patent/IT1163733B/en active
- 1979-11-19 GB GB7939982A patent/GB2037089A/en not_active Withdrawn
- 1979-11-19 JP JP14904079A patent/JPS5577115A/en active Pending
- 1979-11-19 IT IT7923178U patent/IT7923178V0/en unknown
- 1979-11-20 ES ES1979253561U patent/ES253561Y/en not_active Expired
- 1979-11-20 DE DE19792946734 patent/DE2946734A1/en not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
IT1163733B (en) | 1987-04-08 |
FR2442496A1 (en) | 1980-06-20 |
DE2946734A1 (en) | 1980-06-04 |
ES253561Y (en) | 1981-06-01 |
IT7923178V0 (en) | 1979-11-19 |
JPS5577115A (en) | 1980-06-10 |
IT7927407A0 (en) | 1979-11-19 |
ES253561U (en) | 1980-12-16 |
GB2037089A (en) | 1980-07-02 |
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A1B | A search report has been drawn up | ||
BV | The patent application has lapsed |