EP2495742A1 - Bobine d'antiparasitage à compensation de courant résistant aux tensions élevées - Google Patents

Bobine d'antiparasitage à compensation de courant résistant aux tensions élevées Download PDF

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Publication number
EP2495742A1
EP2495742A1 EP12000413A EP12000413A EP2495742A1 EP 2495742 A1 EP2495742 A1 EP 2495742A1 EP 12000413 A EP12000413 A EP 12000413A EP 12000413 A EP12000413 A EP 12000413A EP 2495742 A1 EP2495742 A1 EP 2495742A1
Authority
EP
European Patent Office
Prior art keywords
core
coils
interference suppression
radio interference
suppression choke
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.)
Granted
Application number
EP12000413A
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German (de)
English (en)
Other versions
EP2495742B1 (fr
Inventor
Dietrich Erich Sekels
Stefan Becker
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.)
Sekels GmbH
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Sekels GmbH
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Publication date
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Publication of EP2495742A1 publication Critical patent/EP2495742A1/fr
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Publication of EP2495742B1 publication Critical patent/EP2495742B1/fr
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    • 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 a high-current resistant, current-compensated radio interference suppression choke with a self-contained core of a soft magnetic material, with at least two wound around the core coils and with the coils forming, guided in a filter circuit electrical conductors.
  • Such high-current, current-compensated radio interference suppression chokes are required at currents starting at one hundred amps and are known in practice, for example in diesel hybrid drives.
  • the self-contained core can be designed annular and, if necessary, have an air gap.
  • a high-current radio interference suppression choke in which the core is divided into two separate sections. On each of the sections a single coil is arranged. The coils thus extend over less than half the circumference of the core.
  • a disadvantage of the known radio interference suppression choke is that the structure of the suppression choke requires sufficient space for sufficient damping.
  • the described arrangement of the coils is asymmetrical and leads to a magnetic saturation of the core, especially at high currents. An enlargement of the core leads to a high space requirement and thus to high material costs.
  • the invention is based on the problem of further developing a radio interference suppression choke of the type mentioned at the beginning in such a way that it has a high damping and a particularly small footprint even at high current intensities.
  • the circumference of the core for the arrangement of the coils can be largely utilized at first.
  • the core can have particularly small dimensions.
  • the small dimensions lead to low production costs.
  • the windings of the coils can be arranged uniformly distributed over the entire circumference of the core.
  • the symmetry of the windings avoids partial saturation of the core at high currents. Thanks to the invention, a high impedance can be achieved via the frequency in DC applications, and thus an attenuation in the so-called common mode.
  • the RFI choke invention is particularly compact, when the portion of the core over which both coils are wound, more than half of the total circumference of the core corresponds. This design also leads to particularly low production costs of Funkfeststördrossel invention.
  • a particularly even distribution of the turns of the coils of the RFI choke according to the invention can be achieved easily if the portion of the core, over which both coils are wound, corresponds to almost the total length of the core. As a result of this design, the circumference of the core is used as far as possible to accommodate the coils.
  • the radio interference suppression choke invention is particularly simple in construction, when the electrical conductors of different coils are wound in parallel. With this design, the two electrical conductors before the winding can be structurally combined and wrap around the core. This also leads to a further reduction of the manufacturing costs of the radio interference suppression choke according to the invention.
  • a particularly compact construction of the radio interference suppression choke according to the invention can be achieved simply if the electrical conductors are wound in different positions around the core. As a result of this configuration, a multiple of the turns of the conductors can be arranged on the core in comparison to a single-layer winding, depending on the number of layers.
  • damping characteristics of Funkfeststrossrossel invention can be easily adjusted when the coils are composed of several, parallel or series-connected partial coils.
  • the interconnection of the partial coils allows many possibilities.
  • the conductors of different partial coils can be wound on different layers.
  • the conductors of partial coils of different coils can be wound in parallel on one layer and the other partial coils of the different coils on a different layer.
  • Heat is often generated during operation of the radio interference suppression choke, which must be dissipated. You could cool the radio interference suppression choke in a stream of air.
  • a particularly high cooling capacity can be achieved according to another advantageous embodiment of the invention, when the electrical conductors are formed as a waveguide.
  • a cooling medium such as cooling water or air, can promote through the waveguide and thus carry away the heat.
  • the electrical conductors are reliably held in their position according to another advantageous embodiment of the invention, when the electrical conductors are solid.
  • the electrical conductors have a high intrinsic stability.
  • the electrical conductors are particularly flexible according to another advantageous embodiment of the invention, when the electrical conductors are designed multi-core.
  • FIG. 1 shows a switched between a Störsenke 1 and a source of interference 2 high-current, current-compensated Funkeststsstrossel 3.
  • the radio interference suppression choke 3 has an annular core 4 to which two electrical conductors a, b of two coils 5, 6 are wound.
  • the electrical conductors a, b lead from the interference sink 1 to the interference source 2.
  • a section 7, around which the conductors a, b are wound, corresponds to almost the entire length of the core 4.
  • the core 4 is shown in the illustrated embodiment without an air gap.
  • the core 4 may also have an air gap.
  • the core 4 can also be designed differently from the illustrated annular design rectangular or the like.
  • FIG. 2a shows the electrical conductors a, b, the radio interference suppression choke 3 off FIG. 1 , It can be seen that these are guided parallel next to each other.
  • FIG. 2b illustrates in a plan view of a stretched representation of the portion 7, around which the conductors are wound a, b, the parallel winding of the conductors a, b.
  • FIG. 3 shows an alternative arrangement of electrical conductors a, b for winding the coils 5, 6 of the radio interference suppression choke 3 FIG. 1 , It can be seen here that the conductors a, b are twisted. These twisted conductors a, b can be wrapped around the core 4 of the radio interference suppression choke 3 FIG. 1 wrap.
  • FIG. 4 shows a high-current resistant, current-compensated radio interference suppression choke 8 with arranged on different layers electrical conductors a, b.
  • the conductors a, b are different for different coils 9, 10 Layers and thus wound around a core 11 at different distances.
  • the conductors a, b are as in the embodiment of FIG. 1 over a over almost the entire length of the core extending portion 12 is wound.
  • the spacing of the layers is identified by the reference numeral 13.
  • FIG. 5 shows the core 11 of the radio interference suppression choke 8 FIG. 4 in an extended view of section 12 over which electrical conductors a, b are wound. It can be seen here that the conductor a of the first coil 9 is wound directly onto the core 11 and the conductor b of the second coil 10 is wound around the first coil 9. Thus, the diameter of the conductor a of the first coil 9 in conjunction with an insulation, not shown, of the conductor a, b determines the distance 13 of the layers of the coils 9, 10th
  • FIG. 6 shows a multi-layer interconnection of several, parallel-connected partial coils 14-17 of coils 18, 19 in a stretched representation of a portion of a core 20 of another embodiment of a radio interference choke 21.
  • the individual conductors a - d of the partial coils 14-17 are each on one layer wrapped the core 20. To illustrate the winding, the individual conductors are marked on each turn of the coils.
  • FIG. 7 shows a further embodiment of a radio interference suppression choke 22 with a multi-layer interconnection of a plurality of parallel-connected sub-coils 23-26 of coils 27, 28 in a stretched representation of a portion of a core 29.
  • the individual conductors a - d wound over different layers relative to the core 29 and interconnected are the individual conductors a - d wound over different layers relative to the core 29 and interconnected.
  • FIG. 8 shows the course of the nominal inductance on the current strength of the radio interference suppression chokes 3, 8, 21, 22 from the FIGS. 1 to 7 to a prior art RF choke in which the core is divided into two sections and a single coil is disposed on each of the sections. Furthermore, in FIG. 9 the course of the leakage inductance on the current strength of the radio interference suppression choke 3, 8, 21, 22 from the FIGS. 1 to 7 compared with a prior art shown.
  • B-fields induced in a current-compensated RFI choke are compensated for in the core.
  • a large part of the corresponding H field of the windings enters into the polarization of the core material.
  • a small part of the H-field closes over the stray portion of the magnetic circuit.
  • the core material is polarized asymmetrically.
  • the asymmetries are not important. However, these asymmetries lead to partially very different polarizations of the core material and thus to local saturations of the core material. This effect becomes more pronounced the higher permeable the core material used.
  • the geometry of the magnetic Circle is not decisive, but the way of coupling the H-field of the winding into the core material. Particularly at high currents above 100 amperes, the asymmetries lead to partial saturation of the core and thus to the fact that the attenuation of the current-compensated RFI choke is impaired. This effect also occurs more strongly the higher the permeability of the magnetic circuit.
  • highly permeable materials are used in order to achieve the required impedance with low numbers of turns and thus with low copper losses.
  • the in the FIGS. 1 to 7 described winding structure of the radio interference suppression chokes 3, 8, 21, 22 is characterized in that the windings are evenly and thus scattered low over the circumference of the core 4, 11, 20, 29 distributed. The more the windings remain symmetrical, the more the partial saturation of the core 4, 11, 20, 29 at high currents can be avoided. In this case, the insulation requirements of the electrical conductors a - d in the winding structure are to be observed.
  • HSKD high-current-compensated RFI suppression choke
  • I zul ⁇ ⁇ i gr L H L ⁇
  • a high damping of the differential currents with simultaneously high permissible currents can only be achieved by a small winding leakage inductance.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Filters And Equalizers (AREA)
EP12000413.0A 2011-02-25 2012-01-24 Bobine d'antiparasitage à compensation de courant résistant aux tensions élevées Active EP2495742B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202011003256U DE202011003256U1 (de) 2011-02-25 2011-02-25 Hochstromfeste, stromkompensierte Funkentstördrossel

Publications (2)

Publication Number Publication Date
EP2495742A1 true EP2495742A1 (fr) 2012-09-05
EP2495742B1 EP2495742B1 (fr) 2016-03-30

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP12000413.0A Active EP2495742B1 (fr) 2011-02-25 2012-01-24 Bobine d'antiparasitage à compensation de courant résistant aux tensions élevées

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Country Link
EP (1) EP2495742B1 (fr)
DE (1) DE202011003256U1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019200051A1 (de) * 2019-01-04 2020-07-09 Rolls-Royce Deutschland Ltd & Co Kg Luftspule für einen Multilevelkonverter

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013112325B4 (de) * 2013-11-08 2024-02-08 Sma Solar Technology Ag Ringspule und Herstellungsverfahren für eine Ringspule
DE102020134147A1 (de) 2020-12-18 2022-06-23 Vacuumschmelze Gmbh & Co. Kg Induktives bauelement mit magnetkern und mittels additiver fertigung hergestellter wicklung

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3946349A (en) * 1971-05-03 1976-03-23 The United States Of America As Represented By The Secretary Of The Air Force High-power, low-loss high-frequency electrical coil
CA1210464A (fr) * 1982-12-24 1986-08-26 Patrick E. Burke Reacteurs sous enveloppe a liquide caloporteur et noyau en poudre de fer frittee
DE3621573A1 (de) * 1986-06-27 1988-01-07 Siemens Ag Stromkompensierte funkentstoerdrossel
EP0540958A1 (fr) * 1991-11-02 1993-05-12 Asea Brown Boveri Ag Inductance toroidale
US6507260B1 (en) * 2000-04-27 2003-01-14 Echelon Corporation Electrical transformer for use with twisted pair
US20100102900A1 (en) * 2006-11-06 2010-04-29 Antonio Poveda Lerma Process for reduction of the common mode current for power line communications equipment
WO2010120877A1 (fr) * 2009-04-17 2010-10-21 Molex Incorporated Tore à cannelures et élément de circuit et prise modulaire incorporant celui-ci

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2971173A (en) * 1957-11-25 1961-02-07 Hitoshi H Kajihara Wide band radio frequency transformers
DE2115574B2 (de) * 1971-03-31 1973-03-22 AEG-Elotherm GmbH, 5630 Remscheid-Hasten Leistungstransformator fuer mittelfrequenz
DE2602668C3 (de) * 1976-01-24 1978-11-09 Felten & Guilleaume Carlswerk Ag, 5000 Koeln Hochspannungsfester breitbandiger Übertrager für die Nachrichtentechnik
JP2005150198A (ja) * 2003-11-12 2005-06-09 Matsushita Electric Ind Co Ltd 通信用トランス

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3946349A (en) * 1971-05-03 1976-03-23 The United States Of America As Represented By The Secretary Of The Air Force High-power, low-loss high-frequency electrical coil
CA1210464A (fr) * 1982-12-24 1986-08-26 Patrick E. Burke Reacteurs sous enveloppe a liquide caloporteur et noyau en poudre de fer frittee
DE3621573A1 (de) * 1986-06-27 1988-01-07 Siemens Ag Stromkompensierte funkentstoerdrossel
EP0540958A1 (fr) * 1991-11-02 1993-05-12 Asea Brown Boveri Ag Inductance toroidale
US6507260B1 (en) * 2000-04-27 2003-01-14 Echelon Corporation Electrical transformer for use with twisted pair
US20100102900A1 (en) * 2006-11-06 2010-04-29 Antonio Poveda Lerma Process for reduction of the common mode current for power line communications equipment
WO2010120877A1 (fr) * 2009-04-17 2010-10-21 Molex Incorporated Tore à cannelures et élément de circuit et prise modulaire incorporant celui-ci

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019200051A1 (de) * 2019-01-04 2020-07-09 Rolls-Royce Deutschland Ltd & Co Kg Luftspule für einen Multilevelkonverter

Also Published As

Publication number Publication date
EP2495742B1 (fr) 2016-03-30
DE202011003256U1 (de) 2012-05-30

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