EP0380582B1 - Drosselspule - Google Patents

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Publication number
EP0380582B1
EP0380582B1 EP88909509A EP88909509A EP0380582B1 EP 0380582 B1 EP0380582 B1 EP 0380582B1 EP 88909509 A EP88909509 A EP 88909509A EP 88909509 A EP88909509 A EP 88909509A EP 0380582 B1 EP0380582 B1 EP 0380582B1
Authority
EP
European Patent Office
Prior art keywords
core
cores
partial
air gap
choke coil
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
EP88909509A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0380582A1 (de
Inventor
Hanspeter Bitterli
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.)
RIEDI-JOKS Susanne
Original Assignee
RIEDI-JOKS Susanne
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 RIEDI-JOKS Susanne filed Critical RIEDI-JOKS Susanne
Publication of EP0380582A1 publication Critical patent/EP0380582A1/de
Application granted granted Critical
Publication of EP0380582B1 publication Critical patent/EP0380582B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • 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
    • H01F38/02—Adaptations of transformers or inductances for specific applications or functions for non-linear operation
    • H01F38/023—Adaptations of transformers or inductances for specific applications or functions for non-linear operation of inductances

Definitions

  • the present invention relates to a choke coil according to the preamble of patent claim 1.
  • Choke coils are used in practically all areas of electrical engineering, both in circuits where high electrical power is processed and in sound and high-frequency circuits. They are built differently depending on the application in terms of size, choice of core material, winding structure, magnetic circuit (e.g. with or without an air gap) etc.
  • the choke coil is designed for a specific working range, with a specific course of the inductance values as a function of the current, the choke coil is also used in vehicles such as trams, trolley buses, rail-bound railcars and Locomotives, the rough tolerance dimensioning already plays a role, since this mainly affects the geometric dimensions and the weight of the choke coil and causes problems that have to be solved.
  • the choke coil according to the invention should have a determinable course of the inductance values as a function of the current, and should therefore be optimally designed with regard to the electrical values, the geometric dimensions, and the weight.
  • the Swiss patent CH 293 283 discloses a choke coil with a magnetic circuit which is formed from two cores and a winding comprising the two cores.
  • One core has a rectangular BH characteristic and has no air gap.
  • the other core has an air gap, such that the magnetization characteristic of the entire magnetic circuit is composed of two approximately straight pieces of different inclinations.
  • the choke coil disclosed has a pronounced step-shaped BH characteristic curve, the induction practically increasing to the maximum value even in the presence of an extremely small field strength. Choke coils with areas where the induction changes strongly with only a small change in field strength (or current change) are particularly suitable for using circuits in a known manner Switch contacts to open and close without a switch fire.
  • Document CH 227 740 discloses a choke coil with a magnetic circuit comprising two toroidal cores without air gap, which are arranged concentrically isolated from one another and which also serves to prevent switching fires.
  • this choke coil too, a steep increase in induction with only a small change in current is desired.
  • Better values are achieved by arranging additional coils on the outer toroid and connecting them in series with main coils comprising both toroids.
  • Document CH 224 775 shows a switching arrangement consisting of a transformer and a switching choke in which the magnetic core of the choke is constructed from the same materials as in the aforementioned examples in order to obtain a rectangular BH characteristic with a small coercive force.
  • the magnetic circuit of the choke coil is coupled to the magnetic circuit of the transformer via a common winding.
  • This choke coil also has the task of preventing switching lights due to its markedly steep rise in induction with only a small change in current.
  • DE-OS 2 156 493 discloses a choke arrangement for connecting thyristors.
  • the main thing here is to limit an impermissibly high inrush current without causing vibrations with impermissibly high current and voltage peaks.
  • the choke arrangement is effective over a relatively short time range and then as a magnetically saturated choke, which is in the load circuit of the thyristors, for the remaining duty cycle of the thyristors is ineffective.
  • the desired current profile for the current limitation at the time of switching on the thyristors can be set by varying the number of turns, the core cross-sections, the quality of the core material and by different air gaps. The settings are made according to the switch-on characteristics and arrangements of the thyristors used.
  • the three partial choke coils are integrated into a choke arrangement, which at the same time has transformer properties, in such a way that two core packages are combined to form a sheath core, the middle leg of which is enclosed by the main winding in the thyristor main circuit, which is designed for the full load current.
  • An auxiliary winding which is terminated with a resistor, is present on an outer leg of one of the core packages and is magnetically coupled to the main winding.
  • choke coils according to the invention are shown in principle in various exemplary embodiments.
  • the individual designs serve to create certain inductance curves as a function of the current.
  • the physical background of their mode of action is also illustrated using various magnetization curves and inductance curves.
  • the basic structure and the functional principle of the choke coil according to the invention are explained in the following description. Furthermore, the embodiments shown are described and their modes of operation are explained.
  • the choke coil according to the invention is called delta-phi choke in the following.
  • the delta phi inductor Before going into detail about the basic structure and the mode of operation of the delta phi inductor, it should be said that it can be operated at least as a pure AC inductor and as a DC-magnetized inductor.
  • the basic structure of the delta-phi inductor in its simplest embodiment comprises at least two magnetically separated partial cores 1 and 2 with different magnetic characteristics and at least one winding A, which wraps around the two partial cores 1 and 2 together.
  • the delta phi inductor this is provided with further additional partial cores 3, ..., n and / or with further additional windings A1, ..., An; B; B1, ..., Bn; C; C1, ..., Cn; D; D1, ..., Dn; E; E1, ..., En.
  • the individual windings are to be connected additively or subtractively in series to winding branches, whereby, under certain conditions, parallel connection and / or the combined connection of individual windings and / or winding branches is also possible.
  • Additive series connection of two windings means that the magnetic induction generated by the current-carrying windings add up.
  • Subtractive series connection of two windings means that the magnetic induction generated by the current-carrying windings subtracts.
  • the course of the inductance as a function of the current can be determined over the entire current range. All inductance behavior of the inductor can be determined using this system.
  • the delta-phi inductor has two partial cores with different overall magnetic properties, the partial core 1 having no air gap and the partial core 2 being equipped with an air gap L2.
  • the winding A wraps around the two cores together.
  • the winding B wraps only around the partial core 1 and the winding C wraps around only the partial core 2.
  • FIG. 2 shows, in principle, a second delta-phi choke according to the invention in an expanded version with three partial cores 1, 2 and 4 with different overall magnetic properties, all partial cores being equipped with different air gaps L1, L2 and L4.
  • the winding A wraps around all three sub-cores together.
  • the winding C wraps around only the partial core 2 and the winding E wraps around only the partial core 4.
  • FIG. 3 shows in principle a third delta-phi choke according to the invention in an expanded version with three partial cores 1, 2 and 3 with different overall magnetic properties, all partial cores being equipped with different air gaps L1, L2 and L3.
  • the winding A wraps around the sub-cores 1 and 2 and the winding B wraps around the sub-cores 1 and 3.
  • a fourth delta phi choke according to the invention is shown in principle in an expanded version.
  • the delta-phi choke has three partial cores 1, 2 and 4 with different overall magnetic properties, all partial cores being equipped with different air gaps L1, L2 and L4.
  • the winding A wraps around the sub-cores 1 and 2
  • the winding B wraps around the sub-core 1
  • the winding C wraps around the sub-core 2 and 4
  • the winding E wraps around the sub-core 4.
  • FIG. 5 shows the basic structure of a fifth delta phi choke according to the invention with four partial cores 1, 2, 3 and 4 with different overall magnetic properties, all partial cores being equipped with different air gaps L1, L2, L3 and L4, and with five windings A. , B, C, D and E.
  • the winding A wraps around the partial cores 1, 2, 3 and 4
  • the winding B wraps around the partial core 1
  • the winding C wraps around the partial core 2
  • the winding D wraps around the partial core 3 and the winding E. wraps around the sub-core 4.
  • FIG. 6 shows the basic structure of a sixth delta phi choke according to the invention in an expanded version with four partial cores 1, 2, 3 and 4 with different overall magnetic properties, all partial cores being equipped with different air gaps L1, L2, L3 and L4, and with five windings A, B, C, D and E.
  • the winding A wraps around the sub-cores 1 and 2
  • the winding B wraps around the sub-cores 1 and 3
  • the winding C wraps around the sub-cores 2 and 4
  • the winding D wraps around the sub-core 3
  • the winding E wraps around the partial core 4.
  • the magnetic behavior of the partial cores and the inductance behavior of the delta-phi inductor can be strongly influenced by appropriate switching, additive and / or subtractive series connection, parallel connection or combined connection, the choice of the number of turns, the windings.
  • FIG. 7 shows the basic structure of a seventh delta-phi choke according to the invention in an expanded version with four partial cores 1, 2, 3 and 4 with different overall magnetic properties, all partial cores being equipped with different air gaps L1, L2, L3 and L4, and with five windings A, B, C, D and E.
  • the winding A wraps around the partial cores 1, 2 and 3
  • the winding B wraps around the partial core 1
  • the winding C wraps around the.
  • Partial cores 2 and 4 the winding D wraps around the partial core 3 and the winding E wraps around the partial core 4.
  • FIG. 10 shows a core divided into partial cores with different overall magnetic properties.
  • the different overall magnetic properties are achieved in that the partial core 1 has no air gap and the other partial cores have different air gaps.
  • the different overall magnetic properties can also and / or additionally be achieved by using materials with different magnetic properties, induction as a function of the field strength, as shown in FIG. 8.
  • the applicable air gap sections are shown in Figure 11.
  • the influence of the air gap section (s) on the magnetic properties of a core or a partial core, induction as a function of the flooding, is shown in FIG. 9.
  • the magnetic field lines scatter in the zones of the air gap. So that the partial cores do not influence each other magnetically, the individual partial cores must be spaced at least by the distance which corresponds to the largest adjacent air gap.
  • FIG. 12 shows the magnetization curves, induction as a function of the flow, of a delta phi choke according to the invention with two partial cores 1 and 2 with different overall magnetic properties, the partial core 1 having no air gap and the partial core 2 having an air gap.
  • FIG. 13 shows the magnetization curves, induction as a function of the flow, a delta-phi choke according to the invention with three partial cores 1, 2 and 3 or 4 with different overall magnetic properties, partial core 1 having a small air gap, partial core 2 having a larger air gap and Partial core 3 or partial core 4 has an even larger air gap.
  • FIG. 14 shows the magnetization curves, induction as a function of the flow, a delta-phi choke according to the invention with four partial cores 1, 2, 3 and 4 with different overall magnetic properties, partial core 1 having a small air gap, partial core 2 having a somewhat larger air gap, the partial core 3 has an even larger and the partial core 4 has a large air gap.
  • FIG. 15 shows the inductance curve, inductance as a function of the current, of a delta-phi inductor according to the invention with two partial cores.
  • FIG. 16 shows the inductance curve, inductance as a function of the current of a delta-phi inductor according to the invention with three partial cores.
  • FIG. 17 shows the inductance curve, inductance as a function of the current, of a delta-phi inductor according to the invention with four partial cores.
  • the step-shaped inductance behavior comes about because the partial cores are designed magnetically so that the partial core 1 first reaches the magnetic saturation point at a specific current, and the induction of the remaining partial cores 2, 3 and 4 are still in the magnetically unsaturated region at this particular current.
  • the partial core 2 reaches the magnetic saturation point with a further determined current and the induction of the partial cores 3 and 4 are still in the magnetically unsaturated region. This state, due to a further increase in current, is carried out until all partial cores are magnetically saturated.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
  • Magnetically Actuated Valves (AREA)
EP88909509A 1988-02-11 1988-11-17 Drosselspule Expired - Lifetime EP0380582B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH486/88A CH678773A5 (enrdf_load_html_response) 1988-02-11 1988-02-11
CH486/88 1988-02-11
PCT/CH1988/000214 WO1989007828A1 (en) 1988-02-11 1988-11-17 Choke coil

Publications (2)

Publication Number Publication Date
EP0380582A1 EP0380582A1 (de) 1990-08-08
EP0380582B1 true EP0380582B1 (de) 1995-02-01

Family

ID=4188113

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88909509A Expired - Lifetime EP0380582B1 (de) 1988-02-11 1988-11-17 Drosselspule

Country Status (7)

Country Link
EP (1) EP0380582B1 (enrdf_load_html_response)
JP (1) JPH02503251A (enrdf_load_html_response)
AT (1) ATE118115T1 (enrdf_load_html_response)
CH (1) CH678773A5 (enrdf_load_html_response)
DE (1) DE3852951D1 (enrdf_load_html_response)
RU (1) RU1838841C (enrdf_load_html_response)
WO (1) WO1989007828A1 (enrdf_load_html_response)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH065448A (ja) * 1992-06-22 1994-01-14 Matsushita Electric Ind Co Ltd チョークコイルおよび電源装置
JPH07297055A (ja) * 1994-04-26 1995-11-10 Matsushita Electric Ind Co Ltd チョークコイル
JP5249052B2 (ja) * 2007-01-24 2013-07-31 スミダコーポレーション株式会社 インダクタ
DE102010015410A1 (de) * 2010-04-19 2011-10-20 SUMIDA Components & Modules GmbH Induktives Bauelement mit variablen Kerneigenschaften und Verfahren zu deren Einstellung
EP2631920A1 (en) * 2012-02-27 2013-08-28 ABB Oy Integrated common mode and differential mode choke

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1952072A (en) * 1932-02-12 1934-03-27 Gen Electric Electrical instrument
CH227740A (de) * 1941-02-11 1943-06-30 Hermes Patentverwertungs Gmbh Anordnung zur Schliessung und Unterbrechung eines Wechselstromkreises.
CH224775A (de) * 1941-05-03 1942-12-15 Floris Dr Ing Koppelmann Schaltanordnung, bestehend aus Transformator und Schaltdrossel.
CH293283A (de) * 1944-11-02 1953-09-15 Licentia Gmbh Drosseleisenkern, insbesondere für Kontaktumformer.
CH537672A (de) * 1971-10-29 1973-05-31 Bbc Brown Boveri & Cie Schaltungsanordnung für die Thyristorbeschaltung von Hochspannungsventilen
JPS504524A (enrdf_load_html_response) * 1973-05-18 1975-01-17
JPS5792815A (en) * 1980-12-01 1982-06-09 Tohoku Metal Ind Ltd Choke coil
JPS59182514A (ja) * 1983-03-31 1984-10-17 Hitachi Metals Ltd チヨ−クコイル用磁心

Also Published As

Publication number Publication date
DE3852951D1 (de) 1995-03-16
JPH02503251A (ja) 1990-10-04
ATE118115T1 (de) 1995-02-15
EP0380582A1 (de) 1990-08-08
CH678773A5 (enrdf_load_html_response) 1991-10-31
RU1838841C (ru) 1993-08-30
WO1989007828A1 (en) 1989-08-24

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