EP0211125A1 - Für Erregerspulen mit ferromagnetischen Kernen geeignete Anordnung zur Dämpfung von Stossspannungen beim Abschalten und Spulen mit solcher Dämpfungsanordnung - Google Patents

Für Erregerspulen mit ferromagnetischen Kernen geeignete Anordnung zur Dämpfung von Stossspannungen beim Abschalten und Spulen mit solcher Dämpfungsanordnung Download PDF

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Publication number
EP0211125A1
EP0211125A1 EP85401596A EP85401596A EP0211125A1 EP 0211125 A1 EP0211125 A1 EP 0211125A1 EP 85401596 A EP85401596 A EP 85401596A EP 85401596 A EP85401596 A EP 85401596A EP 0211125 A1 EP0211125 A1 EP 0211125A1
Authority
EP
European Patent Office
Prior art keywords
reducing
coils
ferromagnetic cores
coil
surge voltages
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Withdrawn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
EP85401596A
Other languages
English (en)
French (fr)
Inventor
Gérard Michel René Jullien
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.)
Safran Electronics and Defense Cockpit Solutions SAS
Original Assignee
LEquipement et la Construction Electrique ECE
ECE SAS
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 LEquipement et la Construction Electrique ECE, ECE SAS filed Critical LEquipement et la Construction Electrique ECE
Priority to DE1985401596 priority Critical patent/DE211125T1/de
Priority to EP85401596A priority patent/EP0211125A1/de
Publication of EP0211125A1 publication Critical patent/EP0211125A1/de
Withdrawn legal-status Critical Current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
    • 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
    • H01F27/38—Auxiliary core members; Auxiliary coils or windings

Definitions

  • the invention relates to a device for attenuating breaking overvoltages for excitation coils with ferromagnetic core. It finds its application in particular in the field of electromagnetic relays and contactors used for example in aeronautics.
  • the object of the invention is to eliminate these drawbacks.
  • the device for attenuating breaking overvoltages is essentially characterized by the mounting, on the magnetic circuit, of at least one short-circuited turn embracing the entire magnetic flux which traverses this circuit, this turn being made of a non-magnetic material and good conductor of electricity.
  • the invention also relates to excitation coils with ferromagnetic cores, provided with such an attenuation device.
  • the coil comprises, conventionally, a magnetic circuit 1, with or without a fixed or variable air gap, and a winding generating magneto-motive force 2 arranged around a branch of the magnetic circuit 1, on an insulating carcass 3, this coil 2 being the seat of transient overvoltages.
  • a device for attenuating these transient overvoltages consisting of a solid torus 4.
  • This torus 4 which has been shown partially in section as having a section approximately square, may in fact have a section of any shape and it is made of a non-magnetic material and good conductor of electricity such as a metal or alloy (copper, silver, etc ).
  • the attenuation turn, designated here by 5 is constituted as before by a piece of non-magnetic material and conductive of electricity but strictly follows the shape of the support carcass 3 of FIG. 1.
  • the coil 5 is not itself insulating but special precautions are taken, when winding the winding 2 on this coil 5, to avoid direct metal contacts on metal between the winding wire 2 and the coil 5.
  • the dimensions of the torus 4 or the coil 5 are calculated according to the rules of the art, depending on the results sought.
  • the operation of the attenuation device according to the invention is apparent from the two comparative curves of FIG. 3.
  • the curve on the left represents, as a function of time t (plotted on the abscissa), the variation of the voltage U (plotted on the ordinate) in the winding 2 during a cut in the supply circuit in the case of FIG. 1, but without the attenuation torus 4 according to the invention.
  • the curve on the right represents, on identical abscissae and the same ordinates, the variation of the voltage U as a function of time, under the same circumstances but with addition in accordance with the invention of the torus 4 (figure 1) or of the coil 5 (figure 2). It can be seen that the attenuation device reduces the value of the maximum overvoltage as well as the duration of the overvoltage to approximately half.
  • the maximum overvoltage could thus be reduced, in absolute value, from 580 volts to 300 volts.
  • the reduction in the duration of the overvoltage is easily appreciated when we consider that, on the two curves, a division (between two vertical lines) of the abscissa axis corresponds to 40 microseconds in the example in question.
  • FIGS. 1 and 2 instead of a single attenuation turn as shown in FIGS. 1 and 2, one could for example provide two turns arranged in short circuit either individually or as a whole, and placed in particular on either side of the winding 2 .
EP85401596A 1985-08-06 1985-08-06 Für Erregerspulen mit ferromagnetischen Kernen geeignete Anordnung zur Dämpfung von Stossspannungen beim Abschalten und Spulen mit solcher Dämpfungsanordnung Withdrawn EP0211125A1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE1985401596 DE211125T1 (de) 1985-08-06 1985-08-06 Fuer erregerspulen mit ferromagnetischen kernen geeignete anordnung zur daempfung von stossspannungen beim abschalten und spulen mit solcher daempfungsanordnung.
EP85401596A EP0211125A1 (de) 1985-08-06 1985-08-06 Für Erregerspulen mit ferromagnetischen Kernen geeignete Anordnung zur Dämpfung von Stossspannungen beim Abschalten und Spulen mit solcher Dämpfungsanordnung

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP85401596A EP0211125A1 (de) 1985-08-06 1985-08-06 Für Erregerspulen mit ferromagnetischen Kernen geeignete Anordnung zur Dämpfung von Stossspannungen beim Abschalten und Spulen mit solcher Dämpfungsanordnung

Publications (1)

Publication Number Publication Date
EP0211125A1 true EP0211125A1 (de) 1987-02-25

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP85401596A Withdrawn EP0211125A1 (de) 1985-08-06 1985-08-06 Für Erregerspulen mit ferromagnetischen Kernen geeignete Anordnung zur Dämpfung von Stossspannungen beim Abschalten und Spulen mit solcher Dämpfungsanordnung

Country Status (2)

Country Link
EP (1) EP0211125A1 (de)
DE (1) DE211125T1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109390120A (zh) * 2017-08-04 2019-02-26 矢崎总业株式会社 尺寸减小的浪涌电压降低部件

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE383694C (de) * 1923-10-16 Hellmuth Beyer Einrichtung zur Verringerung der Streuung von Transformatoren
US2361542A (en) * 1941-05-07 1944-10-31 Bell Telephone Labor Inc Relay
FR947753A (fr) * 1946-06-14 1949-07-12 Acec Relais électromagnétique à déclenchement retardé
FR1251786A (fr) * 1960-03-22 1961-01-20 Paris & Du Rhone Perfectionnement aux régulateurs électro-magnétiques de tension ou d'intensité
BE746338A (fr) * 1970-02-20 1970-07-31 Signalisation Et Telephonie En Dispositif de temporisation commun a plusieurs relais electromagnetiques a courant continu,

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE383694C (de) * 1923-10-16 Hellmuth Beyer Einrichtung zur Verringerung der Streuung von Transformatoren
US2361542A (en) * 1941-05-07 1944-10-31 Bell Telephone Labor Inc Relay
FR947753A (fr) * 1946-06-14 1949-07-12 Acec Relais électromagnétique à déclenchement retardé
FR1251786A (fr) * 1960-03-22 1961-01-20 Paris & Du Rhone Perfectionnement aux régulateurs électro-magnétiques de tension ou d'intensité
BE746338A (fr) * 1970-02-20 1970-07-31 Signalisation Et Telephonie En Dispositif de temporisation commun a plusieurs relais electromagnetiques a courant continu,

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENTS ABSTRACTS OF JAPAN, vol. 8, no. 139 (E-253) [1576], 28 juin 1984; & JP - A - 59 50 505 (TOGAMI DENKI SEISAKUSHO K.K.) 23-03-1984 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109390120A (zh) * 2017-08-04 2019-02-26 矢崎总业株式会社 尺寸减小的浪涌电压降低部件
CN109390120B (zh) * 2017-08-04 2021-03-05 矢崎总业株式会社 尺寸减小的浪涌电压降低部件

Also Published As

Publication number Publication date
DE211125T1 (de) 1987-09-24

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Inventor name: JULLIEN, GERARD MICHEL RENE