EP1417694B1 - Dispositif a electroaimant pour interrupteur - Google Patents

Dispositif a electroaimant pour interrupteur Download PDF

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Publication number
EP1417694B1
EP1417694B1 EP02794737A EP02794737A EP1417694B1 EP 1417694 B1 EP1417694 B1 EP 1417694B1 EP 02794737 A EP02794737 A EP 02794737A EP 02794737 A EP02794737 A EP 02794737A EP 1417694 B1 EP1417694 B1 EP 1417694B1
Authority
EP
European Patent Office
Prior art keywords
magnet
armature
yoke
circuit
pole
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
EP02794737A
Other languages
German (de)
English (en)
Other versions
EP1417694A1 (fr
Inventor
Volker Lang
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.)
Eaton Industries GmbH
Original Assignee
Moeller GmbH
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 Moeller GmbH filed Critical Moeller GmbH
Publication of EP1417694A1 publication Critical patent/EP1417694A1/fr
Application granted granted Critical
Publication of EP1417694B1 publication Critical patent/EP1417694B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/24—Electromagnetic mechanisms
    • H01H71/32—Electromagnetic mechanisms having permanently magnetised part
    • H01H71/321—Electromagnetic mechanisms having permanently magnetised part characterised by the magnetic circuit or active magnetic elements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
    • H01H47/22—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for supplying energising current for relay coil
    • H01H47/226—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for supplying energising current for relay coil for bistable relays
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/16—Magnetic circuit arrangements
    • H01H50/36—Stationary parts of magnetic circuit, e.g. yoke
    • H01H50/42—Auxiliary magnetic circuits, e.g. for maintaining armature in, or returning armature to, position of rest, for damping or accelerating movement
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00—Electromagnetic relays
    • H01H51/22—Polarised relays

Definitions

  • the invention relates to an electromagnet arrangement for a switch, in particular for a contactor, according to the preamble of the first claim.
  • the electrical and magnetic dimensioning of electromagnetic contactors is usually designed so that in the armature holding state, a low electrical power is applied (for example, DE 195 26 038 A1). This is already indicated because devices of this type are in the hold state for the longer period of operation.
  • the energy consumption in the hold state has the disadvantage that the device heats up. Typically, one counts on power losses in the hold state of a few watts. For vacuum switching devices, significantly higher outputs must be provided.
  • contactors or switches are combined in large numbers in a control cabinet, there is a need to take active measures for heat dissipation.
  • a magnet arrangement with circuit arrangement for generating pulse sequences for regulating the power is shown, for example, in DE 39 10 810 A1 or in DE 195 26 038 A1.
  • bypass circuit is formed parallel to the main magnetic circuit, which is also closable via the magnet armature and the bypass circuit consists of the two pole legs and a second pol direabgewandt arranged on the magnetic yoke yoke, which is interrupted by a remanence air gap.
  • the magnet arrangement (the magnetic yoke, the second yoke arc and the permanent magnet) is magnetically dimensioned so that the holding power - attracted to the magnet armature state - is applied solely by the permanent magnet without energizing the exciter winding.
  • the permanent magnet generates a first magnetic flux (MK1) through the pole legs and the armature and a second flux (MK2) through the second through the remanence flux splits.
  • MK1 first magnetic flux
  • MK2 second flux
  • the absolute value of both power flows is given by the state of charge of the permanent magnet.
  • the ratio of the power flows is determined by the sizing of the bypass circuit (including remanent air gap) and the distance of the armature.
  • the first magnetic flux (MK1) ensures that the magnet armature is held firmly on the pole faces. This armature holding force acts on the spring force contrary, which opens the magnet assembly in the absence or reduced magnetic force. In this case, the armature moves against stops, not shown.
  • the excess of the armature holding force, generated by the magnetic flux through the armature against the spring force is a measure of the susceptibility of the magnet assembly to external mechanical influences.
  • To open the magnet assembly should be sufficient minimum flooding (smallest current through the excitation coils depending on the number of turns), whereby the first magnetic flux is weakened so far that the spring force is sufficient to lift the armature. With the said small excitation current, a magnetic flux is generated, which is opposite to the magnetic flux through the armature and the virtually lossless urges the first magnetic flux in the bypass circuit substantially.
  • the magnetic yoke is U-shaped and consists of two L-shaped halves with a longer pole leg and a shorter transverse leg, wherein each pole leg faces the contact surfaces of the magnet armature.
  • the permanent magnet is clamped in the middle between the transverse legs, whereby no welding is made.
  • the second zygomatic arch is arranged parallel to the transverse legs.
  • the remanence air gap whose width is on the order of 0.3 mm, may be air-filled or filled with a non-magnetic material.
  • the excitation winding of the magnet arrangement is connected to an energy store whose energy content is sufficient to release the magnet armature from the holding state.
  • the energy store may be a storage capacitor or an inductor.
  • the circuit arrangement is associated with a monitoring unit for controlling the voltage state of the energy store, so that the arrangement can be switched to another source of energy.
  • the advantage of the invention is that a circuit arrangement (preferably with pulse width modulation) for driving the exciter winding and for supplying the electrical energy for the excitation winding can be operated practically in 'stand-by mode'.
  • the EMC measures can be reduced because in the hold state, only the electrical energy for the idle power of the circuit must be provided. In comparable magnet arrangements is clocked in the hold state, whereby interference fields are unavoidable. The breaking capacity is minimal.
  • the holding power is low and corresponds to the standby power of the control electronics.
  • the design of the electronics is only determined by self-consumption.
  • the magnetic circuit is energetically designed only for the situation 'magnet armature closing'.
  • the turn-off energy should be saved in the phase of the tightening process, for example by charging a capacitor during the tightening process.
  • the permanent magnet consists - as usual in comparable arrangements - of magnetically hard material, such as AlNico, which also seeerd connections are possible.
  • the advantage of the magnet arrangement is in particular that a small space requirement for the excitation coil is necessary, whereby a compact structure can be achieved.
  • the invention can also be used wherever the movement of the armature can be implemented in the form of a linear drive.
  • the magnetic yoke 10 has a U-shape and consists of two - with respect to the vertical axis of symmetry SA - symmetrical halves (in L-shape) with longer pole legs 11 and short transverse legs 12.
  • the transverse legs are arranged against each other. Between the transverse legs, a permanent magnet 20 is supported.
  • the ends of the transverse legs are formed with lugs 19, between which the permanent magnet is clamped during assembly.
  • comparable magnetic structures in which elaborate laser welding connections are made this is an elegantly simple structure. 3 shows the assembly drawing, from which it can be seen that the magnet arrangement consists of laminated cores and are riveted on cover plates 80, resulting in the mechanical cohesion.
  • the magnet armature 60 consists of a plate-shaped body with laterally appended extensions 61. On the armature, which should preferably be linearly movable, a restoring force by at least one (not shown) spring (36) generated.
  • the armature has an air gap or hub 18. An operative connection of the armature with a contactor of the switch or contactor is present, but not shown.
  • the magnetic yoke is formed in the usual form as a laminated core. Laterally, the transverse legs 12 opposite, mounting legs 41 are each arranged with a bore to which the magnet assembly can be mounted in a housing.
  • the first magnetic flux circuit MK1 is associated with a magnetic bypass circuit MK2, this is the pole yoke (11,12) available pol direabgewandt.
  • the bypass circuit is formed by two, parallel to the short transverse legs 12 second Jochbogenschenkel 24 (parallel leg). Transverse leg and Jochbogenschenkel are offset from each other by a groove, but otherwise they are a physical part of the magnetic yoke.
  • the pole legs 11 are each comprised of bobbins with exciter windings 30, 32.
  • the magnetic flux that can be generated by the exciter windings 30, 32 overlaps in the air gap with the magnetic flux of the permanent magnet 20. During the tightening process, the two magnetic fluxes subtract in the bypass circuit.
  • the Jochbogenschenkel 24 each have a smaller cross section compared to the first transverse legs 12 and the armature
  • the Jochbogenschenkel are separated by a Remanenz Kunststoffspalt 25.
  • the width of the remanence air gap is approx. 0.3 mm.
  • the permanent magnet Due to its magnetic energy, the permanent magnet generates a magnetic flux which is divided into the two magnetic flux circuits MK1 and MK2.
  • the design of the magnet arrangement, in particular the strength of the permanent magnet is chosen so that in the holding state (magnet attracted, without applying the electrical excitation through the coils 30,32) of the armature is held securely on the yoke for all operating conditions.
  • This magnetic dimensioning ensures that in the holding position no magnetic energy must be supplied by the excitation coils; the holding force for the armature is applied solely by the permanent magnet.
  • the electrical power of an associated electronic circuit can be minimized, since essentially only the provision of the tripping energy has to be ensured.
  • the low tripping energy can, for example, be provided sufficiently via a suitably dimensioned storage capacitor or an inductance whose energy content can also be monitored by the electronic circuit.
  • the drive of the magnet assembly (closing the armature, drive excitation) is generated by a powerful coil current (for example, 100 msec with a power of 100 watts), which generates a magnetic flux opposite to that of the permanent magnet in the pole legs and also the spring force on the armature overcomes.
  • a powerful coil current for example, 100 msec with a power of 100 watts
  • the magnetic bypass circuit MK2 contains only low magnetic energy.
  • the exciting current can be switched off, since - as shown - the holding force is done statically.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
  • Push-Button Switches (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)

Claims (9)

  1. Dispositif à électroaimant pour un interrupteur, en particulier un contacteur, comprenant un circuit magnétique principal (MK1) composé
    d'une culasse d'aimant (10) et d'une armature d'aimant (60) sollicitée par un dispositif de rappel (36);
    d'un dispositif de contact de l'interrupteur, relié fonctionnellement à l'armature de l'aimant (60);
    d'au moins un aimant permanent (20) agencé dans le circuit magnétique principal (MK1), pour fournir la force de retenue de l'armature d'aimant (60);
    d'un circuit de dérivation (MK2) pouvant également être fermé par l'armature de l'aimant (60), agencé parallèlement au circuit magnétique principal (MK1);
    le circuit de dérivation (MK2) comprenant deux branches de pôle (11), un arc de culasse (24) étant agencé sur la culasse de l'aimant (10), en un point opposé aux surfaces de pôles, et étant interrompu par un entrefer rémanent (25);
    d'un assemblage de circuit pour la commande électronique du dispositif à électroaimant, fonctionnant en mode de veille pendant l'application de l'armature de l'aimant sur les branches de pôles;
    d'au moins un enroulement d'excitation (30, 32) affecté à une branche de pôle (11);
    la force d'attraction pour l'armature de l'aimant (60) séparée de la culasse de l'aimant (10) étant produite par un flux traversant l'enroulement (les enroulements) d'excitation (30, 32); et
    l'enroulement (les enroulements) d'excitation (30, 32) du dispositif à aimant étant raccordé(s) à au moins un réservoir d'énergie, dont le contenu énergétique est suffisant pour dégager l'armature de l'aimant (60) de l'état de retenue;
    caractérisé en ce que l'assemblage de circuit comporte une unité de surveillance, surveillant le contenu énergétique suffisant pour ouvrir le dispositif d'aimant de l'au moins une source d'énergie, de sorte à entraîner, en présence d'un contenu énergétique inférieur au contenu énergétique suffisant, une commutation vers un deuxième réservoir d'énergie.
  2. Dispositif à aimant selon la revendication 1, caractérisé en ce que les branches de pôles (11) constituant la culasse de l'aimant (10) sont reliées par des tôles de couverture (80).
  3. Dispositif à aimant selon l'une des revendications précédentes, caractérisé en ce que la culasse de l'aimant (10) a une forme en U et est constituée de deux moitiés en forme de L, avec une branche de pôle plus longue (11) et une branche transversale plus courte (12), une branche de pôle (11) étant respectivement orientée vers les surfaces de contact de l'armature de l'aimant (60).
  4. Dispositif à aimant selon l'une des revendications précédentes, caractérisé en ce que l'aimant permanent (20) est agencé au milieu entre les branches transversales (12) et y est retenu par serrage.
  5. Dispositif à aimant selon l'une des revendications précédentes, caractérisé en ce que le deuxième arc de culasse (24) est agencé parallèlement aux branches transversales (12).
  6. Dispositif à aimant selon l'une des revendications précédentes, caractérisé en ce que le dispositif à aimant est constitué par un système de tôles magnétiques.
  7. Dispositif à aimant selon l'une des revendications précédentes, caractérisé en ce que l'entrefer rémanent (25) est rempli d'un matériau non magnétique.
  8. Dispositif à aimant selon l'une des revendications précédentes, caractérisé en ce que l'aimant permanent (20) est agencé par serrage entre les branches transversales (12).
  9. Dispositif à aimant selon l'une des revendications précédentes, caractérisé en ce que le réservoir d'énergie est constitué par un condensateur de stockage ou une inductance.
EP02794737A 2001-08-17 2002-07-27 Dispositif a electroaimant pour interrupteur Expired - Lifetime EP1417694B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10140559 2001-08-17
DE10140559A DE10140559A1 (de) 2001-08-17 2001-08-17 Elektromagnetanordnung für einen Schalter
PCT/EP2002/008402 WO2003017308A1 (fr) 2001-08-17 2002-07-27 Dispositif a electroaimant pour interrupteur

Publications (2)

Publication Number Publication Date
EP1417694A1 EP1417694A1 (fr) 2004-05-12
EP1417694B1 true EP1417694B1 (fr) 2007-03-07

Family

ID=7695871

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02794737A Expired - Lifetime EP1417694B1 (fr) 2001-08-17 2002-07-27 Dispositif a electroaimant pour interrupteur

Country Status (5)

Country Link
US (1) US6906605B2 (fr)
EP (1) EP1417694B1 (fr)
AT (1) ATE356422T1 (fr)
DE (2) DE10140559A1 (fr)
WO (1) WO2003017308A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2896615A1 (fr) * 2006-01-20 2007-07-27 Areva T & D Sa Actionneur magnetique a aimant permanent a volume reduit
FR2933805B1 (fr) * 2008-07-08 2013-12-20 Hager Electro Sas Actionneur electromagnetique a derivation de flux
KR200451951Y1 (ko) * 2008-12-31 2011-01-25 엘에스산전 주식회사 적층 코어를 사용한 모노스테이블 영구자석형 액추에이터
FR2942908B1 (fr) * 2009-03-09 2011-04-08 Hager Electro Sas Actionneur electromagnetique a aimant permanent
EP2383016B1 (fr) 2010-04-29 2017-08-23 BIOTRONIK SE & Co. KG Système d'entretien pour l'entretien d'un agencement de stockage d'énergie
DE102011107734B4 (de) * 2011-07-14 2017-06-01 Phoenix Contact Gmbh & Co. Kg Schaltungsanordnung zum Schalten eines Relais in einen sicheren Schaltzustand
EP2551867A1 (fr) * 2011-07-28 2013-01-30 Eaton Industries GmbH Protection pour courant continu
DE102014117489A1 (de) 2014-11-28 2016-06-02 Eaton Electrical Ip Gmbh & Co. Kg Schnellauslöseanordnung zum Trennen eines Strompfads in einem Schaltgerät
CN110739191B (zh) * 2018-07-20 2022-03-04 施耐德电器工业公司 电磁脱扣器

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3579050A (en) * 1969-06-11 1971-05-18 Northern Electric Co High-low voltage detector

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE956139C (de) 1954-03-01 1957-01-17 Bbc Brown Boveri & Cie Magnetausloeser mit kurzzeitiger Ausloeseverzoegerung
NL298444A (fr) 1962-12-29
DE1277420B (de) 1963-12-03 1968-09-12 Siemens Ag Haltemagnet fuer Selbstschalter, insbesondere Fehlerstromschutzschalter
JPS5740522B2 (fr) 1974-01-18 1982-08-28
DE3336011A1 (de) * 1983-10-04 1985-04-18 Robert Bosch Gmbh, 7000 Stuttgart Elektromagnet
DE3520879C1 (de) * 1985-06-11 1986-09-18 SDS-Relais AG, 8024 Deisenhofen Magnetsystem für ein elektromagnetisches Relais
DE3910810A1 (de) 1989-04-04 1990-10-11 Luetze Gmbh Co F Schaltungsanordnung fuer ein elektromagnetisches ventil
JP3496982B2 (ja) 1994-07-15 2004-02-16 三菱電機株式会社 電磁接触器
WO1998031034A1 (fr) * 1997-01-09 1998-07-16 Siemens Aktiengesellschaft Reduction du temps de mise sous tension des contacteurs a commande electronique

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3579050A (en) * 1969-06-11 1971-05-18 Northern Electric Co High-low voltage detector

Also Published As

Publication number Publication date
EP1417694A1 (fr) 2004-05-12
WO2003017308A1 (fr) 2003-02-27
DE50209670D1 (de) 2007-04-19
DE10140559A1 (de) 2003-02-27
US20040027775A1 (en) 2004-02-12
US6906605B2 (en) 2005-06-14
ATE356422T1 (de) 2007-03-15

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