EP2165347B1 - Système de propulsion magnétique pour dispositif de commutation - Google Patents

Système de propulsion magnétique pour dispositif de commutation Download PDF

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Publication number
EP2165347B1
EP2165347B1 EP08760338.7A EP08760338A EP2165347B1 EP 2165347 B1 EP2165347 B1 EP 2165347B1 EP 08760338 A EP08760338 A EP 08760338A EP 2165347 B1 EP2165347 B1 EP 2165347B1
Authority
EP
European Patent Office
Prior art keywords
armature
channels
drive system
holes
magnetic drive
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.)
Active
Application number
EP08760338.7A
Other languages
German (de)
English (en)
Other versions
EP2165347A1 (fr
Inventor
Ralf-Reiner Volkmar
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.)
Siemens AG
Original Assignee
Siemens AG
Siemens Corp
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Publication date
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Publication of EP2165347A1 publication Critical patent/EP2165347A1/fr
Application granted granted Critical
Publication of EP2165347B1 publication Critical patent/EP2165347B1/fr
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00—Electromagnetic relays
    • H01H51/22—Polarised relays
    • H01H51/2209—Polarised relays with rectilinearly movable armature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/081—Magnetic constructions
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/16—Rectilinearly-movable armatures
    • H01F7/1607—Armatures entering the winding
    • H01F7/1615—Armatures or stationary parts of magnetic circuit having permanent magnet
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/081—Magnetic constructions
    • H01F2007/086—Structural details of the armature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/16—Rectilinearly-movable armatures
    • H01F2007/1669—Armatures actuated by current pulse, e.g. bistable actuators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/16—Rectilinearly-movable armatures
    • H01F2007/1676—Means for avoiding or reducing eddy currents in the magnetic circuit, e.g. radial slots

Definitions

  • the invention relates to a magnetic drive system for a switching device specified in the preamble of claim 1. Art.
  • Such a bipolar drive system is z. B. from the DE 197 09 089 A1 already known.
  • the anchor here consists of a solid magnetic iron material, which makes it cheaper to manufacture than an assembled from layered electrical sheets anchor and often will have a greater long-term stability.
  • For the massive anchor itself has the disadvantage that compared to anchors made of layered electrical steel more eddy current losses occur and a stronger remanence is present, which makes it difficult, inter alia, the release of the switching contacts when switching.
  • the armature is provided with elongated hollow channels, which consist of narrow slots and extend in the feed direction of the armature and thus in the direction of the magnetic field lines.
  • the slots provided on the narrow sides of the anchor weaken the cuboid anchor in each case over one third of its cross-sectional width and over its entire length. From the broad sides of the anchor next to each other several parallel slots are recessed, which do not extend over the entire length of the armature but end at a distance to the end faces of the armature. Overall, the mechanical stability of the armature but significantly affected by the slots. Therefore, it is provided to increase the stability of the anchor after introducing the slots by filling them with insulating material again. Precisely because these slots should be as tight as possible for technical reasons, that is Filling the slots technically but correspondingly difficult and significantly increases the cost of making the anchor.
  • the transitions between the contact surface of the armature and the yoke plates should be able to be adapted as needed. Although a reduction of the contact surface leads to an improved response in terms of a shorter switching time, but must be bought with the disadvantage of a reduced adhesive force of the anchor. Since too low adhesive force of the armature, however, adversely affects the reliability of the magnetic drive system, the known drive system can not meet the design requirements in many applications.
  • the invention is therefore based on the object to further develop a magnetic drive system specified in the preamble of claim 1 to the effect that the stability of the armature is not excessively reduced by the design for reducing the eddy current losses.
  • the magnetic drive system according to the invention for a switching device comprises a magnetic yoke, in which a solid armature of magnetic material is linearly slidably guided between two opposite end positions, and at least one permanent magnet for generating a magnetic flux in the magnet yoke and at least one coil, through which the armature between its end positions back and forth, the armature to avoid eddy current losses is provided with elongated channels and the channels are circumferentially closed in the anchor at its periphery.
  • circumferentially closed channels in the anchor is achieved in a simple manner that the stability of the armature is hardly affected.
  • the technically complex filling of the channels can be omitted.
  • the introduced into the anchor channels consist of holes with a relatively small hollow cross-section.
  • Such holes do not necessarily have to be circular, but can also z. B. have an oval cross-section. If possible, however, the hollow cross-section should be designed so that there are no sharp corners on the peripheral wall delimiting the hollow cross-section.
  • the holes are circular, because they can then be produced inexpensively with drill drills.
  • the holes in the anchor are straight through holes.
  • the holes may be formed as blind holes, which are drilled from both side surfaces.
  • the technical effect of a gap with respect to the reduction of eddy current losses can be approximately achieved when several channels of the armature are lined up with a small distance to a row of holes or multiple rows of holes. Several rows of holes are expediently aligned parallel to each other along a straight line.
  • the ends of the anchor block penetrated by the armature guide rods are connected via at least one row of holes or several, in particular two, three or four parallel rows of through holes which run parallel to the broad sides of the armature near the hole of the armature guide rod. At least one further row of holes or several, in particular two, three or four rows of holes can be provided centrally between these rows of holes, which extend or extend along the central longitudinal plane of the armature between its narrow sides.
  • Another technical improvement is achieved when the broad sides of the anchor block are perforated over several rows largely of through holes.
  • two fields with rows of holes can be arranged next to the transverse plane of the armature guide rod. If two armature guide rods are fastened in opposite blind holes of the armature, an armature area with solid material remaining between the blind hole ends can additionally be used for a central arrangement of a through-hole.
  • the anchor block interspersed with bores in all three spatial directions, not only reduces eddy current losses but also significantly reduces the remanence tendency.
  • the reduction of the remanence is even greater, although the cooperating with the abutment surfaces of the armature mating surfaces of one or more rows of holes are perforated.
  • the magnet system has the advantage over the known system with slots as hollow channels that the formation of eddy currents in all three axial directions obstructed and thus reduced.
  • the reliability remains almost undiminished, since the adhesive force is only slightly reduced at the same Bacindutation and simultaneously decreases the remanence of the magnetic circuit.
  • the latter effect is based essentially on the fact that the magnetic induction in the anchor increases only locally targeted in the saturation region and thereby the local permeability is lowered.
  • the numerous channels in the armature anchor mass is also lower, so that overall results in a lower remanence combined with improved dynamic properties of the armature or the entire magnet system.
  • FIG. 1 is a supporting structure 1 of a not shown in the entirety permanent magnetic drive system to operate a switching device to see.
  • This structure 1 comprises a cuboidal frame, which is composed of two magnet yokes 2 and 3 with the interposition of two bearing plates 4 and 5.
  • Both magnetic yokes 2 and 3 are designed mirror-symmetrically and have at both ends in each case angled by 90 degrees yoke legs, so that they are designed approximately U-shaped with respect to their basic shape.
  • the flat end surfaces of the oppositely directed yoke legs of the magnetic yokes 2 and 3 are up flat on the facing side surface of the bearing plate 4 and down to the facing side surface of the bearing plate 5, wherein the corresponding yoke legs are connected to each other via the bearing plates 4 and 5 respectively.
  • the armature 8 also comprises two armature guide rods 9 which project centrally from the upper side or the lower side of the armature block and are arranged geometrically coaxial with one another.
  • the armature guide rods 9 pass through a bearing bore 10 in their associated bearing plate 4 and 5 with little circumferential clearance and stand out with an end portion of the bearing bore 10 of their bearing plate 4 and 5, so that the armature 8 is vertically linearly slidably guided by the guide rods 9.
  • the yoke frame would be in assembly still with two coils Polschenkeln and yoke legs provided by the magnetic field of the armature 8 would be shifted with appropriate polarity after overcoming its attachment to the bearing plate 5 in its upper end position in which its feed by striking the bottom of the Bearing plate 4 would be limited. After reversal of the polarity of the magnetic field he would be depressed after overcoming the adhesion by magnetic forces back down to the end position shown on the bearing plate 5 and held in the contact position.
  • the mode of action of such magnetic drives is known as such, so that no further explanation is provided here.
  • the magnetic yokes 2 and 3 consist here of a plurality of thin yoke plates, which are joined to the shown thick Jochblechstapel.
  • the armature 8 and the bearing plates 4 and 5 consist of blocks of ferromagnetic material of known type, in particular of a corresponding iron alloy.
  • a plurality of channels (hollow channels) 11, 12 and 13 are integrated in the solid block of the armature 8, which here have a matching diameter of 2 mm to 3 mm , all as through holes are formed and differ only in their length, since they enforce the block of the armature 8 in different directions.
  • the channels 11, 12 and 13 may alternatively be formed as blind holes, which are drilled from both side surfaces.
  • the channels 11 go from the upper end face of the armature 8, parallel to the central longitudinal axis of the anchor guide rods 9 and thus perpendicular to the flat end face until they open on the opposite end.
  • two rows, each with six channels 11 are present, wherein the channels 11 in each of the two rows each have a distance of about 4 mm to the adjacent channel 11.
  • These rows extend parallel to the long side edges of the end faces and on opposite sides of a centrally located on the front side blind hole bore 14 with internal thread, in which the armature guide rod 9 is screwed.
  • the channels 12 are arranged, which emanate from a narrow side of the armature 8 and open on the opposite narrow side of the armature 8.
  • This total of five channels 12 form a straight row, which is arranged centrally between the long side edges of the narrow side, as in connection with FIG. 4 beyond doubt.
  • these channels 12 thereby also run centrally between the two rows with the channels 11 and penetrate the assembly plane of the armature guide rods 9.
  • the channels 12 may therefore alternatively be formed as blind holes and in one Distance before the blind hole 14 ends.
  • Such blind holes as channels 12 should then end as possible at the same distance from the blind hole 14 as the lateral distance of the channels 11 on the front side of the armature 8. This distance is in the frontal plan view according to FIG. 7 clearly visible. In this case, however, the channels 12 would have to be drilled from the opposite end sides, which would result in a corresponding additional expenditure in the production of the armature 8.
  • the channels 13 are introduced, all of which extend at right angles to the longitudinal center plane of the armature 8.
  • the channels 13 go from one broad side of the armature 8 and open into the opposite broad side.
  • the hole pattern on the broad side comprises two rectangular hole fields, which consist of three parallel rows, each with six hollow channels 13, wherein the hollow channels 13 in the row and laterally have a matching distance from each other. These hole fields are on both sides of a central region of the armature 8, in which the armature guide rods 9 are arranged.
  • a single channel 13 ' is additionally centrally disposed, which also forms a connecting the broad sides through hole.
  • the hollow passage 13 ' in this case a solid material area of the anchor block, which has remained between the ends of the two blind holes 14.
  • channels in the armature 8 are also in the bearing plates 4 and 5 channels 15 which extend axially parallel to the channels 11.
  • the channels (hollow channels) 15 two rows, each with six channels 15 are present, the are preferably arranged congruent to the channels 11 in the armature 8.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Linear Motors (AREA)
  • Electromagnets (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)

Claims (11)

  1. Système magnétique d'entraînement d'un dispositif de commutation, comprenant une culasse (2, 3) magnétique dans laquelle une armature (8) massive en matériau magnétique est guidée en déplacement linéaire entre deux positions d'extrémité opposées, comprenant au moins un aimant (6, 7) permanent de production d'un flux magnétique dans la culasse (2, 3) magnétique et au moins une bobine par laquelle l'armature peut aller et venir entre ses positions d'extrémité, l'armature (8) étant, pour empêcher des pertes par courant de Foucault, pourvue de canaux (11, 12, 13, 13') oblongs,
    caractérisé en ce que
    les canaux (11, 12, 13, 13') sont fermés tout autour dans l'armature (8) sur son pourtour.
  2. Système magnétique d'entraînement suivant la revendication 1,
    caractérisé en ce que les canaux (11, 12, 13, 13') de l'armature (8) sont constitués de trous.
  3. Système magnétique d'entraînement suivant la revendication 2,
    caractérisé en ce que les canaux (11, 12, 13, 13') de l'armature (8) sont des trous traversant ou des trous borgnes.
  4. Système magnétique d'entraînement suivant la revendication 1,
    caractérisé en ce que plusieurs canaux (11, 12, 13, 15) fermés tout autour du système d'entraînement sont rangés les uns à côtés des autres en une rangée de trous.
  5. Système magnétique d'entraînement suivant la revendication 4,
    caractérisé en ce que plusieurs rangées de trous formés de canaux (11, 12, 13, 15) s'étendent parallèlement les unes aux autres.
  6. Système magnétique d'entraînement suivant la revendication 5,
    caractérisé en ce que les faces frontales, traversées par des tiges (9) de guidage de l'armature, de l'armature (8) parallélépipédique sont pourvues d'au moins une rangée de trous de canaux (11).
  7. Système magnétique d'entraînement suivant la revendication 2,
    caractérisé en ce que l'armature (8) est traversée transversalement à sa direction d'avance par un agencement de canal.
  8. Système magnétique d'entraînement suivant la revendication 7,
    caractérisé en ce que l'agencement de canal a au moins une rangée de canaux (12) s'étendant au milieu le long des petites faces de l'armature (8).
  9. Système magnétique d'entraînement suivant la revendication 7,
    caractérisé en ce que l'agencement de canal comprend deux champs de trous, qui sont disposés à distance l'un de l'autre latéralement sur les grandes faces de l'armature (8) et qui sont composés respectivement de plusieurs rangées de trous formés de canaux (13).
  10. Système magnétique d'entraînement suivant la revendication 7,
    caractérisé en ce que les grandes faces de l'armature (8) sont reliées entre elles au milieu par un canal (13') central, qui s'étend dans le matériau plein de l'armature (8) entre des trous (14) borgnes de réception des barres (9) de guidage de l'armature.
  11. Système magnétique d'entraînement suivant la revendication 1,
    caractérisé en ce que les surfaces antagonistes du circuit de culasse coopérant avec les surfaces de butée de l'armature (8) ont au moins une rangée de trous ayant des canaux (15).
EP08760338.7A 2007-06-15 2008-06-02 Système de propulsion magnétique pour dispositif de commutation Active EP2165347B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007028203A DE102007028203B3 (de) 2007-06-15 2007-06-15 Magnetisches Antriebssystem für eine Schalteinrichtung
PCT/EP2008/056751 WO2008151959A1 (fr) 2007-06-15 2008-06-02 Système d'entraînement magnétique pour dispositif de commutation

Publications (2)

Publication Number Publication Date
EP2165347A1 EP2165347A1 (fr) 2010-03-24
EP2165347B1 true EP2165347B1 (fr) 2016-03-16

Family

ID=39718525

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08760338.7A Active EP2165347B1 (fr) 2007-06-15 2008-06-02 Système de propulsion magnétique pour dispositif de commutation

Country Status (7)

Country Link
US (1) US20100176902A1 (fr)
EP (1) EP2165347B1 (fr)
CN (1) CN101772820B (fr)
DE (1) DE102007028203B3 (fr)
ES (1) ES2569903T3 (fr)
MX (1) MX2009013440A (fr)
WO (1) WO2008151959A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2704173A1 (fr) * 2012-08-27 2014-03-05 ABB Technology AG Actionneur électromagnétique destiné à un disjoncteur sous vide à moyenne tension
JP6707204B2 (ja) * 2017-08-21 2020-06-10 三菱電機株式会社 電磁操作機構および遮断器
US10297376B2 (en) * 2017-09-25 2019-05-21 The United States Of America As Represented By The Administrator Of Nasa Bi-stable pin actuator
WO2019117649A1 (fr) * 2017-12-14 2019-06-20 최태광 Dispositif de commande de force magnétique et dispositif de maintien de corps magnétique l'utilisant
FR3084772B1 (fr) * 2018-08-01 2021-06-18 Schneider Electric Ind Sas Actionneur electromagnetique et appareil de commutation electrique comportant cet actionneur

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2021659C3 (de) * 1970-05-02 1974-10-03 Siemens Ag Aus Blechen zusammengesetzter Magnetkern
DE3332093A1 (de) * 1983-09-02 1985-03-21 Siemens AG, 1000 Berlin und 8000 München Schaltstueck fuer eine vakuumschaltroehre
JPS61164456A (ja) * 1985-01-11 1986-07-25 Diesel Kiki Co Ltd 電磁アクチユエ−タ
US5207410A (en) * 1992-06-03 1993-05-04 Siemens Automotive L.P. Means for improving the opening response of a solenoid operated fuel valve
DE19709089A1 (de) * 1997-03-06 1998-09-10 Abb Patent Gmbh Permanentmagnetischer Antrieb für einen Schalter
DE29706491U1 (de) * 1997-04-11 1998-08-06 FEV Motorentechnik GmbH & Co. KG, 52078 Aachen Elektromagnetischer Aktuator mit wirbelstromarmem Anker
US6550745B2 (en) * 1999-12-21 2003-04-22 Gary E. Bergstrom Flat lamination solenoid
DE10319285B3 (de) * 2003-04-29 2004-09-23 Compact Dynamics Gmbh Brennstoff-Einspritzventil für Brennkraftmaschinen
DE102005026415A1 (de) * 2005-06-03 2006-12-07 Siemens Ag Elektromagnetische Antriebseinrichtung

Also Published As

Publication number Publication date
EP2165347A1 (fr) 2010-03-24
DE102007028203B3 (de) 2008-12-04
ES2569903T3 (es) 2016-05-13
US20100176902A1 (en) 2010-07-15
MX2009013440A (es) 2010-01-27
CN101772820A (zh) 2010-07-07
WO2008151959A1 (fr) 2008-12-18
CN101772820B (zh) 2013-07-10

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