EP1573766A1 - Actionneur electromagnetique - Google Patents

Actionneur electromagnetique

Info

Publication number
EP1573766A1
EP1573766A1 EP03785595A EP03785595A EP1573766A1 EP 1573766 A1 EP1573766 A1 EP 1573766A1 EP 03785595 A EP03785595 A EP 03785595A EP 03785595 A EP03785595 A EP 03785595A EP 1573766 A1 EP1573766 A1 EP 1573766A1
Authority
EP
European Patent Office
Prior art keywords
moving part
magnetic
locking body
air gap
electromagnetic 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.)
Granted
Application number
EP03785595A
Other languages
German (de)
English (en)
Other versions
EP1573766B1 (fr
Inventor
Martin Böttcher
Marcus Kampf
Carsten Protze
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
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 Siemens AG filed Critical Siemens AG
Publication of EP1573766A1 publication Critical patent/EP1573766A1/fr
Application granted granted Critical
Publication of EP1573766B1 publication Critical patent/EP1573766B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/666—Operating arrangements
    • H01H33/6662—Operating arrangements using bistable electromagnetic actuators, e.g. linear polarised electromagnetic 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
    • H01F7/066—Electromagnets with movable winding
    • 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
    • H01F7/121—Guiding or setting position of armatures, e.g. retaining armatures in their end position
    • H01F7/122—Guiding or setting position of armatures, e.g. retaining armatures in their end position by permanent magnets
    • 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
    • H01F7/14—Pivoting armatures
    • H01F7/145—Rotary electromagnets with variable gap
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/26—Power arrangements internal to the switch for operating the driving mechanism using dynamo-electric motor
    • H01H2003/268—Power arrangements internal to the switch for operating the driving mechanism using dynamo-electric motor using a linear motor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H53/00—Relays using the dynamo-electric effect, i.e. relays in which contacts are opened or closed due to relative movement of current-carrying conductor and magnetic field caused by force of interaction between them
    • H01H53/01—Details
    • H01H53/015—Moving coils; Contact-driving arrangements associated therewith

Definitions

  • the invention relates to an electromagnetic drive for a switch, in particular in the field of medium-voltage technology, with at least one magnetic body that delimits an air gap, a moving part arranged in the air gap with the moving part that is movably guided relative to the magnetic body, at least one permanent magnet and at least one conductor that can be subjected to current, wherein when the moving part moves, the conductor or conductors at least partially extend in a magnetic flux generated by the permanent magnet or magnets.
  • Such an electromagnetic drive is known for example from DE 198 15 538 AI.
  • the drive disclosed there has a three-phase linear motor, which is composed of several motor modules.
  • the motor module has a certain number of fixed motor coils and, in this regard, moving parts with longitudinal magnets that are guided in a longitudinally movable manner.
  • the excitation of the motor coils creates a magnetic field in which the permanent magnets of the moving part are arranged.
  • Due to the Lorenz force generated there is a drive movement of the moving part, which is connected to the moving contact of a switch via a switch rod.
  • the moving contact is pressed by the three-phase linear motor against a fixed contact of the switch, the moving part reaching an end position.
  • An electromagnetic drive is known from WO 95/07542, which consists of a yoke running in a closed frame has soft magnetic material which is composed of lamellae in order to avoid eddy currents.
  • the yoke forms a cavity in which an armature made of soft magnetic material is movably guided between two end positions. In each end position, the armature contacts the soft magnetic yoke with one of its end faces, an air gap being defined between the other end face of the armature opposite the contact point and the closed, peripheral yoke.
  • two coils are fastened in the cavity of the yoke, each of which surrounds one of the end faces of the armature. Permanent magnets for generating a magnetic flux are provided between the coils.
  • the anchor Due to the air gap, the anchor remains fixed in the respective end position. Due to the excitation of the coil, which encloses the end face on the air gap side, such a high magnetic flux is generated in the air gap that, in order to reduce the magnetic resistance, the armature is torn from the yoke and, with the air gap closed, is transferred to its second stable end position, in which it with its other face, which previously limited the air gap, bears against the yoke. The excitation current of the coil can now be interrupted since the armature is also fixed in this end position.
  • the two previously known magnetic drives are based on different physical effects.
  • the electromagnetic drive according to DE 198 15 538 AI uses the so-called Lorentz force to generate the drive effect, which occurs when charged particles move in a magnetic field.
  • the effect of an electromagnetic drive according to WO 95/07542 is due to the physical effect that a magnetic field is preferably in a material with a high magnetic permeability or, in other words, spreads in a material with a low magnetic resistance.
  • Electromagnetic drives which are based on the Lorenz force, have a high dynamic and can also be controlled in a simple manner, namely via the current conducted through the magnetic field.
  • these drives do not assume stable end positions or intermediate positions, but if necessary must be fixed in the end positions provided in each case by additional means.
  • springs are used for this,
  • Reluctance drives are usually characterized by a stable end position fixation. However, they have the disadvantage of a strongly non-linear path-force characteristic, which can either be influenced only with difficulty or at the expense of the holding force in the end positions or at the expense of the installation space.
  • the object of the invention is therefore to provide an electromagnetic drive of the type mentioned at the outset, which can be fixed in its end positions in a simple manner, but the simple control of the drive movement is retained.
  • the invention solves this problem in that the moving part is fixedly connected to at least one soft magnetic locking body and in that the magnetic flux generated by the permanent magnet (s) passes through the locking body in an end position of the moving part, the air gap being bridged by the locking body for the magnetic flux ,
  • the electromagnetic drive according to the invention takes advantage of both the Lorenz force and the force effect resulting from a reduction in the magnetic resistance, or in other words the reluctance force.
  • an air gap is bridged in at least one end position by the locking body, which increases the magnetic resistance for the magnetic flux.
  • the moving part has thus assumed an energetically favorable condition.
  • the magnetic flux is forced to flow via the air gap provided in the magnetic body or else through air gaps which are formed between the magnet body and the locking body and enlarge, as a result of which the magnetic resistance increases. In this way, a magnetically less favorable state is set with regard to the end position.
  • a magnetic force counteracts the detachment.
  • the moving part can be connected to a movable switching contact of a switch, in particular a vacuum switch, by means of a suitable mechanism, for example drive rods and power transmission levers.
  • a suitable mechanism for example drive rods and power transmission levers.
  • the movable switch contact In one end position of the drive, the movable switch contact is firmly in contact with a stationary contact piece of the switch.
  • repulsive forces are generated by the narrow points forming on the contacts.
  • the locking of the end position of the drive prevents the contacts from being lifted from one another and thus the formation of an energy-intensive arc, in particular in the event of a short circuit.
  • the force effect based on the reduction of the magnetic resistance for the magnetic flux has a strongly non-linear characteristic, since high forces are generated by the magnetic body at small distances between the locking bodies.
  • the drive takes place almost exclusively via Lorenz forces.
  • the electromagnetic drive according to the invention can therefore be controlled in the middle travel positions of the moving part in a simple manner, namely either by appropriately supplying the conductor with current or by changing the magnetic flux generated electromagnetically by means of coils. In the end positions, however, a sufficiently high locking force is provided at the same time in order to prevent a movable switching contact from being lifted off a stationary counter contact, even in the event of a short circuit.
  • the locking body for bridging rests on the areas of the magnetic body (s) delimiting the air gap. Rather, the locking body can also be held at a short distance from these areas, so that in these cases, for example, a permanent pressing force can be generated for the switch contact against the fixed contact of the switch. It is essential, however, that the magnetic resistance in the end position is minimized compared to other possible travel positions. Permanent magnets, for example, are attached to the moving part, the magnetic flux generated by them and possibly also by the conductor flowing partially in an end position of the locking body over the locking body, so that the resistance of the entire magnetic circuit in the end position is minimized.
  • the moving part has at least one coil with a carrier which is wrapped by the conductor, each locking body being connected to an end face of the coil.
  • the electromagnetic drive is a stroke drive, the stroke of the electromagnetic drive essentially corresponding to the length of the coil or coils.
  • the locking bodies can be arranged on one side or on both sides of a coil. If, for example, the moving part has two locking bodies and a coil, it is fixed in two end positions. The influence of the locking body on the force-displacement characteristic of the drive is increased compared to the variant with a locking body.
  • the magnetic body comprises a soft magnetic yoke in addition to the permanent magnet or magnets, the magnetic flux generated by each permanent magnet passing through the yoke.
  • the use of a yoke to guide the magnetic flux helps to reduce costs since the air gap does not have to be introduced into a large and therefore expensive permanent magnet. Rather, the use of a smaller permanent magnet is sufficient.
  • the yoke is advantageously ring-shaped or frame-shaped, a magnetic circuit being formed by the rectangular frame, for example, which diglich is interrupted by an air gap interrupting the course of the frame. To avoid eddy currents, the yoke is made up of stacks of lamellae. The magnet body and thus the permanent magnet (s) are stationary with respect to the moving part.
  • this further development of the invention is also referred to as a drive based on the moving coil principle.
  • a drive manages with a direct voltage that can be obtained from only one phase of a three-phase network.
  • each locking body bears against the soft magnetic yoke in the end position assigned to it. An air gap between the locking body and the magnetic body in the end position is thus avoided. The magnetic flux passes directly from the magnetic body into the locking body, which minimizes the magnetic resistance of the magnetic circuit. The moving part is thus locked particularly firmly in the end position.
  • a spring is advantageously provided for detaching the moving part from its end position.
  • the holding force in the respective end position can be reduced or even canceled by suitably energizing the coil.
  • the spring supports the detachment of the moving part from the end position.
  • Suitable springs are, for example, compression springs which are supported on the one hand on a stationary abutment and on the end of the locking body facing away from the coil.
  • the moving part is mounted on a shaft and rotatable, with each locking body in an end position with the magnetic body-connected stops.
  • the electromagnetic drive is not a linear motor, but instead produces a rotary movement which is carried outwards via the shaft in the form of a rotary movement.
  • the magnetic body can have electromagnets that generate a magnetic traveling field.
  • the magnetic body preferably has a yoke with a permanent magnet, the magnetic flux generated by the permanent magnet passing through the recess formed in the magnetic body or, in other words, the air gap.
  • the moving part is essentially designed to match the hollow cylindrical air gap and is rotatably supported in it by means of the shaft. A rotary movement is generated by excitation of the conductor of the moving part.
  • the conductor can be designed, for example, as a winding which is fed by a current phase. However, the conductor can also be realized by several windings which are excited by several current phases, so that a traveling field is created.
  • End positions are defined by the positioning of two stops that are firmly connected to the magnetic body.
  • the locking body for example in the form of a rod, strikes the stops with its opposite end regions, so that in the end position the stops are bridged by the locking body.
  • the magnetic flux is no longer forced to penetrate the air gap, but instead passes from one stop to the other via the locking body against lower magnetic resistance.
  • the moving part is expediently rotationally symmetrical and the conductor is designed as at least one winding on the moving part.
  • FIG. 1 shows an exemplary embodiment of the electromagnetic drive according to the invention in a schematic illustration
  • FIG. 2 shows a further exemplary embodiment of an electromagnetic drive according to the invention in a schematic illustration
  • FIG. 3 shows a further exemplary embodiment of the electromagnetic drive according to the invention in a schematic illustration
  • FIG. 4 shows a further exemplary embodiment of the electromagnetic drive according to the invention in a schematic representation
  • Figure 5 shows a further embodiment of the electromagnetic drive according to the invention in a schematic representation.
  • FIG. 1 shows an embodiment of the electromagnetic drive 1 according to the invention in a schematic representation.
  • the electromagnetic drive shown has one consisting of a yoke 2 and a permanent magnet 3 on magnetic body in which an air gap 4 is provided.
  • the magnetic body 2, 3 and the air gap 4 form a magnetic circuit for the magnetic flux generated by the permanent magnet 3, the air gap 4 compared to the magnetic body 2, 3 representing an area with increased magnetic resistance.
  • the coil 6 has a non-conductive coil support, for example made of plastic, which is wrapped with contacting conductors which are insulated from one another to the outside.
  • the section of the coil 6 protruding into the air gap 4 is exposed to the magnetic flux generated by the permanent magnet 3, so that when the coil is excited with current, a Lorenz force is generated which, depending on the direction of the current, moves the moving part 5 into or out of the air gap 4 this moved out.
  • a lifting movement is provided which can be used as a drive movement, for example for the interrupter unit in a power switchgear in the medium-voltage range.
  • the moving part 5 is drawn into the air gap 4 due to the Lorenz force and the double distance between the locking body 7 and the yoke 2 is less than the diameter of the air gap 4, the magnetic resistance of the magnetic circuit is reduced.
  • the air gap 4 is bridged by the locking body 7. If the locking body 7 lies completely against the soft magnetic yoke 2, a closed magnetic flux is only made possible via materials that have a high permeability and thus a low magnetic resistance. This state is therefore energetic compared to a magnetic circuit Air gap favors. A displacement of the moving part 5 into a position in which the locking body 7 is spaced from the yoke 2 therefore counteracts a force gradient.
  • the locking body 7 is locked on the yoke 2.
  • a spring 8 is only shown schematically in FIG. 1, which is designed, for example, as a helical spring and is supported on the one hand on the yoke 2 and on the other hand on the coil 6. If the locking body 7 rests on the yoke 2, the spring 8 is prestressed. By feeding the coil 6 with current, the permanent magnetic field generating the holding force is weakened to such an extent that the spring 8 accelerates the moving part 5 out of the end position.
  • the spring 8 can also be used to generate a permanent pressing force for a moving contact of a vacuum interrupter at its stationary fixed contact, the moving contact being mechanically connected to the moving part 5 via a suitable rod and lever arrangement in order to initiate the movement of the moving part into the moving contact ,
  • FIG. 2 shows a further exemplary embodiment of an electromagnetic drive 1 according to the invention.
  • the yoke 2 consisting of two sections 2a and 2b has two air gaps 4, the moving part 5 with two coils 6 extending into one of the air gaps 4. In this way, the proportion of the Lorenz force is increased compared to the force effect from the reduction of the magnetic resistance.
  • FIG. 3 shows a further exemplary embodiment of the electromagnetic drive 1 according to the invention in a schematic illustration.
  • the soft magnetic see yoke 2 only an air gap 4 is provided.
  • the moving part 5 has two locking bodies 7 which are arranged on both sides of the coil 6. The movement of the moving part 5 is therefore limited on both sides, so that two end positions are defined, in which one of the locking bodies 7 rests on the soft magnetic yoke 2 and the moving part 5 is in the locking position.
  • two springs 8 are provided, which are arranged opposite one another in the direction of movement of the moving part 5 and are each supported with one of their ends on the locking body 7 assigned to them, whereas the other end of the spring rests on an abutment provided with the yoke 2.
  • Figure 4 shows like Figure 2 an embodiment of the electromagnetic drive according to the invention, in which the soft magnetic yoke 2 is composed of two sections 2a and 2b and two air gaps 4 are formed.
  • the moving part 5 has two coil sections 6, each of which extends into one of the air gaps 4.
  • the moving part 5 according to FIG. 4 has three locking bodies 7.
  • the moving part 5 can therefore only be displaced between two end positions, in each of which two locking bodies 7 bear against the soft magnetic yoke 2, so that both air gaps 4 are bridged.
  • two compression springs 8 are again provided, which lie opposite one another in the direction of movement of the moving part 5 and are each supported on the one hand on the locking body 7 and on the other hand on a stationary abutment, not shown.
  • FIG. 4 also schematically shows a vacuum switch 9, which is composed of a hollow cylindrical, non-conductive ceramic section 10 and of metal end faces 11 and 12.
  • the end face 11 is penetrated by a stationary fixed contact 13, to which an axially movably guided moving contact 14 is arranged axially opposite.
  • the moving contact 14 is held by a conductive switching rod 15 which passes through a metallic bellows 16, through which the freedom of movement of the moving contact is provided.
  • a vacuum chamber 17 is formed between the ceramic section 10, the end walls 11 and 12 and the metal bellows 16, in which a vacuum is applied. Only schematically illustrated terminals 18 are used for the power connection.
  • the movement of the drive is introduced into the vacuum switch via a lever 19 and a transmission rod 20 made of non-conductive material, the lever 19 being connected to the drive 1 via schematically illustrated transmission means 21.
  • a contact pressure spring which is arranged, for example, in the transmission rod 20, is provided to generate the necessary contact pressure force for the contacts.
  • Figure 4 shows the vacuum switch 9 in an intermediate position.
  • the moving contact 14 contacts the fixed contact 13, so that a current flow is made possible.
  • the lowermost locking body 7 and the middle locking body 7 abut the yoke 2 so that the contact position of the vacuum switch 9 is locked.
  • the lifting of the moving contact 14 from the fixed contact 13 due to constriction forces is thus prevented.
  • the upper locking body 7 and the middle locking body 7, but the latter on the lower frame section bear against the yoke 2.
  • the influence of the locking bodies 7 and thus the proportion of the reluctance force is increased compared to the Lorenz force.
  • FIG. 5 shows a further exemplary embodiment of the electromagnetic drive 1 according to the invention.
  • the electromagnetic drive 1 shown there has a magnetic body consisting of a soft magnetic yoke 2 and two permanent magnets 3, the magnetic body being essentially frame-shaped and two projections 22 pointing in the shape of a truncated wedge having.
  • the projections 22 delimit the air gap 4.
  • the moving part 5 is rotatably supported in the air gap 4 by means of a shaft (not shown in FIG. 5) and is provided with a conductor designed as a winding or, in other words, a coil 6, which here is merely by a phase of a three-phase current is excitable.
  • the magnetic flux generated by the permanent magnet 3 selects the path of the least magnetic resistance and penetrates the projections 22 and thus the moving part 5 and the coil 6.
  • the moving part 5 and 4 is rotated due to the Lorentz force this way to generate a driving force for a vacuum switching tube of an electrical switchgear.
  • the opposing locking bodies 7 rest against the projections 22, so that the magnetic flux Jumps 22, the locking body 7 and the moving part 5 passes through.
  • the locking body 7 are made of a ferromagnetic material, so that the magnetic resistance is reduced due to the bridging of the air gap 4.
  • the end positions of the electromagnetic drive 1 are therefore locked by the reluctance force.

Landscapes

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

Abstract

Actionneur électromagnétique (1) pour un commutateur, en particulier dans le domaine de la technique de la moyenne tension, qui comporte au moins un corps (2, 3) d'aimant délimitant un entrefer, une partie mobile (5) placée dans l'entrefer (4) et guidée de manière à être mobile par rapport au corps (2, 3) d'aimant, au moins un aimant permanent et au moins un conducteur (6) destiné à faire circuler du courant, le(s) conducteurs (6) s'étendant, en cas de déplacement de la partie mobile (5), au moins en partie dans un flux magnétique produit par le(s) aimant(s) permanent(s). Selon la présente invention, pour obtenir un actionneur électromagnétique pouvant être fixé de manière simple dans ses positions terminales, la commande simple du mouvement d'actionnement étant maintenue, la partie mobile (5) est reliée à demeure à au moins un corps de verrouillage (7) magnétique doux et le flux magnétique produit par l'aimant (les aimants) permanent(s) (3) traverse le corps de verrouillage (7) dans une position terminale de la partie mobile (5), l'entrefer (4) étant ponté pour le flux magnétique par le corps de verrouillage (7).
EP03785595A 2002-12-19 2003-12-18 Actionneur electromagnetique Expired - Lifetime EP1573766B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10261811A DE10261811B4 (de) 2002-12-19 2002-12-19 Elektromagnetischer Antrieb
DE10261811 2002-12-19
PCT/DE2003/004205 WO2004057637A1 (fr) 2002-12-19 2003-12-18 Actionneur electromagnetique

Publications (2)

Publication Number Publication Date
EP1573766A1 true EP1573766A1 (fr) 2005-09-14
EP1573766B1 EP1573766B1 (fr) 2009-02-25

Family

ID=32519554

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03785595A Expired - Lifetime EP1573766B1 (fr) 2002-12-19 2003-12-18 Actionneur electromagnetique

Country Status (7)

Country Link
US (1) US20060049901A1 (fr)
EP (1) EP1573766B1 (fr)
JP (1) JP2006511047A (fr)
CN (1) CN100334670C (fr)
DE (2) DE10261811B4 (fr)
RU (1) RU2322724C2 (fr)
WO (1) WO2004057637A1 (fr)

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WO2019179983A1 (fr) 2018-03-23 2019-09-26 Etna Industrie Actionneur electromecanique pour disjoncteur d'une installation electrique haute tension

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DE202008015980U1 (de) * 2008-12-03 2010-04-29 Eto Magnetic Gmbh Elektromagnetische Aktuatorvorrichtung
DE102011053289A1 (de) * 2011-09-06 2013-03-07 Contitech Vibration Control Gmbh Aktor
CN103715009B (zh) * 2013-12-12 2016-08-17 库柏爱迪生(平顶山)电子科技有限公司 一种双稳态永磁机构
KR101541226B1 (ko) * 2013-12-27 2015-08-03 순천향대학교 산학협력단 전자기력 디바이스
KR101547029B1 (ko) * 2013-12-27 2015-08-24 순천향대학교 산학협력단 전자기력 디바이스
WO2016120881A1 (fr) * 2015-02-01 2016-08-04 K.A. Advertising Solutions Ltd. Actionneur électromagnétique
CN105129719B (zh) * 2015-07-06 2017-02-01 中国科学院半导体研究所 一种基于洛伦兹力的双向串联mems执行器
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US10726985B2 (en) * 2018-03-22 2020-07-28 Schaeffler Technologies AG & Co. KG Multi-stage actuator assembly

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WO2019179983A1 (fr) 2018-03-23 2019-09-26 Etna Industrie Actionneur electromecanique pour disjoncteur d'une installation electrique haute tension

Also Published As

Publication number Publication date
RU2005122646A (ru) 2006-02-10
DE10261811A1 (de) 2004-07-15
DE50311231D1 (de) 2009-04-09
US20060049901A1 (en) 2006-03-09
CN100334670C (zh) 2007-08-29
DE10261811B4 (de) 2005-01-20
WO2004057637A1 (fr) 2004-07-08
CN1729548A (zh) 2006-02-01
JP2006511047A (ja) 2006-03-30
RU2322724C2 (ru) 2008-04-20
EP1573766B1 (fr) 2009-02-25

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