WO2003005389A1 - Entrainement lineaire electrodynamique - Google Patents

Entrainement lineaire electrodynamique Download PDF

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Publication number
WO2003005389A1
WO2003005389A1 PCT/DE2002/002434 DE0202434W WO03005389A1 WO 2003005389 A1 WO2003005389 A1 WO 2003005389A1 DE 0202434 W DE0202434 W DE 0202434W WO 03005389 A1 WO03005389 A1 WO 03005389A1
Authority
WO
WIPO (PCT)
Prior art keywords
coil
auxiliary
linear drive
capacitor
magnetic field
Prior art date
Application number
PCT/DE2002/002434
Other languages
German (de)
English (en)
Inventor
Karl Mascher
Original Assignee
Siemens Aktiengesellschaft
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 Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Priority to EP02742816A priority Critical patent/EP1402546B1/fr
Priority to DE50212362T priority patent/DE50212362D1/de
Publication of WO2003005389A1 publication Critical patent/WO2003005389A1/fr

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
    • 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
    • H01H3/28—Power arrangements internal to the switch for operating the driving mechanism using electromagnet

Definitions

  • the invention relates to an electrodynamic linear drive, in particular a drive for an electrical switch, in which a magnetically active part can be moved by a magnetic field generated by a current-carrying coil.
  • Such an electrodynamic linear drive is known for example from the published patent application DE 199 29 572 AI.
  • the linear drive there has a coil which generates a magnetic field when current flows through the coil turns.
  • the magnetic field runs inside them
  • Axial direction of the coil A movable armature has a magnetically active part.
  • the armature and the magnetically active part can only be moved perpendicular to the axial direction.
  • the magnetically active part can be transferred from one end position to another end position along a movement path.
  • the armature is driven in pulses. Regardless of the starting position of the magnetically active part, it is accelerated towards the center of the coil.
  • the object of the present invention is to design an electrodynamic drive of the type mentioned at the outset in such a way that the movement of the magnetically active part can be better controlled.
  • the object is achieved according to the invention in the case of a linear drive of the type mentioned at the outset by providing an auxiliary coil in addition to the coil which is suitable for a limited auxiliary period generates an auxiliary magnetic field during an initial phase of the movement of the magnetically active part.
  • the sequence of movements can be controlled favorably.
  • the magnetic fields generated by the coil and the auxiliary coil can be superimposed in a favorable manner, so that a very high driving force is available at the start of the movement.
  • a large dimensioning of the coil for generating a high initial force can be dispensed with.
  • a holding device is only required at the end of the movement process of the magnetically active part that is already in motion.
  • the coil and the auxiliary coil are part of a common winding.
  • the coil can additionally have one or more center connections. Depending on the technical circumstances, one of the center connections is then select and so determine the size of the auxiliary coil. If several center connections are provided, it is possible to use the same winding to form different coils and auxiliary coil combinations. If necessary, the use of the auxiliary coil can also be dispensed with. In spite of different technical design variants, similar coils can be used for different linear drives.
  • Auxiliary coil is fed from an auxiliary voltage source, in particular an auxiliary capacitor.
  • auxiliary voltage source is provided to supply the auxiliary coil, the auxiliary current required to generate the auxiliary magnetic field can be supplied independently of other voltage sources.
  • the use of an auxiliary capacitor as an auxiliary voltage source is particularly advantageous.
  • the auxiliary capacitor can be charged in a simple manner and is then available for supplying the auxiliary coil.
  • An auxiliary capacitor charged in this way can provide the auxiliary coil with the necessary energy almost independently of external conditions, such as, for example, a malfunction in a power supply network or another conventional voltage source.
  • the auxiliary coil has a lower inductance than the coil.
  • auxiliary coil has a lower inductance, it is ensured by simple means that the auxiliary magnetic field due to the inductance of the auxiliary coil and the resulting small time constant only during a limited time. interval is generated, which is shorter than the time interval of the magnetic field generated by the coil.
  • the auxiliary capacitor and the auxiliary coil form part of an auxiliary resonant circuit, the time constant of which is considerably smaller than the time constant of a main resonant circuit formed from the coil and a main capacitor.
  • the drive can be controlled in a very favorable manner.
  • the main current flowing between the main capacitor and the coil generates a magnetic field in the coil.
  • An auxiliary current flows in the auxiliary resonant circuit, which generates the auxiliary magnetic field in the auxiliary coil.
  • the auxiliary resonant circuit advantageously has a smaller time constant than the main resonant circuit.
  • a further advantageous embodiment provides that a free-wheeling diode is connected in parallel with the auxiliary coil.
  • the freewheeling diode allows current to flow through the auxiliary coil in only one direction with very simple means. This ensures that the auxiliary magnetic field is always directed in such a way that it always has a positive reinforcing effect on the magnetic field generated by the coil. Any currents that generate an auxiliary magnetic field that through the magnetic field generated in the opposite direction is blocked. Such currents occur during the second half-wave of the oscillation in the auxiliary resonant circuit.
  • the main capacitor is connected in series with the parallel connection, from the coil on the one hand and the auxiliary coil with the auxiliary capacitor connected upstream in series.
  • Such a circuit variant makes it possible to design the main capacitor and the coil as a main oscillating circuit and to design the oscillation behavior of the main oscillating circuit in such a way that after a predetermined number of oscillations, for example one or two oscillation processes, the oscillation of the main oscillating circuit is automatically damped.
  • the part of the auxiliary resonant circuit formed from the auxiliary coil and auxiliary capacitor has its own auxiliary voltage source and relieves the main capacitor of additional load. Furthermore, the time constant of the auxiliary resonant circuit can be set by the auxiliary capacitor.
  • FIG. 1 shows a vacuum tube in its off position with an associated electrodynamic linear drive
  • FIG. 2 shows a vacuum tube in its on position with an associated electrodynamic linear drive
  • FIG. 3 shows an electrical circuit for controlling an electrodynamic linear drive
  • the Figure 4 is a diagram of the currents occurring during a switching process through the coil and auxiliary coil as a function of time.
  • FIG. 1 shows a vacuum tube 1 of a switch of medium or high voltage technology, which has a first fixed contact piece 2 and a second one, by means of a drive
  • the drive 4 has a coil 5 which, when a current flows through its windings, generates a magnetic field 6 in the axial direction. Furthermore, to generate an auxiliary magnetic field there is a coil
  • the yoke body 8 has a central yoke body branch 8a and a first side yoke body branch 8b and a second side yoke body branch 8c.
  • An armature 9 is movable perpendicular to the magnetic field 6.
  • the non-magnetic part of the armature 9 is coupled to the second movable contact piece 3.
  • a permanent magnet 10, which acts as a magnetically active part, is assigned to and connected to the non-magnetic part of the armature 9.
  • the coil 5, the auxiliary coil 7 and the yoke body 8 each extend along two sides of the armature 9, so that an air gap is formed, along which the one is not Magnetic part of the armature 9 with the permanent magnet 10 is movable.
  • the electrodynamic linear drive 4 is constructed with mirror symmetry with respect to the air gap.
  • the drive 4 can also extend along a single side of the armature 9.
  • other arrangements of the coil 5 and the auxiliary coil 7 with respect to the armature 9 can also be provided.
  • a stationary holding device is provided to support the holding forces when switched on.
  • This holding device essentially consists of a holding magnet 11 and a counter yoke 12, which is fixedly connected to the armature 9 or the second movable contact piece 3, to the holding magnet 11.
  • the counter yoke 12 is in the position (FIG. 2) of the vacuum tube 1 Effective range of the holding magnet 11.
  • the magnetic yoke emanating from the holding magnet 11 attracts the counter yoke 12 and thereby the second movable contact piece 3 is pressed against the first fixed contact piece 2 in addition to the self-holding force caused by the permanent magnet 10 and the first lateral yoke body branch 8b. This is particularly important when used in a vacuum switch.
  • the counter yoke 12 In the off position, the counter yoke 12 is outside the magnetic field emanating from the holding magnet 11.
  • the counter yoke 12 can be arranged such that it acts as a mechanical stop for limiting the path of movement of the armature 9.
  • the circuit shown in FIG. 3 is characterized by a very simple structure consisting of a few components.
  • the coil 5 is arranged in a first parallel branch 13.
  • the auxiliary coil 7 is arranged in a second parallel branch 14.
  • an auxiliary capacitor 15 is provided in the second parallel branch 14 in series with the auxiliary coil 7.
  • a freewheeling diode 16 is parallel to the auxiliary coil 7 connected.
  • a main capacitor 17 is connected in series with the first parallel branch 13 and the second parallel branch 14.
  • the main capacitor 17 and the coil 5 form a main resonant circuit.
  • the auxiliary coil 7 and the auxiliary capacitor 15 are part of an auxiliary resonant circuit.
  • the main resonant circuit and the auxiliary resonant circuit can be closed and disconnected by means of a switch 18.
  • the inductance of the main coil 5 is greater than the inductance of the auxiliary coil 7. Because of these electrical quantities, the time constant of the main resonant circuit is greater than the time constant of the
  • Auxiliary resonant circuit that is, with the holder 18 closed, a current oscillates between the main capacitor 17 and the main coil 5 with a lower frequency than a current oscillating between the auxiliary coil 7 and the auxiliary capacitor 15.
  • the main capacitor 17 and the auxiliary capacitor 15 can be charged by a charging device 21 shown schematically in FIG. If the switch 18 is now closed, that is to say the electrodynamic drive 4 is to be put into operation, the auxiliary capacitor 15 drives a current through the auxiliary coil 7 via the now closed circuit. The magnetic field generated thereby moves the permanent magnet 10 and the latter parts connected to it towards the center of the coil. Due to the relatively small time constant, this current increases very quickly, very strongly and also decays very quickly. At the same time, the main capacitor 17 drives a current through the main coil 5. Because of the larger time constant, however, this current rises more slowly and to a smaller maximum than the current flowing through the auxiliary coil 7. After the current has decayed through the auxiliary coil 7 and the associated charging of the auxiliary capacitor 15, the polarity of the current now flowing back changes. This flowing back current will via the correspondingly switched freewheeling diode 16 on the
  • Auxiliary coil 7 bypasses and discharges the auxiliary capacitor 15.
  • the current flowing in the main resonant circuit also changes its polarity after it has decayed and thus causes a change in the polarity of the magnetic field generated by the coil 5.
  • the permanent magnet 10 has already passed the central yoke body branch 8a, so that the permanent magnet 10 previously accelerated in the direction of the coil center is repelled out of the coil center in the direction of one of the lateral yoke body branches 8b, 8c.
  • the electrical properties of the coil 5 and of the main capacitor 17 can be selected such that after a desired number of oscillations, for example one oscillation of a period, the current flowing in the main oscillating circuit is almost damped to the current level 0 by the natural damping of the main oscillating circuit , By selecting the auxiliary capacitor 15, the peak value or the frequency of the current flowing in the auxiliary resonant circuit can be set.
  • FIG. 4 shows the course over time of the current 19 flowing through the coil 5 and of the current 20 flowing through the auxiliary coil 7 during a switching movement.
  • the diagram directly shows the course of the acceleration force acting on the contact piece during a switching operation.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)

Abstract

L'invention concerne un entraînement électrodynamique (4) notamment destiné à entraîner un commutateur électrique, caractérisé en ce qu'une bobine auxiliaire (7) est affectée à une bobine (5). Le champ magnétique auxiliaire produit par la bobine auxiliaire (7) produit un court instant une force de commutation élevée dans une première phase d'un processus de commutation.
PCT/DE2002/002434 2001-07-04 2002-06-27 Entrainement lineaire electrodynamique WO2003005389A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP02742816A EP1402546B1 (fr) 2001-07-04 2002-06-27 Entrainement lineaire electrodynamique
DE50212362T DE50212362D1 (de) 2001-07-04 2002-06-27 Elektrodynamischer linearantrieb

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2001132553 DE10132553A1 (de) 2001-07-04 2001-07-04 Elektrodynamischer Linearantrieb
DE10132553.3 2001-07-04

Publications (1)

Publication Number Publication Date
WO2003005389A1 true WO2003005389A1 (fr) 2003-01-16

Family

ID=7690677

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2002/002434 WO2003005389A1 (fr) 2001-07-04 2002-06-27 Entrainement lineaire electrodynamique

Country Status (3)

Country Link
EP (1) EP1402546B1 (fr)
DE (2) DE10132553A1 (fr)
WO (1) WO2003005389A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2467363A (en) * 2009-01-30 2010-08-04 Imra Europ S A S Uk Res Ct A linear actuator
CN102044354A (zh) * 2009-10-14 2011-05-04 Abb技术股份公司 用于制造断路器极柱部分的方法
EP2407990A1 (fr) * 2010-07-15 2012-01-18 ABB Technology AG Élément de pôle de disjoncteur et procédé de production d'un tel élément de pôle
EP2560178A1 (fr) * 2011-08-19 2013-02-20 Schneider Electric Sachsenwerk GmbH Disjoncteur destiné à commuter une tension moyenne et procédé de fonctionnement d'un tel disjoncteur
US8677609B2 (en) 2010-07-15 2014-03-25 Abb Technology Ag Method for producing a circuit-breaker pole part
RU2756691C2 (ru) * 2016-12-06 2021-10-04 Хилти Акциенгезелльшафт Электродинамический привод

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10309697B3 (de) 2003-02-26 2004-09-02 Siemens Ag Magnetischer Linearantrieb

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1260913A (en) * 1968-02-09 1972-01-19 Data Products Corp Electric linear motion device
US4510421A (en) 1982-07-10 1985-04-09 Krauss-Maffei Aktiengesellschaft Linear magnet
US4772841A (en) * 1986-03-08 1988-09-20 Shinko Electric Co., Ltd. Stepping motor and driving method thereof
DE19929572A1 (de) 1999-06-22 2001-01-04 Siemens Ag Magnetischer Linearantrieb

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2542299C3 (de) * 1975-09-23 1982-09-02 Philips Patentverwaltung Gmbh, 2000 Hamburg Linearmotor für anzeigende und schreibende Meßgeräte

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1260913A (en) * 1968-02-09 1972-01-19 Data Products Corp Electric linear motion device
US4510421A (en) 1982-07-10 1985-04-09 Krauss-Maffei Aktiengesellschaft Linear magnet
US4772841A (en) * 1986-03-08 1988-09-20 Shinko Electric Co., Ltd. Stepping motor and driving method thereof
DE19929572A1 (de) 1999-06-22 2001-01-04 Siemens Ag Magnetischer Linearantrieb

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2467363A (en) * 2009-01-30 2010-08-04 Imra Europ S A S Uk Res Ct A linear actuator
CN102044354A (zh) * 2009-10-14 2011-05-04 Abb技术股份公司 用于制造断路器极柱部分的方法
EP2407990A1 (fr) * 2010-07-15 2012-01-18 ABB Technology AG Élément de pôle de disjoncteur et procédé de production d'un tel élément de pôle
WO2012007172A1 (fr) * 2010-07-15 2012-01-19 Abb Technology Ag Partie de pôle de disjoncteur et procédé de production de ladite partie de pôle
CN103069528A (zh) * 2010-07-15 2013-04-24 Abb技术股份公司 电路断路器极柱部件和用于制造该极柱部件的方法
US8677609B2 (en) 2010-07-15 2014-03-25 Abb Technology Ag Method for producing a circuit-breaker pole part
US8785802B2 (en) 2010-07-15 2014-07-22 Abb Technology Ag Circuit-breaker pole part and method for producing such a pole part
EP2560178A1 (fr) * 2011-08-19 2013-02-20 Schneider Electric Sachsenwerk GmbH Disjoncteur destiné à commuter une tension moyenne et procédé de fonctionnement d'un tel disjoncteur
RU2756691C2 (ru) * 2016-12-06 2021-10-04 Хилти Акциенгезелльшафт Электродинамический привод
US11770061B2 (en) 2016-12-06 2023-09-26 Hilti Aktiengesellschaft Electrodynamic drive

Also Published As

Publication number Publication date
EP1402546A1 (fr) 2004-03-31
DE50212362D1 (de) 2008-07-24
EP1402546B1 (fr) 2008-06-11
DE10132553A1 (de) 2003-01-23

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