EP1480230B1 - Moteur linéaire avec un enroulement - Google Patents

Moteur linéaire avec un enroulement Download PDF

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Publication number
EP1480230B1
EP1480230B1 EP04291120A EP04291120A EP1480230B1 EP 1480230 B1 EP1480230 B1 EP 1480230B1 EP 04291120 A EP04291120 A EP 04291120A EP 04291120 A EP04291120 A EP 04291120A EP 1480230 B1 EP1480230 B1 EP 1480230B1
Authority
EP
European Patent Office
Prior art keywords
cable
winding
cables
linear motor
ribbon
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
EP04291120A
Other languages
German (de)
English (en)
Other versions
EP1480230A3 (fr
EP1480230A2 (fr
Inventor
Peter Dipl.-Ing. Zamzow
Harald Dipl.-Ing. Büthe
Georg Dipl.-Ing. Talian
Stefan Dipl.-Ing. Mikus
Dirk Dr.-Ing. Steinbrink
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.)
Nexans SA
Original Assignee
Nexans SA
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 Nexans SA filed Critical Nexans SA
Publication of EP1480230A2 publication Critical patent/EP1480230A2/fr
Publication of EP1480230A3 publication Critical patent/EP1480230A3/fr
Application granted granted Critical
Publication of EP1480230B1 publication Critical patent/EP1480230B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B9/00—Power cables
    • H01B9/02—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients
    • H01B9/027—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients composed of semi-conducting layers

Definitions

  • the invention relates to a linear motor according to the preamble of claim 1 ( DE 196 38 603 A1 ).
  • Linear motors have long been known for electric drives of various types. There are both DC and AC synchronous and asynchronous motors.
  • both a fixed stator and a movable rotor part in contrast to the conventional motor are not circular, but arranged in a straight line.
  • the electrical energy is converted in a linear motor so into mechanical energy that it is directly usable for a translational movement.
  • Areas of application for a linear motor are, for example, passenger transport, conveying and transport, assembly lines, luggage transport, mining, cranes, towing systems, carriages of machine tools and the operation of gate valves.
  • the linear motor can have an excitation winding arranged in the slots of an inductor, which is designed to be three-phase with alternating current.
  • the rotor part then consists either of a rail of electrically good conductive material, such as copper or aluminum (asynchronous motor), or of permanent magnetic material (synchronous motor).
  • a three-phase AC winding for a linear motor which consists of electrical medium voltage cables according to the described structure.
  • the cables used here have an outer, made of electrically conductive insulating material jacket. At least on one side of the stator is in the region of the projecting from the grooves end windings of the cable extending over the entire length of the stator extending, with the conductive sheaths of the cable in good contact and connectable to ground strand of electrically good conductive material arranged.
  • the electrically conductive made coats of cable simultaneously represent their screen, which has a relatively low electrical conductivity.
  • the combination of the sheaths with the strand connected to earth potential results in an overall shield, which ensures a good dissipation of capacitive currents and also ensures that currents resulting from induced voltages remain small.
  • the winding thus has Overall, a low power loss and the field influence is negligible. In addition, since no high electrical voltages can occur, a threat to living things is avoided.
  • the invention has for its object to make the line motor described above so that it can be easily adapted to different operating voltages, so that damage to its winding can be excluded by excessive operating voltages.
  • winding electrical cables are used as winding strands, in which the electrical resistance of the screen to the respective requirements in a simple manner adaptable.
  • the structure of the cables, the manufacturing process and the equipment used for this purpose can remain unchanged.
  • the tape used for the intermediate layer increases the conductivity of the screen of the cables to such an extent that it can carry sufficiently high currents to ensure easy and rapid detection of a ground fault.
  • the tape can be used as a Hybrid band be executed with plastic threads and metallic wires or consist of a single unit combined carbon fibers.
  • the resistance value of the shield remains so high that no high-loss, low-impedance secondary circuits result. Losses due to voltages and currents induced in the screen of the cables are negligible compared to other line losses.
  • the resistance value of the band is adjusted in each case so that it is sufficiently high for the particular application of the cable or the winding produced from the same. It will in any case be set higher than the resistance value of the earth conductor in good contact with the conductive sheaths of all three cables. Regardless of the operating voltage used for the linear motor then error and balancing currents are safely dissipated via the ground wire. The cables and in particular their outer shells are effectively protected in this way against damage from excessive currents. This also applies to large temperature differences to which the cables are exposed during operation, day and night and in different seasons. The band of the intermediate layer keeps its resistance value set during manufacture with great accuracy even then.
  • the inductor 1 with the inductor of a linear motor is called, which forms the stator of the same together with a three-phase winding.
  • the inductor 1 consists of laminated cores in which grooves 2 are mounted for receiving winding strands of the winding.
  • the stator is elongated. It can be many kilometers long.
  • the winding strands consist in the present case of electrical cables whose more accurate structure, for example Fig. 2 evident.
  • a cable 3 is shown, which is fastened with a meandering course in the grooves 2 of the inductor 1.
  • the unoccupied grooves 2 of the inductor 1 are provided for receiving two further cables having the same construction as the cable 3. They are not shown for the sake of simplicity.
  • the three cables together form the three-phase winding of the linear motor.
  • the cable 3 is constructed so that it is easy to deform to the meandering course and without additional effort its shape in the lying outside of the inductor 1 areas - the winding heads 4 - maintains.
  • On at least one side of the inductor 1 extends over its entire length serving as a grounding metallic strand 5 of electrically good conductive material, which is in good electrical contact with the cables and can be connected to Erdpotentiel.
  • the conductor cable 6 is surrounded by an inner conductive layer 7, which may be extruded onto the same.
  • the extrusion process is adjusted so that the material of the conductive layer 7 also penetrates into the gusset, which are present between the individual wires of the outer layer of the conductor 6.
  • the conductive layer 7 is thereby firmly connected to the conductor 6, since it anchors to the same.
  • the interference fit is so good that the conductive layer 7 is released from the conductor 6 either by bending or by axial stress.
  • a material based on EPDM ethylene-propylene-diene monomer
  • This is a material based on a copolymer of ethylene and propylene.
  • the base material becomes highly active carbon black added. That can be a Leitruß alone. It is also possible to use several conductive carbon blacks in the blend.
  • an insulation 8 is arranged, which can also be applied in the same operation by extrusion.
  • the insulation 8 consists for example of a mixture based on EPR (ethylene-propylene rubber).
  • an outer conductive layer 9 can be extruded onto the insulation 8, for which the same material as for the inner conductive layer 7 can be used.
  • the cable 3 has an outer jacket 10 made of a conductive plastic. It is also applied by extrusion.
  • materials for the shell 10 are, for example, polymers based on acetate copolymers of ethylene, for example, have an acetate content of 30% to 70%. Highly conductive carbon blacks are added to these polymers, preferably in combination
  • the intermediate layer 11 consists of a band H ( Fig. 3 to 8 ).
  • it may be a hybrid tape in which plastic threads and metallic wires of variable composition are joined together. The electrical resistance per unit length of such a hybrid band is thereby changed. It can be adjusted within the specified limits in the production of the hybrid band, for example using the so-called Rascheltechnik, and so adapted to the respective requirements in a simple manner.
  • materials for the plastic threads for example, polyamide, polyaramide or glass are suitable.
  • the metallic wires are preferably made of copper.
  • the hybrid tape can be made in any width and length. For example, the width may be between 10 mm and 150 mm for use in cables. The same advantages apply to a band H consisting of unitary carbon fibers.
  • the desired value for the electrical resistance of the band H is given to the manufacturer of the same by the manufacturer of the cable.
  • the band H supplied by the manufacturer then has the value required for its purpose between 1 ⁇ / m and 30 ⁇ / m.
  • the manufacturer of the band H has different possibilities.
  • the number of metallic wires can be variable compared to the number of plastic threads.
  • the diameter of the metallic wires can also be varied.
  • the metallic wires may also be electrically either in series or parallel to each other over a predetermined length of the band H. They can also be arranged alternately both in series and parallel to each other.
  • the band H can according to Fig. 4 also be wrapped around the outer conductive layer 9 so that its edges abut each other. This results in a heel-free, closed all around and in the longitudinal direction of the cable intermediate layer 11th
  • An uninterrupted intermediate layer 11 is given even if the tape H according to Fig. 5 with gap L wound around its outer conductive layer 9 between its edges.

Landscapes

  • Insulated Conductors (AREA)
  • Linear Motors (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)

Claims (3)

  1. Enroulement pour un moteur linéaire, composé de trois câbles électriques disposés dans des rainures d'un inducteur allongé, lesquels présentent une gaine électriquement conductrice et une couche intermédiaire contenant du métal disposée entre la gaine et une couche conductrice externe, avec lequel il existe, sur toute la longueur du stator composé de l'inducteur et des trois câbles connectés en un enroulement triphasé, au moins une barre métallique faisant office de conducteur de terre en un matériau bon conducteur d'électricité, laquelle possède un contact bon conducteur d'électricité avec les gaines conductrices, caractérisé en ce
    - que la couche intermédiaire (11) est constituée d'une bande (H) dont la résistance électrique par unité de longueur est comprise entre 1 Ω/m et 30 Ω/m et
    - que la valeur de la résistance électrique de la couche intermédiaire (11) par unité de longueur est supérieure à la valeur de résistance correspondante de la barre (5) utilisée pour le conducteur de terre.
  2. Enroulement selon la revendication 1, caractérisé en ce que la bande (H) est réalisée sous la forme d'une bande hybride qui se compose de fils en matière plastique et de fils métalliques reliés en une unité.
  3. Enroulement selon la revendication 1, caractérisé en ce que la bande (H) se compose de fibres de carbone regroupées en une unité.
EP04291120A 2003-05-17 2004-04-30 Moteur linéaire avec un enroulement Expired - Lifetime EP1480230B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10322379A DE10322379A1 (de) 2003-05-17 2003-05-17 Elektrisches Kabel für einen Linearmotor und daraus hergestellte Wicklung
DE10322379 2003-05-17

Publications (3)

Publication Number Publication Date
EP1480230A2 EP1480230A2 (fr) 2004-11-24
EP1480230A3 EP1480230A3 (fr) 2005-11-16
EP1480230B1 true EP1480230B1 (fr) 2010-10-06

Family

ID=33039191

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04291120A Expired - Lifetime EP1480230B1 (fr) 2003-05-17 2004-04-30 Moteur linéaire avec un enroulement

Country Status (4)

Country Link
EP (1) EP1480230B1 (fr)
CN (1) CN100433199C (fr)
AT (1) ATE484061T1 (fr)
DE (2) DE10322379A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090272728A1 (en) * 2008-05-01 2009-11-05 Thermoceramix Inc. Cooking appliances using heater coatings

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2708139A1 (de) * 1977-02-25 1978-08-31 Kabel Metallwerke Ghh Kunststoffisoliertes elektrisches kabel
DE3345221A1 (de) * 1983-12-14 1985-07-04 AEG-Telefunken Kabelwerke AG, Rheydt, 4050 Mönchengladbach Mit einer extrudierten leitschicht versehener elektrischer leiter
DE3543106A1 (de) * 1985-12-06 1987-06-11 Kabelmetal Electro Gmbh Elektrisches kabel zur verwendung als wicklungsstrang fuer linearmotoren
US4988949A (en) * 1989-05-15 1991-01-29 Westinghouse Electric Corp. Apparatus for detecting excessive chafing of a cable arrangement against an electrically grounded structure
JP2816400B2 (ja) * 1990-11-20 1998-10-27 北川工業株式会社 電磁波シールド用導電シート
NL9301531A (nl) * 1993-09-06 1995-04-03 Lantor Bv Kabelband.
DE4404785A1 (de) * 1994-02-08 1995-08-10 Siemens Ag Geschirmtes elektrisches Kabel
SE9603442L (sv) * 1995-09-20 1997-03-21 Felten & Guilleaume Energie Vandringsfältledning
AUPO307296A0 (en) * 1996-10-18 1996-11-14 Erico Lightning Technologies Pty Ltd An improved lightning conductor
DE19728940A1 (de) * 1997-07-07 1999-01-14 Alsthom Cge Alcatel Kabel mit leitfähiger Schicht
US6514608B1 (en) * 1998-07-10 2003-02-04 Pirelli Cable Corporation Semiconductive jacket for cable and cable jacketed therewith
GB2350476A (en) * 1999-05-28 2000-11-29 Asea Brown Boveri A power cable
FR2805656B1 (fr) * 2000-02-24 2002-05-03 Cit Alcatel Cable d'energie haute et tres haute tension a courant continu

Also Published As

Publication number Publication date
DE502004011722D1 (de) 2010-11-18
DE10322379A1 (de) 2004-12-02
EP1480230A3 (fr) 2005-11-16
EP1480230A2 (fr) 2004-11-24
CN100433199C (zh) 2008-11-12
CN1551248A (zh) 2004-12-01
ATE484061T1 (de) 2010-10-15

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