CH337935A - High-current choke coil for direct current systems - Google Patents

High-current choke coil for direct current systems

Info

Publication number
CH337935A
CH337935A CH337935DA CH337935A CH 337935 A CH337935 A CH 337935A CH 337935D A CH337935D A CH 337935DA CH 337935 A CH337935 A CH 337935A
Authority
CH
Switzerland
Prior art keywords
choke coil
current
conductor
coil
direct current
Prior art date
Application number
Other languages
German (de)
Inventor
Bjarne Dipl Ing Storsand
Original Assignee
Oerlikon Maschf
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 Oerlikon Maschf filed Critical Oerlikon Maschf
Publication of CH337935A publication Critical patent/CH337935A/en

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F37/00Fixed inductances not covered by group H01F17/00
    • H01F37/005Fixed inductances not covered by group H01F17/00 without magnetic core
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F30/00Fixed transformers not covered by group H01F19/00
    • H01F30/06Fixed transformers not covered by group H01F19/00 characterised by the structure
    • H01F30/08Fixed transformers not covered by group H01F19/00 characterised by the structure without magnetic core

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Coils Of Transformers For General Uses (AREA)
  • Coils Or Transformers For Communication (AREA)

Description

  

   <Desc/Clms Page number 1> 
    Hochstromdrosselspule   für Gleichstromanlagen Die Erfindung betrifft eine    Hochstromdrossel-      spule   für Gleichstromanlagen, mit mehreren, die Spule in axialer Richtung durchsetzenden Spannbolzen. Die Erfindung besteht darin, dass die Spule aus axial    aneinandergereihten,   durch    Isolierzwischen-      lagen   voneinander getrennten Windungen eines    flachen,      hochkantgewickelten   Leiters besteht, der    Bohrungen   aufweist, durch welche die Spannbolzen hindurchgehen.

   Durch ein solches Zusammenpressen von Windungen eines flachen Leiters mittels Spannbolzen, die durch das Leitermaterial selbst hindurchgehen, lässt sich ein starrer    hohlzylinderförmiger      Spulenkörper   ausserordentlich hoher mechanischer Festigkeit herstellen, was bei den    Hochstromdrossel-      spulen   von grosser Bedeutung ist, da diese, in Gleichstromanlagen zum Ausgleichen und Glätten des Stromes sowie zum Begrenzen des Stromanstieges im    Kurzschlussfall   dienenden Drosselspulen beträchtlichen Beanspruchungskräften ausgesetzt sind. Diese rühren einerseits von den mitunter sehr hohen Kurzschlussströmen und anderseits von den dauernd pulsierenden magnetischen Kräften der Oberwellen her. 



  Vorzugsweise beträgt die Breite des zum Beispiel aus Aluminium oder einer Aluminiumlegierung hergestellten flachen Leiters der erfindungsgemässen Drosselspule    1/,   bis    1("   deren Innendurchmessers. Der Leiter darf deshalb so breit sein, weil beim Gleichstrom die Oberwellen nur unwesentliche Zusatzverluste    verursachen.   Für die Herstellung einer Spule mit einem Innendurchmesser von 1 m kann beispielsweise Flachmaterial von 10 cm Breite, also    '/1o   des Innendurchmessers, und 10 bis 20 mm Dicke verwendet werden. 



  Da die erfindungsgemässe    Hochstromdrosselspule   auch zur Begrenzung des Stromanstieges im Kurzschlussfall dient, ist neben der mechanischen Festig,-    keit   ferner von Vorteil, dass beim Kurzschluss der Gleichstromwiderstand infolge Stromverdrängung um ein Mehrfaches ansteigt, was eine zusätzliche Dämpfung des Kurzschlusses bewirkt. 



  Es empfiehlt sich, den Leiter der erfindungsgemässen Drosselspule in bezug auf seine Breite jeweils in der Mitte zu durchbohren. Es können dann    Spannbolzen   aus gewöhnlichem Stahl verwendet werden, da in der Leitermitte die Feldstärke im Vergleich zum Hauptfeld sehr gering ist. 



  In der Zeichnung ist als Ausführungsbeispiel des Erfindungsgegenstandes ein Teil einer Hochstromdrosselspule vereinfacht dargestellt, und zwar in    Fig.   1 in Ansicht und in    Fig.   2 im Längsschnitt. 



  Mit 1 ist ein die Spule bildender, hochkantgewickelter, flacher Aluminiumleiter bezeichnet, der an seinen beiden Enden 2, 3 mit den nicht gezeigten Anschlüssen verbunden ist. Der Leiter 1 weist gleichmässig am Umfang der Spule verteilte und in der Mitte des Leiters 1 angeordnete    Bohrungen   4 auf, durch die mit einer    Isolierhülse   5 versehene Spannbolzen 6 hindurchgehen. Die einzelnen Windungen des Leiters 1 sind voneinander durch    Isolierringe   7 getrennt und mittels Isolierscheiben 8,    Presstellern   9,    Druckfedern   10, Druckscheiben 11 und Muttern 12 zusammengepresst.



   <Desc / Clms Page number 1>
    High-current choke coil for direct current systems The invention relates to a high-current choke coil for direct current systems, with several clamping bolts penetrating the coil in the axial direction. The invention consists in that the coil consists of axially strung together turns of a flat, edgewise-wound conductor, separated from one another by insulating layers, which has bores through which the tensioning bolts pass.

   Such a compression of turns of a flat conductor by means of tensioning bolts, which pass through the conductor material itself, allows a rigid, hollow cylindrical coil body to be produced with an extraordinarily high mechanical strength, which is of great importance for high-current choke coils, as these are used in DC systems for balancing and Smoothing the current as well as limiting the current rise in the event of a short circuit serving choke coils are exposed to considerable stress forces. These arise on the one hand from the sometimes very high short-circuit currents and on the other hand from the continuously pulsating magnetic forces of the harmonics.



  The width of the flat conductor, made for example of aluminum or an aluminum alloy, of the choke coil according to the invention is preferably 1 /, to 1 ("its inner diameter. The conductor may therefore be so wide because the harmonics cause only insignificant additional losses with direct current Coil with an inside diameter of 1 m, for example, flat material 10 cm wide, that is 1/10 of the inside diameter, and 10 to 20 mm thick can be used.



  Since the high-current choke coil according to the invention also serves to limit the increase in current in the event of a short circuit, in addition to mechanical strength, it is also advantageous that in the event of a short circuit, the direct current resistance rises several times as a result of current displacement, which causes additional damping of the short circuit.



  It is advisable to drill through the head of the choke coil according to the invention in the middle in relation to its width. Tensioning bolts made of ordinary steel can then be used, since the field strength in the middle of the conductor is very low compared to the main field.



  In the drawing, as an exemplary embodiment of the subject matter of the invention, part of a high-current choke coil is shown in simplified form, namely in FIG. 1 in a view and in FIG. 2 in longitudinal section.



  1 with an edgewise wound, flat aluminum conductor which forms the coil and which is connected at its two ends 2, 3 to the connections (not shown). The conductor 1 has bores 4 evenly distributed around the circumference of the coil and arranged in the center of the conductor 1, through which the clamping bolts 6 provided with an insulating sleeve 5 pass. The individual turns of the conductor 1 are separated from one another by insulating rings 7 and are pressed together by means of insulating washers 8, pressure plates 9, compression springs 10, pressure washers 11 and nuts 12.

 

Claims (1)

PATENTANSPRUCH Hochstromdrosselspule für Gleichstromanlagen, mit mehreren, die Spule in axialer Richtung durchsetzenden Spannbolzen, dadurch gekennzeichnet, dass die Spule aus axial aneinandergereihten, durch Iso- lierzwischenlagen voneinander getrennten Windungen eines flachen, hochkantgewickelten Leiters besteht, der Bohrungen aufweist, durch welche die Spannbolzen hindurchgehen. <Desc/Clms Page number 2> UNTERANSPRÜCHE 1. Hochstromdrosselspule nach Patentanspruch, dadurch gekennzeichnet, dass die Breite des flachen Leiters 1J" bis 1J2. des Innendurchmessers der Spule beträgt. 2. PATENT CLAIM High-current choke coil for direct current systems, with several tensioning bolts penetrating the coil in the axial direction, characterized in that the coil consists of axially strung together turns of a flat, edgewise-wound conductor, which has bores through which the tensioning bolts pass. <Desc / Clms Page number 2> SUBClaims 1. High-current choke coil according to patent claim, characterized in that the width of the flat conductor is 1J "to 1J2. Of the inside diameter of the coil. Hochstromdrosselspule nach Patentanspruch, dadurch gekennzeichnet, dass der Leiter aus Aluminium oder einer Aluminiumlegierung besteht. 3. Hochstromdrosselspule nach Patentanspruch, dadurch gekennzeichnet, dass der Leiter in bezug auf seine Breite jeweils in der Mitte durchbohrt ist. High-current choke coil according to claim, characterized in that the conductor consists of aluminum or an aluminum alloy. 3. High-current choke coil according to claim, characterized in that the conductor is pierced in relation to its width in the middle.
CH337935D 1956-03-06 1956-03-06 High-current choke coil for direct current systems CH337935A (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
CH337935T 1956-03-06
CH2901717X 1956-03-06
CH1168801X 1956-03-06
CH802856X 1956-03-06
CH1042745X 1956-03-06

Publications (1)

Publication Number Publication Date
CH337935A true CH337935A (en) 1959-04-30

Family

ID=50190082

Family Applications (1)

Application Number Title Priority Date Filing Date
CH337935D CH337935A (en) 1956-03-06 1956-03-06 High-current choke coil for direct current systems

Country Status (5)

Country Link
US (1) US2901717A (en)
CH (1) CH337935A (en)
DE (1) DE1042745B (en)
FR (1) FR1168801A (en)
GB (1) GB802856A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3046505C2 (en) * 1980-12-10 1985-09-19 Transformatoren Union Ag, 7000 Stuttgart Suction choke for high-current transformers
DE4305521C2 (en) * 1993-02-17 1996-02-01 Aeg Tro Transformatoren Gmbh Disc winding for an iron-core, coolant-cooled choke coil
DE112016007527B4 (en) * 2016-12-19 2024-08-01 Mitsubishi Electric Corporation AIR CORE CHOKE COIL FOR A RAIL VEHICLE
DE112017007718T5 (en) * 2017-07-03 2020-03-19 Mitsubishi Electric Corporation Air core choke coil for a vehicle
JP6625277B2 (en) * 2017-07-06 2019-12-25 三菱電機株式会社 Vehicle reactor

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US848676A (en) * 1906-03-17 1907-04-02 Joseph Murgas Electric transformer.
DE333490C (en) * 1919-06-27 1921-03-01 Siemens & Halske Akt Ges Overvoltage protection coil
CH147585A (en) * 1929-04-26 1931-06-15 Siemens Ag Choke coil.
DE550581C (en) * 1929-10-10 1932-05-12 Siemens Schuckertwerke Akt Ges Choke coil for high voltages with bracing bolts made of insulating material and several disc coil groups lined up in an axial direction
US2180513A (en) * 1936-07-27 1939-11-21 Kuhlman Electric Company Apparatus for relieving stresses in welds
DE920261C (en) * 1942-04-01 1954-11-18 Siemens Ag Winding composed of disc coils with conductor bundles consisting of more than two parallel partial conductors
DE808138C (en) * 1948-10-02 1951-07-12 Siemens & Halske A G Coil wound with a square conductor, especially a choke coil
DE931298C (en) * 1953-04-02 1955-08-04 Huels Chemische Werke Ag Short-circuit current limiting reactor

Also Published As

Publication number Publication date
FR1168801A (en) 1958-12-17
US2901717A (en) 1959-08-25
GB802856A (en) 1958-10-15
DE1042745B (en) 1958-11-06

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