DE1563224A1 - Arrangement for current sharing in diverter switches - Google Patents

Arrangement for current sharing in diverter switches

Info

Publication number
DE1563224A1
DE1563224A1 DE19661563224 DE1563224A DE1563224A1 DE 1563224 A1 DE1563224 A1 DE 1563224A1 DE 19661563224 DE19661563224 DE 19661563224 DE 1563224 A DE1563224 A DE 1563224A DE 1563224 A1 DE1563224 A1 DE 1563224A1
Authority
DE
Germany
Prior art keywords
arrangement
parallel
current
contacts
current sharing
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
DE19661563224
Other languages
German (de)
Other versions
DE1563224B2 (en
DE1563224C3 (en
Inventor
Taube Dipl-Ing Johannes
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.)
Licentia Patent Verwaltungs GmbH
Original Assignee
Licentia Patent Verwaltungs GmbH
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 Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Publication of DE1563224A1 publication Critical patent/DE1563224A1/en
Publication of DE1563224B2 publication Critical patent/DE1563224B2/en
Application granted granted Critical
Publication of DE1563224C3 publication Critical patent/DE1563224C3/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F29/00Variable transformers or inductances not covered by group H01F21/00
    • H01F29/02Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings
    • H01F29/025Constructional details of transformers or reactors with tapping on coil or windings
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M5/00Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
    • H02M5/02Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc
    • H02M5/04Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters
    • H02M5/10Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using transformers
    • H02M5/12Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using transformers for conversion of voltage or current amplitude only

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Coils Of Transformers For General Uses (AREA)
  • Transformers For Measuring Instruments (AREA)
  • Ac-Ac Conversion (AREA)

Description

Anordnung. zur Stromteilung bei laetumschaltern Bei mehreren parallel geschalteten lastumschalterkontakten ist eine gleichmäßige Aufteilung des Stromes auf alle K"ontakte und damit eine gleichmäßige Belastung nicht -immer gewährleistet. Um eine derartige Stromaufteilung-herbeizuführen, sind a®hon Stromteileranordnungen bekannt geworden,. bei denen fUr jeden zu teilenden Stromfluß drei Magnetkerne mit je zwei in ihrer magnetisierenden Wirkung@eich gegensei- tig aufhebenden Wicklungen vorgesehen eind, wobei jeder der drei, die parallel geschalteten Kontaktgruppen des Regel- schalters durchfließenden Teilströme in zyklischer Folge nacheinander die magnetisch-positive Wicklung eines Magnetkernes und die-magnetisch negative Wicklung eines anderen Magnetkernes durchläuft. Auf diese Weise wird eine gegen- seitige Beeinflussung der parallelen Teilströme erreicht, derart, daß jeder der parallelen Teilkontakte mit dem@gleichen' Strom belastet wird. Diese Anordnung erfordert jedoch einen ' relativ großen Aufwand und nimmt auch innerhalb des Lastum- schaltergehö,usee sehr viel Platz in Anspruch, sind doch bei drei parallelen Kontakten insgesamt sechs dieser Stromteiler im Iastumchaltergehäuse unterzubringen. Der Platzbedarf wird noch größer, wenn die Stromteiler für Dauerein- echaltung ausgelegt sind. Werden nie dagegen nur während den Umschaltvorganges wirken», so müssen Zusatikontakte vorgesehen werden, über die die Wicklungen der Stromteiler während des normalen Betriebes überbrückt werden. B$ ist auch schon vorgeschlagen worden, jede Phase den Transformators in mehrere parallele Strompfade aufzuteilen und auf diese Weise die erwünschte Stromteilung an den Kontakten des Zastumechalters schon in der Wicklung des Transformators einzuleiten. Dabei setzen sich die an sich. schon parallel gewickelten #indungen über parallele Wähler- bzw. Wenderkontäkte bis zu den parallelen iaatumsohalterkontakten fort. Dieses Verfahren hat zwar den Vorteil, daß kein zusätzlicher Raum für Stromteileranordnungen benötigt wird, jedoch ist zur einwandfreien Stromteilung eine sorgfältige ' Isolation zwischen den einzelnen Strompfaden erforderlich, ebenso wie beim Einbau von Wähler und Wender ein größerer Aufwand an Arbeitszeit erforderlich ist, um alle Anschlüsse an den einzelnen Kontakten, die sich entsprechend der An- zahl der parallelen hastumsohalterkontakte vervielfachen, herzustellen. Die Erfindung vermeidet die Nachteile der oben geschilderten Maßnahmen. Sie geht von*der Tatsache aus, daB bereits längere Zuleitungen von den An$apfungen zu den Kontakten eine gewisse Stromaufteilung bewirken. Dieser Effekt wird erfindungsgemäß dadurch verstärkt, daß die zwei parallelen Teilleiter einer Phase nacheinander gegenläufig durch alle Fenster eines mehrechenkligen Magnetkerne geführt sind: Durch diese Maßnahmen werden die Ströme in den beiden Teilleitern derart miteinander gekoppelt, daß sich die von ihnen in dem Magnetkern er-regten Durchflutungen gegenseitig aufheben, wenn beide Teil- ströme gleich groß sind. Überwiegt einer der Teilströme, so ist das Gleichgewicht der Durehflutungen gestört, d. h. in dem zweiten Teilleiter wird eine dem Unterschied der Durch flutungen entsprechende Spannung induziert, die einen Ausgleich der Ströme herbeiführt. Die Pig. 1 und 2 zeigen ein Ausführungsbeispiel der Erfindung. Die Wicklungr .izapfung 1 ist dabei in die beiden parallelen Teilleiter 2 und 3 aufgespalten, die die Fenster des Magnetkernes 4 nacheinander gegenläufig durchlaufen. Die Teilleiter sind dabei durch die Isolierschichten 5 von dem Magnetkern getrennt, um einen Windungeschluß zu verhindern. .Ein wesentlicher Vorteil der Erfindung liegt darin, daß sich die Querschnitte aller Schenkel des Magnetkernes hinsichtlich ihrer transformatorischen Wirkung addieren, ao daB der Magnetkern und somit die ganze Stromteileranordnung sehr flach ausgebildet werden kann und damit relativ wenig Raum beansprucht. Die erfindungsgemäße Anordnung kann auch im Zuge der'heitungeführung von der Wioklungsanzapfung zum Anschluß am Wähler bzw. vom Wähler zum lastumschalter vorgesehen werden. Als Material für die Teilleiter kann sowohl ein flexibler Leiter als auch ein massives Leiter- material vorgesehen werden. In diesem Falle werden die Teilleiter $weckmäßigerweise entsprechend ihrem, beispiels- weise aus Pig. 2 ersichtlichen, Verlauf vorgeformt und an- schließend die einzelnen Bleche des Magnetkernes von beiden Seiten eingeschichtet.Arrangement. for current sharing in laetumschaltern case of several parallel-connected diverter switch contacts is a uniform distribution ONTACT of the current on all K "and thus does not ensure a uniform load-always. In order to effect current sharing-such, a®hon current divider arrangements have become known ,. where for every mutual tig canceling windings eind to divide flow of current three magnetic cores, each with two in their magnetizing effect @ calibration provided, each of the three parallel-connected groups of contacts of the control switch by flowing substreams in a cyclic sequence consecutively the magnetically-positive winding a magnetic core and passes -magnetisch negative winding of another magnetic core. In this way, a mutual influence of the parallel sub-streams, is achieved in such a way that each of the parallel part contacts with the @ same 'current is charged However, this arrangement requires a.' relatively large Au f wall and also takes up a lot of space inside the diverter switch housing, since with three parallel contacts a total of six of these current dividers can be accommodated in the diverter switch housing. The space becomes even greater when the power dividers are designed for echaltung Maximum continuous. If, on the other hand, it is never only effective during the switching process ”, additional contacts must be provided via which the windings of the current divider are bridged during normal operation. It has also already been proposed to divide each phase of the transformer into several parallel current paths and in this way to initiate the desired current division at the contacts of the charging switch in the winding of the transformer. They sit down to themselves. connections that have already been wound in parallel via parallel voter or reverser contacts to the parallel iaatumso holder contacts . Although this method has the advantage that no additional space is required for flow divider arrangements, careful insulation between the individual flow paths is required for correct flow sharing, as is the installation of the selector and turner, which requires a greater amount of labor to make all connections on the individual contacts, which multiply according to the number of parallel hastumso holder contacts . The invention avoids the disadvantages of the measures outlined above. It is based on the fact that even longer leads from the connections to the contacts cause a certain current distribution. According to the invention, this effect is reinforced by the fact that the two parallel subconductors of one phase are guided in opposite directions through all the windows of a multi-rake magnetic core: These measures couple the currents in the two subconductors so that they are excited in the magnetic core Mutually cancel the flooding when both partial flows are equal. If one of the partial currents predominates , the equilibrium of the flooding is disturbed, ie a voltage corresponding to the difference in the flooding is induced in the second sub-conductor, which balances the currents. The Pig. 1 and 2 show an embodiment of the invention. The winding tap 1 is split into the two parallel sub-conductors 2 and 3, which run through the windows of the magnetic core 4 one after the other in opposite directions. The sub-conductors are separated from the magnetic core by the insulating layers 5 in order to prevent a winding short. A major advantage of the invention is that the cross-sections of all legs of the magnet core add up in terms of their transforming effect, ao that the magnet core and thus the entire flow divider arrangement can be made very flat and thus take up relatively little space. The arrangement according to the invention can also be provided in the course of derailing the connection from the connection tap to the connection to the selector or from the selector to the load switch . Both a flexible conductor and a solid conductor material can be provided as the material for the sub-conductors . In this case , the sub-conductors are appropriately used, for example from Pig. 2 , the course is pre-formed and then the individual sheets of the magnetic core are layered on both sides.

Claims (1)

dnordou. zur Otrertil=g bei 14esfrohalte= ton I'r4»lor- matoreßt dadaxo ,gwtacex@n:eooi@, da# die arrei paralltlen e611#. leiter oner ]Pbaa0 .gaohonander iga*,äufl$_.durob alle ]NA-' eter *tu eereettldige ltagstl@axrsd efart ond* = '. .
dnordou. to the Otrertil = g at 14 esfrohalte = ton I ' r4 »lor- matoreßt dadaxo, gwtacex @ n: eooi @, da # the arrei paralltlen e611 #. head oner] Pbaa0 .gaohonander iga *, äufl $ _. durob all] NA- ' eter * tu eereettldige ltagstl @ axrsd efart ond * = '. .
DE19661563224 1966-05-26 1966-05-26 Arrangement for the equal distribution of the current on two parallel switched diverter switch contacts of a step-adjustable transformer for each phase Expired DE1563224C3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEL0053698 1966-05-26

Publications (3)

Publication Number Publication Date
DE1563224A1 true DE1563224A1 (en) 1970-02-12
DE1563224B2 DE1563224B2 (en) 1974-11-21
DE1563224C3 DE1563224C3 (en) 1975-07-03

Family

ID=7275594

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19661563224 Expired DE1563224C3 (en) 1966-05-26 1966-05-26 Arrangement for the equal distribution of the current on two parallel switched diverter switch contacts of a step-adjustable transformer for each phase

Country Status (1)

Country Link
DE (1) DE1563224C3 (en)

Also Published As

Publication number Publication date
DE1563224B2 (en) 1974-11-21
DE1563224C3 (en) 1975-07-03

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C3 Grant after two publication steps (3rd publication)