DE287323C - - Google Patents

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Publication number
DE287323C
DE287323C DENDAT287323D DE287323DA DE287323C DE 287323 C DE287323 C DE 287323C DE NDAT287323 D DENDAT287323 D DE NDAT287323D DE 287323D A DE287323D A DE 287323DA DE 287323 C DE287323 C DE 287323C
Authority
DE
Germany
Prior art keywords
conductors
parallel
entanglement
groove
bar
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.)
Active
Application number
DENDAT287323D
Other languages
German (de)
Publication of DE287323C publication Critical patent/DE287323C/de
Active legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K3/00Details of windings
    • H02K3/04Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
    • H02K3/12Windings characterised by the conductor shape, form or construction, e.g. with bar conductors arranged in slots
    • H02K3/14Windings characterised by the conductor shape, form or construction, e.g. with bar conductors arranged in slots with transposed conductors, e.g. twisted conductors

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Coils Of Transformers For General Uses (AREA)
  • Windings For Motors And Generators (AREA)

Description

KAISERLICHESIMPERIAL

PATENTAMT.PATENT OFFICE.

Es ist bekannt, die Leiter elektrischer Maschinen aus parallelgeschalteten, gegeneinander isolierten und verdrillten Stäben oder Drähten herzustellen, um die von der einseitigen Strom-Verdrängung in den Nuten herrührenden zusätzlichen Kupferverluste zu verringern. Die Verdrillung kann in bekannter Weise im Innern der Nut oder in den Stirnverbindungen liegen.It is known that the conductors of electrical machines from parallel-connected, against each other to produce isolated and twisted rods or wires in order to avoid the one-sided current displacement to reduce additional copper losses originating in the grooves. the Twisting can be done in a known manner in the interior of the groove or in the end connections lie.

ίο Das Charakteristische der Verschränkung ist eine solche Leiterführung, daß die Summe der von irgendeiner, möglichen Strombahn umschlossenen Nutkraftlinien (Σ N) ein Minimum wird. Bei der gewöhnlichen Verschränkung, bei der der oberste Stab der einen Nut zum untersten Stab der nächsten, der zweite Stab zum zweituntersten Stab der nächsten Nut wird usf. (vgl. Fig. 1), wird die Forderung Σ (N) = Minimum im allgemeinen deshalb nicht erfüllt, weil das Nutenfeld mit der Entfernung vom Nutengrund wächst (vgl. Fig. 2).ίο The characteristic of the entanglement is such a conductor routing that the sum of the slot force lines enclosed by any possible current path (Σ N) becomes a minimum. In the usual entanglement, in which the top bar of one groove becomes the bottom bar of the next, the second bar becomes the second bar from the next groove, and so on (see Fig. 1), the requirement Σ (N) = minimum in general therefore not fulfilled because the slot field grows with the distance from the slot base (see. Fig. 2).

Bei nur zwei parallelen Drähten (vgl. Fig. 3) ist ohne weiteres zu erreichen, daß Σ (N) — ο wird. Ebenso entspricht die gewöhnliche Verschränkung bei drei Stäben (Fig. 4), bei der Ober litze und Unterlitze nach jeder halben Windung verschränkt sind und die Mittellitze glatt durchgeführt wird, mit für den praktischen Betrieb genügender Annäherung der genannten Forderung Σ (N) = Minimum.With only two parallel wires (see. Fig. 3) can easily be achieved that Σ (N) - ο. Likewise, the usual entanglement of three rods (Fig. 4), in which the top strand and bottom strand are interlaced after every half turn and the middle strand is carried out smoothly, with a sufficient approximation of the stated requirement Σ (N) = minimum for practical operation.

Gemäß der Erfindung wird eine größere Anzahl von parallelen Leitern in der Weise verschränkt, daß je zwei bzw. drei Leiter unter sich und die hieraus gebildeten Leitergruppen gegeneinander verschränkt werden. Fig. 5 zeigt die neue Art der Verschränkung für vier Leiter, Fig. 6 für sechs Leiter. In gleicher Weise lassen sich alle praktisch vorkommenden Anzahlen von Leitern parallel schalten ohne nennenswerte Wirbelstrombildung.According to the invention, a larger number of parallel conductors are interlaced in such a way that that two or three leaders among themselves and the leader groups formed from them are entangled against each other. Fig. 5 shows the new type of entanglement for four Ladder, Fig. 6 for six conductors. In the same way, all practically occurring Connect numbers of conductors in parallel without significant eddy currents.

Diese Verschränkung höherer Ordnung kann nur dann in der gleichen Lochspule erfolgen, wenn zwei oder mehr Leiter nebeneinander in der Nut liegen, andernfalls muß sie beim Übergang von einer Lochspule in die andere oder von einer Spule in die andere erfolgen.This higher order entanglement can only take place in the same perforated coil if two or more conductors are next to each other in the groove, otherwise it must be at Transition from one perforated coil to the other or from one coil to the other take place.

Es sei noch darauf hingewiesen, daß beispielsweise bei zwei parallelen Litzen nur eine Verschränkung pro Phase erforderlich ist, wenn die Parallelschaltung nur an dem Phasenanfang und -ende erfolgt. Ähnliches gilt bei drei-, vier- und sechsfacher Parallelschaltung.It should be noted that, for example, with two parallel strands only one Entanglement per phase is required if the parallel connection is only at the beginning of the phase and end takes place. The same applies to three, four and six-fold parallel connections.

Claims (1)

Patent-Anspruch:Patent claim: Nutenwicklung für elektrische Maschinen mit mehr als drei parallelgeschalteten Teilleitern, dadurch gekennzeichnet, daß je oder drei Leiter unter sich und dieGroove winding for electrical machines with more than three parallel-connected partial conductors, characterized in that each or three conductors among themselves and the zweitwo hieraus gebildeten Leitergruppen gegeneinander verschränkt werden.groups of leaders formed from this are interlaced with one another. Hierzu ι Blatt Zeichnungen.For this purpose ι sheet of drawings.
DENDAT287323D Active DE287323C (en)

Publications (1)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1016650B (en) * 1955-07-14 1957-09-26 Heinrich Meier Pliers
DE1104049B (en) * 1956-04-16 1961-04-06 Allis Chalmers Mfg Co Winding for dynamo machines
DE1112194B (en) * 1957-03-06 1961-08-03 Allis Chalmers Mfg Co Winding for dynamo machines
FR2329092A1 (en) * 1975-10-22 1977-05-20 Bbc Brown Boveri & Cie Multi-stack Roebel conductor for large generators - has transposition between stacks on end winding overhang changing left hand stack to right hand stack at coil nose

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1016650B (en) * 1955-07-14 1957-09-26 Heinrich Meier Pliers
DE1104049B (en) * 1956-04-16 1961-04-06 Allis Chalmers Mfg Co Winding for dynamo machines
DE1112194B (en) * 1957-03-06 1961-08-03 Allis Chalmers Mfg Co Winding for dynamo machines
FR2329092A1 (en) * 1975-10-22 1977-05-20 Bbc Brown Boveri & Cie Multi-stack Roebel conductor for large generators - has transposition between stacks on end winding overhang changing left hand stack to right hand stack at coil nose

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