DE899977C - Transformer with auxiliary windings - Google Patents

Transformer with auxiliary windings

Info

Publication number
DE899977C
DE899977C DEA12440D DEA0012440D DE899977C DE 899977 C DE899977 C DE 899977C DE A12440 D DEA12440 D DE A12440D DE A0012440 D DEA0012440 D DE A0012440D DE 899977 C DE899977 C DE 899977C
Authority
DE
Germany
Prior art keywords
auxiliary
transformer
auxiliary windings
core
window
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
Application number
DEA12440D
Other languages
German (de)
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.)
AEG AG
Original Assignee
AEG AG
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 AEG AG filed Critical AEG AG
Priority to DEA12440D priority Critical patent/DE899977C/en
Application granted granted Critical
Publication of DE899977C publication Critical patent/DE899977C/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
    • H01F27/38—Auxiliary core members; Auxiliary coils or windings
    • H01F27/385—Auxiliary core members; Auxiliary coils or windings for reducing harmonics

Landscapes

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

Description

Die Erfindung betrifft einen Transformator mit Hilfswicklungen, die nur einen Teil des Schenkels oder Eisenkernes umschlingen und :durch besondere Fenster in :dem Eisenkern hindurchgeführt sind. Ein solcher Fall liegt beispielsweise vor bei Transformatoren mit Oberwellenkompensation nachdem Prinzip,der magnetischen Stern-Dreieck-Schaltung.The invention relates to a transformer with auxiliary windings that wrap around only part of the leg or iron core and: through special windows in: are passed through the iron core. Such a case exists, for example for transformers with harmonic compensation based on the principle of magnetic Star-delta connection.

Bisher war es üblich, diese Hilfsfenster in dem Transformatorkern mit parallelen Begrenzungsflächen auszuführen. Die Hilfswicklungen. können aber durch diese Fenster hindurch nur mit einem beschränkten ,Zug gewickelt werden, wodurch die mechanische Festigkeit der Hilfsspulen leidet. Es kann :daher unter der Einwirkung von Kurzsohlußkräften oder dergleichen zu 'einer Lageränderung der Spulen kommen, was. zu nachteiligen Erscheinungen, z. B. zu örtlichen Übertemperaturen an der Wicklung führen kann. -Die Erfindung vermeidet diese Nachteile dadurch, daß der Querschnitt der Hilfsfenster sich nach .der Kernoberfläche hin erweitert. Hierdurch . ist es möglich, nicht nur dieHilfswicklungen mechanisch fester herzustellen, sondern es wird auch für eine ausreichende Ölströmung ,durch die- H.ilfsfdnster gesorgt, so .daß schädliche Übertemperaturen- vermieden werden. Der Materialaufwand für die Kernquerschnitte bleibt dabei im wesentlichen der ,gleiche. Es wird lediglich die Schichtanordnung eine andere.So far it was common to have these auxiliary windows in the transformer core to be carried out with parallel boundary surfaces. The auxiliary windings. but can through this window can only be wound with a limited pull, whereby the mechanical strength of the auxiliary coils suffers. It can: therefore under the influence short solenoid forces or the like lead to a change in the position of the coils, What. to adverse phenomena, e.g. B. to local excess temperatures on the winding can lead. -The invention avoids these disadvantages in that the cross-section the auxiliary window widens towards the core surface. Through this. is it possible to make not only the auxiliary windings mechanically stronger, but it there is also a sufficient flow of oil through the auxiliary window, see above .that harmful excess temperatures are avoided. The cost of materials for the The core cross-section remains essentially the same. It just gets the Another layer arrangement.

Nachstehend wird die Erfindung an Hand der Zeichnung noch näher erläutert. In Fi.g. i und. 2 ist zunächst in einer teilweisen Darstellung die bisherige Ausführung gezeigt. Dabei bedeuten i den Transformatb-rkern, 2 das Hauptfenster, 3 das Hilfsfenster und ¢ die Hilfswicklungen;; Fig. 3 zeigt demgegenüber ein Ausführungsbeispiel der Erfindung. Der wesentliche Unterschied gegenüber der bekannten Anordnung besteht darin, daß der Querschnitt des Hilfsfensters 3 sich nach der Oberfläche des Kernes i erweitert; Fig.4 sohldeßlidh bringt ein anderes Ausfü!hrungsbeispiel nach,der Erfindung, bei dem sowohl die obere als auch -die untere Begrenzungsfläche des Hilfsfensters 3 stufenförmig nach der Kernoberfläche hin zurücktritt.The invention is explained in more detail below with reference to the drawing. In Fi.g. i and. 2 is initially the previous version in a partial representation shown. Here i mean the transformer core, 2 the main window, 3 the auxiliary window and ¢ the auxiliary windings ;; In contrast, Fig. 3 shows an embodiment of the Invention. The main difference compared to the known arrangement is in that the cross section of the auxiliary window 3 follows the surface of the core i expanded; 4 Soldeßlidh brings another embodiment example, the Invention, in which both the upper and the lower boundary surface of the auxiliary window 3 stepped back towards the core surface.

Claims (1)

PATE-NTANSPRUCIT: Transformator mit Hilfswicklungen, die durch besondere Hilfsfenster .durch den Kern hindurchgeführt sind, dadurch gekennzeichnet, .daß der Querschnitt :der Hilfsfenster sich nach der Kernoberfläche hin erweitert.PATE-NTANSPRUCIT: transformer with auxiliary windings driven by special Auxiliary windows .are passed through the core, characterized in that .that the cross-section: the auxiliary window widens towards the core surface.
DEA12440D 1944-04-02 1944-04-02 Transformer with auxiliary windings Expired DE899977C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEA12440D DE899977C (en) 1944-04-02 1944-04-02 Transformer with auxiliary windings

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA12440D DE899977C (en) 1944-04-02 1944-04-02 Transformer with auxiliary windings

Publications (1)

Publication Number Publication Date
DE899977C true DE899977C (en) 1953-12-17

Family

ID=6922515

Family Applications (1)

Application Number Title Priority Date Filing Date
DEA12440D Expired DE899977C (en) 1944-04-02 1944-04-02 Transformer with auxiliary windings

Country Status (1)

Country Link
DE (1) DE899977C (en)

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