US1551960A - Apparatus for diminishing magnetic dispersion in electric transformers - Google Patents

Apparatus for diminishing magnetic dispersion in electric transformers Download PDF

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Publication number
US1551960A
US1551960A US474549A US47454921A US1551960A US 1551960 A US1551960 A US 1551960A US 474549 A US474549 A US 474549A US 47454921 A US47454921 A US 47454921A US 1551960 A US1551960 A US 1551960A
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US
United States
Prior art keywords
winding
primary
transformer
windings
current
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
US474549A
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English (en)
Inventor
Kubler Johann
Marchand Robert
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.)
BBC Brown Boveri AG Germany
Original Assignee
Bbc Brown Boveri & Cie
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
Priority to CH93904D priority Critical patent/CH93904A/de
Priority to DEA33522D priority patent/DE387801C/de
Priority to GB1467321A priority patent/GB164017A/en
Priority to FR536103D priority patent/FR536103A/fr
Application filed by Bbc Brown Boveri & Cie filed Critical Bbc Brown Boveri & Cie
Priority to US474549A priority patent/US1551960A/en
Application granted granted Critical
Publication of US1551960A publication Critical patent/US1551960A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H01F27/346—Preventing or reducing leakage fields
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F29/00—Variable transformers or inductances not covered by group H01F21/00
    • H01F29/02—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings

Definitions

  • JOHANN K'U'BLER AND ROBERT MARGHAND OF BALDEN, SWITZERLAND, ASSIGNORS To AKTIENGESELLSCHAFT BROWN, BOVERI AND CIE., OF BADEN, SWITZERLAND.
  • Figure 1 is a diagram of connections for an ordinary regulable transformer
  • Figure 2 is a diagram of connections for a regulable transformer according to the invention.
  • Figures 3 and 4 show diagrammatieally a transformer constructed according to the invention, feeding a monophaseand a threephase vapour rectifier;
  • Figure 5 shows a manner of arranging the coils on the core of a transformer arranged according to the invention.
  • This dispersion is therefore injurious, and the present invention has for its object to provlde an improved apparatus for diminishing the dispersion in transformers that are adapted to be regulated by disconnectmg and connecting some of the turns.
  • this improved apparatus the portions of the one winding that are situated opposite the disconnectable and non-disconncctable portions of the other winding, are connected in parallel with each other.
  • the portion 0 is the secondary a; and opposite the portion (1 is the secondary 7/; the arrangement being such that (zis well interlinked with c, and 7) is well interlinked with (Z.
  • the windings (I- and 7) have the same number of turns and are connected in parallel with each other. ()f the secondary current i the portion z' traverses the winding n, whilst the other portion i traverses the winding 6.
  • Fig. 3 illustrates the case where the improved apparatus is used for feeding a mono-phase rectifier.
  • the primary P of the transformer T is connected to the alternating current supply circuit N,.
  • the winding a is provided with a central lead 1 constituting the negative main of the direct current supply circuit N
  • the anodes A and A are fed through the leads 1' and 1" in parallel from the windings a and b.
  • This construction allows also an advantageous arrangement of the windings on the iron core of the transformer.
  • the inner menace cylinder consists of the invariable'portion c' of the primary and the secondary I) which is situated opposite the disconnectable portion (1? of the primary.
  • the outer cylinder on the contrary consists of the secondary a and the disconnectable portion (2 of the primary.
  • the parts constituting the outer cylinder are well accessible in this construction, and their manufacture, connections and supervision are considerably facilitated.
  • Fig. 4 :N is the three-phase supply circuit to which the three-phase transformer T is connected.
  • the primary consists of the three phase windings P P P P and P P of which P P and P represent the constant, and P P and P represent the regulableportions of theprimary.
  • the secondary portions are so arranged that the secondary portions S S 8., are situated opposite the primary portions P P and P and the secondary portions 8,, S S, are situated opposite the primary portions P P and P the windings S 2 and S being connected in parallel with their res ective corresponding windings S S an S and have a common zero point 0.
  • This zero point 0 is connected to the negative main of the direct current supply circuit N, the positive main of which is connected to the cathode K of the rectifier G.
  • the anodes A A and A are connected to the free ends of the secondary windings. In this case also the inductive voltage drop of the transformer will be considerably less than is the case in the usual construction hitherto employed.
  • a transformer comprising a first winding having a regulable portion and a second winding having two portions connected permanently in parallel, the re lable portion of the first winding being ocated exactly opposite one portion of the second winding and the nonaegulable portion of the first winding being located opposite the second portion of said second winding.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Coils Of Transformers For General Uses (AREA)
  • Coils Or Transformers For Communication (AREA)
US474549A 1920-06-02 1921-06-02 Apparatus for diminishing magnetic dispersion in electric transformers Expired - Lifetime US1551960A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
CH93904D CH93904A (de) 1920-06-02 1920-06-02 Einrichtung zur Verminderung der Streuung bei durch Windungsab- und -zuschaltung regelbaren Transformatoren.
DEA33522D DE387801C (de) 1920-06-02 1920-06-08 Einrichtung zur Verminderung der Streuung eines durch Windungsab- und -zuschaltung regelbaren Transformators mit Zylinderwicklungen
GB1467321A GB164017A (enrdf_load_stackoverflow) 1920-06-02 1921-05-26
FR536103D FR536103A (fr) 1920-06-02 1921-05-28 Dispositif pour atténuer la dispersion dans les transformateurs à tension réglable par modification du nombre des spires en circuit
US474549A US1551960A (en) 1920-06-02 1921-06-02 Apparatus for diminishing magnetic dispersion in electric transformers

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH93904T 1920-06-02
DEA33522D DE387801C (de) 1920-06-02 1920-06-08 Einrichtung zur Verminderung der Streuung eines durch Windungsab- und -zuschaltung regelbaren Transformators mit Zylinderwicklungen
US474549A US1551960A (en) 1920-06-02 1921-06-02 Apparatus for diminishing magnetic dispersion in electric transformers

Publications (1)

Publication Number Publication Date
US1551960A true US1551960A (en) 1925-09-01

Family

ID=23884006

Family Applications (1)

Application Number Title Priority Date Filing Date
US474549A Expired - Lifetime US1551960A (en) 1920-06-02 1921-06-02 Apparatus for diminishing magnetic dispersion in electric transformers

Country Status (5)

Country Link
US (1) US1551960A (enrdf_load_stackoverflow)
CH (1) CH93904A (enrdf_load_stackoverflow)
DE (1) DE387801C (enrdf_load_stackoverflow)
FR (1) FR536103A (enrdf_load_stackoverflow)
GB (1) GB164017A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3193754A (en) * 1963-01-17 1965-07-06 Ite Circuit Breaker Ltd Reduced impedance transformer and rectifier busing

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1082996B (de) * 1956-12-15 1960-06-09 Pfaff Ag G M Regeleinrichtung fuer den Heizstrom einer Vorrichtung zur Nahtschweissung thermoplastischer Kunststoffe
CA1199694A (en) * 1982-06-23 1986-01-21 Hideki Masuhara Split structure type transformer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3193754A (en) * 1963-01-17 1965-07-06 Ite Circuit Breaker Ltd Reduced impedance transformer and rectifier busing

Also Published As

Publication number Publication date
DE387801C (de) 1924-01-04
GB164017A (enrdf_load_stackoverflow) 1922-07-13
CH93904A (de) 1922-04-01
FR536103A (fr) 1922-04-26

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