GB683621A - Improvements in or relating to electric transformers - Google Patents

Improvements in or relating to electric transformers

Info

Publication number
GB683621A
GB683621A GB2646249A GB2646249A GB683621A GB 683621 A GB683621 A GB 683621A GB 2646249 A GB2646249 A GB 2646249A GB 2646249 A GB2646249 A GB 2646249A GB 683621 A GB683621 A GB 683621A
Authority
GB
United Kingdom
Prior art keywords
primary
transformer
circuit
windings
flux
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
GB2646249A
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.)
General Electric Co PLC
Original Assignee
General Electric Co PLC
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 General Electric Co PLC filed Critical General Electric Co PLC
Priority to GB2646249A priority Critical patent/GB683621A/en
Publication of GB683621A publication Critical patent/GB683621A/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)
  • Regulation Of General Use Transformers (AREA)

Abstract

683,621. Transformers. GENERAL ELECTRIC CO., Ltd., and FRIEDLANDER, E. S. Oct. 13, 1950 [Oct. 14, 1949], No. 26462/49. Drawings to Specification. Class 38 (ii). An electric transformer having primary and secondary windings arranged on a limb of the transformer core, has an additional winding arranged to be connected to form a part of a circuit comprising two windings with equal numbers of turns both arranged to embrace the main magnetic flux in the transformer limb and to be connected in parallel as regards this main flux but to be connected in series as regards the leakage flux between the primary and secondary windings, the circuit being comprised of the additional winding and either the primary or secondary winding or a further additional winding, and having a high resistance compared with the resistance of the primary and secondary windings, so as to form a damping circuit to reduce or prevent oscillation due to the leakage flux. The additional windings are arranged so as to embrace the transformer leakage flux. A frequency responsive element, such as a capacitor, may be included in the damping circuit so as to reduce the circulating currents therein at the supply frequency. A resistance may also be placed in the damping circuit.
GB2646249A 1949-10-14 1949-10-14 Improvements in or relating to electric transformers Expired GB683621A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2646249A GB683621A (en) 1949-10-14 1949-10-14 Improvements in or relating to electric transformers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2646249A GB683621A (en) 1949-10-14 1949-10-14 Improvements in or relating to electric transformers

Publications (1)

Publication Number Publication Date
GB683621A true GB683621A (en) 1952-12-03

Family

ID=10244014

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2646249A Expired GB683621A (en) 1949-10-14 1949-10-14 Improvements in or relating to electric transformers

Country Status (1)

Country Link
GB (1) GB683621A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000022634A1 (en) * 1998-10-09 2000-04-20 Ir. Buro Vanderveen Power transformer with internal differential mode distortion cancellation

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000022634A1 (en) * 1998-10-09 2000-04-20 Ir. Buro Vanderveen Power transformer with internal differential mode distortion cancellation
US6087822A (en) * 1998-10-09 2000-07-11 Ir.Buro Vanderveen Power transformer with internal differential mode distortion cancellation
GB2363523A (en) * 1998-10-09 2001-12-19 Ir Buro Vanderveen Power transformer with internal differential mode distortion cancellation

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