GB725290A - Improvements in polyphase electric transformers - Google Patents

Improvements in polyphase electric transformers

Info

Publication number
GB725290A
GB725290A GB1654/53A GB165453A GB725290A GB 725290 A GB725290 A GB 725290A GB 1654/53 A GB1654/53 A GB 1654/53A GB 165453 A GB165453 A GB 165453A GB 725290 A GB725290 A GB 725290A
Authority
GB
United Kingdom
Prior art keywords
delta
winding
neutral point
star
windings
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
GB1654/53A
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
Original Assignee
General Electric Co
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 filed Critical General Electric Co
Publication of GB725290A publication Critical patent/GB725290A/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 Of Transformers For General Uses (AREA)

Abstract

725,290. Transformer arrangements. GENERAL ELECTRIC CO. Jan. 20, 1953 [Feb. 6, 1952], No. 1654/53. Classes 38 (2) and 38 (4). A three-phase transformer has three sets of delta connected windings 11, 12, 13; 15, 16, 17; 19, 20, 21 connected between the three line terminals 10, 14, 18 and the neutral point 22. Thus the neutral point is stabilized without the use of the normal additional idle delta winding. Such a winding arrangement forms a composite star and delta system conductively associated with each other, and includes in each phase an element common to the star and delta portions of the system. The reactances of the various windings are chosen such that each element carries the desired portion of current associated with any terminal to give the chosen stabilizing capacity. In other embodiments the three delta connected sets of windings may be connected to the neutral point through a normal star connected winding or to the line terminals through such a winding. The arrangement may form the high or low voltage side of the transformer.
GB1654/53A 1952-02-06 1953-01-20 Improvements in polyphase electric transformers Expired GB725290A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US725290XA 1952-02-06 1952-02-06

Publications (1)

Publication Number Publication Date
GB725290A true GB725290A (en) 1955-03-02

Family

ID=22108183

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1654/53A Expired GB725290A (en) 1952-02-06 1953-01-20 Improvements in polyphase electric transformers

Country Status (1)

Country Link
GB (1) GB725290A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4513243A (en) * 1983-06-08 1985-04-23 Westinghouse Electric Corp. Core form transformer for selective cancellation of subsynchronous resonance
US5343080A (en) * 1991-11-15 1994-08-30 Power Distribution, Inc. Harmonic cancellation system
US5434455A (en) * 1991-11-15 1995-07-18 Power Distribution, Inc. Harmonic cancellation system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4513243A (en) * 1983-06-08 1985-04-23 Westinghouse Electric Corp. Core form transformer for selective cancellation of subsynchronous resonance
US5343080A (en) * 1991-11-15 1994-08-30 Power Distribution, Inc. Harmonic cancellation system
US5434455A (en) * 1991-11-15 1995-07-18 Power Distribution, Inc. Harmonic cancellation system

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