GB253932A - Method of controlling the excitation of dynamo electric machines - Google Patents

Method of controlling the excitation of dynamo electric machines

Info

Publication number
GB253932A
GB253932A GB15378/26A GB1537826A GB253932A GB 253932 A GB253932 A GB 253932A GB 15378/26 A GB15378/26 A GB 15378/26A GB 1537826 A GB1537826 A GB 1537826A GB 253932 A GB253932 A GB 253932A
Authority
GB
United Kingdom
Prior art keywords
winding
overload
field
exciter
series
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
GB15378/26A
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 GB253932A publication Critical patent/GB253932A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
    • H02P9/10—Control effected upon generator excitation circuit to reduce harmful effects of overloads or transients, e.g. sudden application of load, sudden removal of load, sudden change of load
    • H02P9/12—Control effected upon generator excitation circuit to reduce harmful effects of overloads or transients, e.g. sudden application of load, sudden removal of load, sudden change of load for demagnetising; for reducing effects of remanence; for preventing pole reversal
    • H02P9/123—Control effected upon generator excitation circuit to reduce harmful effects of overloads or transients, e.g. sudden application of load, sudden removal of load, sudden change of load for demagnetising; for reducing effects of remanence; for preventing pole reversal for demagnetising; for reducing effects of remanence

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Eletrric Generators (AREA)

Abstract

253,932. International General Electric Co., Inc., (Assignees of Allgemeine Elektricitats Ges.). June 22, 1925, [Convention date]. Void [Published under Sect. 91 of the Acts]. Protective or safety devices, auxiliary.-The field of a separately excited dynamo-electrio machine is reversed upon overload by means responsive to a predetermined overload. As shown, the field winding b of an alternator a is supplied from an exciter d naving a shunt winding e and a differential series winding i normally short-circuited by a switch k. A resistance g normally shunted by a switch h may be provided in series with the exciter shunt field winding. An overload relay l supplied from a current transformer n causes the operating coils of the switches k, h to be energized simultaneously or otherwise when the alternator is overloaded. Back contacts are provided on one or both of the switches k, h to energize the actuating coil of the main circuit-breaker m. If the exciter d is excited by an auxiliary machine, this auxiliary machine may oe provided with a series differential winding. The field weakening resistance g may be dispensed with, in which case the shunt field circuit is completely opened upon overload.
GB15378/26A 1925-06-22 1926-06-18 Method of controlling the excitation of dynamo electric machines Expired GB253932A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE253932X 1925-06-22

Publications (1)

Publication Number Publication Date
GB253932A true GB253932A (en) 1927-01-13

Family

ID=5955562

Family Applications (1)

Application Number Title Priority Date Filing Date
GB15378/26A Expired GB253932A (en) 1925-06-22 1926-06-18 Method of controlling the excitation of dynamo electric machines

Country Status (1)

Country Link
GB (1) GB253932A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3480937A1 (en) * 2017-11-06 2019-05-08 The Boeing Company Counter-field winding in electrical generator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3480937A1 (en) * 2017-11-06 2019-05-08 The Boeing Company Counter-field winding in electrical generator
US10418926B2 (en) 2017-11-06 2019-09-17 The Boeing Company Counter-field winding in electrical generator

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