GB272189A - Method of rapidly de-exciting dynamo-electric machines - Google Patents

Method of rapidly de-exciting dynamo-electric machines

Info

Publication number
GB272189A
GB272189A GB1352027A GB1352027A GB272189A GB 272189 A GB272189 A GB 272189A GB 1352027 A GB1352027 A GB 1352027A GB 1352027 A GB1352027 A GB 1352027A GB 272189 A GB272189 A GB 272189A
Authority
GB
United Kingdom
Prior art keywords
exciter
resistance
machine
rapidly
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
GB1352027A
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.)
Rheinmetall Air Defence AG
Maschinenfabrik Oerlikon AG
Original Assignee
Werkzeugmaschinenfabrik Oerlikon Buhrle AG
Maschinenfabrik Oerlikon 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 Werkzeugmaschinenfabrik Oerlikon Buhrle AG, Maschinenfabrik Oerlikon AG filed Critical Werkzeugmaschinenfabrik Oerlikon Buhrle AG
Priority to GB1352027A priority Critical patent/GB272189A/en
Publication of GB272189A publication Critical patent/GB272189A/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)
  • Synchronous Machinery (AREA)

Abstract

272,189. Mond, A. L., (Maschinenfabrik Oerlikon). June 2, 1926. Dynamos, regulating; motors, controlling; protective devices, auxiliary.- A dynamo-electric machine is rapidly de-excited, as a protective measure, by arranging that its exciter is converted from its normal operation as a shunt-excited machine to series excitation with a resistance connected in parallel with its own exciting coil. Such a series connection establishes oscillations in the excitation circuit which rapidly de-excite the machine and annul its residual field, The Fig. shows a form in which the field coils E of a generator G are energized by an exciter A, the field coils e of which are connected with the armature and a resistance R by means of a. two-pole switch S<1>, For normal operation of the generator G, the switch is in the position I and the exciter runs as a shunt-wound machine with the resistance R short-circuited. When the generator suffers any damage, the switch is moved to the position II and the exciter is connected as a series-wound machine with the resistance R in parallel with its series coils.
GB1352027A 1927-05-19 1927-05-19 Method of rapidly de-exciting dynamo-electric machines Expired GB272189A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1352027A GB272189A (en) 1927-05-19 1927-05-19 Method of rapidly de-exciting dynamo-electric machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1352027A GB272189A (en) 1927-05-19 1927-05-19 Method of rapidly de-exciting dynamo-electric machines

Publications (1)

Publication Number Publication Date
GB272189A true GB272189A (en) 1927-12-08

Family

ID=10024459

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1352027A Expired GB272189A (en) 1927-05-19 1927-05-19 Method of rapidly de-exciting dynamo-electric machines

Country Status (1)

Country Link
GB (1) GB272189A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4097682A (en) * 1976-08-27 1978-06-27 Electric Power Research Institute, Inc. Means for protecting underground electrical equipment from thermal runaway

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4097682A (en) * 1976-08-27 1978-06-27 Electric Power Research Institute, Inc. Means for protecting underground electrical equipment from thermal runaway

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