GB129068A - Improvements in and relating to Alternating Current Dynamo Electric Machines. - Google Patents

Improvements in and relating to Alternating Current Dynamo Electric Machines.

Info

Publication number
GB129068A
GB129068A GB907518A GB907518A GB129068A GB 129068 A GB129068 A GB 129068A GB 907518 A GB907518 A GB 907518A GB 907518 A GB907518 A GB 907518A GB 129068 A GB129068 A GB 129068A
Authority
GB
United Kingdom
Prior art keywords
exciter
field
resistances
switch
relating
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
GB907518A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co Ltd
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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Priority to GB907518A priority Critical patent/GB129068A/en
Publication of GB129068A publication Critical patent/GB129068A/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

Abstract

129,068. British Thomson - Houston Co., Taylor, H. W., and Whitcher, J. June 1, 1918. Dynamos, regulating; auxiliary protective or safety devices.- When a fault occurs, the exciter field of an alternator is reversed, and the exciter current is shunted. Normally, the field 1 of the exciter 6 is in series with resistances 2, 4. When a fa.ult occurs, the switch 5 closes under the action of a spring to reverse the direction of the current in the exciter-field 1 and to connect the resistances 2, 4 in parallel across the exciter terminals. By means of an additional contact 7, the switch 5 short-circuits a rheostat 3 in series with the exciter-field 1. Alternatively, a doublethrow switch is employed, and the resistances 2, 4 are normally short-circuited, but are connected in parallel across the exciter terminals when a fault occurs.
GB907518A 1918-06-01 1918-06-01 Improvements in and relating to Alternating Current Dynamo Electric Machines. Expired GB129068A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB907518A GB129068A (en) 1918-06-01 1918-06-01 Improvements in and relating to Alternating Current Dynamo Electric Machines.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB907518A GB129068A (en) 1918-06-01 1918-06-01 Improvements in and relating to Alternating Current Dynamo Electric Machines.

Publications (1)

Publication Number Publication Date
GB129068A true GB129068A (en) 1919-07-02

Family

ID=32343596

Family Applications (1)

Application Number Title Priority Date Filing Date
GB907518A Expired GB129068A (en) 1918-06-01 1918-06-01 Improvements in and relating to Alternating Current Dynamo Electric Machines.

Country Status (1)

Country Link
GB (1) GB129068A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2689316A (en) * 1951-12-19 1954-09-14 Bendix Aviat Corp Generator protective device
CN102013348A (en) * 2009-09-04 2011-04-13 株式会社牧田 Variable speed switch

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2689316A (en) * 1951-12-19 1954-09-14 Bendix Aviat Corp Generator protective device
CN102013348A (en) * 2009-09-04 2011-04-13 株式会社牧田 Variable speed switch
CN102013348B (en) * 2009-09-04 2014-03-12 株式会社牧田 Variable speed switch

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