GB738710A - Improvements in or relating to the control of parallel connected alternating currentgenerators - Google Patents

Improvements in or relating to the control of parallel connected alternating currentgenerators

Info

Publication number
GB738710A
GB738710A GB22197/53A GB2219753A GB738710A GB 738710 A GB738710 A GB 738710A GB 22197/53 A GB22197/53 A GB 22197/53A GB 2219753 A GB2219753 A GB 2219753A GB 738710 A GB738710 A GB 738710A
Authority
GB
United Kingdom
Prior art keywords
alternators
power
unbalance
aug
voltages
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
GB22197/53A
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.)
Westinghouse Electric International Co
Original Assignee
Westinghouse Electric International 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 Westinghouse Electric International Co filed Critical Westinghouse Electric International Co
Publication of GB738710A publication Critical patent/GB738710A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Tests Of Circuit Breakers, Generators, And Electric Motors (AREA)
  • Control Of Eletrric Generators (AREA)
  • Supply And Distribution Of Alternating Current (AREA)

Abstract

738,710. Automatic power control systems. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. Aug. 12, 1953 [Aug. 16, 1952], No. 22197/53. Class 38 (4). [Also in Group XXXVII] The power outputs of two or more alternators, driven by the engines of an aircraft, and connected in parallel, are individually measured to produce proportional D.C. voltages which are opposed in a closed circuit. Any unbalance thus causes a circulating current which adjusts the alternator speed regulators and on serious unbalance energizes polarized relays to trip out the machine which is not carrying load. Each generator 35 has a power measuring network, Fig. 1 (not shown) 45 in which the output of a current transformer is added to the output of a potential transformer, the resultant voltage being proportional to power. These voltages are opposed in a loop circuit which includes coils 46 on the variable ratio gear drives 37 interposed between the alternators and the prime movers driving the alternators, in addition to polarized relays 48 for tripping either one of the circuit breakers 42 on serious unbalance. A second coil 39 on each gear drive is energized from a tachometer generator 40.
GB22197/53A 1952-08-16 1953-08-12 Improvements in or relating to the control of parallel connected alternating currentgenerators Expired GB738710A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US738710XA 1952-08-16 1952-08-16

Publications (1)

Publication Number Publication Date
GB738710A true GB738710A (en) 1955-10-19

Family

ID=22116305

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22197/53A Expired GB738710A (en) 1952-08-16 1953-08-12 Improvements in or relating to the control of parallel connected alternating currentgenerators

Country Status (1)

Country Link
GB (1) GB738710A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2985845B1 (en) * 2014-08-13 2020-05-27 Kohler Co. Protective functions for parallel generators

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2985845B1 (en) * 2014-08-13 2020-05-27 Kohler Co. Protective functions for parallel generators

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