GB1478297A - Control circuit for electric alternators - Google Patents

Control circuit for electric alternators

Info

Publication number
GB1478297A
GB1478297A GB3807173A GB3807173A GB1478297A GB 1478297 A GB1478297 A GB 1478297A GB 3807173 A GB3807173 A GB 3807173A GB 3807173 A GB3807173 A GB 3807173A GB 1478297 A GB1478297 A GB 1478297A
Authority
GB
United Kingdom
Prior art keywords
output
alternator
control circuit
rectifier
fed
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
GB3807173A
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.)
Contrology Techniques Ltd
Original Assignee
Contrology Techniques 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 Contrology Techniques Ltd filed Critical Contrology Techniques Ltd
Priority to GB3807173A priority Critical patent/GB1478297A/en
Publication of GB1478297A publication Critical patent/GB1478297A/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
    • H02P9/14—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field
    • H02P9/26—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field using discharge tubes or semiconductor devices
    • H02P9/30—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field using discharge tubes or semiconductor devices using semiconductor devices

Landscapes

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

Abstract

1478297 Dynamo-electric machines CONTROLOGY TECHNIQUES Ltd 8 Aug 1974 [10 Aug 1973] 38071/73 Heading H2A [Also in Division G3] A voltage regulator for an alternator comprises a field winding excitation control circuit connected, in use, across the alternator output and including a full-wave rectifier 18 arranged to supply D.C. to the alternator field winding, and a voltage sensor 12 and cross-over detector 15 connected, in use, across the alternator output, the cross-over detector controlling a pulse generator 14 which provides an output control signal for each half-cycle of alternator output voltage, the output of voltage sensor 12 being fed to a current comparator 13 which controls the mark to space ratio of the output signals of generator 14, these signals being fed to a drive circuit 16 which controls a current control circuit 17 controlling the D.C. fed by the rectifier 18 to the field winding. The current control circuit 17 may comprise a triac, as shown, or thyristors. The pulse generator 14 is a monostable multivibrator including NOR gates G3, G4. In a modification, Fig. 3 (not shown), the transformer T1 in the voltage sensor 12 is replaced by an RC network and the resistor R18 in the rectifier 18 is replaced by a flywheel diode (D21). In a further modification (not shown) the triac QT1 is omitted altogether and the diodes D8 and D9 in the rectifier 18 are replaced by thyristors.
GB3807173A 1974-08-08 1974-08-08 Control circuit for electric alternators Expired GB1478297A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3807173A GB1478297A (en) 1974-08-08 1974-08-08 Control circuit for electric alternators

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3807173A GB1478297A (en) 1974-08-08 1974-08-08 Control circuit for electric alternators

Publications (1)

Publication Number Publication Date
GB1478297A true GB1478297A (en) 1977-06-29

Family

ID=10400972

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3807173A Expired GB1478297A (en) 1974-08-08 1974-08-08 Control circuit for electric alternators

Country Status (1)

Country Link
GB (1) GB1478297A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4219769A (en) * 1978-12-08 1980-08-26 Contrology Techniques Limited Automatic voltage regulator
EP0187946A1 (en) * 1984-12-14 1986-07-23 M.E.C.C. ALTE S.p.A. Electronic voltage regulator with two-directional action for alternators

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4219769A (en) * 1978-12-08 1980-08-26 Contrology Techniques Limited Automatic voltage regulator
EP0187946A1 (en) * 1984-12-14 1986-07-23 M.E.C.C. ALTE S.p.A. Electronic voltage regulator with two-directional action for alternators
US4733157A (en) * 1984-12-14 1988-03-22 M.E.C.C. Alte S.P.A. Electronic voltage regulator with two-directional action for alternators
AU575703B2 (en) * 1984-12-14 1988-08-04 M.E.C.C. Alte S.P.A. Electronic voltage regulator

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee