GB897202A - Improvements relating to rectifier/inverter equipment - Google Patents

Improvements relating to rectifier/inverter equipment

Info

Publication number
GB897202A
GB897202A GB2619759A GB2619759A GB897202A GB 897202 A GB897202 A GB 897202A GB 2619759 A GB2619759 A GB 2619759A GB 2619759 A GB2619759 A GB 2619759A GB 897202 A GB897202 A GB 897202A
Authority
GB
United Kingdom
Prior art keywords
windings
current
equipment
circuit
rectifier
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
GB2619759A
Inventor
Henry Kemp
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.)
Associated Electrical Industries Ltd
Original Assignee
Associated Electrical Industries 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 Associated Electrical Industries Ltd filed Critical Associated Electrical Industries Ltd
Priority to GB2619759A priority Critical patent/GB897202A/en
Publication of GB897202A publication Critical patent/GB897202A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
    • H02H7/12—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers
    • H02H7/1209—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for converters using only discharge tubes

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Inverter Devices (AREA)

Abstract

897,202. Protective cut-out arrangements. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Aug. 24, 1960 [July 30, 1959], No.26197/59. Class 38 (5). [Also in Group XXXV] In a rectifier/inverter equipment having polyphase voltage transforming means PT in combination with a plurality of gridcontrolled gaseous - conduction valves V1 . . . V6, switching means are arranged for operation in accordance with a quantity derived from the current in at least one anode-cathode path of the equipment reaching a predetermined value signifying a " breakthrough " fault during inverter operation, and means are provided for reducing or nullifying the quantity which would otherwise be derived in accordance with the anode-cathode current when the equipment is rectifying. In the Figure, the multi-anode mercury arc valves are arranged in two groups and the common cathode path C of each group provides a D.C. control conductor for a saturable core reactance device RD having A.C. windings AC1, AC2 supplied from a transformer T in series with a bridge rectifier RF connected to the trip coil TC of a circuit-breaker XB. This series-circuit also includes the A.C. windings AC3, AC4 of a further saturable core reactance device RD1 having D.C. control windings DC1, DC2 and opposing D.C. biasing windings B1, B2. When the equipment is rectifying, the current in the windings DC1, DC2 is of the same order as that in the windings B1, B2, so that the windings AC3, AC4 will have high impedances and prevent the effective energization of the trip coil TC. In the changeover from rectifier operation to inverter operation, the current in the control windings DC1, DC2 is reduced so that the biasing windings B1, B2 reduce the impedances of the windings AC3, AC4. If a " breakthrough " fault occurs, the increase in the current in the cathode path C causes the impedance of the A.C. windings AC1, AC2 to be reduced. The coil TC is now sufficiently energized to trip the circuit-breaker XB. Protection against " backfires " when rectifying may be provided by means of a conventional direct - acting reverse current trip operable to release the circuit-breaker XB. Electronic valves or transistors may be used in place of the reactance devices RD1.
GB2619759A 1959-07-30 1959-07-30 Improvements relating to rectifier/inverter equipment Expired GB897202A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2619759A GB897202A (en) 1959-07-30 1959-07-30 Improvements relating to rectifier/inverter equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2619759A GB897202A (en) 1959-07-30 1959-07-30 Improvements relating to rectifier/inverter equipment

Publications (1)

Publication Number Publication Date
GB897202A true GB897202A (en) 1962-05-23

Family

ID=10239876

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2619759A Expired GB897202A (en) 1959-07-30 1959-07-30 Improvements relating to rectifier/inverter equipment

Country Status (1)

Country Link
GB (1) GB897202A (en)

Similar Documents

Publication Publication Date Title
US2672584A (en) Diferential apparatus for the protection of current converters
GB899046A (en) Electric power supply apparatus
US2305380A (en) Electric protective system
US2548579A (en) Control circuits for electric converting systems
GB897202A (en) Improvements relating to rectifier/inverter equipment
US2300872A (en) Arc-back protective system
GB823963A (en) Electric arc welding apparatus
US2510616A (en) Differential protective arrangement
US2275881A (en) Fault protective system
GB894563A (en) Improvements relating to rectifier/inverter equipment
US2291349A (en) Electric valve protective system
CN219372010U (en) Device for avoiding closing inrush current of low-voltage isolation transformer and low-voltage power supply system
US2222696A (en) Protective system
US1837995A (en) Rectifying system
US2027189A (en) Control and protection of electric circuits
GB1107870A (en) Improvements relating to electrical coupling circuits for fault suppression
Bevan The application of high-voltage steel-tank mercury-arc rectifiers to broadcast transmitters
US2015041A (en) Protective means for mercury arc devices
GB826497A (en) Improvements in or relating to electric current rectifying arrangements
SU1473000A1 (en) Ground fault current limiter in ship power system
Kaufmann et al. Overvoltage protection of current-transformer secondary windings and associated circuits
US2486343A (en) Circuit control apparatus
US3044005A (en) Protection of mercury arc rectifier
US1717312A (en) Rectifying system
US2078685A (en) Vapor electric converter