GB382612A - Improvements in and relating to transforming electric currents - Google Patents

Improvements in and relating to transforming electric currents

Info

Publication number
GB382612A
GB382612A GB2042331A GB2042331A GB382612A GB 382612 A GB382612 A GB 382612A GB 2042331 A GB2042331 A GB 2042331A GB 2042331 A GB2042331 A GB 2042331A GB 382612 A GB382612 A GB 382612A
Authority
GB
United Kingdom
Prior art keywords
voltage
transformer
anode
winding
generator
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
GB2042331A
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.)
General Electric Co
Original Assignee
General Electric 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 General Electric Co filed Critical General Electric Co
Publication of GB382612A publication Critical patent/GB382612A/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00Conversion of dc power input into dc power output
    • H02M3/22Conversion of dc power input into dc power output with intermediate conversion into ac
    • H02M3/24Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
    • H02M3/28Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
    • H02M3/305Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a thyratron or thyristor type requiring extinguishing means
    • H02M3/31Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a thyratron or thyristor type requiring extinguishing means using discharge tubes only

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Generation Of Surge Voltage And Current (AREA)
  • Particle Accelerators (AREA)

Abstract

382,612. Converting electric currents. INTERNATIONAL GENERAL ELECTRIC CO., Inc., 120, Broadway, New York, U.S.A. -(Assignees of Allgemeine Elektricitõts, Ges. ; 2, Friedrich Karl-Ufer, Berlin.) July 16, 1931, No. 20423. Convention date, July 16, 1930. [Class 38 (ii).] In an arrangement for transforming direct current voltage through an alternating voltage into another direct current voltage by means of grid-controlled discharge vessels, the voltage changing transformer has a rhythmically intermittent separate excitation. which is dependent on the load, and effected by A.C. voltage of a nearly rectangular wave shape, and the anode circuits of the discharge vessels include interdependent impulse transformers. In Fig. 1 a thyraton or grid-controlled discharge vessel 1 with anodes 4, 5 and grids 2, 3 is connected through terminals 8, 9 to the primary 22 of the transformer 26, the secondary 23 of which is connected through 18, 19 to the rectifier 11. Included in the transformer is a tertiary winding 26, excited by a generator the current through the field windings of which is caused to be dependent on the load. Included in the anode circuits are windings of impulse transformers 30 of the form shown in Fig. 2 wherein the limb winding 31 is connected across terminals 8 in the thyraton anode, circuit, and the winding 32 across terminals 19 in the rectifier circuit; and both wound to give a field in the same direction, whilst a third yoke winding 35 carries a fixed current in the opposite direction. to just neutralize this field, and, in addition, receives current impulses from a separate generator. A similar transformer is used across terminals 9, 18. When the grid 2 is positive, an arc is struck at the anode 4 of the thyraton valve and a corresponding voltage, generated in the upper half 24 of the winding 21 of the transformer, produces a residual voltage for maintaining the arc and covering losses. When the voltage impulse is produced in the impulse transformer, the arc is extinguished at both the thyraton and the rectifier anodes 4, 14 respectively and, the voltage of grid 2 having meanwhile become negative, the arc remains extinguished until a fresh voltage impulse in the anode circuit and a positive grid reproduces it ; with a similar but displaced cycle taking place at the anode 5, the arc is swiftly transferred from one anode to another. The practical details of an arrangement with four discharge paths are illustrated in Fig. 4 in which a row of generators and commutators is mounted on a common shaft driven at a uniform speed by a motor 80. The windings 21a, 21b are excited from a generator 72, the field of which is excited by a source of voltage proportional to the voltage of the system' 10 and by a field winding 74 fed by a generator 71 having an excitation 75 dependent on the load. A quick-acting-regulator 76 is operated by resistances 91, 92 in the primary and secondary direct current lines respectively so that this excitation is adjusted in conformity with load variations. Generators 77 regulated by watt meters 78 or resistances 79 cover the copper and iron losses of the transformer 26. A separate generator 82 supplies voltage impulses to the impulse transformers, the windings 35 receiving, independently of these impulses, the compensation current supplied by the generator 71. The grids 2, 3 are supplied through a commutator 89 from a source of voltage 90.
GB2042331A 1930-07-17 1931-07-16 Improvements in and relating to transforming electric currents Expired GB382612A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE569161T 1930-07-17

Publications (1)

Publication Number Publication Date
GB382612A true GB382612A (en) 1932-10-17

Family

ID=34584597

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2042331A Expired GB382612A (en) 1930-07-17 1931-07-16 Improvements in and relating to transforming electric currents

Country Status (2)

Country Link
DE (1) DE569161C (en)
GB (1) GB382612A (en)

Also Published As

Publication number Publication date
DE569161C (en) 1933-01-31

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