GB385868A - Improvements in and relating to the conversion of polyphase current into single-phase current - Google Patents

Improvements in and relating to the conversion of polyphase current into single-phase current

Info

Publication number
GB385868A
GB385868A GB17677/32A GB1767732A GB385868A GB 385868 A GB385868 A GB 385868A GB 17677/32 A GB17677/32 A GB 17677/32A GB 1767732 A GB1767732 A GB 1767732A GB 385868 A GB385868 A GB 385868A
Authority
GB
United Kingdom
Prior art keywords
phase
anodes
anode
group
grids
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
GB17677/32A
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.)
BBC Brown Boveri AG Germany
BBC Brown Boveri France SA
Original Assignee
Brown Boveri und Cie AG Germany
BBC Brown Boveri France SA
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 Brown Boveri und Cie AG Germany, BBC Brown Boveri France SA filed Critical Brown Boveri und Cie AG Germany
Publication of GB385868A publication Critical patent/GB385868A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS 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
    • H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
    • H02M5/005—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases using discharge tubes

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Ac-Ac Conversion (AREA)

Abstract

385,868. Frequency and phase changing transformers. AKT.-GES. BROWN, BOVERI, ET CIE, Baden, Switzerland. June 22, 1932, No. 17677. Convention date, June 22, 1931. [Class 38 (ii).] In an arrangement for converting polyphase A.C. at one frequency to single-phase A.C. at a lower frequency the input transformer Tr has a star connected secondary Q each phase of which is connected to two anodes of a rectifier G through the oppositely directed primary coils PI, P<1>1, &c. of a single-phase output transformer TII. The anodes are arranged in two groups, one group being connected to primaries P1, P2, &c. and the other group being connected to primaries P1, P<1>1. &c. A synchronously running distributer S controls the grids, each contact being connected to the control grids of two anodes, one in each group, phase displaced 180‹ so that although both grids are energized only one anode will conduct. The numbers of turns in the groups of primary windings P1 .. P6, P<1>1 .. P<1>6 are graded so that the voltages induced in the secondary Q1 conform approximately to a sine curve. The contacts are arranged on the distributer so that in each half cycle one anode (the anode commencing the half cycle) conducts twice ; in the example shown in the drawing each half wave will be composed of seven loops. The cathode of the rectifier G is connected to the star point of secondary Q through a choke D which damps down current surges. The Specification describes a construction of the transformer TII in which the primary winding, composed of disc-shaped coils, is arranged inside and outside a cylindrical secondary winding.
GB17677/32A 1931-06-22 1932-06-22 Improvements in and relating to the conversion of polyphase current into single-phase current Expired GB385868A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE385868X 1931-06-22

Publications (1)

Publication Number Publication Date
GB385868A true GB385868A (en) 1933-01-05

Family

ID=6370883

Family Applications (1)

Application Number Title Priority Date Filing Date
GB17677/32A Expired GB385868A (en) 1931-06-22 1932-06-22 Improvements in and relating to the conversion of polyphase current into single-phase current

Country Status (1)

Country Link
GB (1) GB385868A (en)

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