GB1497045A - Current converters - Google Patents

Current converters

Info

Publication number
GB1497045A
GB1497045A GB11931/74A GB1193174A GB1497045A GB 1497045 A GB1497045 A GB 1497045A GB 11931/74 A GB11931/74 A GB 11931/74A GB 1193174 A GB1193174 A GB 1193174A GB 1497045 A GB1497045 A GB 1497045A
Authority
GB
United Kingdom
Prior art keywords
group
rectifier
cycle
quarter
periods
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
GB11931/74A
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 GB11931/74A priority Critical patent/GB1497045A/en
Priority to ZA00751603A priority patent/ZA751603B/en
Priority to AU79159/75A priority patent/AU7915975A/en
Publication of GB1497045A publication Critical patent/GB1497045A/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
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
    • H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
    • H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/145—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means
    • H02M7/155—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only
    • H02M7/19—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only arranged for operation in series, e.g. for voltage multiplication
    • 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
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
    • H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
    • H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/145—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means
    • H02M7/155—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only
    • H02M7/162—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only in a bridge configuration

Abstract

1497045 Rectifying ASSOCIATED ELECTRICAL INDUSTRIES Ltd 18 March 1975 [18 March 1974] 11931/74 Heading H2F A rectifying arrangement comprises a plurality of single-phase A.C. sources 52, 53 having common frequency and phase, a full-wave rectifier group connected across each A.C. source, each rectifier group having D.C. output terminals connected in series with the D.C. output terminals of each other rectifier group across a load 7 and means for effecting cyclic operation of the rectifier groups in staggered relationship, preferably, so that the average current in two sets of alternate half-periods of the A.C. source is the same so as to produce zero direct current in the supply to each rectifier group. As shown, each rectifier group 1 ... 4 may comprise four thyristors or, as shown, two thyristors 11, 12 and two diodes 13, 14. Fig. 2 (not shown) depicts wave-forms showing rectifier group 1 conductive during the second half of two consecutive half-cycles followed by a gap of one whole cycle and so on. The group 2 is shown as conducting similarly but with the pairs of quarter-cycle conduction periods interposed between those of group 1. In Fig. 4 (not shown) each group conducts for a quarter of a cycle in each whole cycle, the quarter cycles of the two groups being staggered. The invention is applicable to supply of D.C. to traction motors 7, 8. The first group 1 may be arranged to have continuous increase of conduction angle in a first set of half-periods from zero up to a maximum and only then to increase conduction in the other half-period.
GB11931/74A 1974-03-18 1974-03-18 Current converters Expired GB1497045A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB11931/74A GB1497045A (en) 1974-03-18 1974-03-18 Current converters
ZA00751603A ZA751603B (en) 1974-03-18 1975-03-14 Improvements in or relating to current converters
AU79159/75A AU7915975A (en) 1974-03-18 1975-03-17 Current converters

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB11931/74A GB1497045A (en) 1974-03-18 1974-03-18 Current converters

Publications (1)

Publication Number Publication Date
GB1497045A true GB1497045A (en) 1978-01-05

Family

ID=9995286

Family Applications (1)

Application Number Title Priority Date Filing Date
GB11931/74A Expired GB1497045A (en) 1974-03-18 1974-03-18 Current converters

Country Status (3)

Country Link
AU (1) AU7915975A (en)
GB (1) GB1497045A (en)
ZA (1) ZA751603B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3012329A1 (en) * 1979-04-09 1980-10-30 Asea Ab RECTIFIER ARRANGEMENT

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3012329A1 (en) * 1979-04-09 1980-10-30 Asea Ab RECTIFIER ARRANGEMENT

Also Published As

Publication number Publication date
ZA751603B (en) 1976-02-25
AU7915975A (en) 1976-09-23

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Legal Events

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