GB2001486A - Improvements in rectifiers - Google Patents

Improvements in rectifiers

Info

Publication number
GB2001486A
GB2001486A GB7826583A GB7826583A GB2001486A GB 2001486 A GB2001486 A GB 2001486A GB 7826583 A GB7826583 A GB 7826583A GB 7826583 A GB7826583 A GB 7826583A GB 2001486 A GB2001486 A GB 2001486A
Authority
GB
United Kingdom
Prior art keywords
secondaries
transformer
compensating
phases
phase
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.)
Granted
Application number
GB7826583A
Other versions
GB2001486B (en
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.)
Foster Transformers Ltd
Original Assignee
Foster Transformers 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 Foster Transformers Ltd filed Critical Foster Transformers Ltd
Priority to GB7826583A priority Critical patent/GB2001486B/en
Publication of GB2001486A publication Critical patent/GB2001486A/en
Application granted granted Critical
Publication of GB2001486B publication Critical patent/GB2001486B/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
    • H02M7/06—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes without control electrode or semiconductor devices without control electrode
    • H02M7/08—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes without control electrode or semiconductor devices without control electrode arranged for operation in parallel

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Rectifiers (AREA)

Abstract

A rectifier unit for 3-phase a.c. to d.c. conversion is of the type having a transformer (10) with a star-connected secondary (14) and a delta-connected secondary (16) the outputs of which are respectively rectified by rectifier bridges (18, 20) and combined to give 12- pulse operation. To reduce the danger of current imbalance between the two secondaries, a compensating transformer unit (30) is interposed between the secondaries (14, 16) and the rectifiers (18, 20) which modifies the signals from the secondaries such that any difference in the current drawn from one secondary compared with the other tends to equalise the current drawn from the secondaries. The compensating transformer unit can take the form of 3 individual transformer units but is preferably a single transformer with 3 limbs, each of which carries a main winding (32) connected to one secondary and two opposed subsidiary windings (34, 36) which receive the phases from the other secondary which are closest to and on either side of the phase of the associated main winding. The compensating arrangement may be generalised for systems with more than 3 phases. <IMAGE>
GB7826583A 1977-07-25 1978-06-09 Rectifiers Expired GB2001486B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7826583A GB2001486B (en) 1977-07-25 1978-06-09 Rectifiers

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB3116177 1977-07-25
GB7826583A GB2001486B (en) 1977-07-25 1978-06-09 Rectifiers

Publications (2)

Publication Number Publication Date
GB2001486A true GB2001486A (en) 1979-01-31
GB2001486B GB2001486B (en) 1982-02-03

Family

ID=26260769

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7826583A Expired GB2001486B (en) 1977-07-25 1978-06-09 Rectifiers

Country Status (1)

Country Link
GB (1) GB2001486B (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2505575A1 (en) * 1981-05-11 1982-11-12 Westinghouse Electric Corp ALTERNATIVE / CONTINUOUS OR CONTINUOUS / ALTERNATIVE CONVERTER SYSTEM WITH HARMONIC REDUCTION OF ALTERNATIVE LINES
EP0472928A1 (en) * 1990-08-30 1992-03-04 Siemens-Albis Aktiengesellschaft Circuit arrangement to reduce harmonic currents
US5444355A (en) * 1991-09-26 1995-08-22 Mitsubishi Denki Kabushiki Kaisha Charging generator for a vehicle
WO2002058226A2 (en) * 2001-01-16 2002-07-25 Raytheon Company Multi-phase transformer system
RU2687047C1 (en) * 2018-06-25 2019-05-07 Федеральное государственное автономное образовательное учреждение высшего образования "Южно-Уральский государственный университет (национальный исследовательский университет)" ФГАОУ ВО "ЮУрГУ (НИУ)" Compensated ac/dc converter

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2505575A1 (en) * 1981-05-11 1982-11-12 Westinghouse Electric Corp ALTERNATIVE / CONTINUOUS OR CONTINUOUS / ALTERNATIVE CONVERTER SYSTEM WITH HARMONIC REDUCTION OF ALTERNATIVE LINES
EP0472928A1 (en) * 1990-08-30 1992-03-04 Siemens-Albis Aktiengesellschaft Circuit arrangement to reduce harmonic currents
US5444355A (en) * 1991-09-26 1995-08-22 Mitsubishi Denki Kabushiki Kaisha Charging generator for a vehicle
EP0534153B1 (en) * 1991-09-26 1996-07-31 Mitsubishi Denki Kabushiki Kaisha Charging generator for vehicle
WO2002058226A2 (en) * 2001-01-16 2002-07-25 Raytheon Company Multi-phase transformer system
WO2002058226A3 (en) * 2001-01-16 2003-10-30 Raytheon Co Multi-phase transformer system
RU2687047C1 (en) * 2018-06-25 2019-05-07 Федеральное государственное автономное образовательное учреждение высшего образования "Южно-Уральский государственный университет (национальный исследовательский университет)" ФГАОУ ВО "ЮУрГУ (НИУ)" Compensated ac/dc converter

Also Published As

Publication number Publication date
GB2001486B (en) 1982-02-03

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Legal Events

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

Effective date: 19920609