GB1397604A - Electrical power supply systems - Google Patents

Electrical power supply systems

Info

Publication number
GB1397604A
GB1397604A GB2622572A GB2622572A GB1397604A GB 1397604 A GB1397604 A GB 1397604A GB 2622572 A GB2622572 A GB 2622572A GB 2622572 A GB2622572 A GB 2622572A GB 1397604 A GB1397604 A GB 1397604A
Authority
GB
United Kingdom
Prior art keywords
thyristors
converter
output
devices
current
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
GB2622572A
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.)
MO I I INZH ZHELEZNODOROZHNOGO
Original Assignee
MO I I INZH ZHELEZNODOROZHNOGO
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 MO I I INZH ZHELEZNODOROZHNOGO filed Critical MO I I INZH ZHELEZNODOROZHNOGO
Priority to GB2622572A priority Critical patent/GB1397604A/en
Publication of GB1397604A publication Critical patent/GB1397604A/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
    • H02M5/40—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 with intermediate conversion into dc
    • H02M5/42—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 with intermediate conversion into dc by static converters
    • H02M5/44—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 with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac
    • H02M5/443—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 with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a thyratron or thyristor type requiring extinguishing means
    • H02M5/45—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 with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only
    • H02M5/4505—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 with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only having a rectifier with controlled elements

Abstract

1397604 Converters MOSKOVSKY ORDENA LENINA I ORDENA TRUDOVOGO KRASNOGO ZNAMENI INSTITUT IN ZHENEROV ZHELEZNODOROZHNOGO TRANSPORTA and TALLINSKY ELEKTROTEKHNICHESKY ZAVODIMENI MI KALININA USSR 6 June 1972 26225/72 Heading H2F Power supply apparatus associated with a railway locomotive comprises a polyphase generator, means for converting the output thereof to a single phase output, means for controlling and adjusting the frequency of the single phase output, means for preventing incorrect operation of the converting and so prevent the flow of circulating current and means for protecting the converter against overload currents. An alternator 2 driven by a diesel engine of a locomotive by a shaft 1 has two three phase output windings 3, 4 displaced at 30 degrees to one another and an excitation field winding 5 controlled by a voltage stabilizing unit 6. The output windings 3, 4 are connected to a cyclo-converter 7 comprising two groups 8, 9 of thyristors connected in parallel opposition, each group 8, 9 comprising two bridge circuits connected in series. The output of the cyclo-converter 7 is single phase at a frequency determined by a pulse generator 56, the output at terminal 38 feeding the train loads 39, radio interference being suppressed by a diode bridge 55 and capacitor 54. Firing pulses for the thyristors 11-33 of the converter 7 are provided by pulse generators 60, 61 under the control of two bi-stable devices 57, 58 and the master pulse generator 56, power for the control system 56-61 being provided by a unit 62 when an initiating switch 58 is closed. In order to prevent thyristors in the groups 8, 9 firing simultaneously a zero load current detector 34 is provided which provides an input for the bistable devices 57, 58 such that the pulse generators 60, 61 can only provide firing pulses for the thyristors 11-33 at zero current crossings, the control system being provided with a delay device to ensure that the thyristors in one group are extinguished before the thyristors in the other group are rendered conductive. Protection for the converter 7 is provided by current limiting reactors 65 and current transformers 63 the signals from which are operative to inhibit the bi-stable devices 57, 58 and thus to prevent the production by the pulse generators 60, 61 of firing pulses for the thyristors 11-13. The circuits for the devices 34, 56-61 and 62 of the control circuit are described and include elements such as transistors, saturable reactors, thyristors and diode bridges.
GB2622572A 1972-06-06 1972-06-06 Electrical power supply systems Expired GB1397604A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2622572A GB1397604A (en) 1972-06-06 1972-06-06 Electrical power supply systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2622572A GB1397604A (en) 1972-06-06 1972-06-06 Electrical power supply systems

Publications (1)

Publication Number Publication Date
GB1397604A true GB1397604A (en) 1975-06-11

Family

ID=10240301

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2622572A Expired GB1397604A (en) 1972-06-06 1972-06-06 Electrical power supply systems

Country Status (1)

Country Link
GB (1) GB1397604A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4439823A (en) * 1982-01-11 1984-03-27 Westinghouse Electric Corp. Converting multiphase power from one frequency to another using current waveforms
WO2008018802A3 (en) * 2006-08-10 2008-03-20 Eaton Power Quality Company A cyclo-converter and methods of operation
US9219407B2 (en) 2006-08-10 2015-12-22 Eaton Industries Company Cyclo-converter and methods of operation
CN115021593A (en) * 2022-08-09 2022-09-06 四川大学 Control method of hybrid rectifier with multi-scale frequency modulation capability

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4439823A (en) * 1982-01-11 1984-03-27 Westinghouse Electric Corp. Converting multiphase power from one frequency to another using current waveforms
WO2008018802A3 (en) * 2006-08-10 2008-03-20 Eaton Power Quality Company A cyclo-converter and methods of operation
US8520409B2 (en) 2006-08-10 2013-08-27 Eaton Industries Company Cyclo-converter and methods of operation
US9219407B2 (en) 2006-08-10 2015-12-22 Eaton Industries Company Cyclo-converter and methods of operation
CN115021593A (en) * 2022-08-09 2022-09-06 四川大学 Control method of hybrid rectifier with multi-scale frequency modulation capability
CN115021593B (en) * 2022-08-09 2022-11-01 四川大学 Control method of hybrid rectifier with multi-scale frequency modulation capability

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Legal Events

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