GB2002973A - Traction motor current control apparatus - Google Patents

Traction motor current control apparatus

Info

Publication number
GB2002973A
GB2002973A GB7833246A GB7833246A GB2002973A GB 2002973 A GB2002973 A GB 2002973A GB 7833246 A GB7833246 A GB 7833246A GB 7833246 A GB7833246 A GB 7833246A GB 2002973 A GB2002973 A GB 2002973A
Authority
GB
United Kingdom
Prior art keywords
traction motor
thyristor
control apparatus
source
conduction period
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
GB7833246A
Other versions
GB2002973B (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.)
CBS Corp
Original Assignee
Westinghouse Electric Corp
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 Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Publication of GB2002973A publication Critical patent/GB2002973A/en
Application granted granted Critical
Publication of GB2002973B publication Critical patent/GB2002973B/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
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
    • H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M3/125—Conversion of dc power input into dc power output without intermediate conversion into ac 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
    • H02M3/135—Conversion of dc power input into dc power output without intermediate conversion into ac 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
    • H02M3/137—Conversion of dc power input into dc power output without intermediate conversion into ac 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 with automatic control of output voltage or current, e.g. switching regulators

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Control Of Direct Current Motors (AREA)
  • Dc-Dc Converters (AREA)

Abstract

A chopper apparatus supplying current from a d.c. source 50 to one or more propulsion traction motors M of a train or vehicle in an environment where control signals such as vehicle speed control signals are present, uses first and second thyristors 56, 58, controlled by control pulses in a manner as to limit electrical noise generation to a minimum, and providing respective different paths between the source and the motors. To cater for various fractional load requirements of the traction motor, the control pulses controlling the rectifiers are positioned in adjacent relationship with each other to limit the generated electric noise; the "ON" conduction period of the first thyristor is arranged to be adjacent and immediately ahead of the "ON" conduction period of the second thyristor. This eliminates the need for expensive special noise filters in associated control apparatus. <IMAGE>
GB7833246A 1977-08-17 1978-08-14 Traction motor current control apparatus Expired GB2002973B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US82534177A 1977-08-17 1977-08-17

Publications (2)

Publication Number Publication Date
GB2002973A true GB2002973A (en) 1979-02-28
GB2002973B GB2002973B (en) 1982-02-10

Family

ID=25243762

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7833246A Expired GB2002973B (en) 1977-08-17 1978-08-14 Traction motor current control apparatus

Country Status (6)

Country Link
JP (1) JPS5432720A (en)
BR (1) BR7805197A (en)
CA (1) CA1125854A (en)
ES (1) ES472609A1 (en)
GB (1) GB2002973B (en)
MX (1) MX146965A (en)

Also Published As

Publication number Publication date
MX146965A (en) 1982-09-15
BR7805197A (en) 1979-05-02
CA1125854A (en) 1982-06-15
ES472609A1 (en) 1979-10-16
GB2002973B (en) 1982-02-10
JPS5432720A (en) 1979-03-10

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Legal Events

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