ES472609A1 - Traction motor current control apparatus - Google Patents
Traction motor current control apparatusInfo
- Publication number
- ES472609A1 ES472609A1 ES472609A ES472609A ES472609A1 ES 472609 A1 ES472609 A1 ES 472609A1 ES 472609 A ES472609 A ES 472609A ES 472609 A ES472609 A ES 472609A ES 472609 A1 ES472609 A1 ES 472609A1
- Authority
- ES
- Spain
- 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.)
- Expired
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.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US82534177A | 1977-08-17 | 1977-08-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
ES472609A1 true ES472609A1 (en) | 1979-10-16 |
Family
ID=25243762
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES472609A Expired ES472609A1 (en) | 1977-08-17 | 1978-08-16 | 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) |
-
1978
- 1978-07-24 CA CA307,936A patent/CA1125854A/en not_active Expired
- 1978-08-07 MX MX17443278A patent/MX146965A/en unknown
- 1978-08-14 BR BR7805197A patent/BR7805197A/en unknown
- 1978-08-14 GB GB7833246A patent/GB2002973B/en not_active Expired
- 1978-08-15 JP JP9874778A patent/JPS5432720A/en active Pending
- 1978-08-16 ES ES472609A patent/ES472609A1/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
CA1125854A (en) | 1982-06-15 |
BR7805197A (en) | 1979-05-02 |
GB2002973A (en) | 1979-02-28 |
MX146965A (en) | 1982-09-15 |
JPS5432720A (en) | 1979-03-10 |
GB2002973B (en) | 1982-02-10 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FD1A | Patent lapsed |
Effective date: 20100528 |