GB1292713A - Thyristor control systems - Google Patents
Thyristor control systemsInfo
- Publication number
- GB1292713A GB1292713A GB337570A GB337570A GB1292713A GB 1292713 A GB1292713 A GB 1292713A GB 337570 A GB337570 A GB 337570A GB 337570 A GB337570 A GB 337570A GB 1292713 A GB1292713 A GB 1292713A
- Authority
- GB
- United Kingdom
- Prior art keywords
- primary current
- thyristors
- rectifying
- turned
- 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
Links
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/10—Regulating voltage or current
- G05F1/12—Regulating voltage or current wherein the variable actually regulated by the final control device is ac
- G05F1/14—Regulating voltage or current wherein the variable actually regulated by the final control device is ac using tap transformers or tap changing inductors as final control devices
- G05F1/16—Regulating voltage or current wherein the variable actually regulated by the final control device is ac using tap transformers or tap changing inductors as final control devices combined with discharge tubes or semiconductor devices
- G05F1/20—Regulating voltage or current wherein the variable actually regulated by the final control device is ac using tap transformers or tap changing inductors as final control devices combined with discharge tubes or semiconductor devices semiconductor devices only
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/10—Regulating voltage or current
- G05F1/12—Regulating voltage or current wherein the variable actually regulated by the final control device is ac
- G05F1/40—Regulating voltage or current wherein the variable actually regulated by the final control device is ac using discharge tubes or semiconductor devices as final control devices
- G05F1/44—Regulating voltage or current wherein the variable actually regulated by the final control device is ac using discharge tubes or semiconductor devices as final control devices semiconductor devices only
- G05F1/45—Regulating voltage or current wherein the variable actually regulated by the final control device is ac using discharge tubes or semiconductor devices as final control devices semiconductor devices only being controlled rectifiers in series with the load
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/10—Regulating voltage or current
- G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
- G05F1/62—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using bucking or boosting dc sources
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Automation & Control Theory (AREA)
- Rectifiers (AREA)
Abstract
1292713 Rectifying NIPPON KOKUYU TETSUDO 23 Jan 1970 [24 Jan 1969] 3375/70 Heading H2F In a rectifying system in which rectifying units 51, 52 fed from respective secondary windings of a transformer 1, are connected in series, the rectifiers in one unit 51 are conductive over the whole of each half cycle whilst those in subsequent units are turned on and off at angles such as to reduce the content of odd harmonics in the primary current. The system is applicable to supply of current to motors of a thyristor-controlled train. The current in load 5 may be smoothed by a reactor (not shown) so that the theoretical primary current is as shown in Fig. 5 in which thyristors 311, 312 are arranged to be conductive during the whole of respective half-cycles resulting in primary current 821 of block form; thyristors 321, 322 are turned on and off at appropriate angles so as to draw primary current 822 of block form, which when added to blocks 821 results in a primary current having less third harmonic content than in a conventional naturally commutated system. Fig. 7 (not shown) relates to the primary current waveform of a system employing three series-connected rectifying units. The thyristors 311 ... 322 may be turned off by auxiliary circuits or may be of the gate-turn-off type. A filter may be included between the secondary windings and the thyristors which may be in bridge form to prevent regenerative operation.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP473169 | 1969-01-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1292713A true GB1292713A (en) | 1972-10-11 |
Family
ID=11592029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB337570A Expired GB1292713A (en) | 1969-01-24 | 1970-01-23 | Thyristor control systems |
Country Status (5)
| Country | Link |
|---|---|
| CH (1) | CH522320A (en) |
| DE (1) | DE2003034A1 (en) |
| FR (1) | FR2029055A1 (en) |
| GB (1) | GB1292713A (en) |
| SE (1) | SE370151B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0019747A1 (en) * | 1979-05-14 | 1980-12-10 | Siemens Aktiengesellschaft | Controlled welding modulator |
-
1970
- 1970-01-21 SE SE69170A patent/SE370151B/xx unknown
- 1970-01-23 GB GB337570A patent/GB1292713A/en not_active Expired
- 1970-01-23 DE DE19702003034 patent/DE2003034A1/en active Pending
- 1970-01-23 FR FR7002407A patent/FR2029055A1/fr not_active Withdrawn
- 1970-01-26 CH CH117570A patent/CH522320A/en not_active IP Right Cessation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0019747A1 (en) * | 1979-05-14 | 1980-12-10 | Siemens Aktiengesellschaft | Controlled welding modulator |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2003034A1 (en) | 1970-08-20 |
| FR2029055A1 (en) | 1970-10-16 |
| CH522320A (en) | 1972-06-15 |
| SE370151B (en) | 1974-09-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |