ZA805479B - A circuit arrangement for and method of suppressing firing pulses of thyristors connected in parallel - Google Patents
A circuit arrangement for and method of suppressing firing pulses of thyristors connected in parallelInfo
- Publication number
- ZA805479B ZA805479B ZA00805479A ZA805479A ZA805479B ZA 805479 B ZA805479 B ZA 805479B ZA 00805479 A ZA00805479 A ZA 00805479A ZA 805479 A ZA805479 A ZA 805479A ZA 805479 B ZA805479 B ZA 805479B
- Authority
- ZA
- South Africa
- Prior art keywords
- input
- component
- output
- logic connection
- voltage
- Prior art date
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
- H02M1/00—Details of apparatus for conversion
- H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
- H02M1/088—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the simultaneous control of series or parallel connected semiconductor devices
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Rectifiers (AREA)
- Inverter Devices (AREA)
- Power Conversion In General (AREA)
Abstract
1. Switching arrangement for suppressing ignition pulses for thyristors which are connected in parallel in bridge arms and which are fed via a rectifier bridge circuit connected to a rectifier transformer during a commutating operation that utilises a control unit for the thyristors, in which one component (1) is fed with a voltage supplied by a saw-tooth generator together with a synchronisation voltage to the unit so as to provide a comparison voltage in conjunction with a predetermined control voltage supplied by the current regulator for forming pulse blocks, whereby the component (1) controls a pulse generator (7) for the generation of ignition chain pulses, characterised in that - a logic connection in the form of an AND member (5) is connected in series with the pulse generator (7), - a first input of the logic connection (5) is connected with the negating output of an or else circuit (6), the one input of which is connected to the one output (12) of the component (1) for forming pulse blocks and the other input of which is connected with a first comparator (9) that is equipped with a switching hysterisis and is actuated by means of the secondary voltage of the rectifier transformer, - a second input of the logic connection (5) is directly connected to an output (11) of the component (1) for forming pulse blocks and - a third input of the logic connection (5) is connected with the output of a second comparator (4) which is coupled to the saw-tooth generator (2) by means of an inverter (3).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2936742A DE2936742C2 (en) | 1979-09-08 | 1979-09-08 | Circuit arrangement for suppressing ignition pulses from thyristors connected in parallel |
Publications (1)
Publication Number | Publication Date |
---|---|
ZA805479B true ZA805479B (en) | 1981-08-26 |
Family
ID=6080587
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ZA00805479A ZA805479B (en) | 1979-09-08 | 1980-09-04 | A circuit arrangement for and method of suppressing firing pulses of thyristors connected in parallel |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0025770B1 (en) |
AT (1) | ATE7189T1 (en) |
DE (1) | DE2936742C2 (en) |
ZA (1) | ZA805479B (en) |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE364822B (en) * | 1972-07-10 | 1974-03-04 | Asea Ab | |
DE2536413C3 (en) * | 1975-08-13 | 1980-12-11 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Arrangement for detecting the release or blocking process of a high-voltage converter valve |
SE7603004L (en) * | 1976-03-04 | 1977-06-01 |
-
1979
- 1979-09-08 DE DE2936742A patent/DE2936742C2/en not_active Expired
-
1980
- 1980-06-20 EP EP80730042A patent/EP0025770B1/en not_active Expired
- 1980-06-20 AT AT80730042T patent/ATE7189T1/en active
- 1980-09-04 ZA ZA00805479A patent/ZA805479B/en unknown
Also Published As
Publication number | Publication date |
---|---|
EP0025770A1 (en) | 1981-03-25 |
DE2936742A1 (en) | 1981-03-26 |
ATE7189T1 (en) | 1984-05-15 |
EP0025770B1 (en) | 1984-04-18 |
DE2936742C2 (en) | 1984-07-26 |
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