GB1241452A - Method of protecting a converter-fed direct-current consuming device from excess currents - Google Patents
Method of protecting a converter-fed direct-current consuming device from excess currentsInfo
- Publication number
- GB1241452A GB1241452A GB5714268A GB5714268A GB1241452A GB 1241452 A GB1241452 A GB 1241452A GB 5714268 A GB5714268 A GB 5714268A GB 5714268 A GB5714268 A GB 5714268A GB 1241452 A GB1241452 A GB 1241452A
- Authority
- GB
- United Kingdom
- Prior art keywords
- converter
- current
- load
- turn
- voltage
- 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
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/021—Details concerning the disconnection itself, e.g. at a particular instant, particularly at zero value of current, disconnection in a predetermined order
- H02H3/023—Details concerning the disconnection itself, e.g. at a particular instant, particularly at zero value of current, disconnection in a predetermined order by short-circuiting
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
- H02H7/12—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers
- H02H7/125—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for rectifiers
- H02H7/127—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for rectifiers having auxiliary control electrode to which blocking control voltages or currents are applied in case of emergency
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Ac-Ac Conversion (AREA)
- Rectifiers (AREA)
Abstract
1,241,452. Electric converter systems. LICENTIA PATENT - VERWALTUNGSG.m.b.H. 2 Dec., 1968 [1 Dec., 1967], No. 57142/68. Heading H2F. Excess current through a D.C. load 6 (Fig. 1) in the event of a short circuit therein, is avoided by the arrangement shown, wherein the load 6, is supplied from A.C. mains 1 via a secondary winding 2b, of a a transformer 2 and a rectifier bridge 4. The transformer primary 2a is connected to a controllable converter 3 shunted by an inducter 5 and commutating thyristor 7 and cagacitor 8, The capacitor is charged from an auxiliary R.C. source (not illustrated) to the same polarity as, but higher voltage than, the output of converter 3. Excess current in 6 causes a collapse in load voltage, which is detected by a means not described, which means functions to turn ON Th7. This causes the capacitor voltage to be applied, in opposition to the converter 3 output voltage, to turn OFF the conducting thyristors of the converter so that the transformer Primary current is cut-off and hence also the Secondary current and current to load 6. Simultaneously the control circuit (not described) of converter 3 is changed over to inverter operation mode. The current which was flowing in inductor 5 when Th7 was switched ON continues to flow via C8 and Th7, firstly increasing and then dying away to zero when C8 is discharged, thus causing Th7 to turn OFF.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19671613845 DE1613845A1 (en) | 1967-12-01 | 1967-12-01 | Method for protecting a converter-fed direct current consumer against overcurrents |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1241452A true GB1241452A (en) | 1971-08-04 |
Family
ID=5681909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5714268A Expired GB1241452A (en) | 1967-12-01 | 1968-12-02 | Method of protecting a converter-fed direct-current consuming device from excess currents |
Country Status (5)
| Country | Link |
|---|---|
| CH (1) | CH489125A (en) |
| DE (1) | DE1613845A1 (en) |
| FR (1) | FR1595855A (en) |
| GB (1) | GB1241452A (en) |
| SE (1) | SE342116B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2549184A1 (en) * | 1975-11-03 | 1977-05-26 | Garbe Lahmeyer & Co Ag | DC POWER SUPPLY WITH FULLY CONTROLLED THYRISTOR BRIDGE |
-
1967
- 1967-12-01 DE DE19671613845 patent/DE1613845A1/en active Pending
-
1968
- 1968-11-01 SE SE1583668A patent/SE342116B/xx unknown
- 1968-11-15 CH CH1691568A patent/CH489125A/en not_active IP Right Cessation
- 1968-11-29 FR FR1595855D patent/FR1595855A/fr not_active Expired
- 1968-12-02 GB GB5714268A patent/GB1241452A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CH489125A (en) | 1970-04-15 |
| DE1613845A1 (en) | 1971-05-27 |
| SE342116B (en) | 1972-01-24 |
| FR1595855A (en) | 1970-06-15 |
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