GB388801A - Improvements in and relating to mercury vapour valves - Google Patents
Improvements in and relating to mercury vapour valvesInfo
- Publication number
- GB388801A GB388801A GB24101/31A GB2410131A GB388801A GB 388801 A GB388801 A GB 388801A GB 24101/31 A GB24101/31 A GB 24101/31A GB 2410131 A GB2410131 A GB 2410131A GB 388801 A GB388801 A GB 388801A
- Authority
- GB
- United Kingdom
- Prior art keywords
- arc
- auxiliary
- condenser
- main
- circuit
- 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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/505—Conversion of dc power input into ac power output without possibility of reversal 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
- H02M7/51—Conversion of dc power input into ac power output without possibility of reversal 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 discharge tubes only
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
- Generation Of Surge Voltage And Current (AREA)
- Control Of Eletrric Generators (AREA)
Abstract
388,801. Converting ; metallic-vapour apparatus. AKT.-GES. BROWN, BOVERI, ET CIE, Baden, Switzerland. Aug. 27, 1931, No. 24101. Convention date, Sept. 12, 1930. [Class 38 (ii).] In an arrangement for extinguishing the arc in metallic-vapour apparatus by connecting a condenser 11 between the main cathode 4 and an auxiliary cathode 5 so that a discharge from the main cathode to the auxiliary cathode occurs thus extinguishing the cathodic spot on the former, the discharge is facilitated by continuously maintaining a cathodic spot on the auxiliary cathode by means of an auxiliary anode 17 energized by a generator 18. The invention is shown as applied to interrupting the arc of a multi-anode grid-controlled valve 3 operating as in inverter, interruption being effected in response to increased current on the D.C. side resulting from short-circuit conditions on the A.C. side. The condenser circuit is adapted to be completed at electrodes 12, 13 by an auxiliary arc 7 normally maintained between electrodes 13, 14 by a generator 15. The auxiliary arc is controlled by the resultant field of opposed series and shunt coils 6, 16 associated with the D.C. circuit, the shunt coil normally predominating. Excess current causes the series coil to predominate thus reversing the field and causing the arc 7 to transfer to the electrodes 12, 13 thus completing the condenser circuit and causing extinction of the arc in the main discharge device 3. Where no provision is made for pre-charging the condenser, the discharge current between the main and auxiliary cathodes 4, 5 is due solely to the normal difference in potential between them. Provision may be made, however, for increasing this difference in potential by pre-charging the condenser. This is effected by a transformer 20 operating to charge the condenser through a valve 19 normally maintained conductive by a positive potential on its grid derived from the left half of a battery 21. When the condenser circuit is completed by the arc 7 to effect extinction of the arc in the main discharge device 3, closure of a switch 23 causes the grid of the valve 19 to receive a blocking potential from the right half of the battery 21 thus preventing the circuit containing the main and auxiliary cathodes 4, 5 being maintained through the valve 19. Specification 389,849 is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE47233X | 1930-09-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB388801A true GB388801A (en) | 1933-02-27 |
Family
ID=5625564
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB24101/31A Expired GB388801A (en) | 1930-09-12 | 1931-08-27 | Improvements in and relating to mercury vapour valves |
Country Status (5)
| Country | Link |
|---|---|
| AT (1) | AT130564B (en) |
| CH (1) | CH157168A (en) |
| DK (1) | DK47233C (en) |
| FR (1) | FR40721E (en) |
| GB (1) | GB388801A (en) |
-
1931
- 1931-08-11 DK DK47233D patent/DK47233C/en active
- 1931-08-17 AT AT130564D patent/AT130564B/en active
- 1931-08-27 GB GB24101/31A patent/GB388801A/en not_active Expired
- 1931-09-01 CH CH157168D patent/CH157168A/en unknown
- 1931-09-10 FR FR40721D patent/FR40721E/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CH157168A (en) | 1932-09-15 |
| FR40721E (en) | 1932-08-22 |
| AT130564B (en) | 1932-11-25 |
| DK47233C (en) | 1933-04-18 |
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