GB645887A - Improvements in or relating to frequency conversion systems - Google Patents
Improvements in or relating to frequency conversion systemsInfo
- Publication number
- GB645887A GB645887A GB32794/47A GB3279447A GB645887A GB 645887 A GB645887 A GB 645887A GB 32794/47 A GB32794/47 A GB 32794/47A GB 3279447 A GB3279447 A GB 3279447A GB 645887 A GB645887 A GB 645887A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ignitrons
- mid
- dec
- frequency conversion
- group
- 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
- 238000006243 chemical reaction Methods 0.000 title abstract 2
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 230000005284 excitation Effects 0.000 abstract 1
- 230000007935 neutral effect Effects 0.000 abstract 1
- 238000004804 winding Methods 0.000 abstract 1
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
- H02M5/00—Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases
- H02M5/005—Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases using discharge tubes
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Ac-Ac Conversion (AREA)
Abstract
645,887. Frequency changing. WESTING- HOUSE ELECTRIC INTERNATIONAL CO. Dec. 12, 1947, No. 32794. Convention date, Dec. 14, 1946. Drawings to Specification. [Class 38 (ii)] A frequency conversion system comprises a plurality of electronic valves for interchanging power between two alternating current circuits characterized by two groups of valves, each group having a separate cathode bus-bar, a mid-tapped transformer connected across the two cathode bus-bars, and means to connect this mid-point to the neutral point of the supply. Fig. 1 and the description thereof in this Specification are substantially the same as in Specification 645,950. A further embodiment comprises an arrangement to operate on a six-phase supply having twelve ignitrons with their anodes connected to the phases in pairs, one in each group. The secondary windings of the ignitor coupling transformers are centretapped, thus each energizes the excitation electrodes of two ignitrons. The auxiliary anodes are energized without parallel phase energization as in the alternative embodiment in Specification 645,950.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US645887XA | 1946-12-14 | 1946-12-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB645887A true GB645887A (en) | 1950-11-08 |
Family
ID=22056963
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB32794/47A Expired GB645887A (en) | 1946-12-14 | 1947-12-12 | Improvements in or relating to frequency conversion systems |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB645887A (en) |
-
1947
- 1947-12-12 GB GB32794/47A patent/GB645887A/en not_active Expired
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