GB400635A - An arrangement for converting the frequency of alternating current by means of controlled arc rectifiers - Google Patents
An arrangement for converting the frequency of alternating current by means of controlled arc rectifiersInfo
- Publication number
- GB400635A GB400635A GB4994/32A GB499432A GB400635A GB 400635 A GB400635 A GB 400635A GB 4994/32 A GB4994/32 A GB 4994/32A GB 499432 A GB499432 A GB 499432A GB 400635 A GB400635 A GB 400635A
- Authority
- GB
- United Kingdom
- Prior art keywords
- control
- frequency
- converter
- speed
- alternating 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
-
- 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)
- Control Of Ac Motors In General (AREA)
Abstract
400,635. Control of A.C. motors. SIEMENSSCHUCKERTWERKE AKT.- GES., Siemensstadt, Berlin. Feb. 19, 1932, No. 4994. Convention date, Feb. 20, 1931. [Class 38 (iii).] A frequency changer employing controlled arc rectifiers in which the grid voltage comprises components of both frequencies, is used to control the speed of alternating current machines. The frequency of the output of the converter may be increased from zero upwards by control of the frequency of one of the grid voltages and hence the converter may be used for running up asynchronous motor. The speed of non-synchronous machines may be controlled within predetermined limits, e.g. 5 per cent above or below synchronism, as shown in the Figure, by connecting a converter between the rotor and the supply line 20, the rotor winding forming the output of the device. The grids are energized from the line 20 and from a frequency changer 40 which may be used in conjunction with a copying machine 42, both machines being on the shaft of the main machine. Control of the magnitude and phase of the grid voltages is effected manually by transformers 43 or 41 so as to control the magnitude and direction of the slip energy flow and so control the speed of the machine.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE400635X | 1931-02-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB400635A true GB400635A (en) | 1933-10-19 |
Family
ID=6401153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4994/32A Expired GB400635A (en) | 1931-02-20 | 1932-02-19 | An arrangement for converting the frequency of alternating current by means of controlled arc rectifiers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB400635A (en) |
-
1932
- 1932-02-19 GB GB4994/32A patent/GB400635A/en not_active Expired
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