DE810786C - Period converter - Google Patents
Period converterInfo
- Publication number
- DE810786C DE810786C DEP38763A DEP0038763A DE810786C DE 810786 C DE810786 C DE 810786C DE P38763 A DEP38763 A DE P38763A DE P0038763 A DEP0038763 A DE P0038763A DE 810786 C DE810786 C DE 810786C
- Authority
- DE
- Germany
- Prior art keywords
- collector
- period converter
- resistor
- frequency
- 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
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
- H02M5/02—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 without intermediate conversion into dc
- H02M5/32—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 without intermediate conversion into dc by dynamic converters
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Current Collectors (AREA)
Description
Die Umformung'von Frequenzen, z. B. 5o Hz in 25 Hz, kann besonders bei größeren Leistungen nur mit rotierenden Maschinen vorteilhaft durchgeführt werden. Bei induktiven Maschinen ist bekanntlich hierzu ein großer Aufwand notwendig, der die Frequenzumformung sehr verteuert.The conversion of frequencies, e.g. B. 50 Hz in 25 Hz, can be carried out advantageously only with rotating machines, especially for higher powers. In the case of inductive machines, it is known that this requires a great deal of effort, which makes frequency conversion very expensive.
Nach der Erfindung wird eine Frequenzumformung mittels des in neuerer Zeit immer mehr zur Anwendung gelangenden Widerstandsumformers vorgeschlagen. Die Vorzüge liegen besonders in dem geringen Materialaufwand, der gegenüber den induktiven Umformern im Verhältnis 1: 20 liegt, dem guten Wirkungsgrad, besonders bei Leistungen bis i ooo Watt, und damit verbunden den geringen Herstellungskosten, die nur einen Bruchteil gegenüber den bekannten betragen.According to the invention, a frequency conversion by means of the resistance converter, which has been used more and more recently, is proposed. The advantages are particularly in the low cost of materials over the inductive transducers in proportion 1: 20, the high efficiency, especially with power ratings up to i ooo watts, and connected to the low production costs, which are only a fraction compared to the known amount.
An Hand der Abb. i sei der Gegenstand der Erfindung beschrieben.The subject matter of the invention is described with reference to FIG.
Es ist Sill ein Synchronmotor, der an das Drehstromnetz UVW angeschlossen ist. Am Wellenende sitzt (beispielsweise) ein Kollektor Kl, auf dem drei Bürsten U ', VI, WI schleifen; dann kommt ein Widerstand fV und darauf ein zweiter Kollektor K21 auf dem wiederum drei Bürsten U., V2) W2 schleifen. Die Kollektoren sind über den Widerstand W, wie Abb. 2 zeigt, miteinander verbunden. Der Kollektor Ki ist vierpolig geschaltet, während der Kollektor K2 zweipolig geschaltet ist. Läuft z. B. der Synchronmotor SM mit n = i5oo Umdr./min, ist er also vierpolig und wird der Netzstrom an die Bürsten UJ, Vp wi angeschlossen, . so erhält man an den Bürsten U', 2 2 p v2, W am Kollektor K eine Frequenz von --5 Hz; oder ist die Netzfrequenz 25 Hz, so muß der Synchronmotor zwei Pole besitzen, die Netzfrequenz wird dann an den zweipoligen Kollektor K2 gelegt, und man erhält dann an dem Kollektor Ki die doppelte Frequenz. Man kann dann wie bei induktiven Maschinen durch Wahl der Synchronmotordrehzahl und Schaltung der Kollektoren beliebige Frequenztransformationen erhalten.It is a synchronous motor that is connected to the UVW three-phase network. At the end of the shaft sits (for example) a collector Kl, on which three brushes U ', VI, WI grind; Then there is a resistor fV and then a second collector K21 on which three brushes U., V2) W2 slide. The collectors are connected to one another via the resistor W, as shown in Fig. 2. The collector Ki has four poles, while the collector K2 has two poles. Runs z. B. the synchronous motor SM with n = i5oo rpm, so he is four poles and the AC power to the brushes UJ, Vp wi is connected. this gives a frequency of -5 Hz at the brushes U ', 2 2 p v2, W at the collector K; or if the mains frequency is 25 Hz, the synchronous motor must have two poles, the mains frequency is then applied to the two-pole collector K2, and double the frequency is then obtained at the collector Ki. As with inductive machines, any desired frequency transformations can then be obtained by selecting the synchronous motor speed and switching the collectors.
Führt man die Punkte a, b des rotierenden Widerstandes an zwei Schleifringe, so erhält man zusätzlich noch einen Gleichstrom. Man kann auch zu gleicher Zeit mehrere Frequenzen erhalten, indem man für jede Frequenz noch einen besonderen Kollektor anordnet.If you lead points a, b of the rotating resistor to two slip rings, you also get a direct current. You can also get several frequencies at the same time by arranging a special collector for each frequency.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEP38763A DE810786C (en) | 1949-04-05 | 1949-04-05 | Period converter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEP38763A DE810786C (en) | 1949-04-05 | 1949-04-05 | Period converter |
Publications (1)
Publication Number | Publication Date |
---|---|
DE810786C true DE810786C (en) | 1951-08-13 |
Family
ID=7376082
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEP38763A Expired DE810786C (en) | 1949-04-05 | 1949-04-05 | Period converter |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE810786C (en) |
-
1949
- 1949-04-05 DE DEP38763A patent/DE810786C/en not_active Expired
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