DE471900C - Process for converting direct current into single or multi-phase alternating current by means of a corresponding number of discharge vessels with control electrodes - Google Patents
Process for converting direct current into single or multi-phase alternating current by means of a corresponding number of discharge vessels with control electrodesInfo
- Publication number
- DE471900C DE471900C DEA40993D DEA0040993D DE471900C DE 471900 C DE471900 C DE 471900C DE A40993 D DEA40993 D DE A40993D DE A0040993 D DEA0040993 D DE A0040993D DE 471900 C DE471900 C DE 471900C
- Authority
- DE
- Germany
- Prior art keywords
- current
- alternating current
- direct current
- discharge vessels
- phase alternating
- 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
- H02M7/445—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Ac-Ac Conversion (AREA)
Description
Verfahren zur Umformung von Gleichstrom in ein- oder mehrphasigen Wechselstrom mittels einer entsprechenden Anzahl von Entladungsgefäßen mit Steuerelektroden DieErfindung betriftAnordnungen zurUmformung von Gleichstrom in ein- oder mehrphasigen Wechselstrom durch Entladungsgefäße und bezweckt, eine möglichst günstige Arbeitsweise der Entladungsapparate durch passende Steuerung derselben herbeizuführen.Process for converting direct current into single or multi-phase Alternating current by means of a corresponding number of discharge vessels with control electrodes The invention relates to arrangements for converting direct current into single or multi-phase Alternating current through discharge vessels and aims at the most favorable way of working to bring about the discharge apparatus by appropriate control of the same.
Es ist bekannt, die Umformungsverluste dadurch klein zu halten, daß man möglichst rechteckige Kurvenformen zu erzielen sucht. Dies geschieht z. B. dadurch, daß man den Stromkreis so ausbildet, daß ein fast konstanter Strom während eines beträchtlichen Teiles eines Wechsels fließt, indem der Strom rasch von Null auf diesen Wert anwächst, dann konstant bleibt und rasch wieder auf Null abnimmt. - Da nun aber in dem Stromkreis Induktivitäten u. dgl. vorhanden sind, so erfolgt kein augenblickliches Ansteigen des Stromes von Null auf den vollen Wert und umgekehrt kein augenblickliches Fallen auf Null, vielmehr steigt der Strom bzw. fällt er der Zeitkonstante des Stromkreises entsprechend nach einer Exponentiälkurv e. Bei veränderlichen Belastungen muß dann zur Erzielung eines sprunglosen Überganges des Stromes von einem Rohr auf das andere der Zeitpunkt des Einsetzens des Stromes in einem Gefäß und des Beginnes des Abklingens ebenfalls entsprechend verändert werden.It is known to keep the deformation losses small in that one tries to achieve as rectangular curve shapes as possible. This happens e.g. B. by that the circuit is designed so that an almost constant current during a A considerable part of a change flows by rapidly increasing the current from zero this value increases, then remains constant and quickly decreases again to zero. - However, since inductances and the like are now present in the circuit, this takes place no instantaneous increase in current from zero to full value and vice versa no instantaneous drop to zero, rather the current rises or falls Time constant of the circuit according to an exponential curve e. When changing Loads must then to achieve a smooth transition of the current from one tube to the other the moment of the onset of the flow in a vessel and the beginning of the decay can also be changed accordingly.
Dies läßt sich erfindungsgemäß dadurch erreichen, daß bei Änderung der Belastung der Entladungsapparate die Steuerspannungen der einzelnen Röhren gegenüber der 18o°-Phasenlage der Anodenspannungen ent-"sprechend in der Phase verschoben werden.According to the invention, this can be achieved by changing the load on the discharge apparatus is compared to the control voltages of the individual tubes The 180 ° phase position of the anode voltages is shifted in phase accordingly will.
In der Abbildung ist eine Anordnung dargestellt, mit der Dreiphasenstrom erzeugt werden kann. Dazu werden die Röhren 2z, 23, 24 benutzt. Die Anoden dieser Röhren sind über die Spulen 27, 28, 29 mit der Drosselspule 25 verbunden, durch welche die Energie der Gleichstromquelle 26 geleitet wird. Die Spulen 30, 31, 32 sind jeweils induktiv mit den Spulen 27, 28, 29 gekoppelt. Sie sind in Dreieck geschaltet und liefern die Energie nach dem Belastungsstromkreis, welcher gleichzeitig die Frequenz bestimmen möge. Die Spulen 27, 28, 29, 30, 31, 32 können Transformatoren mit Eisenkern sein, wenn die Frequenz noch ziemlich tief liegt. Die Gittererregung wird von einer Spulenanordnung 33, 34, 35, 36, 37, 38 geliefert, die derjenigen der Spulen 27 bis 32 ähnelt. Die einzelnen Gitter werden über Belastungswiderstände 41, 42, 43 zur Beschleunigung der Stromübertragung von einem Gitter auf das folgende gespeist. Die Nullpunkte der Spulen 36, 37, 38 sind mit der negativen Klemme des Generators 26 über den Widerstand 40 und die Drosselspule 39 verbunden. Die Spulen 33, 34, 35 werden nun von den Spulen 30, 34 32 derart gespeist, daß sich die Phase der Gitterspannungen entsprechend der Belastung ändern läßt. Dies kann beispielsweise durch veränderliche Anzapfungen an den Spulen 30, 34 32 erreicht werden.The figure shows an arrangement with the three-phase current can be generated. The tubes 2z, 23, 24 are used for this. The anodes of this Tubes are connected to the choke coil 25 through the coils 27, 28, 29 which the energy of the direct current source 26 is conducted. The coils 30, 31, 32 are each inductively coupled to the coils 27, 28, 29. They are connected in a triangle and supply the energy to the load circuit, which at the same time the Determine frequency. The coils 27, 28, 29, 30, 31, 32 can transformers be with an iron core if the frequency is still quite low. The grid excitation is supplied by a coil assembly 33, 34, 35, 36, 37, 38, that of those the coils 27-32 is similar. The individual grids are over load resistors 41, 42, 43 for acceleration the transmission of electricity from a grid fed on the following. The zero points of the coils 36, 37, 38 are negative Terminal of the generator 26 connected via the resistor 40 and the choke coil 39. The coils 33, 34, 35 are now fed by the coils 30, 34 32 such that can change the phase of the grid stresses according to the load. This can achieved, for example, by variable taps on the coils 30, 34, 32 will.
In dem Wechselstromnetz, das von,der Anordnung gespeist wird, befinden sich taktgebende Apparate, Synchrongeneratoren o. dgl., die die Frequenz des Netzes festlegen. Die Frequenz muß jedoch nicht unbedingt durch Organe des Verbraucherkreises bestimmt werden, sondern kann auch beispielsweise durch- Organe, die mit der Hauptstromquelle gekoppelt sind bzw. in den Gitterkreisen der Entladungsgefäße 22, 23, 24 liegen, festgelegt werden. Durch die regelbaren Anzapfungen wird also erreicht, daß den Gittern die richtige Steuerspannung zugeführt wird und daß die Anordnung in jeweils richtiger Phasenlage Wechselstrom dem Netz zuführt.Located in the alternating current network that is fed by the arrangement clock-generating devices, synchronous generators o. the like. That the frequency of the network determine. However, the frequency does not necessarily have to be determined by organs of the consumer group but can also be determined, for example, by- organs connected to the main power source are coupled or lie in the lattice circles of the discharge vessels 22, 23, 24, be determined. By the controllable taps it is achieved that the Grids are supplied with the correct control voltage and that the arrangement in each case correct phase position alternating current feeds the network.
Sollte es von Wichtigkeit sein, die durch die Rechteckskurven entstandenen höheren Harmonischen, in den Wechselstromkreisen zu unterdrücken, so können zwei oder mehrere Sätze von ein- oder mehrphasigen Stromkreisen vereinigt werden. Auf diese Weise läßt sich jede unerwünschte störende.Harmonische unterdrücken.Should it be of importance, the ones created by the rectangular curves higher harmonics to suppress in the alternating current circuits, so can two or several sets of single or multi-phase circuits are combined. on in this way any undesired disturbing harmonic can be suppressed.
Claims (2)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US471900XA | 1922-11-09 | 1922-11-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
DE471900C true DE471900C (en) | 1929-02-18 |
Family
ID=21947546
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEA40993D Expired DE471900C (en) | 1922-11-09 | 1923-11-09 | Process for converting direct current into single or multi-phase alternating current by means of a corresponding number of discharge vessels with control electrodes |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE471900C (en) |
-
1923
- 1923-11-09 DE DEA40993D patent/DE471900C/en not_active Expired
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