DE852264C - Arrangement for the control of converters working with grid-controlled vapor or gas discharge vessels - Google Patents
Arrangement for the control of converters working with grid-controlled vapor or gas discharge vesselsInfo
- Publication number
- DE852264C DE852264C DEL8131A DEL0008131A DE852264C DE 852264 C DE852264 C DE 852264C DE L8131 A DEL8131 A DE L8131A DE L0008131 A DEL0008131 A DE L0008131A DE 852264 C DE852264 C DE 852264C
- Authority
- DE
- Germany
- Prior art keywords
- grid
- control
- motor
- arrangement
- synchronous
- 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
- H02M1/00—Details of apparatus for conversion
- H02M1/02—Circuits specially adapted for the generation of grid-control or igniter-control voltages for discharge tubes incorporated in static converters
- H02M1/04—Circuits specially adapted for the generation of grid-control or igniter-control voltages for discharge tubes incorporated in static converters for tubes with grid control
- H02M1/042—Circuits specially adapted for the generation of grid-control or igniter-control voltages for discharge tubes incorporated in static converters for tubes with grid control wherein the phase of the control voltage is adjustable with reference to the AC voltage
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Eletrric Generators (AREA)
Description
Zur Umformung von Wechselstrom einer Frequenz in solchen anderer Frequenz mit gittergesteuerten Dampf- oder Gasentladungsgefäßen werden Steuereinrichtungen benötigt, die die Gitter in einem bestimmten Takt steuern. Dieser Takt ist sowohl von der Frequenz des Primärnetzes als auch von der des Sekundärnetzes bestimmt. Ist nun im Sekundärnetz keine Spannung vorhanden, d. h. arbeitet der Umrichter also auf ein zu speisendes Netz, dann muß die Spannung für die Frequenzhaltung des Sekundärnetzes einer besonderen Stromquelle entnommen werden. Hierzu verwendet man kleine Synchron-Synchron-Maschinenumformer, die also die gewünschte Steuerfrequenz liefern.For converting alternating current of one frequency into another frequency control devices with grid-controlled vapor or gas discharge vessels are used that control the grids in a certain cycle. This tact is both determined by the frequency of the primary network as well as that of the secondary network. If there is no voltage in the secondary network, i. H. the converter works on a network to be fed, then the voltage for the frequency maintenance of the secondary network must be taken from a special power source. For this purpose, small synchronous-synchronous machine converters are used, which therefore deliver the desired control frequency.
Bei dem Umrichter für die Wiesentalbahn ist die Steuerungsanordnung bekanntlich so getroffen, daß zwei Steuerröhren in Reihe geschaltet sind, von denen die eine im go-Hz-Takt und die zweite mit 162/s Hz gesteuert wird. Diese letztere Steuerspannung wird nun dem obengenannten Maschinenumformer entnommen, der motorseitig aus einer sechspoligen und generatorseitig aus einer zweipoligen Maschine besteht und somit also das gewünschte Frequenzverhältnis herstellt.The control arrangement is on the converter for the Wiesentalbahn as is known, made so that two control tubes are connected in series, one of which one is controlled in the go-Hz cycle and the second with 162 / s Hz. This latter The control voltage is now taken from the above-mentioned machine converter, the motor-side consists of a six-pole machine and a two-pole machine on the generator side and thus produces the desired frequency ratio.
In letzter Zeit sind nun Vorschläge bekanntgeworden, die nicht mit der Reihenschaltung von zwei Röhren, sondern mit einer Steuerfrequenz von 33'/s Hz, d. h. der doppelten Einphasenfrequenz als Grundfrequenz arbeiten. Bei dieser Steuerfrequenz ist es möglich, mit weniger Röhren oder auch gänzlich ohne Röhren auszukommen.Lately, proposals have become known that do not include the series connection of two tubes, but with a control frequency of 33 '/ s Hz, i.e. H. the double single-phase frequency work as the base frequency. At this Control frequency, it is possible with fewer tubes or even without tubes at all get along.
Es erweist sich jedoch als notwendig, diesen Umformer für die Gittersteuerung so auszuführen, daß die Phasenlage der Steuerimpulse dauernd exakt erhalten bleibt.However, it turns out to be necessary to use this converter for grid control to be carried out in such a way that the phase position of the control pulses is permanently maintained exactly.
Nun ändert sich der Polradwinkel eines Synchronmotors in Abhängigkeit von verschiedenen Größen. Er wächst mit zunehmender Belastung und ferner mit fallender Wechselspannung sowie kleiner !, werdender Gleichstromerregung. Wenn auch diese Werte keinen großen Änderungen unterworfen sind, so können doch die betriebsmäßig vorkommenden Spannungsschwankungen und Änderungen der Reibungsverhältnisse schon so große Winkelverschiebungen verursachen, daß hierdurch die Steuerung des Umrichters nicht mit der erforderlichen Genauigkeit arbeitet.Now the rotor angle of a synchronous motor changes as a function of different sizes. It grows with increasing load and further with falling AC voltage as well as smaller!, Increasing DC excitation. Even if this Values are not subject to major changes, but operationally they can occurring voltage fluctuations and changes in the friction conditions cause such large angular displacements that this leads to the control of the converter does not work with the required accuracy.
Gegenstand der Erfindung ist nun eine Anordnung für die Gittersteuerung, damit der Phasenwinkel unabhängig von diesen Schwankungen möglichst genau erhalten bleibt. Zu diesem Zweck erhält dieser Umformer einen zusätzlichen Antriebsmotor, der durch einen selbsttätigen Regler derartig geregelt wird, daß er die volle Antriebsleistung des Umformers liefert, daß also der an das speisende Netz angeschlossene Synchronmotor keine Wirkleistung herzugeben braucht. Dieser Motor wird auf 'diese Weise stets mit dem konstanten Phasenwinkel o betrieben.The invention now relates to an arrangement for the grid control, so that the phase angle is obtained as accurately as possible regardless of these fluctuations remain. For this purpose, this converter receives an additional drive motor, which is controlled by an automatic controller in such a way that it has the full drive power of the converter delivers, that is, the synchronous motor connected to the supply network does not need to give up any real power. This engine is always going that way operated with the constant phase angle o.
Der Gegenstand der Erfindung sei an Hand der Zeichnung näher erläutert.The subject matter of the invention will be explained in more detail with reference to the drawing.
An das 5o-Hz-Netz ist der Synchronmotor SM angeschlossen. Ferner wird von dem gleichen Netz ein Gleichstrommotor GM über einen gittergesteuerten Gleichrichter Gr gespeist. In der Zuleitung zum Synchronmotor liegt nun ein Meßglied M, das auf die Gittersteuerung St des Gleichrichters derartig arbeitet, daß die vom Netz aufgenommene Leistung des Synchronmotors auf einem bestimmten Betrag, vorzugsweise auf dem Wert o, konstant gehalten wird.The SM synchronous motor is connected to the 50 Hz network. Furthermore, a direct current motor GM is fed from the same network via a grid-controlled rectifier Gr. In the supply line to the synchronous motor there is now a measuring element M which operates on the grid control St of the rectifier in such a way that the power of the synchronous motor consumed by the network is kept constant at a certain amount, preferably at the value o.
Der Synchrongenerator SG arbeitet dann auf die Gittersteuerung Gt des Umrichters. Mit der beschriebenen Anordnung ist es möglich, die Phasenlage der Steuerspannung in einem bestimmten konstanten Verhältnis zu der des speisenden Netzes zu halten.The synchronous generator SG then works on the grid control Gt of the converter. With the arrangement described, it is possible to keep the phase position of the control voltage in a certain constant ratio to that of the feeding network.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEL8131A DE852264C (en) | 1951-01-18 | 1951-01-18 | Arrangement for the control of converters working with grid-controlled vapor or gas discharge vessels |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEL8131A DE852264C (en) | 1951-01-18 | 1951-01-18 | Arrangement for the control of converters working with grid-controlled vapor or gas discharge vessels |
Publications (1)
Publication Number | Publication Date |
---|---|
DE852264C true DE852264C (en) | 1952-10-13 |
Family
ID=7257387
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEL8131A Expired DE852264C (en) | 1951-01-18 | 1951-01-18 | Arrangement for the control of converters working with grid-controlled vapor or gas discharge vessels |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE852264C (en) |
-
1951
- 1951-01-18 DE DEL8131A patent/DE852264C/en not_active Expired
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