DE555712C - Voltage regulation of three-phase systems - Google Patents
Voltage regulation of three-phase systemsInfo
- Publication number
- DE555712C DE555712C DES64158D DES0064158D DE555712C DE 555712 C DE555712 C DE 555712C DE S64158 D DES64158 D DE S64158D DE S0064158 D DES0064158 D DE S0064158D DE 555712 C DE555712 C DE 555712C
- Authority
- DE
- Germany
- Prior art keywords
- additional
- voltage
- voltage regulation
- phase systems
- phase
- 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
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/10—Regulating voltage or current
- G05F1/12—Regulating voltage or current wherein the variable actually regulated by the final control device is ac
- G05F1/24—Regulating voltage or current wherein the variable actually regulated by the final control device is ac using bucking or boosting transformers as final control devices
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Automation & Control Theory (AREA)
- Ac-Ac Conversion (AREA)
Description
Spannungsregelung von Drehstromanlagen nach Patent 553 153 Im Hauptpatent ist die Spannungsregelung von Drehstromanlagen mit Zusatztransformatoren beschrieben, bei der Zwischenstufen: in der zugesetzten Spannung dadurch erreicht werden, daß die drei Abteilungen der Erregerwicklung des Zusatztransformators der Reihe nach an Spannungen des Drehstromsy'stems von verschiedener Phasenlage angeschlossen werden.Voltage regulation of three-phase systems according to patent 553 153 in the main patent the voltage regulation of three-phase systems with additional transformers is described, at the intermediate stages: in the added voltage can be achieved in that the three departments of the excitation winding of the auxiliary transformer one after the other be connected to voltages of the three-phase system with different phase positions.
Die niedrige Eigenimpedanz von Zusatztransformatoren bringt es mit sich, daß diese ohne Verwendung besonderer Schutzmittel den mechanischen Beanspruchungen durch Kurzschlüsse im allgemeinen nicht gewachsen sind. Anderseits wird bei Vornahme der Spannungsregulierung mit Hilfe von Anzapfungen am Haupttransformator die Kurzschlußfestigkeit des letzteren ebenfalls beeinträchtigt.The low self-impedance of additional transformers brings it with it that this can withstand mechanical stresses without the use of special protective equipment have generally not grown due to short circuits. On the other hand, when making the voltage regulation with the help of taps on the main transformer the short-circuit strength the latter is also affected.
Nachstehend beschriebene Erfindung ist eine Weiterbildung der im Hauptpatent beschriebenen Spannungsregelung, die es ermöglicht, ohne die Aufstellung eines besonderen Zusatztransformators Zwischenstufen in der zu- oder abgesetzten Spannung zu erreichen. Zu diesem Zweck wird die Zusatzspannung in an sich bekannter Weise im Haupttransformator selbst mittels Zusatzwindungen erzeugt. Die mit je einer Phasenwicklung zusammenwirkenden Zusatzwindungen werden erfindungsgemäß von je einem der drei Schenkel erregt. Der Vektor jeder Zusatzspannung wird der Reihe nach in die gleiche Lage gebracht, wie dies im Hauptpatent näher beschrieben ist. Gegenüber der Anordnung von Anzapfungen im Haupttransformator besteht der Vorteil einer geringeren Klemmenzahl; vor allem aber besteht der Unterschied, daß für alle Spannungsstufen nur eine konstante Zusatzspannung in jeder Phase ,erzeugt wird, wodurch es ermöglicht ist, die Zusatzspule, etwa durch Verteilung ihrer Windungen auf die ganze Spulenhöhe der Hauptwicklungen, so anzuordnen, daß die Kurzschlußfestigkeit des Transformators in keiner Weise beeinträchtigt wird. Die Einstellung auf die Zusatzspannung Null erfolgt bei dieser Ausführung einfach durch Abschalten der Zusatzwindungen. Das Umschalten auf andere Spannungsstufen kann ebenfalls in einfacher Weise, entweder durch Umklemmen oder, ähnlich wie im Hauptpatent beschrieben, mit Hilfe von Schaltapparaten erfolgen.The invention described below is a further development of the voltage regulation described in the main patent, which makes it possible to achieve intermediate stages in the added or reduced voltage without the installation of a special additional transformer. For this purpose, the additional voltage is generated in a manner known per se in the main transformer itself by means of additional windings. According to the invention, the additional turns interacting with one phase winding each are excited by one of the three legs. The vector of each additional voltage is sequentially brought into the same position, as described in more detail in the main patent. Compared to the arrangement of taps in the main transformer, there is the advantage of a lower number of terminals; Above all, there is the difference that only one constant additional voltage is generated in each phase for all voltage levels, which makes it possible to arrange the additional coil, for example by distributing its turns over the entire coil height of the main windings, so that the short-circuit strength of the transformer is not affected in any way. The setting to the additional voltage zero takes place in this version simply by switching off the additional windings. Switching to other voltage levels can also be done in a simple manner, either by reconnecting or, similar to that described in the main patent, with the aid of switching devices.
Die Zusatzwindungen können auch im Primärkreis des Haupttransformators angeordnet werden und wahlweise auf die Erregung der drei Schenkel einwirken.The additional turns can also be in the primary circuit of the main transformer are arranged and optionally act on the excitation of the three legs.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DES64158D DE555712C (en) | Voltage regulation of three-phase systems |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DES64158D DE555712C (en) | Voltage regulation of three-phase systems |
Publications (1)
Publication Number | Publication Date |
---|---|
DE555712C true DE555712C (en) | 1932-07-28 |
Family
ID=7496944
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DES64158D Expired DE555712C (en) | Voltage regulation of three-phase systems |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE555712C (en) |
-
0
- DE DES64158D patent/DE555712C/en not_active Expired
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