DE491991C - Twelve-phase transformer in which the primary windings of two transformers are connected in a star or delta series - Google Patents
Twelve-phase transformer in which the primary windings of two transformers are connected in a star or delta seriesInfo
- Publication number
- DE491991C DE491991C DEA51648D DEA0051648D DE491991C DE 491991 C DE491991 C DE 491991C DE A51648 D DEA51648 D DE A51648D DE A0051648 D DEA0051648 D DE A0051648D DE 491991 C DE491991 C DE 491991C
- Authority
- DE
- Germany
- Prior art keywords
- twelve
- transformers
- star
- primary windings
- 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
-
- 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
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/06—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes without control electrode or semiconductor devices without control electrode
- H02M7/068—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes without control electrode or semiconductor devices without control electrode mounted on a transformer
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Ac-Ac Conversion (AREA)
Description
Zwölfphasentransformator, bei dem die Primärwicklungen zweier Transformatoren in Stern bzw. Dreieck hintereinandergeschaltet sind In der Patentschrift 407 844 ist eine Schaltung für einen zwölfphasigen Quecksüberdampfgleichrichter beschrieben, der von zwei Transformatoren gespeist wird, deren Primärwicklungen hintereinandergeschaltet sind, während die in ihren Nullpunkten vereinigten beiden Sechsphasensekundärwicklungen in Sternschaltung ein Zwölfphasensystem ergeben.Twelve-phase transformer in which the primary windings of two transformers In the patent specification 407 844 a circuit for a twelve-phase mercury vapor rectifier is described, which is fed by two transformers whose primary windings are connected in series are, while the two six-phase secondary windings combined in their zero points result in a twelve-phase system in star connection.
Versuche haben gezeigt, daß bei Verwendung zweier in Stern geschalteter normaler Sechsphasensekundärwicklungen sich nicht unter allen Umständen eine vollkommene Zwölfphasenbelastung des Gleichrichters ergibt. Durch die bei dieser Schaltung auftretenden Streuungen wird nämlich das System schon bei geringer Belastung zu einem Sechsphasensystem zusammengezogen, so daß der eigentliche Zweck nicht erreicht wird.Tests have shown that when using two star-connected normal six-phase secondary windings are not perfect in all circumstances Twelve-phase loading of the rectifier results. Due to the occurring in this circuit This is because the system turns into a six-phase system even at low loads contracted so that the actual purpose is not achieved.
Dieser Nachteil wird durch die Schaltung gemäß der Erfindung vermieden. Erfindungsgemäß werden die Primärwicklungen der beiden Transformatoren hintereinandergeschaltet, und zwar wird die eine in Stern-, die andere in Dreieckschaltung ausgeführt, und gleichzeitig werden die Sekundärwicklungen beider Transformatoren mit Doppelzickzack-, Einfachzickzack- oder Polygonschaltung versehen. Hierdurch wird erreicht, daß in jedem Zeitpunkt drei einander benachbarte Anoden des angeschlossenen Zwölfphasengleichrichters gleichzeitig arbeiten, so daß die Vorteile der Zwölfphasenschaltung voll zur Wirkung kommen.This disadvantage is avoided by the circuit according to the invention. According to the invention, the primary windings of the two transformers are connected in series, namely one in star, the other in delta, and at the same time, the secondary windings of both transformers with double zigzag, Single zigzag or polygon circuit provided. This ensures that in at any point in time three adjacent anodes of the connected twelve-phase rectifier work at the same time, so that the advantages of the twelve-phase circuit are fully effective come.
In der Zeichnung sind Ausführungsbeispiele der Erfindung dargestellt. Abb. z zeigt die bekannte Anordnung. In der Abbildung sind die Wicklungen und Phasen der Transformatoren A und B im Polardiagramm dargestellt. Die Primärwicklungen Ui, V1, W, des Transformators A sind in unverketteter Sternschaltung geschaltet und die Primärwicklungen U, V, W des Transformators B in Dreieckschaltung. Die Sekundärwicklungen u1, yi, wi, xi, vi, zi in Sternschaltung gehören zum Transformator A und die Wicklungen u, y, w, x, v, x gleichfalls in Sternschaltung zum Transformator B. Die entsprechenden Primärwicklungen sind hintereinandergeschaltet, während die im Nullpunkt miteinander verbundenen Sekundärwicklungen parallel geschaltet sind, aber gegeneinander um 3o elektrische Grade verschoben sind.Exemplary embodiments of the invention are shown in the drawing. Fig. Z shows the known arrangement. The figure shows the windings and phases of transformers A and B in the polar diagram. The primary windings Ui, V1, W, of the transformer A are connected in a non-chained star connection and the primary windings U, V, W of the transformer B are connected in a delta connection. The secondary windings u1, yi, wi, xi, vi, zi in star connection belong to transformer A and the windings u, y, w, x, v, x also in star connection to transformer B. The corresponding primary windings are connected in series, while those in the zero point Secondary windings connected to one another are connected in parallel, but are shifted from one another by 3o electrical degrees.
Abb.2 stellt die Anordnung der mit den zwölf Phasen verbundenen Anoden des Gleichrichters dar.Fig.2 shows the arrangement of the anodes connected to the twelve phases of the rectifier.
Abb. 3 zeigt eine Anordnung der Sekundärwicklungen nach der Erfindung in Doppelzickzackschaltung. Auch hier sind die Nullpunkte beider Systeme zu dem gemeinsamen Nullpunkt o geführt, zu welchem der Strom der Gleichrichteranlage zurückfließt, der aus den zwölf Phasen u1, u, y1, y, w1, w, XI, x, v1, v, x1, z über die Anoden des Gleichrichters der Kathode zufließt.Fig. 3 shows an arrangement of the secondary windings according to the invention in a double zigzag circuit. Here, too, the zero points of both systems are led to the common zero point o, to which the current from the rectifier system flows back, which consists of the twelve phases u1, u, y1, y, w1, w, XI, x, v1, v, x1, z flows through the anodes of the rectifier to the cathode.
Zur Erläuterung der Wirkungsweise der Anordnung gemäß der Erfindung betrachten wir an Hand der Abb. = und 3 den Stromverlauf in irgendeinem Zeitpunkt, z. B. wenn die Phase u1 der Wicklung B die höchste Spannung gegen den Nullpunkt besitzt und infolgedessen stromführend ist, wie dies in Abb.3 durch Pfeile angedeutet ist. Der Sekundärstrom in der Phase et, bewirkt das Fließen eines Stromes in der zugehörigen Primärwicklung (Wicklung B der Abb. z), der auch über die mit der Primärwicklung B in Reihe geschaltete Primärwicklung A fließen muß, wie dies in Abb. r gleichfalls durch Pfeile angedeutet ist. Der die Primärwicklung A durchfließende Strom ruft nun in der zugehörigen Sekundärwicklung A solche zusätzliche Spannungen hervor, daß auch deren Phasen z und u Ströme führen müssen, deren Summe unter Berücksichtigung des Übersetzungsverhältnisses den Primärströmen und damit dem Strom in der Phase u1 der Sekundärwicklungen B gleich ist. In dem betrachteten Zeitpunkt werden also durch den Strom der Phase u1 auch die beiden benachbarten Anoden, die an die Phasen z und u angeschlossen sind, zur Mitarbeit herangezogen. Entsprechendes gilt für jeden anderen Zeitpunkt.To explain the mode of operation of the arrangement according to the invention, we consider the course of the current at any point in time, e.g. B. when phase u1 of winding B has the highest voltage towards zero and is consequently live, as indicated by arrows in Figure 3. The secondary current in phase et causes a current to flow in the associated primary winding (winding B in Fig. Z), which must also flow through primary winding A, which is connected in series with primary winding B, as shown by arrows in Fig. R is indicated. The current flowing through the primary winding A now causes such additional voltages in the associated secondary winding A that its phases z and u must also carry currents whose sum, taking into account the transformation ratio, is equal to the primary currents and thus the current in phase u1 of the secondary windings B. . At the point in time under consideration, the two adjacent anodes connected to phases z and u are also used to cooperate with the current of phase u1. The same applies to any other point in time.
Aus Vorstehendem ergibt sich also, daß bei der gewählten Schaltung stets drei Anoden gleichzeitig arbeiten, da die primären und sekundären Amperewindungen des Gesamtsystems nur dann kompensiert sind, wenn mindestens drei Anoden gleichzeitig Strom liefern und jeder Transformator die Hälfte der Gesamtleistung abgibt.From the above it follows that with the selected circuit Always three anodes working at the same time because the primary and secondary ampere-turns of the overall system are only compensated if at least three anodes are used at the same time Supply electricity and each transformer delivers half of the total power.
An Stelle der Doppelzickzackschaltung kann auch die gleichwertige Einfachzickzackschaltung nach Abb. q. oder die Polygonschaltung nach Abb.g verwendet werden.Instead of the double zigzag circuit, the equivalent Single zigzag circuit as shown in Fig. Q. or the polygon circuit according to Fig.g is used will.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEA51648D DE491991C (en) | 1927-08-02 | 1927-08-03 | Twelve-phase transformer in which the primary windings of two transformers are connected in a star or delta series |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE294962X | 1927-08-02 | ||
DEA51648D DE491991C (en) | 1927-08-02 | 1927-08-03 | Twelve-phase transformer in which the primary windings of two transformers are connected in a star or delta series |
Publications (1)
Publication Number | Publication Date |
---|---|
DE491991C true DE491991C (en) | 1930-02-19 |
Family
ID=25782326
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEA51648D Expired DE491991C (en) | 1927-08-02 | 1927-08-03 | Twelve-phase transformer in which the primary windings of two transformers are connected in a star or delta series |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE491991C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE9412106U1 (en) * | 1994-07-27 | 1994-09-22 | Siemens AG, 80333 München | Circuit arrangement for transformers |
-
1927
- 1927-08-03 DE DEA51648D patent/DE491991C/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE9412106U1 (en) * | 1994-07-27 | 1994-09-22 | Siemens AG, 80333 München | Circuit arrangement for transformers |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE1244946B (en) | Step switching and control device for transformers | |
DE2323069B2 (en) | CONVERTER ARRANGEMENT OF SEVERAL SUB-CONVERTERS CONNECTED IN SERIES WITH BRIDGING SWITCH | |
DE491991C (en) | Twelve-phase transformer in which the primary windings of two transformers are connected in a star or delta series | |
DE627884C (en) | Rectifier with grid-controlled discharge paths in Graetz circuit, especially for control purposes | |
DE710434C (en) | Device for controlling multi-anode power converters | |
DE526811C (en) | Additional device for the use of X-ray diagnostic systems with a cell rectifier fed by a high voltage transformer for therapeutic purposes | |
DE467403C (en) | Device for generating high-voltage direct current from a direct current source of low voltage, in particular for operating X-ray pipes | |
DE614706C (en) | Process for converting direct current into alternating current or alternating current at a different frequency using one or more capacitors | |
DE641066C (en) | Twelve-phase rectifier transformer to produce a multiple overlap of the anode currents, the primary winding of which consists of two three-phase systems connected in series | |
DE716745C (en) | Device to improve the commutation in multi-phase rectifiers working with mechanically moved contacts | |
DE646827C (en) | Multiple converters | |
DE709712C (en) | Arrangement for controlling inverters working with grid-controlled vapor or gas discharge vessels | |
DE609295C (en) | Transformer circuit for evenly distributing the power to metal vapor rectifiers working in parallel with six phases | |
DE595143C (en) | Switching arrangement for generating a multiplied direct voltage from a polyphase, in particular three-phase alternating voltage | |
DE684515C (en) | Arrangement for generating the grid voltages of multi-phase converters | |
DE663865C (en) | Arrangement for the mutual exchange of power between an alternating current and a direct current network | |
DE669817C (en) | Arrangement for limiting short-circuit currents in converting devices operating with controlled discharge sections, in particular grid-controlled vapor or gas discharge sections | |
DE896091C (en) | Multi-phase choke with two nodes | |
DE690103C (en) | Device for regulating the voltage of direct current motors, in particular vehicle motors | |
DE661396C (en) | Device for the forced commutation of converter arrangements | |
DE2344760C3 (en) | Device for direct current measurement in a converter circuit arrangement | |
DE528163C (en) | Device for converting three-phase current into four-phase current, in particular for feeding four-phase rectifiers from a three-phase network | |
DE548802C (en) | Arrangement for the generation of high-voltage direct current from alternating current by means of transformers and valves connected to their secondary windings with rectifier effect | |
DE649354C (en) | Protection device against overloads for inverters | |
DE659463C (en) | Arrangement for feeding rectifiers |