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DE436530C - Voltage regulation on six-phase and multi-phase metal vapor rectifiers with step switching, in which the voltage of one phase after the other is changed by shifting the zero point of the in-phase secondary winding of an additional transformer - Google Patents

Voltage regulation on six-phase and multi-phase metal vapor rectifiers with step switching, in which the voltage of one phase after the other is changed by shifting the zero point of the in-phase secondary winding of an additional transformer

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Publication number
DE436530C
DE436530C DES60777D DES0060777D DE436530C DE 436530 C DE436530 C DE 436530C DE S60777 D DES60777 D DE S60777D DE S0060777 D DES0060777 D DE S0060777D DE 436530 C DE436530 C DE 436530C
Authority
DE
Germany
Prior art keywords
phase
voltage
secondary winding
zero point
shifting
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
Application number
DES60777D
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens Schuckertwerke AG
Original Assignee
Siemens Schuckertwerke AG
Publication date
Priority to DES60777D priority Critical patent/DE436530C/en
Application granted granted Critical
Publication of DE436530C publication Critical patent/DE436530C/en
Expired legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS 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
    • H02M7/00Conversion of AC power input into DC power output; Conversion of DC power input into AC power output
    • H02M7/02Conversion of AC power input into DC power output without possibility of reversal
    • H02M7/04Conversion of AC power input into DC power output without possibility of reversal by static converters
    • H02M7/06Conversion 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

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Rectifiers (AREA)
  • Ac-Ac Conversion (AREA)

Description

geändert wird.will be changed.

Die einfachste Art der Spannungsregelung bei Gleichrichtern ist die mit Hilfe eines Stufentransformators durch Verschieben des Nullpunktes. Man führt jede der Phasen des Transformators an je einen Kontakt des Stufenschalters und führt an der Kontaktreihe entlang einen Gegenkontakt, der den Nullpunkt bildet. Die Reihenfolge, in der die nebeneinanderliegenden Kontakte mit den ίο Phasen verbunden werden, ist bei dreiphasigen Gleichrichtern ohne Belang. Anders dagegen liegen die Verhältnisse bei sechs- und mehrphasigen Gleichrichtern. Führt man nämlich die Phasen in ihrer natürlichen Reihenfo'ge zu den Kontakten des Stufenschalters, derart, daß der erste Kontakt der Reihe mit der ersten Phase, der. zweite mit der folgenden USAV. verbunden werden, so kann, wie im folgenden noch näher dargelegt wird, leicht ein Verlöschen des Gleichrichters eintreten.The simplest type of voltage regulation for rectifiers is with the help of a step transformer by shifting the zero point. Each of the phases of the transformer is connected to a contact on the tap changer and leads along the row of contacts a mating contact, which forms the zero point. The order in which the adjacent contacts are connected to the ίο phases is three-phase Rectifiers of no concern. On the other hand, the ratios are different for six and polyphase rectifiers. If you lead the phases in their natural order to the contacts of the tap changer in such a way that the first contact in the series with the first phase, the. second with the following USAV. can be connected so how will be explained in more detail below, the rectifier can easily go out.

Um dies zu verhindern, wird gemäß derTo prevent this, according to the

Erfindung die Spannung an den einzelnem !Phasen in der Reihenfolge erhöht, wie sie sich aus der zeitlichen Folge im Spannungsdiagramm ergibt.Invention the voltage on each phase is increased in the order in which they are results from the time sequence in the voltage diagram.

Die Wirkungsweise der Erfindung sei im folgenden an Hand der Zeichnung, welche als Beispiel ein Schaltbild für die Spannungsregelung darstellt, näher erläutert.The mode of operation of the invention is shown below with reference to the drawing, which represents a circuit diagram for the voltage regulation as an example, explained in more detail.

In der Abb. 1 ist T die Sekundärwicklung des Haupttransformators, dessen Primärwicklung der Einfachheit wegen nicht mit dargestellt ist. Mit dem Haupttransformator in Reihe liegt die Sekundärwicklung des Stufentransformator S2, dessen Primärwicklung S1 aus der Sekundärwicklung des Haupttransformators T gespeist wird. Die Spannung wird durch Verschieben des Nullpunktkontaktes an dem Stufenschalter O geregelt. Jede der sechs Phasen X1Y1 Z1 U3 V1W des Haupttransformators T ist zu einer der sechs Anoden A des Gleichrichters G geführt. Die Lage der Phasen zueinander ergibt sich aus dem Vektordiagramm der Abb. 2. Die Spannungen 0-X und 0-U1 0-Y und 0-V1 0-Z und 0-W sind je um i8o° gegeneinander versetzt.In Fig. 1, T is the secondary winding of the main transformer, the primary winding of which is not shown for the sake of simplicity. The secondary winding of the step transformer S 2 , whose primary winding S 1 is fed from the secondary winding of the main transformer T , is connected in series with the main transformer. The voltage is regulated by moving the zero point contact on the step switch O. Each of the six phases X 1 Y 1 Z 1 U 3 V 1 W of the main transformer T is led to one of the six anodes A of the rectifier G. The position of the phases in relation to one another is shown in the vector diagram in Fig. 2. The voltages 0-X and 0-U 1 0-Y and 0-V 1 0-Z and 0-W are each offset from one another by 180 °.

Das naheliegendste wäre es nun, die Phasen in der Reihenfolge an die Kontakte des Stufenschalters anzuschließen, wie sie aus dem Transformator herausgeführt sind. Also in der Folge X-Y1 Z-U1 V-W. Wie sich aber aus dem Vektordiagramm der Abb. 2 ergibt, würde bei dieser Reihenfolge die Spannung zunächst nur an jeder zweiten Phase X1Y1Z und dann erst an den dazwischenliegendem U1V1W erhöht werden. Dadurch wird die Zeit, während der der Gleichrichter aus diesen Phasen Strom entnimmt, verkürzt, und die dort angeschlossenen Anoden können besonders bei größeren Spannungsstufen verlöschen. Wird jedoch, und darin besteht die Erfindung, die Spannung an den einzelnen Phasen in der Reihenfolge erhöht, wie sie sich beim Umfahren des Vektordiagrammes, also z. B. in der Reihenfolge X1 W1 Y1 U1 Z1V, ergibt, so erfolgt die Spannungserhöhung in gleichmäßigen Zeitabschnitten. Verkürzt wird lediglich die Zeit der Stromzufuhr jedesmal bei der letzten Phase, was natürlich für die Ausnutzung und Belastung des Gleichrichters wesentlich günstiger ist, als wenn dieser Fall bei jeder Periode dreimal eintritt.The most obvious thing would now be to connect the phases to the contacts of the tap changer in the order in which they are led out of the transformer. So in the sequence XY 1 TO 1 VW. However, as can be seen from the vector diagram in Fig. 2, with this sequence the voltage would initially only be increased at every second phase X 1 Y 1 Z and only then at the U 1 V 1 W in between. This shortens the time during which the rectifier draws current from these phases, and the anodes connected there can go out, especially at higher voltage levels. If, however, and this is what the invention consists of, the voltage on the individual phases is increased in the order in which it occurs when driving around the vector diagram, e.g. B. results in the sequence X 1 W 1 Y 1 U 1 Z 1 V, the voltage increase takes place in regular time segments. Only the time of the power supply is shortened each time in the last phase, which is of course much more favorable for the utilization and loading of the rectifier than if this case occurs three times in each period.

Der Erfindungsgedanke beschränkt sich nicht auf Sechsphasengleichrichter, sondern bezieht sich ganz allgemein auf Gleichrichteranlagen mit höherer Phasenzahl.The idea of the invention is not limited to six-phase rectifiers, but rather generally refers to rectifier systems with a higher number of phases.

Claims (1)

Patent-Anspruch:Patent claim: Spannungsregelung an sechs- und mehrphasigen Metalldampfgleichrichtern mit Stufenschaltung, bei der durch Verschieben des Nullpunktes der phasenzahlgleichen Sekundärwicklung eines Zusatztransformators die Spannung an einer Phase nach der andern geändert wird, dadurch gekennzeichnet, daß die einzelnen Phasen an der Kontaktbahn des Stufenschalters in der gleichen Reihenfolge nebeneinanderliegen, wie sie im Spannungsdiagramm zeitlich aufeinanderfolgen.Voltage regulation on six- and multi-phase metal vapor rectifiers with Step switching, in which the phase number is the same by shifting the zero point Secondary winding of an additional transformer the voltage on one phase after the other is changed, thereby characterized in that the individual phases on the contact track of the tap changer lie next to one another in the same order, as they follow one another in time in the voltage diagram.
DES60777D Voltage regulation on six-phase and multi-phase metal vapor rectifiers with step switching, in which the voltage of one phase after the other is changed by shifting the zero point of the in-phase secondary winding of an additional transformer Expired DE436530C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DES60777D DE436530C (en) Voltage regulation on six-phase and multi-phase metal vapor rectifiers with step switching, in which the voltage of one phase after the other is changed by shifting the zero point of the in-phase secondary winding of an additional transformer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES60777D DE436530C (en) Voltage regulation on six-phase and multi-phase metal vapor rectifiers with step switching, in which the voltage of one phase after the other is changed by shifting the zero point of the in-phase secondary winding of an additional transformer

Publications (1)

Publication Number Publication Date
DE436530C true DE436530C (en) 1926-11-04

Family

ID=7494365

Family Applications (1)

Application Number Title Priority Date Filing Date
DES60777D Expired DE436530C (en) Voltage regulation on six-phase and multi-phase metal vapor rectifiers with step switching, in which the voltage of one phase after the other is changed by shifting the zero point of the in-phase secondary winding of an additional transformer

Country Status (1)

Country Link
DE (1) DE436530C (en)

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