DE587573C - Metal vapor rectifier or the like with voltage dividers connected between the cathode and one anode each and used to feed the grids upstream of the anodes - Google Patents

Metal vapor rectifier or the like with voltage dividers connected between the cathode and one anode each and used to feed the grids upstream of the anodes

Info

Publication number
DE587573C
DE587573C DE1930587573D DE587573DD DE587573C DE 587573 C DE587573 C DE 587573C DE 1930587573 D DE1930587573 D DE 1930587573D DE 587573D D DE587573D D DE 587573DD DE 587573 C DE587573 C DE 587573C
Authority
DE
Germany
Prior art keywords
anode
cathode
metal vapor
anodes
feed
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
DE1930587573D
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.)
BBC Brown Boveri France SA
Original Assignee
BBC Brown Boveri France SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by BBC Brown Boveri France SA filed Critical BBC Brown Boveri France SA
Application granted granted Critical
Publication of DE587573C publication Critical patent/DE587573C/en
Expired legal-status Critical Current

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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Emergency Protection Circuit Devices (AREA)

Description

Metalldampfgleichrichter o. dgl. mit zwischen Kathode und je einer Anode geschalteten, zum Speisen der den Anoden vorgelagerten Gitter dienenden Spannungsteilern Um die Rückzündungssicherheit von Metalldampfgleichrichternund Met;alldampfsteuerapparaten zu erhöhen, werden in ihnen vor den Anoden je ein oder mehrere sogenannte Gitter angebracht, die mit einer mit der Spannung der zugehörigen Anode synchronen Wechselspannung gesteuert werden. Diese Spannung kann Widerstandsspannungsteilern entnommen werden, die zwischen jeder Anode und der Kathode liegen. Hierbei ist es unwesentlich, ob nur eineinziges Gitter oder mehrere Gitter jeder Anode vorgelagert und mit den Anzapfungen der Spannungsteiler stromleitend verbunden sind.Metal vapor rectifier or the like with between the cathode and one each Voltage dividers connected to the anode and used to feed the grid upstream of the anodes About the reignition safety of metal steam rectifiers and Met; all steam control devices to increase, one or more so-called grids are placed in them in front of the anodes attached, with an alternating voltage synchronous with the voltage of the associated anode being controlled. This voltage can be taken from resistor voltage dividers, which lie between each anode and the cathode. It is immaterial here whether only a single grid or several grids upstream of each anode and with the taps the voltage divider are connected to conduct electricity.

Ferner ist es bekanntlich zweckmäßig, den Gleichrichter ;gegen Überspannungen zu schützen und zu diesem Zweck überspannungsableiter zwischen -je eine Anode und die Kathode anzuschließen.It is also known to be useful to protect the rectifier against overvoltages to protect and for this purpose surge arrester between each anode and connect the cathode.

Die Erfindung besteht nun darin, daß die zwischen Kathode und je einer Anode liegenden Spannungsteilerwiderstände für die Gitterspeisung als überspannungsableiter und daher induktionsfrei ausgebildet sind. Auf diese Weise sind die beiden vorerwähnten Einrichtungen zu @ einer einzigen vereinigt, und ;gleichzeitig wird erreicht, daß die überspannungen sich gleichmäßig auf die einzelnen Dampfstrecken im Gleichrichter zwischen je einer Anode und der Kathode verteilen, d. h. daß Weder zwischen der Anode und einem Gitter noch zwischen einem solchen und der Kathode die volle Überspannung auftritt, wodurch die Wirksamkeit des überspannungsableiters erhöht wird.The invention now consists in that the lying between the cathode and the anode a voltage divider resistors for the grid power supply as surge suppressors, and thus formed are inductive. In this way the two devices mentioned above are combined into a single one, and at the same time it is achieved that the overvoltages are evenly distributed over the individual vapor paths in the rectifier between an anode and the cathode, i.e. neither between the anode and a grid nor the full overvoltage occurs between such and the cathode, whereby the effectiveness of the surge arrester is increased.

Es ist besonders vorteilhaft, die Spannungsteiler aus einem Material herzustellen, dessen Widerstand mit zunehmender Spannung stark abnimmt, wie es z. B. bei Siliciumcarbid der Fall ist. Dann ist während des normalen Betriebes, wenn der ZÄTiderstand nur die Aufgabe der Potentialunterteilung zu erfüllen hat, sein Ohmwert sehr hoch, wogegen bei auftretenden Überspannungen der Ohmwert stark herabsinkt, so daß die Überspannungen leicht abgeleitet werden. Die. Betriebssicherheit der Anlage wird auf diese Weise stark erhöht.It is particularly advantageous for the voltage divider to be made of one material produce, the resistance of which decreases sharply with increasing voltage, as z. B. is the case with silicon carbide. Then during normal operation, if the ZÄTiderstand only has to fulfill the task of dividing the potential Ohm value very high, whereas the Ohm value drops sharply when overvoltages occur, so that the overvoltages are easily diverted. The. Operational safety of the Plant is greatly increased in this way.

Claims (1)

PATENTANSPRÜCHE: i. Metalldampfgleichrichter o. dgl. mit zwischen Kathode und je einer Anode geschalteten, zum Speisen der den Anoden vorgelagerten Gitter dienenden Spannungsteilern, dadurch gekennzeichnet, daß die Spannungsteilerwiderstände als überspannungsableiter und daher induktionsfrei ausgebildet sind. a. Metalldampfgleichrichter o. dgl. nach Anspruch i, dadurch gekennzeichnet, daß die Spannungsteiler aus einem Material bestehen, dessen elektrischer Widerstand bei Spannungserhöhung sich erniedrigt.PATENT CLAIMS: i. Metal vapor rectifier or the like with between Cathode and one anode each connected to feed the upstream anodes Voltage dividers serving grid, characterized in that the voltage divider resistors are designed as surge arresters and therefore induction-free. a. Metal vapor rectifier o. The like. According to claim i, characterized in that the voltage dividers consist of one Material exist whose electrical resistance decreases when the voltage increases.
DE1930587573D 1930-10-25 1930-10-25 Metal vapor rectifier or the like with voltage dividers connected between the cathode and one anode each and used to feed the grids upstream of the anodes Expired DE587573C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE587573T 1930-10-25

Publications (1)

Publication Number Publication Date
DE587573C true DE587573C (en) 1933-11-04

Family

ID=6572228

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1930587573D Expired DE587573C (en) 1930-10-25 1930-10-25 Metal vapor rectifier or the like with voltage dividers connected between the cathode and one anode each and used to feed the grids upstream of the anodes

Country Status (1)

Country Link
DE (1) DE587573C (en)

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