CH344131A - Capacitive voltage converter with connection option for high-frequency signal transmission - Google Patents

Capacitive voltage converter with connection option for high-frequency signal transmission

Info

Publication number
CH344131A
CH344131A CH344131DA CH344131A CH 344131 A CH344131 A CH 344131A CH 344131D A CH344131D A CH 344131DA CH 344131 A CH344131 A CH 344131A
Authority
CH
Switzerland
Prior art keywords
capacitive voltage
voltage converter
signal transmission
frequency signal
terminals
Prior art date
Application number
Other languages
German (de)
Inventor
Rudolf Dipl Ing Bauer
Original Assignee
Siemens Ag
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 Siemens Ag filed Critical Siemens Ag
Publication of CH344131A publication Critical patent/CH344131A/en

Links

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
    • H02M5/00Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
    • H02M5/02Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc
    • H02M5/04Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters
    • H02M5/06Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using impedances
    • H02M5/08Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using impedances using capacitors only

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Filters And Equalizers (AREA)

Description

  

      Kapazitiver        Spannungswandler    mit     Anschlussmöglichkeit    für hochfrequente Signalübertragung    Gegenstand der Erfindung ist ein     kapazitiver     Spannungswandler mit     Anschlussmöglichkeit    für  hochfrequente Signalübertragung. Erfindungsgemäss  sind die zum Anschluss für die     Hochfrequenzsignal-          übertragung    vorgesehenen Klemmen im Stromkreis  seines     kapazitiven    Spannungsteilers mittels eines mit  der Frequenz mehr als linear wachsenden Schein  widerstandes überbrückt.

   Beispielsweise kann die       überbrückung    mittels eines die Arbeitsfrequenz gege  benenfalls einschliesslich der erwünschten Oberwel  len des     kapazitiven        Spannungswandlers    durchlassen  den Tief- oder Bandpasses oder eines auf die Arbeits  frequenz des     kapazitiven    Spannungswandlers abge  stimmten     Reihenresonanzkreises    erfolgen.  



  Infolge dieser erfindungsgemässen Ausbildung  kann der     kapazitive        Spannungsteiler    des     Wandlers     gleichzeitig als Koppelkondensator für den Anschluss  der hochfrequenten Signalübertragung benutzt wer  den, ohne dass der     kapazitive    Spannungswandler  einerseits durch das Anschliessen der hochfrequenten  Signalübertragung hinsichtlich seiner     Messgenauigkeit     unzulässig beeinflusst wird und anderseits einen un  erwünscht grossen Anteil der     Hochfrequenzenergie     aufnimmt. Man kann den genannten Scheinwider  stand entweder von aussen zugänglich mit den Klem  men verbinden oder gegen äussere Eingriffe unzu  gänglich an die Klemmen anschliessen.

   Im letzten Fall  ist die Möglichkeit gegeben, den     kapazitiven        Span-          nungswandler    gegen unbefugte, die     Messgenauigkeit     beeinträchtigende Eingriffe zu schützen, indem alle  Teile, bei denen solche Beeinflussungsmöglichkeit be  steht, plombiert werden können; es bleiben dann nur  die Klemmen für den Anschluss der Hochfrequenz  signalübertragung von aussen frei zugänglich.  



  Zur Erläuterung der Erfindung ist in der Zeich  nung in schematischer Darstellung ein Ausführungs  beispiel des     kapazitiven    Spannungswandlers wieder-    gegeben, der aus dem     kapazitiven        Spannungsteiler        Sp     mit den aus     Kondensatorelementen    aufgebauten Teil  kapazitäten     C1    und     C2    und einem an die Teilkapa  zität     C2    angeschlossenen     Spannungszweig    besteht,  welcher sich in bekannter Weise aus den Drosseln       Drl,        Dr2    und dem Zwischenwandler<I>W</I> zusammen  setzt.

   An den Klemmen A1 und     A2    im Stromkreis des       kapazitiven        Spannungsteilers        Sp    kann die     Ankopplung     der zur     Hochfrequenzsignalübertragung    dienenden  Bauelemente<I>HF</I> erfolgen. Die     Klemmen        A1    und     A2     sind durch den mit der Frequenz mehr als     linear     wachsenden Scheinwiderstand     Wif    überbrückt.

   Dieser  Scheinwiderstand kann zum Beispiel aus einem die  Arbeitsfrequenz - gegebenenfalls einschliesslich der  erwünschten Oberwellen des     kapazitiven        Spannungs-          wandlers    - durchlassenden Tief- oder     Bandpass    oder  einem auf die     Arbeitsfrequenz    des     kapazitiven        Span-          nungswandlers    abgestimmten     Reihenresonanzkreis     bestehen.

   Sofern man diesen Scheinwiderstand gegen  äussere     Eingriffe    unzugänglich mit den Klemmen     A1     und     A2    verbindet, kann man diesen Scheinwider  stand in den     plombierbaren    Teil des     kapazitiven        Span-          nungswandlers    mit einbeziehen, so dass nur die Klem  men A 1 und A 2 zum Anschluss .der Bauelemente<I>HF</I>  von aussen frei zugänglich bleiben, ohne dass die Ge  fahr unbefugter, die     Messgenauigkeit    beeinträchtigen  der Eingriffe besteht.

   Der Scheinwiderstand     Wig    ist  so bemessen, dass die     Hochfrequenzsignalübertragung     mit     geringstmöglichem    Energieverlust für die     HF-          Leistung    erfolgen kann und die zugelassene Genauig  keitsgrenze des     kapazitiven    Spannungswandlers bei  angeschlossener und nicht angeschlossener     Hochfre-          quenzsignalübertragung    nicht überschritten wird.



      Capacitive voltage converter with connection option for high-frequency signal transmission The object of the invention is a capacitive voltage converter with connection option for high-frequency signal transmission. According to the invention, the terminals provided for the connection for high-frequency signal transmission in the circuit of its capacitive voltage divider are bridged by means of an apparent resistance that increases more than linearly with the frequency.

   For example, the bridging can take place by means of a working frequency, if necessary including the desired Oberwel len of the capacitive voltage converter, the low-pass or bandpass filter or a series resonant circuit tuned to the working frequency of the capacitive voltage converter.



  As a result of this design according to the invention, the capacitive voltage divider of the converter can simultaneously be used as a coupling capacitor for connecting the high-frequency signal transmission, without the capacitive voltage converter being inadmissibly influenced by the connection of the high-frequency signal transmission in terms of its measurement accuracy and, on the other hand, an undesirably large proportion of the high-frequency energy records. The said apparent resistance can either be connected to the terminals accessible from the outside or connected to the terminals inaccessible to prevent outside interference.

   In the latter case, it is possible to protect the capacitive voltage transformer against unauthorized interventions that impair the measurement accuracy by sealing all parts where there is such a possibility of influencing; only the terminals for connecting the high-frequency signal transmission then remain freely accessible from the outside.



  To explain the invention, an embodiment example of the capacitive voltage converter is shown in the drawing in a schematic representation, which consists of the capacitive voltage divider Sp with the partial capacities C1 and C2 made up of capacitor elements and a voltage branch connected to the partial capacitance C2, which is composed in a known manner of the chokes Drl, Dr2 and the intermediate converter <I> W </I>.

   The components <I> HF </I> used for high-frequency signal transmission can be coupled to terminals A1 and A2 in the circuit of the capacitive voltage divider Sp. Terminals A1 and A2 are bridged by the impedance Wif, which increases more than linearly with the frequency.

   This impedance can, for example, consist of a low-pass or band-pass filter that allows the working frequency - possibly including the desired harmonics of the capacitive voltage converter - or a series resonance circuit tuned to the working frequency of the capacitive voltage converter.

   If this impedance is connected to terminals A1 and A2 inaccessible to external interference, this impedance can be included in the sealable part of the capacitive voltage converter, so that only terminals A 1 and A 2 are used to connect the components I> HF </I> remain freely accessible from the outside without the risk of unauthorized interventions affecting the measurement accuracy.

   The impedance TIG is dimensioned in such a way that the high-frequency signal transmission can take place with the lowest possible energy loss for the HF power and the permitted accuracy limit of the capacitive voltage converter is not exceeded with connected and disconnected high-frequency signal transmission.

 

Claims (1)

PATENTANSPRUCH Kapazitiver Spannungswandler mit Anschluss- möglichkeit für hochfrequente Signalübertragung, da- durch gekennzeichnet, dass die zum Anschluss für die Hochfrequenzsignalübertragung dienenden Klemmen im Stromkreis seines kapazitiven Spannungsteilers mit tels eines mit der Frequenz mehr als linear wach senden Scheinwiderstandes überbrückt sind. UNTERANSPRÜCHE 1. PATENT CLAIM Capacitive voltage converter with connection option for high-frequency signal transmission, characterized in that the terminals in the circuit of its capacitive voltage divider used for connection for high-frequency signal transmission are bridged by means of an impedance that increases more than linearly with the frequency. SUBCLAIMS 1. Kapazitiver Spannungswandler nach Patent anspruch, dadurch gekennzeichnet, dass die Klemmen mittels eines die Arbeitsfrequenz des kapazitiven Spannungswandlers durchlassenden Tiefpasses über brückt sind. 2. Kapazitiver Spannungswandler nach Patent anspruch, dadurch gekennzeichnet, dass die Klemmen mittels eines die Arbeitsfrequenz des kapazitiven Spannungswandlers durchlassenden Bandpasses über brückt sind. Capacitive voltage converter according to patent claim, characterized in that the terminals are bridged by means of a low-pass filter which allows the capacitive voltage converter to pass through. 2. Capacitive voltage converter according to patent claim, characterized in that the terminals are bridged by means of a band pass which allows the operating frequency of the capacitive voltage converter. 3. Kapazitiver Spannungswandler nach Patent anspruch, dadurch gekennzeichnet, dass die Klemmen mittels eines auf die Arbeitsfrequenz des kapazitiven Spannungswandlers abgestimmten Reihenresonanz kreises überbrückt sind. 4. Kapazitiver Spannungswandler nach Patent anspruch, dadurch gekennzeichnet, dass der Schein widerstand gegen äussere Eingriffe unzugänglich mit den Klemmen verbunden ist. 3. Capacitive voltage converter according to patent claim, characterized in that the terminals are bridged by means of a series resonance circuit tuned to the operating frequency of the capacitive voltage converter. 4. Capacitive voltage converter according to patent claim, characterized in that the apparent resistance to external interference is inaccessible to the terminals.
CH344131D 1955-08-31 1956-08-29 Capacitive voltage converter with connection option for high-frequency signal transmission CH344131A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE344131X 1955-08-31

Publications (1)

Publication Number Publication Date
CH344131A true CH344131A (en) 1960-01-31

Family

ID=6250097

Family Applications (1)

Application Number Title Priority Date Filing Date
CH344131D CH344131A (en) 1955-08-31 1956-08-29 Capacitive voltage converter with connection option for high-frequency signal transmission

Country Status (1)

Country Link
CH (1) CH344131A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3210592A1 (en) * 1981-03-30 1982-10-14 Alsthom-Atlantique, 75784 Paris POWER SUPPLY FOR A HIGH ELECTRICAL POTENTIAL ELECTRONIC DEVICE

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3210592A1 (en) * 1981-03-30 1982-10-14 Alsthom-Atlantique, 75784 Paris POWER SUPPLY FOR A HIGH ELECTRICAL POTENTIAL ELECTRONIC DEVICE

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