AT86914B - Circuit arrangement for reducing the stress on insulation in electrical machines, in particular high-frequency machines. - Google Patents

Circuit arrangement for reducing the stress on insulation in electrical machines, in particular high-frequency machines.

Info

Publication number
AT86914B
AT86914B AT86914DA AT86914B AT 86914 B AT86914 B AT 86914B AT 86914D A AT86914D A AT 86914DA AT 86914 B AT86914 B AT 86914B
Authority
AT
Austria
Prior art keywords
machines
reducing
insulation
stress
circuit arrangement
Prior art date
Application number
Other languages
German (de)
Original Assignee
Lorenz C 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 Lorenz C Ag filed Critical Lorenz C Ag
Application granted granted Critical
Publication of AT86914B publication Critical patent/AT86914B/en

Links

Description

  

   <Desc/Clms Page number 1> 
 



  Schaltungsanordnung zur Verminderung der Isolationsbeanspruehung bei elektrischen Maschinen, insbesondere   Hoehfrequenzmaschinen.   



   Bekanntlich bestehen für die Wicklungen von Hochfrequenzmaschinen besondere Schwierigkeiten, da man zwecks Verminderung der Stromstärke mit möglichst hohen Spannungen arbeiten muss. Selbst wenn man der Maschine räumlich grosse Abmessungen gibt, so wächst der Isolationsraum für die Nuten nicht mehr, da er durch die Umfangsgeschwindigkeit der Maschine'begrenzt ist. Andrerseits kann man, um möglichst niedrige Spannungen zu haben, die Nachteile hoher Stromstärken durch Parallelschaltung einzelner Statorwicklungsteile herabdrücken ; jedoch ist die hohe Stromstärke nachteilig für die Dimensionierung des primären Resonanzkreises, da Kondensatoren sehr grosser Kapazität erforderlich sind.

   Ausserdem ist eine wiederholte Parallelschaltung der Wicklungen infolge der starren Verbindung und der Unsymmetrie der einzelnen Kreise nicht erwünscht, da sich Ausgleichströme in der Maschine selbst bilden können. 



   Diese Nachteile lassen sich nach dem Gegenstand der Erfindung dadurch beseitigen, dass die Wicklung der Maschine unterteilt und die einzelnen Teile an Einzelwicklungen eines Transformators angeschlossen sind, dessen sekundärer Teil aus einer für hohe Spannungen ausgeführten Wicklung besteht. Die Sekundärwicklung des Transformators wird alsdann zum Nutzstromkreis geführt oder liegt, sofern die Maschine für die Zwecke der drahtlosen 
 EMI1.1 
 den Primärkreis   geschützt,   wobei der Transformator selbstverständlich ohne weiteres gut isoliert'ausgeführt werden kann. 



   In der Zeichnung ist ein Ausführungsbeispiel der Schaltung dargestellt. Die Wicklung der Dynamomaschine d ist unterteilt und mit ihren einzelnen Teilen an Einzelwicklungen des Transformators   t   geführt, dessen   Sekundärwicklung   über die Kondensatoren c zu den Primärspulen von    Frequenztransformatoren/ und/'s   geführt sind. Die Sekundärwicklungen dieser Transformatoren liegen in bekannter Weise in der Antenne a. 

**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.



   <Desc / Clms Page number 1>
 



  Circuit arrangement for reducing the stress on insulation in electrical machines, especially high-frequency machines.



   As is known, there are particular difficulties for the windings of high-frequency machines, since one has to work with the highest possible voltages in order to reduce the current intensity. Even if the machine is given large spatial dimensions, the isolation space for the grooves no longer increases, since it is limited by the peripheral speed of the machine. On the other hand, in order to have the lowest possible voltages, the disadvantages of high currents can be reduced by connecting individual stator winding parts in parallel; however, the high current is disadvantageous for the dimensioning of the primary resonance circuit, since capacitors with a very large capacity are required.

   In addition, a repeated parallel connection of the windings is not desirable due to the rigid connection and the asymmetry of the individual circuits, since equalizing currents can form in the machine itself.



   These disadvantages can be eliminated according to the subject matter of the invention in that the winding of the machine is divided and the individual parts are connected to individual windings of a transformer, the secondary part of which consists of a winding designed for high voltages. The secondary winding of the transformer is then led to the utility circuit or is provided, provided the machine is for wireless purposes
 EMI1.1
 the primary circuit is protected, whereby the transformer can of course be easily insulated.



   An exemplary embodiment of the circuit is shown in the drawing. The winding of the dynamo d is divided and its individual parts are routed to individual windings of the transformer t, the secondary windings of which are routed via the capacitors c to the primary coils of frequency transformers / and / 's. The secondary windings of these transformers are in the known manner in the antenna a.

** WARNING ** End of DESC field may overlap beginning of CLMS **.

 

Claims (1)

PATENT-ANSPRUCH : Schaltungsanordnung zur Verminderung der Isolationsbeanspruchung bei elektrischen Maschinen, dadurch gekennzeichnet, dass die Wicklung der Maschine unterteilt und zu Einzelwicklungen eines Transformators geführt ist, dessen Sekundärwicklung an den Nutzstromkreis angeschlossen ist. **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. PATENT CLAIM: Circuit arrangement for reducing the insulation stress in electrical machines, characterized in that the winding of the machine is subdivided and led to individual windings of a transformer whose secondary winding is connected to the utility circuit. ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT86914D 1916-11-09 1919-06-03 Circuit arrangement for reducing the stress on insulation in electrical machines, in particular high-frequency machines. AT86914B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE86914X 1916-11-09

Publications (1)

Publication Number Publication Date
AT86914B true AT86914B (en) 1922-01-10

Family

ID=5641492

Family Applications (1)

Application Number Title Priority Date Filing Date
AT86914D AT86914B (en) 1916-11-09 1919-06-03 Circuit arrangement for reducing the stress on insulation in electrical machines, in particular high-frequency machines.

Country Status (1)

Country Link
AT (1) AT86914B (en)

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