AT52487B - Switching of adjustable induction motors. - Google Patents

Switching of adjustable induction motors.

Info

Publication number
AT52487B
AT52487B AT52487DA AT52487B AT 52487 B AT52487 B AT 52487B AT 52487D A AT52487D A AT 52487DA AT 52487 B AT52487 B AT 52487B
Authority
AT
Austria
Prior art keywords
switching
induction motors
adjustable induction
rotor
revolutions
Prior art date
Application number
Other languages
German (de)
Original Assignee
Siemens Schuckertwerke Wien
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 Schuckertwerke Wien filed Critical Siemens Schuckertwerke Wien
Application granted granted Critical
Publication of AT52487B publication Critical patent/AT52487B/en

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  • Control Of Ac Motors In General (AREA)
  • Control Of Multiple Motors (AREA)

Description

  

   <Desc/Clms Page number 1> 
 



  Schaltung von regelbaren Induktionsmotoren. 



   Die Tourenzahl von Induktionsmotoren kann bekanntlich durch Einschalten von   Hilfsmaschincn, heispielsweisc Kollektormotoren, Frequenzwandlern, Mehr- bzw. Einphasen-     strom-Gleichstromumformern,   in den Rotorstromkreis geregelt werden. Die Grösse dieser Hilfsmaschinen ist bestimmt durch den dem normalen Drehmomente des Induktionsmotors entsprechenden Strom und die durch die Grenze der Regulierung gegebene   Rotorspannung.   Für den Antrieb solcher Maschinen nun, deren Drehmoment sich mit der Tourenzahl ändert, beispielsweise Ventilatoren,   Zentrifugalpumpen   usw., kann man eine Verbilligung der   Ililfs-   maschinen durch die Möglichkeit, mit kleineren Typen auszukommen, in der Weise erzielen, dass man bei   k ! einer Tourenzahl,

     also auch   kleinem   Drehmomente und kleinem Strome, die Rotorwicklung des Induktionsmotors gruppenweise parallel schaltet und dadurch die Spannung an den Schleifringen erniedrigt, bei höherer Tourenzahl. also   grossem   Dreh-   momente   und grossem Strome, die Parallelschaltung aufhebt und dadurch die Schleifring-   Spannung, weiche   bei kleinem Schlupfe sehr niedrig sein würde, erhöht. Gegenüber der bekannten Stern-Dreieck-Umschaltung im Rotor hat die   obbeschriebene   Schaltung den Vorteil. dass man durch verschiedene Gruppenteilung die zu wählende Spannung in weiteren Grenzen ändern kann. 
 EMI1.1 
 

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



   <Desc / Clms Page number 1>
 



  Switching of adjustable induction motors.



   As is known, the number of revolutions of induction motors can be regulated by switching on auxiliary machines, for example collector motors, frequency converters, multi-phase or single-phase current converters, in the rotor circuit. The size of these auxiliary machines is determined by the current corresponding to the normal torque of the induction motor and the rotor voltage given by the limit of the regulation. For the drive of such machines, the torque of which changes with the number of revolutions, for example fans, centrifugal pumps, etc., one can achieve cheaper auxiliary machines by being able to get by with smaller types in such a way that k! a number of revolutions,

     So also with low torques and low currents, the rotor winding of the induction motor switches in parallel in groups and thereby lowers the voltage on the slip rings, at higher speeds. that is, high torques and high currents, which cancel the parallel connection and thereby increase the slip ring voltage, which would be very low with a small slip. The above-described circuit has the advantage over the known star-delta switching in the rotor. that you can change the voltage to be selected within wider limits by dividing different groups.
 EMI1.1
 

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

 

Claims (1)

Schaltung von Induktionsmotoren, welche durch Einschalten \'on Hilfsmaschinen in den Rotorstromkreis geregelt werden, dadurch gekennzeichnet, dass die Rotorwicklung bei niedrigen Tourenzahlen gruppenweise parallel. bei hohen Tourenzahlen wieder hintereinander geschaltet wird. **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. Switching of induction motors, which are regulated by switching on auxiliary machines in the rotor circuit, characterized in that the rotor winding is parallel in groups at low speeds. is switched back in series at high number of revolutions. ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT52487D 1910-06-25 1910-06-25 Switching of adjustable induction motors. AT52487B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT52487T 1910-06-25

Publications (1)

Publication Number Publication Date
AT52487B true AT52487B (en) 1912-03-11

Family

ID=3573625

Family Applications (1)

Application Number Title Priority Date Filing Date
AT52487D AT52487B (en) 1910-06-25 1910-06-25 Switching of adjustable induction motors.

Country Status (1)

Country Link
AT (1) AT52487B (en)

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