AT65789B - Starting device for machine groups connected in cascade. - Google Patents

Starting device for machine groups connected in cascade.

Info

Publication number
AT65789B
AT65789B AT65789DA AT65789B AT 65789 B AT65789 B AT 65789B AT 65789D A AT65789D A AT 65789DA AT 65789 B AT65789 B AT 65789B
Authority
AT
Austria
Prior art keywords
starting device
cascade
phase
machine groups
groups connected
Prior art date
Application number
Other languages
German (de)
Original Assignee
Acec
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 Acec filed Critical Acec
Application granted granted Critical
Publication of AT65789B publication Critical patent/AT65789B/en

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K47/00—Dynamo-electric converters
    • H02K47/02—AC/DC converters or vice versa
    • H02K47/06—Cascade converters
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J39/00—Heat-insulated warming chambers; Cupboards with heating arrangements for warming kitchen utensils

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Power Engineering (AREA)
  • Motor And Converter Starters (AREA)
  • Control Of Eletrric Generators (AREA)

Description

  

   <Desc/Clms Page number 1> 
 



    Anlasseinrichtung von In Kaskaden geschalteten Maschinengruppen.   



   Das im Patente   Nr.   60318 beschriebene Anlassen von in Kaskaden geschalteten Maschinengruppen oder Umformern beruht auf der Eigenschaft der Maschinen mit mehr-   phaaigem   Stator und einphasigem Rotor bei der halben Rotationsgeschwindigkeit des Primärfeldes eine zweite, stabile Synchrongeschwindigkeit zu haben. Es ist bekannt, dass solche Maschinen vom Stillstand bis zur halben Geschwindigkeit des Drehfeldes als Motor, von dort bis zu zwei Drittel dieser Geschwindigkeit als Generator und darüber hinaus wieder als Motor arbeiten. 



   Wesentlich ist, dass diese Eigenschaft sich nor dann klar zeigt, wenn der Ohmsche Widerstand der Einphasenwicklung zu vernachlässigen ist. Schaltet man nämlich in den einphasigen Rotor einen zu grossen Widerstand ein, so hebt man die Eigenschaft des Funktionieren der Maschine als Generator auf, desgleichen auch die Stabilität des Laufes bei der halben Synchrongeschwindigkeit : diese Wirkung tritt al) er nicht ein, wenn man an Stelle dieses Widerstandes einphasige Reaktanz setzt. 



   Die Erfindung besteht nun dann, bei der   Anlasseinrichtung   nach Patent Nr. 60318 in den   einphasigen   Rotor, d.   11.   zwischen zwei der Ringe, welche an die Wicklungen des Rotors angeschlossen sind, statt eines einphasigen Widerstandes   Aine einphasige   Reaktanz einzuschalten ; in diesem Falle   bietet   die Gruppe oder die Maschine die oberwähnten Eigenschaften dar, da durch die wattlosen Komponenten keine Änderungen in der Verschiebung der Felder hervorgerufen werden. 
 EMI1.1 
   I.   Anlasseinrichtung nach   Patent Nr.   60318, dadurch gekennzeichnet, dass im sekundären Stromkreis eine Einphasen-Drosselspule mit sehr geringem Ohmschen Widerstand eingeschaltet ist. 

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



   <Desc / Clms Page number 1>
 



    Starting equipment for machine groups connected in cascade.



   The starting of cascaded machine groups or converters described in patent no. 60318 is based on the property of machines with a multi-phase stator and single-phase rotor to have a second, stable synchronous speed at half the rotational speed of the primary field. It is known that such machines work from standstill to half the speed of the rotating field as a motor, from there up to two thirds of this speed as a generator and beyond that again as a motor.



   It is essential that this property is clearly evident when the ohmic resistance of the single-phase winding is negligible. If one switches on too great a resistance in the single-phase rotor, one cancels out the property of functioning of the machine as a generator, likewise the stability of the run at half the synchronous speed: this effect does not take place if one takes it this resistance sets single-phase reactance.



   The invention consists in the starting device according to patent no. 60318 in the single-phase rotor, i. 11. between two of the rings which are connected to the windings of the rotor, instead of a single-phase resistor, a single-phase reactance is switched on; in this case the group or the machine offers the properties mentioned above, since the wattless components do not cause any changes in the displacement of the fields.
 EMI1.1
   I. Starting device according to patent no. 60318, characterized in that a single-phase choke coil with a very low ohmic resistance is switched on in the secondary circuit.

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

Claims (1)

2. Anlasseinrichtung nach Anspruch 1, dadurch gekennzeichnet, dass im sekundären Stromkreis ein besonderer Anlasser-eingeschaltet ist, der aus einem mehrphasigen Widerstand und einer Einphasen-Drosselspule mit oder ohne Ohmschen Widerstand oder anderer analoger Einrichtung besteht, wobei der Mehrphasenwiderstand zum Anlassen der Gruppe und die Einphasen-Impedanz dazu dient, sie auf den Normalsynchronismus zu bringen. **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. 2. Starting device according to claim 1, characterized in that a special starter is switched on in the secondary circuit, which consists of a polyphase resistor and a single-phase inductor with or without an ohmic resistance or other analog device, the polyphase resistor for starting the group and the single-phase impedance is used to bring them to normal synchronism. ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT65789D 1912-02-28 1913-03-06 Starting device for machine groups connected in cascade. AT65789B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE1695X 1912-02-28

Publications (1)

Publication Number Publication Date
AT65789B true AT65789B (en) 1914-07-25

Family

ID=92544249

Family Applications (2)

Application Number Title Priority Date Filing Date
AT60318D AT60318B (en) 1912-02-28 1912-06-03 Starting device for machine groups connected in cascade.
AT65789D AT65789B (en) 1912-02-28 1913-03-06 Starting device for machine groups connected in cascade.

Family Applications Before (1)

Application Number Title Priority Date Filing Date
AT60318D AT60318B (en) 1912-02-28 1912-06-03 Starting device for machine groups connected in cascade.

Country Status (2)

Country Link
AT (2) AT60318B (en)
NL (1) NL1695C (en)

Also Published As

Publication number Publication date
NL1695C (en) 1917-01-02
AT60318B (en) 1913-07-25

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