DE902652C - Pole-changing three-phase machine - Google Patents

Pole-changing three-phase machine

Info

Publication number
DE902652C
DE902652C DEZ1006D DEZ0001006D DE902652C DE 902652 C DE902652 C DE 902652C DE Z1006 D DEZ1006 D DE Z1006D DE Z0001006 D DEZ0001006 D DE Z0001006D DE 902652 C DE902652 C DE 902652C
Authority
DE
Germany
Prior art keywords
pole
star
changing
phase
phase machine
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
DEZ1006D
Other languages
German (de)
Inventor
Adolf Zeller
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DEZ1006D priority Critical patent/DE902652C/en
Application granted granted Critical
Publication of DE902652C publication Critical patent/DE902652C/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K17/00—Asynchronous induction motors; Asynchronous induction generators
    • H02K17/02—Asynchronous induction motors
    • H02K17/12—Asynchronous induction motors for multi-phase current
    • H02K17/14—Asynchronous induction motors for multi-phase current having windings arranged for permitting pole-changing

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Motor And Converter Starters (AREA)

Description

Es sind bereits verschiedene Schaltungen polumschaltbarer Drehstrommaschinen bekannt. Diese haben jedoch den Nachteil, daß durch das gegebene Schaltungsverhältnis das aktive Eisen und Kupfer nicht bei allen Schaltungen voll ausgenutzt werden kann. Im vorliegenden Fall ist die niederpolige Betriebsschaltung eine gemischte Sterndreieckschaltung, bei der das Dreiecksystem parallel geschaltet ist, im Gegensatz zu bekannten Schaltungen, bei welchen die Reihenschaltung angewandt ist. Das Dreiecksystem enthält hierbei je Phase doppelt soviel Spulen in Reihe als das Sternsystem.There are already various circuits of pole-changing three-phase machines known. However, these have the disadvantage that the given gear ratio the active iron and copper cannot be fully utilized in all circuits. In the present case, the low-pole operating circuit is a mixed star-delta circuit, in which the triangle system is connected in parallel, in contrast to known circuits, in which the series connection is used. The triangle system contains here twice as many coils in series per phase as the star system.

Der genannte Nachteil wird bei dieser Schaltung nun erfindungsgemäß dadurch behoben, daß im Sternsystem in jeder Phase zusätzliche Windungen zum Ausgleich der Stromverteilung in Reihe geschaltet sind. Bei anderen Schaltungen der Maschine sind dagegen diese zusätzlichen Windungen stromlos. Es wird dadurch auch erreicht, daß die höherpolige Betriebsschaltung im Stern mit abgeschalteten Ausgleichwicklungen ein besonders gutes Drehmoment erhält. Die Ausgleichwicklung wird vorteilhaft auf alle Nuten der Maschine gleichmäßig verteilt. In der Zeichnung ist die niederpolige Betriebsschaltung als gemischte Schaltung mit der erfindungsgemäßen Zusatzwicklung im Sternsystem ersichtlich gemacht.The disadvantage mentioned is now in accordance with the invention in this circuit corrected by the fact that in the star system in each phase additional windings to compensate the power distribution are connected in series. With other circuits of the machine on the other hand, these additional turns are de-energized. It is thereby also achieved that the higher-pole operating circuit in the star with switched off equalizing windings receives a particularly good torque. The equalizing winding is beneficial all grooves of the machine evenly distributed. In the drawing is the low pole Operating circuit as a mixed circuit with the additional winding according to the invention made evident in the star system.

Claims (1)

PATENTANSPRUCH: Polumschaltbare Drehstrommäschine mit gemischter Sterndreieckschaltung im Betrieb, bei der das Dreiecksystem und das Sternsystem parallel geschaltet sind und das Dreiecksystem je Phase doppelt soviel Spulen in Reihe enthält als das Sternsystem, dadurch gekennzeichnet, daß mit den .Spulen des Sternsystems zur Vergleichmäßigung der Stromverteilung in bei-den Systemen in jeder Phase zusätzliche Windungen in Reihe geschaltet sind, .die bei anderen Schaltungen der Maschine stromlos sind.PATENT CLAIM: Pole-changing three-phase machine with mixed star-delta connection in operation in which the delta system and the star system are connected in parallel and the triangle system contains twice as many coils in series per phase than the star system, characterized in that with the .Spulen of the star system for equalization the power distribution in both systems in each phase additional turns in Are connected in series, .that are de-energized in other circuits of the machine.
DEZ1006D 1940-08-10 1940-08-10 Pole-changing three-phase machine Expired DE902652C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEZ1006D DE902652C (en) 1940-08-10 1940-08-10 Pole-changing three-phase machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEZ1006D DE902652C (en) 1940-08-10 1940-08-10 Pole-changing three-phase machine

Publications (1)

Publication Number Publication Date
DE902652C true DE902652C (en) 1954-01-25

Family

ID=7617945

Family Applications (1)

Application Number Title Priority Date Filing Date
DEZ1006D Expired DE902652C (en) 1940-08-10 1940-08-10 Pole-changing three-phase machine

Country Status (1)

Country Link
DE (1) DE902652C (en)

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