DE558173C - Arrangement to reduce the leakage on three-phase series motors - Google Patents

Arrangement to reduce the leakage on three-phase series motors

Info

Publication number
DE558173C
DE558173C DENDAT558173D DE558173DD DE558173C DE 558173 C DE558173 C DE 558173C DE NDAT558173 D DENDAT558173 D DE NDAT558173D DE 558173D D DE558173D D DE 558173DD DE 558173 C DE558173 C DE 558173C
Authority
DE
Germany
Prior art keywords
phase series
arrangement
reduce
leakage
series motors
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
DENDAT558173D
Other languages
German (de)
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.)
Siemens Schuckertwerke AG
Siemens AG
Original Assignee
Siemens Schuckertwerke AG
Siemens AG
Publication date
Application granted granted Critical
Publication of DE558173C publication Critical patent/DE558173C/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K27/00—AC commutator motors or generators having mechanical commutator
    • H02K27/12—AC commutator motors or generators having mechanical commutator having multi-phase operation
    • H02K27/14—AC commutator motors or generators having mechanical commutator having multi-phase operation in series connection

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Description

Die Theorie und die Erfahrung zeigen, daß bei Drehstromreihenschlußmotoren die induktiven Streuspannungen einen großen Einfluß auf die verschiedenen Betriebseigenschaften des Motors haben. Dieser Einfluß wirkt sich durchwegs verschlechternd aus. Einerseits wird das Anfahrmoment, der Leistungsfaktor und der Wirkungsgrad des Motors verschlechtert, anderseits wird die Labilität der unteren Motordrehzahlen erhöht. Die große Streuung des Motors, die hauptsächlich auf einen kleinen Kraftfluß pro Pol zurückzuführen ist, ist durch die Rücksichtnahme auf die Kommutierung bedingt. Ein großer Kraftfluß pro Pol würde die für die Kommutierung besonders gefährliche Transformätorspannung in unzulässiger Weise erhöhen.Theory and experience show that in three-phase series motors the inductive Stray voltages have a great influence on the various operating properties of the engine. This influence has a worsening effect throughout. On the one hand the starting torque, the power factor and the efficiency of the motor are impaired, on the other hand, the instability of the lower engine speeds is increased. The large dispersion of the engine, mainly due to a small flow of force per pole is due to the consideration of the commutation is conditional. A large power flow per pole would be necessary for the commutation Increase particularly dangerous transformer voltage in an impermissible manner.

Gemäß der vorliegenden Erfindung wird der verschlechternde Einfluß der großen Streuung von Drehstromreihenschlußmotoren auf die verschiedenen Betriebseigenschaften dadurch behoben, daß in den Motorstromkreis eine negative Streuung eingeführt ist, indem erfindungsgemäß an den Zwischentransformator des Drehstromreihenschlußmotors bereits vorhandene oder zusätzliche Wicklungen (Tertiärwicklungen) mit ihrer Spannung an Kondensatoren angeschlossen sind. Die Kondensatoren sind derart bemessen, daß sie die induktiven Streuspannungen durch entsprechende Gegenspannungen ganz oder teiljveise aufheben. Der Anschluß der Kondensatoren an vorhandene oder zusätzliche Wicklungen des Zwischentransformators hat den Vorteil, daß man die Kondensatoren mit einer möglichst hohen Spannung speisen kann, so daß sie klein und billig ausfallen. Es entstehen dabei auch keine oder nur geringe zusätzliche Kosten, nachdem der Zwischentransformator für den Reihenschlußmotor bereits vorhanden ist.According to the present invention, the deteriorating influence becomes large Scatter of three-phase series motors on the various operating characteristics corrected by introducing a negative leakage into the motor circuit by according to the invention to the intermediate transformer of the three-phase series motor already existing or additional windings (tertiary windings) with their voltage Capacitors are connected. The capacitors are sized so that they inductive stray voltages due to corresponding counter voltages wholly or partially lift. The connection of the capacitors to existing or additional windings the intermediate transformer has the advantage that the capacitors can be fed with the highest possible voltage, so that they are small and cheap. There are also little or no additional ones Cost after the intermediate transformer for the series motor already is available.

Die Zeichnung veranschaulicht die Erfindung an einem Beispiel. Die Ständerwicklung ι eines Drehstromreihenschlußmotors ist über den Zwischentransformator 2 mit der Läuferwicklung verbunden. Der Zwischentransformator besitzt noch eine in Stern geschaltete Tertiärwicklung 3, die über in Dreieck geschaltete Kondensatoren 4 geschlossen ist. Die Anordnung der Tertiärwicklung hat noch den Vorteil, daß man mit der Spannung von den am Zwischentransformator mit Rücksicht auf den Motor gewählten Spannungen vollständig unabhängig ist und die Spannung nur mit Rücksicht auf die Kondensatoren bemessen kann.The drawing illustrates the invention using an example. The stator winding ι a three-phase series motor is via the intermediate transformer 2 with the Rotor winding connected. The intermediate transformer also has a star-connected one Tertiary winding 3, which is closed by capacitors 4 connected in a delta. The arrangement of the tertiary winding has nor the advantage of being careful with the voltage from the intermediate transformer The voltage selected on the motor is completely independent and the voltage is only dimensioned with regard to the capacitors can.

Claims (1)

Patentanspruch:Claim: Anordnung zur Verminderung der Streuung an Drehstromreihenschlußmotoren, bei der Ständer- und Läuferwicklung über einen Zwischentransformator miteinander gekoppelt sind, dadurch gekennzeichnet, daß an diesem Zwischentransformator zusätzliche, an Kondensatoren angeschlossene Wicklungen angeordnet sind.Arrangement to reduce the scatter on three-phase series motors, in the case of the stator and rotor windings via an intermediate transformer are coupled, characterized in that this intermediate transformer additional windings connected to capacitors are arranged. *7 Von dem Patentsucher ist als der Erfinder angegeben worden: * 7 The following has been indicated by the patent seeker as the inventor: Dipl.-Ing. Jaroslav Kosisek in Berlin-Charlottenburg.Dipl.-Ing. Jaroslav Kosisek in Berlin-Charlottenburg. Hierzu 1 Blatt Zeichnungen1 sheet of drawings BERLIN. GEDRUCKT IN DER REICHSDHUCKEREIBERLIN. PRINTED IN THE REICHSDUCKEREI
DENDAT558173D Arrangement to reduce the leakage on three-phase series motors Expired DE558173C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE558173T

Publications (1)

Publication Number Publication Date
DE558173C true DE558173C (en) 1932-09-02

Family

ID=6565289

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT558173D Expired DE558173C (en) Arrangement to reduce the leakage on three-phase series motors

Country Status (1)

Country Link
DE (1) DE558173C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE760944C (en) * 1939-12-09 1952-08-28 Siemens Schuckertwerke A G Independent three-phase commutator generator for constant voltage when the load changes
DE915118C (en) * 1941-11-08 1954-07-15 Siemens Ag Three-phase series motor with intermediate transformer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE760944C (en) * 1939-12-09 1952-08-28 Siemens Schuckertwerke A G Independent three-phase commutator generator for constant voltage when the load changes
DE915118C (en) * 1941-11-08 1954-07-15 Siemens Ag Three-phase series motor with intermediate transformer

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