DE504012C - Three-phase collector machine that is connected in cascade with an asynchronous motor for the purpose of reactive power control - Google Patents

Three-phase collector machine that is connected in cascade with an asynchronous motor for the purpose of reactive power control

Info

Publication number
DE504012C
DE504012C DEA58382D DEA0058382D DE504012C DE 504012 C DE504012 C DE 504012C DE A58382 D DEA58382 D DE A58382D DE A0058382 D DEA0058382 D DE A0058382D DE 504012 C DE504012 C DE 504012C
Authority
DE
Germany
Prior art keywords
winding
cascade
power control
reactive power
asynchronous motor
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
DEA58382D
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.)
AEG AG
Original Assignee
AEG AG
Publication date
Priority to DEA58382D priority Critical patent/DE504012C/en
Application granted granted Critical
Publication of DE504012C publication Critical patent/DE504012C/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
    • H02K17/34—Cascade arrangement of an asynchronous motor with another dynamo-electric motor or converter
    • H02K17/38—Cascade arrangement of an asynchronous motor with another dynamo-electric motor or converter with a commutator machine

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Windings For Motors And Generators (AREA)

Description

Drehstrom-Kollektormaschine, die mit einem Asynchronmotor zum Zwecke der Blindleistungsregelung in Kaskade geschaltet ist Es sind Kaskaden bekannt, bestehend aus Asvnchromnotor und Drehstrom-Kollektormascline, die im Ständer eine Kompensationswicklung zur Unterdrückung des Ankerfeldes und eine Erregerwicklung mit regelbarer Stromstärke besitzen. Diese Drehstrom-Kollektormaschinen neigen zur Selbsterregung, wenn der ihnen von außen aufgedrückte Erregerstrom sehr klein oder Null ist. Der Grund dieser Erscheinung besteht offenbar darin, daß eine vollkommene Unterdrückung des Ankerfeldes in allen Betriebszuständen nicht zu erreichen ist.Three-phase collector machine with an asynchronous motor for the purpose the reactive power control is switched in cascade. There are known, consisting of cascades consisting of a chromium motor and a three-phase collector mascline with a compensation winding in the stator to suppress the armature field and an excitation winding with adjustable current strength own. These three-phase collector machines tend to self-excite when the The excitation current applied to them from outside is very small or zero. The reason this Apparently, there is a complete suppression of the anchor field cannot be reached in all operating states.

Es ist Ferner bekannt, Drehstrom-Kommittatormaschinen mit einer vom Ankerstrom durchflossenen Reihenschlußwicklung zu versehen, deren Feld eine dem Fließen des Ankerstroms entgegenwirkende Spannung erzeugt. Diese Reihenschlußwicklung wirkt dann als Gegenkompoundwicklung. Hierdurch wird die Selbsterregung unterdrückt.It is also known three-phase committator machines with one from To provide armature current flowing through series winding, the field of which is one of the Flow of the armature current generates counteracting voltage. This series winding then acts as a counter compound winding. This suppresses self-excitation.

Diese Anordnung ist jedoch schwer auszuführen, wenn es sich um Drehstrom-Kollektormaschinen mit besonders kleiner Spannung im Verhältnis zur Stromstärke handelt, weil dann eine Gegenkompoundwicklung mit nur einer Windung je Pol schon viel zu stark für den Zweck der Unterdrückung der Selbsterregung wird. Dieser Fall tritt in der Regel dann ein, wenn die Kaskade nicht zur Drehzahlregelung, sondern nur zur Blindstromregelung dient.However, this arrangement is difficult to implement when dealing with three-phase collector machines acts with a particularly low voltage in relation to the current strength, because then a counter compound winding with only one turn per pole is far too strong for the purpose of suppressing self-excitement becomes. This case usually occurs on when the cascade is not used for speed control, but only for reactive current control serves.

Die Eigenart einer solchen Kaskade, stets in der Nähe des Synchronismus zu arbeiten, ermöglicht es nun aber, erfindungsgemäß zur Unterdrückung der Selbsterregung der Kornpensationswicklung, dieser Wicklung oder einer mit ihr in Reihe liegenden Stromwendewicklung eine Wicklung parallel zu schalten. Die Ströme verteilen sich, da ihre Frequenz nahezu gleich dem Nullwert ist, praktisch allein gemäß den Ohmschen Widerständen.The peculiarity of such a cascade, always close to synchronism to work, it now makes it possible, according to the invention, to suppress self-excitation the compensation winding, this winding or one in series with it Commutation winding to connect a winding in parallel. The currents spread since their frequency is almost equal to the zero value, practically only according to the Ohms Resistances.

In der Abbildung, welche ein Ausführungsbeispiel der Erfindung zeigt, bedeutet v die Vordermaschine, k ist die Kompensationswicklung, w die Stromwendewicklung, e die Erregerwicklung und g die Gegenkompoundwicklung der Kommutatorhintermaschine. Hier ist die Wicklung g zur Unterdrückung der Selbsterregung der Kompensationswicklung k parallel zu der in Reihe mit k liegenden Stromwendewicklung w geschaltet. Die Hilfsmaschine zur Speisung der Erregerwicklung ist nicht dargestellt.In the figure which shows an embodiment of the invention, v means the front machine, k is the compensation winding, w the commutation winding, e the exciter winding and g the counter compound winding of the commutator rear machine. Here the winding g is connected in parallel to the commutation winding w lying in series with k to suppress the self-excitation of the compensation winding k. The auxiliary machine for feeding the field winding is not shown.

Claims (1)

PATENTANSPRUCH: Drehstrom-Kollektormaschine, die reit einem Asynchronmotor zum Zwecke der Blindleistungsregelung in Kaskade geschaltet ist und deren Ständer eine Wicklung zur Unterdrückung des Ankerfeldes (Kompensationswicklung), eine regelbare Erregerwicklung und eine so angeordnete Wicklung besitzt, daß ihre Amperewindungen eine dem Fließen des Ankerstromes entgegenwirkende Spannung erzeugen (Gegenkompoundwicklung), dadurch gekennzeichnet, daß die Gegenkompoundwicklung der Kompensationswicklung oder einer gegebenenfalls vorhandenen Stromwendewicklung parallel geschaltet ist.PATENT CLAIM: Three-phase collector machine that rides an asynchronous motor is connected in cascade for the purpose of reactive power control and their stator one winding to suppress the armature field (compensation winding), one adjustable Has excitation winding and a winding arranged so that its ampere turns generate a voltage that counteracts the flow of the armature current (counter compound winding), characterized in that the counter compound winding of the compensation winding or an optionally existing commutation winding is connected in parallel.
DEA58382D Three-phase collector machine that is connected in cascade with an asynchronous motor for the purpose of reactive power control Expired DE504012C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEA58382D DE504012C (en) Three-phase collector machine that is connected in cascade with an asynchronous motor for the purpose of reactive power control

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA58382D DE504012C (en) Three-phase collector machine that is connected in cascade with an asynchronous motor for the purpose of reactive power control

Publications (1)

Publication Number Publication Date
DE504012C true DE504012C (en) 1930-07-31

Family

ID=6941588

Family Applications (1)

Application Number Title Priority Date Filing Date
DEA58382D Expired DE504012C (en) Three-phase collector machine that is connected in cascade with an asynchronous motor for the purpose of reactive power control

Country Status (1)

Country Link
DE (1) DE504012C (en)

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