DE498524C - DC exciter for synchronizing single-phase induction motors - Google Patents

DC exciter for synchronizing single-phase induction motors

Info

Publication number
DE498524C
DE498524C DEA45744D DEA0045744D DE498524C DE 498524 C DE498524 C DE 498524C DE A45744 D DEA45744 D DE A45744D DE A0045744 D DEA0045744 D DE A0045744D DE 498524 C DE498524 C DE 498524C
Authority
DE
Germany
Prior art keywords
exciter
phase induction
induction motors
winding
currents
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
DEA45744D
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 DEA45744D priority Critical patent/DE498524C/en
Application granted granted Critical
Publication of DE498524C publication Critical patent/DE498524C/en
Expired legal-status Critical Current

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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
    • H02K17/26—Asynchronous induction motors having rotors or stators designed to permit synchronous operation

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Synchronous Machinery (AREA)

Description

Gleichstromerregermaschine zur Synchronisierung von Einphaseninduktionsmotoren Bekanntlich können Einphasen Asynchronmotoren nach erfolgtem Anlauf durch Ein leiten von Gleichstrom in eine, mehrere oder alle Phasen der mehrphasigen Läuferwicklung zu Synchronmotoren gemacht werden.DC exciter for synchronizing single-phase induction motors It is well known that single-phase asynchronous motors can pass through A after startup of direct current in one, several or all phases of the polyphase rotor winding can be made into synchronous motors.

Abb. r zeigt eine derartige Einrichtung. Hierin bedeutet ai .das Netz, a die primäre Hauptwicklung des Induktionsmotors, b eine zum Anlassen idienende Hilfswicklung, c die Sekundärwicklung. Letztere liegt ?.n den Klemmen e und f der Erregermaschine d.Fig. R shows such a device. Here ai means the network, a the primary main winding of the induction motor, b an auxiliary winding used for starting, c the secondary winding. The latter is located in terminals e and f of the exciter d.

Die Sekundärwicklung ist nun gleichzeitig Erreger- und Dämpferwicklung und muß als Dämpferwicklung, wie bekannt, Ströme von doppelter Netzfrequenz führen. Diese rufen in der Erregermaschine d ein mit gleicher Frequenz pulsierendes Ankerfeld hervor, welches d;ie Stromwendung stört und in unerwünschter Weise dem Fließen der Dämpferströme entgegenwirkt. Zweck der Erfindung ist nun, diese Ströme doppelter Netzfrequenz, die in bekannter Weise durch Anordnung von Hilfswicklungen auf dem Ständer des Einphasenmotors abgedämpft werden können, ohne bauliche Veränderungen am Motor selbst von der Erregermaschine d fernzuhalten oder in dieser Maschine unschädlich zumachen.The secondary winding is now the exciter and damper winding at the same time and as a damper winding, as is known, must carry currents of twice the mains frequency. These call in the exciter d an armature field pulsating with the same frequency out which disturbs the commutation and in an undesirable way the flow of the Counteracts damper currents. The purpose of the invention is now to double these currents Mains frequency, which in a known manner by the arrangement of auxiliary windings on the The stator of the single-phase motor can be dampened without structural changes on the motor itself from the exciter d or harmless in this machine close.

Erfindungsgemäß wird zu diesem Zweck entweder parallel zur Erregermaschine ein Ohmscher Widerstand gelegt oder im Ständer der Erregermaschine eine kurzgeschlossene Gegenwicklung angeordnet, welche die Wirkung der Ströme doppelter Frequenz aufhebt.According to the invention, either parallel to the exciter machine for this purpose an ohmic resistor is placed or a short-circuited one in the stator of the exciter Opposite winding arranged, which cancels the effect of the currents of double frequency.

Die Zeichnung zeigt zwei Ausführungsbeispiele.The drawing shows two exemplary embodiments.

Gemäß Abb. 2 liegt parallel zu den Klemmen e und f der Erregermaschine d ein Widerstand w. Die Wechselströme fließen dann zum größten Teil durch diesen Ohmschen Widerstand. Dieser Widerstand, der klein sein muß, wenn er eine gute Dämpfung gewährleisten soll, nimmt jedoch einen beträchtlichen Gleichstrom auf und bedingt eine entsprechend größere Erregermaschine.According to Fig. 2 there is a resistor w parallel to the terminals e and f of the exciter d . The alternating currents then flow for the most part through this ohmic resistor. However, this resistance, which must be small if it is to ensure good damping, consumes a considerable direct current and requires a correspondingly larger exciter.

Gemäß-Abb. 3 besitzt die Erregermaschine d ,eine Dämpferwicklung s, die aus einer Käfigwicklung oder mehreren elektrisch getrennten Käfigwicklungen bestehen kann, in denen die zur Aufhebung des Ankerfeldes von zweifacher Netzfrequenz erforderlichen Ströme induziert werden.According to fig. 3 has the exciter d, a damper winding s, those consisting of a cage winding or several electrically separated cage windings may exist, in which to cancel the armature field of twice the network frequency required currents are induced.

Claims (1)

PATENTANSPRUCH: Gleichstromerregermaschinie zur Synchrorvisierung von Einphaseninduktionsmotoren, dadurch gekennzeichnet, daß die in ihr fließenden Ströme doppelter Netzfrequenz durch einen parallel zur Maschine liegenden Ohmschen Widerstand geleitet oder durch eine oder mehrere auf dem Erregerteil befindliche kurzgeschlossene Wicklungen abgedämpft werden.PATENT CLAIM: DC exciter machine for synchronous sighting of single-phase induction motors, characterized in that the flowing in it Currents of double the mains frequency through an ohmic parallel to the machine Resistance directed or by one or more located on the exciter part short-circuited windings are damped.
DEA45744D DC exciter for synchronizing single-phase induction motors Expired DE498524C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEA45744D DE498524C (en) DC exciter for synchronizing single-phase induction motors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA45744D DE498524C (en) DC exciter for synchronizing single-phase induction motors

Publications (1)

Publication Number Publication Date
DE498524C true DE498524C (en) 1930-05-23

Family

ID=6934880

Family Applications (1)

Application Number Title Priority Date Filing Date
DEA45744D Expired DE498524C (en) DC exciter for synchronizing single-phase induction motors

Country Status (1)

Country Link
DE (1) DE498524C (en)

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