DE474028C - Self-excited phase shifter with drive winding - Google Patents

Self-excited phase shifter with drive winding

Info

Publication number
DE474028C
DE474028C DES64230D DES0064230D DE474028C DE 474028 C DE474028 C DE 474028C DE S64230 D DES64230 D DE S64230D DE S0064230 D DES0064230 D DE S0064230D DE 474028 C DE474028 C DE 474028C
Authority
DE
Germany
Prior art keywords
phase shifter
winding
self
drive winding
rotor
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
DES64230D
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
Priority to DES64230D priority Critical patent/DE474028C/en
Application granted granted Critical
Publication of DE474028C publication Critical patent/DE474028C/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K17/00Asynchronous induction motors; Asynchronous induction generators
    • H02K17/02Asynchronous induction motors
    • H02K17/28Asynchronous induction motors having compensating winding for improving phase angle

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

Description

Eigenerregter Phasenschieber mit Antriebswicklung Man hat vorgeschlagen, eigenernegte Phasenschieber mit ihrer Antriebsmaschine zusammenzulegen, indem man den Phasenschieber im Stator oder Rotor mit einer zweiten induzierenden Wicklung anderer Polzahl versieht und entweder auf dem Rotor noch eine zweite induzierte Wicklung derselben Polzahl anbringt oder andere besondere Mittel anwendet, um in der vorhandenen Rotorwicklung Induktionsströme mit der Polzahl der im Stator hinzugefügten induzierenden Wicklung zu ermöglichen. Dieselbe Aufgabe wird durch die Erfindung auf andere Weise gelöst, wobei .die induzierende motorische Wicklung dieselbe Polzahl wie die Rotorwicklung erhält. Diese Rotorwicklung wird an drei um 120' elektrisch versetzt liegenden Punkten angezapft, und die Anzapfpunkte werden mit einer im Stern oder Dreieck geschalteten Drosselspule verbunden. Dies ist .ein besonders einfaches Mittel, um den Antrieb des Phasenschiebers in diesen selbst zu verlegen.Self-excited phase shifter with drive winding It has been proposed that to combine self-harvested phase shifters with their prime mover by the phase shifter in the stator or rotor with a second inductive winding with a different number of poles and either induced a second one on the rotor Winding the same number of poles or uses other special means to in the existing rotor winding induction currents with the number of poles added in the stator to allow inducing winding. The same object is achieved by the invention solved in a different way, with the inducing motor winding having the same number of poles how the rotor winding receives. This rotor winding becomes electrical on three by 120 ' staggered points are tapped, and the taps are marked with one in the star or delta connected inductor. This is a particularly simple one Means to move the drive of the phase shifter in this itself.

Die Drosselspule kann entweder in den Anker eingebaut werden, oder die Anzapfpunkte der Rotorwicklung werden an Schleifringe geführt, deren Bürsten mit der Drosselspule verbunden- werden. Im zweiten Falle kann dann noch parallel zur Drosselspule ein Ohmscher Widerstand zum Anlassen ,geschaltet werden, der nach dem Anlassen abgeschaltet wird.The choke coil can either be built into the armature, or the tapping points of the rotor winding are led to slip rings, their brushes be connected to the choke coil. In the second case, it can still be done in parallel to the choke coil an ohmic resistance can be switched for starting, the after switched off after starting.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt. In dieser bedeutet n das Netz, t einen. Transformator, über den eine Wicklung des Ständers s des Phasenschiebers gespeist wird. Der Rotor r mit dem Kommutator h und den zugehörigen Bürsten b besitzt noch drei Schleifringe f, die an drei elektrisch um i2o° versetzte Punkte der Rotorwicklung angeschlossen sind. Die S.chleifringbürsten u sind mit einer Drosselspule d verbunden. Außerdem ist parallel zu der Drosselspule ein regelbarer Ohmscher Widerstand w geschaltet, der als Anlasser für den Phasenschieber dient. Für den motorischen Zustand der Maschine ergibt sich dann folgendes. Die Statorwicklung erhält eine konstante Spannung aus dem Netz. Der Rotor rotiert mit geringem Schlupf hinter der synchronen Drehzahl. Die Drosselspule bietet den niederfrequenten Strömten im Rotor geringen Widerstand. An den Kommutatorbürsten erscheinen die Ströme mit Netzfrequenz und können daher gegen den großen induktiven Widerstand des Hauptmotors nicht zu meßbarer Stäxke anwachsen.An embodiment of the invention is shown in the drawing. In this, n means the network, t means one. Transformer through which one winding of the stator of the phase shifter is fed. The rotor r with the commutator h and the associated brushes b also has three slip rings f, which are connected to three points of the rotor winding that are electrically offset by i2o °. The slip ring brushes u are connected to a choke coil d. In addition, a controllable ohmic resistor w is connected in parallel to the choke coil and serves as a starter for the phase shifter. The following then results for the motor state of the machine. The stator winding receives a constant voltage from the network. The rotor rotates with little slip behind the synchronous speed. The choke coil offers low resistance to the low-frequency currents in the rotor. The currents appear at the commutator brushes with mains frequency and therefore cannot grow to measurable strengths against the large inductive resistance of the main motor.

Für den Phasenschieberbetrieb ist die Ständerwicklung über das Netz kurzgeschlossen. Die Wirkung einer solchen Kurzschlußwicklung ist bereits aus verschiedenen Gründen als günstig bekannt.For the phase shifter operation, the stator winding is via the network shorted. The effect of such a short-circuit winding is already different Reasons known as favorable.

Die Phasenschieberströme erscheinen an den Schleifringen mit hoher Frequenz und finden an der Drosselspule einen viel größeren Widerstand als die niedrigfrequenten -Ströme. Sie können deshalb nicht zu stark werden. Die unerwünschte Abdämpfung, die diese Ströme verursachen, kann durch ;eine genügend große Induktivität der Drosselspule auf ein zulässiges Maß verkleinert werden.The phase shifter currents appear at the slip rings with high Frequency and find a much greater resistance at the choke coil than the low-frequency ones -Currents. You cannot therefore become too strong. The unwanted damping, which cause these currents can be due to a sufficiently large inductance of the choke coil be reduced to an acceptable level.

Claims (3)

PATEN T ANS PRÜCHL: i. Eigenerregter Phasenschieber mit Antriebswicklung, gekennzeichnet durch eine Statorwicklung gleicher Polzahl mit der Rotorwickluug und einen an drei elektrisch um i20° versetzte Punkte .der Rotorwicklung angeschlossenen induktiven Widerstand. PATEN T ANS PRÜCHL: i. Self-excited phase shifter with drive winding, characterized by a stator winding with the same number of poles as the rotor winding and an inductive resistor connected to three points of the rotor winding that are electrically offset by i20 °. 2. Phasenschieber nach Anspruch i, dadurch gekennzeichnet, daß der induktive Widerstand über drei Schleifringe mit der Rotorwicklung verbunden ist. 2. Phase shifter according to claim i, characterized in that that the inductive resistance is connected to the rotor winding via three slip rings is. 3. Phasenschieber nach Anspruch 2, gekennzeichnet durch einen parallel. zum induktiven Widerstand an den Schleifringen liegenden abschaltbaren Ohmschen Widerstand.3. Phase shifter according to claim 2, characterized by a parallel. to the inductive resistance on the slip rings, switchable ohmic resistance.
DES64230D Self-excited phase shifter with drive winding Expired DE474028C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DES64230D DE474028C (en) Self-excited phase shifter with drive winding

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES64230D DE474028C (en) Self-excited phase shifter with drive winding

Publications (1)

Publication Number Publication Date
DE474028C true DE474028C (en) 1929-03-25

Family

ID=7497014

Family Applications (1)

Application Number Title Priority Date Filing Date
DES64230D Expired DE474028C (en) Self-excited phase shifter with drive winding

Country Status (1)

Country Link
DE (1) DE474028C (en)

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