DE270002C - - Google Patents

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Publication number
DE270002C
DE270002C DENDAT270002D DE270002DA DE270002C DE 270002 C DE270002 C DE 270002C DE NDAT270002 D DENDAT270002 D DE NDAT270002D DE 270002D A DE270002D A DE 270002DA DE 270002 C DE270002 C DE 270002C
Authority
DE
Germany
Prior art keywords
closing circuit
fluctuations
self
induction
capacitance
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.)
Active
Application number
DENDAT270002D
Other languages
German (de)
Publication of DE270002C publication Critical patent/DE270002C/de
Active legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K23/00DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors
    • H02K23/02DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors characterised by arrangement for exciting
    • H02K23/22DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors characterised by arrangement for exciting having compensating or damping windings

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)

Description

KAISERLICHESIMPERIAL

PATENTAMT.PATENT OFFICE.

Bei Kollektormaschinen, besonders solchen mit sehr geringem Luftspalt unter den Wendepolen, geben die Feldpulsationen, die durch die Zahnfluktuationen in den Wendepolen er- i zeugt werden, Anlaß zu Strömen hoher Wechselzahl, die sich dem Hauptstrome überlagern und Bürstenfeuer verursachen.For collector machines, especially those with a very small air gap under the reversing poles, give the field pulsations that result from the tooth fluctuations in the reversing poles be produced, an occasion for currents of high alternation, which are superimposed on the main current and cause brush fire.

Diese schnellen Feldpulsationen können durch äußeren Schluß der Wendepole abgedämpftThese fast field pulsations can be dampened by external closure of the reversing poles

ίο werden. Am besten eignet sich für diesen äußeren Schluß ein Kondensator, der der Wendespule parallel geschaltet wird, wie Fig. ι der Zeichnung zeigt. Weniger geeignet ist ein Widerstand, am schlechtesten eine Selbstinduktion. ίο be. Works best for this outer conclusion a capacitor which is connected in parallel to the reversing coil, as Fig. ι the drawing shows. Resistance is less suitable, and self-induction is worst.

Die günstigste Wirkung wird erzielt, wenn der ganze Schließungskreis auf Resonanz mit der schädlichen Oberwelle abgestimmt wird. Bei veränderlicher Drehzahl wendet man zweckmäßig mit der Drehzahl regelbare Widerstände, Selbstinduktionen oder Kapazitäten an, um auf diese Weise selbsttätig mit Änderung der Geschwindigkeit Resonanz zu erreichen.
Nach Fig. ι wird die Wendepolspule selbst für den Schließungskreis benutzt. Man kann auf den Wendepolen aber auch eine besondere Spule anordnen, die über einen Kondensator geschlossen wird (Fig. 2). Ebenso kann man, wie Fig. 3 zeigt, statt der zweiten Spule auf dem Wendepol, oder auch in Verbindung mit dieser, einen besonderen Transformator anordnen.
The most favorable effect is achieved when the entire closing circuit is tuned to resonance with the harmful harmonic. In the case of a variable speed, it is advisable to use resistors, self-inductions or capacitances that can be controlled with the speed, in order to automatically achieve resonance when the speed changes.
According to Fig. Ι the reversible pole coil itself is used for the closing circuit. You can also arrange a special coil on the reversing poles, which is closed by a capacitor (Fig. 2). It is also possible, as shown in FIG. 3, to arrange a special transformer instead of the second coil on the reversing pole or in connection with it.

Claims (3)

Patent-Ansprüche:Patent Claims: 1. Einrichtung zur Abdämpfung der Feldpulsationen in den Wendepolen von Kollektormaschinen mit Nutenankern, dadurch gekennzeichnet, daß zu den Wendespulen ein äußerer Schließungskreis angeordnet ist, der eine Kapazität allein oder eine Kapazität in Verbindung mit Widerstand oder Selbstinduktion oder mit beiden enthält, derart, daß im wesentlichen nur die durch die Zahnfluktuationen erzeugten raschen Feldschwankungen gedämpft werden, während andere Feldschwankungen geringerer Frequenz nur unbeträchtlich beeinflußt werden;1. Device for damping the field pulsations in the reversing poles of Collector machines with grooved anchors, characterized in that for the reversible coils an outer closing circuit is arranged, which has a capacitance alone or a capacitance in conjunction with resistance or self-induction, or both, such that essentially only those produced by the tooth fluctuations rapid field fluctuations are damped, while other field fluctuations of lower frequency are only negligible to be influenced; 2. Schließungskreis nach Anspruch 1, dadurch gekennzeichnet, daß er annähernd oder genau auf Resonanz mit der schädlichen Oberwelle abgestimmt ist.2. Closing circuit according to claim 1, characterized in that it is approximately or is precisely tuned to resonate with the harmful harmonic. 3. Schließungskreis nach Anspruch 1 und 2 zur Herstellung der richtigen Resonanz bei veränderlicher Drehzahl der Maschine, dadurch gekennzeichnet, daß die in ihm liegenden Kapazitäten, Widerstände oder Selbstinduktionen entsprechend der Drehzahl regelbar sind.3. Closing circuit according to claim 1 and 2 for producing the correct resonance with variable speed of the machine, characterized in that the capacitances, resistances or self-induction can be regulated according to the speed. Hierzu 1 Blatt Zeichnungen.1 sheet of drawings.
DENDAT270002D Active DE270002C (en)

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DE270002C true DE270002C (en)

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ID=526796

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1265839B (en) * 1963-04-04 1968-04-11 Licentia Gmbh Brushless electric machine
EP0681361A1 (en) * 1994-02-15 1995-11-08 The Kansai Electric Power Co., Inc. Synchronous machine with higher harmonics absorption function

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1265839B (en) * 1963-04-04 1968-04-11 Licentia Gmbh Brushless electric machine
EP0681361A1 (en) * 1994-02-15 1995-11-08 The Kansai Electric Power Co., Inc. Synchronous machine with higher harmonics absorption function
US5668458A (en) * 1994-02-15 1997-09-16 Kansai Electric Power Co., Inc. Synchronous machine with harmonics dampening

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