DE270002C - - Google Patents
Info
- 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
Links
- 230000002441 reversible Effects 0.000 claims description 2
- 230000001105 regulatory Effects 0.000 claims 1
- 239000003990 capacitor Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K23/00—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors
- H02K23/02—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors characterised by arrangement for exciting
- H02K23/22—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors characterised by arrangement for exciting having compensating or damping windings
Landscapes
- 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)
Publications (1)
Publication Number | Publication Date |
---|---|
DE270002C true DE270002C (en) |
Family
ID=526796
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DENDAT270002D Active DE270002C (en) |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE270002C (en) |
Cited By (2)
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 |
-
0
- DE DENDAT270002D patent/DE270002C/de active Active
Cited By (3)
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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