AT100116B - Asynchronous machine assembled with a frequency converter. - Google Patents
Asynchronous machine assembled with a frequency converter.Info
- Publication number
- AT100116B AT100116B AT100116DA AT100116B AT 100116 B AT100116 B AT 100116B AT 100116D A AT100116D A AT 100116DA AT 100116 B AT100116 B AT 100116B
- Authority
- AT
- Austria
- Prior art keywords
- frequency converter
- asynchronous machine
- machine assembled
- assembled
- slip rings
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K47/00—Dynamo-electric converters
- H02K47/18—AC/AC converters
- H02K47/22—Single-armature frequency converters with or without phase-number conversion
- H02K47/28—Single-armature frequency converters with or without phase-number conversion operating as commutator machines with added slip-rings
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Current Collectors (AREA)
- Dc Machiner (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Description
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Mit einem Frequenzwandler zusammengebaute Asynchronm,aschine.
Bei der bekannten Anwendung eines Frequenzwandlers zur Verbesserung des Leistungsfaktors von Asynchronmaschingn nach Fig. 1 ist die Wirkungsweise des Maschinensatzes wesentlich abhängig von der Grösse des Winkels zwischen der im Läufer der Hauptmaschine V erzeugten E. M. K. und der
EMI1.1
Stromwender des Freql1enzwandlers E, was jedoch nur dann möglich ist, wenn diese Maschine keine Wendepole besitzt. Eine weitere Möglichkeit besteht in der künstlichen Phasenverschiebung der den Schleifringen von E aufgedruckten Spannung durch Phasenmischung im Transformator T, wobei sich jedoch bei niedriger Spannung technische Schwierigkeiten ergeben.
Schliesslich könnte man die gewollte Verschiebung der beiden E. 1Vf. 1\. auch durch eine gegenseitige Verdrehung der Wellen von 7 und E mittels einer entsprechenden Kupplung erreichen. Auf dieser an sich bekannten Möglichkeit aufbauend, ist die vorliegende Erfindung entstanden. Insbesondere wenn der Frequenzwandler fliegend auf der Welle des Hauptmotors angeordnet werden soll, führt die Ausbildung einer verstellbaren Kupplung au grossen konstruktiven Schwierigkeiten.
Gemäss der Erfindung wird mm eine Kupplung vermieden und die angeführte Schwierigkeit dadurch beseitigt, dass man die Anschlüsse der Schleifringe an der Gleichstromwicklung des Frequmz- wandlers versetzbar anordnet.
Die Fig. 2 und 3 zeigen eine Ausführungsform der neuen Einrichtung. Die Schleifringe sind auf eine besondere Nabe 1 aufgesetzt, welche gegen eine fest mit der Welle verkeilte Buchse 2 drehbar ist.
Der Nabenflansch ist mit Schrauben : : J versehen, die durch Langlöcher des Buchsenflansches greifen und eine Verdrehung des Schleifringkörpers je nach Länge dieser Schlitze zulassen. Die Ableitungsbolzen 4 der Schleifringe erhalten an ihren'Enden Gabeln 5, in denen je ein um den Punkt o drehbares Messer 6 gelagert ist. Wenn man nun beliebig viele Kommutatorsegmente 7 mit entsprechenden Schlitzen versieht, so kann man je nach Wahl die Messer an beliebige Segmente anschliessen. Nach Einstellung des Satzes auf den erforderlichen Betriebszustand werden die Anschlüsse verlötet und die Stellschraube 8 angebracht.
<Desc / Clms Page number 1>
Asynchronous machine assembled with a frequency converter.
In the known use of a frequency converter to improve the power factor of asynchronous machines according to FIG
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Commutator of Freql1enzwandlers E, which is only possible if this machine has no reversing poles. A further possibility consists in the artificial phase shift of the voltage printed on the slip rings of E by phase mixing in the transformer T, although technical difficulties arise at low voltage.
Finally, the deliberate postponement of the two E. 1Vf. 1\. can also be achieved by mutually rotating the shafts of 7 and E using a corresponding coupling. The present invention is based on this possibility, which is known per se. In particular, if the frequency converter is to be arranged overhung on the shaft of the main motor, the formation of an adjustable coupling leads to great structural difficulties.
According to the invention, a coupling is avoided and the stated difficulty is eliminated by arranging the connections of the slip rings on the direct current winding of the frequency converter so that they can be moved.
Figs. 2 and 3 show an embodiment of the new device. The slip rings are placed on a special hub 1 which can be rotated against a bushing 2 that is firmly keyed to the shaft.
The hub flange is provided with screws:: J, which grip through the elongated holes of the socket flange and allow the slip ring body to rotate depending on the length of these slots. The derivation bolts 4 of the slip rings have forks 5 at their ends, in each of which a knife 6 rotatable about point o is mounted. If you now provide any number of commutator segments 7 with appropriate slots, you can connect the knife to any segments, depending on your choice. After setting the set to the required operating condition, the connections are soldered and the adjusting screw 8 is attached.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEA38931D DE391157C (en) | 1922-12-01 | 1922-12-01 | Frequency converter |
Publications (1)
Publication Number | Publication Date |
---|---|
AT100116B true AT100116B (en) | 1925-06-10 |
Family
ID=6931090
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT100116D AT100116B (en) | 1922-12-01 | 1923-12-01 | Asynchronous machine assembled with a frequency converter. |
Country Status (2)
Country | Link |
---|---|
AT (1) | AT100116B (en) |
DE (1) | DE391157C (en) |
-
1922
- 1922-12-01 DE DEA38931D patent/DE391157C/en not_active Expired
-
1923
- 1923-12-01 AT AT100116D patent/AT100116B/en active
Also Published As
Publication number | Publication date |
---|---|
DE391157C (en) | 1924-03-05 |
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