DE408881C - Device for speed control of three-phase cascades - Google Patents
Device for speed control of three-phase cascadesInfo
- Publication number
- DE408881C DE408881C DEA39085D DEA0039085D DE408881C DE 408881 C DE408881 C DE 408881C DE A39085 D DEA39085 D DE A39085D DE A0039085 D DEA0039085 D DE A0039085D DE 408881 C DE408881 C DE 408881C
- Authority
- DE
- Germany
- Prior art keywords
- speed control
- transformer
- phase cascades
- phase
- choke coil
- 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
Links
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
- H02K17/34—Cascade arrangement of an asynchronous motor with another dynamo-electric motor or converter
- H02K17/38—Cascade arrangement of an asynchronous motor with another dynamo-electric motor or converter with a commutator machine
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Ac Motors In General (AREA)
Description
Einrichtung zur Drehzahlregelung von Drehstromkaskaden. Nach Patent 407847 wurde die Drehzahländerung von Drehstromkaskaden 'dadurch hervorgerufen, daß in den Primärstromkreis des Erregertransformators der Kollektorhintermaschine für den.Drehzahlabfall ein Ohmscher Widerstand geschaltet wurde. Erfindungsgemäß kommen Ohmscher und Induktiver Widerstand gleichzeitig zur Anwendung. Abb. i zeigt einen Transformator T dessen Sekundärwicklung an den Schleifringen S des Kollektorhintermotors H liegt, und an dessen Prünärwicklung eine Drosselspule D angeschlossen ist. An der Zuleitung zwischen der Primärwicklung des Transformators .T und der Drosselspule D liegt der Wasserwiderstand R.Device for speed control of three-phase cascades. According to patent 407847 the change in speed of three-phase cascades was caused by that in the primary circuit of the excitation transformer of the collector rear machine an ohmic resistor was connected for the speed drop. According to the invention Ohmic and inductive resistance are used at the same time. Fig.i shows a transformer T whose secondary winding on the slip rings S of the collector rear motor H, and on its primary winding one Choke coil D connected is. On the lead between the primary winding of the transformer .T and the Choke coil D is the water resistance R.
Bei tiefster Elektrodenstellung wird den Schleifringen S die dem übersetzungsverhältnis des Transformators T entsprechende Spannung aufgedrückt, denn. die Drosselspule D ist hierbei durch den nunmehr sehr kleinen Wasserwiderstand R kurzgeschlossen. Bei höchster Elektrodenstellung muß der Primärstrom des Transformators T zum größten Teil die Drosselspule D durchlaufen, und die den Schleifringen S aufgedrückte Spannung wird je nach Wahl der Drosselspule D beliebig verkleinert.When the electrode is at the lowest position, the slip rings S will have the transmission ratio of the transformer T corresponding voltage pressed, because. the choke coil D is short-circuited here due to the now very low water resistance R. At the highest electrode position, the primary current of the transformer T must be greatest Part of the choke coil D pass through, and the voltage impressed on the slip rings S. is reduced as required depending on the choice of choke coil D.
Abb. a zeigt dieselbe Anordnung wie Abb, i, nur mit dem Unterschied, daß, ebenso wie beim Hauptpatent, zur Verbesserung des Leistungsfaktors ein Zusatztransformator Ti in 2o Reihe mit der Sekundärwicklung des zur Drehzahlregelung dienenden Transformators T2 geschaltet ist.Fig.a shows the same arrangement as Fig, i, only with the difference, that, as with the main patent, an additional transformer to improve the power factor Ti in 2o series with the secondary winding of the transformer used for speed control T2 is switched.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEA39085D DE408881C (en) | 1922-12-29 | 1922-12-29 | Device for speed control of three-phase cascades |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEA39085D DE408881C (en) | 1922-12-29 | 1922-12-29 | Device for speed control of three-phase cascades |
Publications (1)
Publication Number | Publication Date |
---|---|
DE408881C true DE408881C (en) | 1925-01-29 |
Family
ID=6931170
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEA39085D Expired DE408881C (en) | 1922-12-29 | 1922-12-29 | Device for speed control of three-phase cascades |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE408881C (en) |
-
1922
- 1922-12-29 DE DEA39085D patent/DE408881C/en not_active Expired
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