DE1162934B - Drive arrangement with at least two asynchronous motors operated in an electric shaft circuit - Google Patents
Drive arrangement with at least two asynchronous motors operated in an electric shaft circuitInfo
- Publication number
- DE1162934B DE1162934B DEA31344A DEA0031344A DE1162934B DE 1162934 B DE1162934 B DE 1162934B DE A31344 A DEA31344 A DE A31344A DE A0031344 A DEA0031344 A DE A0031344A DE 1162934 B DE1162934 B DE 1162934B
- Authority
- DE
- Germany
- Prior art keywords
- frequency converter
- network
- frequency
- drive arrangement
- slip
- 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.)
- Pending
Links
- 239000003990 capacitor Substances 0.000 claims description 7
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
- H02P27/16—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using AC to AC converters without intermediate conversion to DC
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P5/00—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors
- H02P5/74—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors controlling two or more AC dynamo-electric motors
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Multiple Motors (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Description
Antriebsanordnung mit mindestens zwei in elektrischer Wellenschaltung betriebenen Asynchronmotoren Die Erfindung betrifft eine Antriebsanordnung mit mindestens zwei in elektrischer Wellenschaltung betriebenen, an ein Drehstromnetz angeschlossenen Asynchronmotoren mit Schleifringanker, deren Ständer (bzw. Läufer) unmittelbar an das Netz an-: geschlossen sind und deren Läufer (bzw. Ständer) ein gemeinsames Schlupffrequenznetz bilden. Hierbei ist ein zusätzlicher Drehstrommotor vorgesehen, der über einen Frequenzwandler mit dem Schlupffrequenznetz verbunden ist.Drive arrangement with at least two in electrical shaft circuit operated asynchronous motors The invention relates to a drive arrangement with at least two operated in electric shaft circuit, connected to a three-phase network Asynchronous motors with slip ring armature, their stator (or rotor) directly on the network: are connected and their rotors (or stator) share a common slip frequency network form. An additional three-phase motor is provided here, which has a frequency converter is connected to the slip frequency network.
Bei einer bekannten derartigen Anordnung ist der Frequenzwandler als Kollektormaschine ausgebildet, und der ihn antreibende Drehstrommotor wird aus dem Hauptnetz gespeist. Diese Anordnung fällt sehr leicht außer Tritt, weil keine starre Kupplung der Drehzahlen des Frequenzwandlers und der Antriebsmotoren besteht. Der bei einer Drehzahlabweichung entstehende Ausgleichstrom kann nur durch Umsetzen in Wärme im Kollektor vernichtet werden, da der Frequenzwandler kein Drehmoment ausübt. Dies führt zu starkem Bürstenfeuer.In a known arrangement of this type, the frequency converter is as Collector machine formed, and the three-phase motor driving it is from the Main network fed. This arrangement falls out of step very easily because it is not rigid There is a coupling of the speeds of the frequency converter and the drive motors. Of the Compensating current that arises in the event of a speed deviation can only be achieved by converting be destroyed in heat in the collector, since the frequency converter has no torque exercises. This leads to strong brush fire.
Demgegenüber ist die erfindungsgemäße Antriebsanordnung der angegebenen Art dadurch gekennzeichnet, daß als Frequenzwandler eine normale Asynchronmaschine dient, die einerseits einstellbar mit einem der Wellenmotoren und andererseits direkt mit dem zusätzlichen Drehstromrnotor gekuppelt ist, derart, daß die Drehzahl des Frequenzwandlers auf verschiedene Werte eingestellt werden kann und daß Spannung und Frequenz der Ströme, mit denen der zusätzliche Motor durch den Frequenzwandler gespeist wird, bei jeder dieser Drehzahlen nahezu konstant sind.In contrast, the drive arrangement according to the invention is the one specified Kind characterized in that a normal asynchronous machine is used as the frequency converter serves, on the one hand adjustable with one of the shaft motors and on the other hand directly is coupled to the additional three-phase motor, such that the speed of the Frequency converter can be set to different values and that voltage and frequency of the currents with which the additional motor runs through the frequency converter is fed, are almost constant at each of these speeds.
Diese Anordnung hat nicht nur den Vorteil einer verlustlosen Regelbarkeit und einer großen Stabilität, sondern wegen der konstanten Spannung und Frequenz am Ausgang des Frequenzwandlers läßt sich an dieser Stelle besonders günstig ein Kondensator zum Einführen von Blindenergie in das Schlupffrequenznetz anschließen. Dieser Kondensator kann klein gehalten werden, während bei unmittelbarer Einschaltung eines Kondensators in das Schlupffrequenznetz wegen der niedrigen Frequenz und Spannung bei hohen Drehzahlen sehr große Kondensatoren erforderlich werden.This arrangement not only has the advantage of lossless controllability and great stability, but because of the constant voltage and frequency at the output of the frequency converter can be a particularly favorable one at this point Connect a capacitor to introduce reactive energy into the slip frequency network. This capacitor can be kept small while being turned on immediately a capacitor in the slip frequency network because of the low frequency and voltage very large capacitors are required at high speeds.
Bei einer bekannten Kaskadenschaltung zur Drehzahlregelung sitzen ein Frequenzwandler und ein von diesem gespeister Hintermotor auf der gleichen Welle wie der Vordermotor. Auch hier ist eine Kollektormaschine als Frequenzwandler verwendet, und die von ihr abgegebene Spannung ist nicht konstant. Infolgedessen wäre die Übertragung dieser Anordnung auf eine elektrische Welle weniger vorteilhaft, insbesondere hinsichtlich der Einschaltung eines Kondensators, als die Anordnung gemäß der Erfindung.Sit in a known cascade circuit for speed control a frequency converter and a rear motor fed by this on the same shaft like the front engine. Here, too, a collector machine is used as a frequency converter, and the voltage it gives off is not constant. As a result, the transfer would be this arrangement is less advantageous on an electric shaft, in particular with regard to the connection of a capacitor, as the arrangement according to the invention.
Ein Ausführungsbeispiel der Erfindung wird nachstehend an Hand der Zeichnung erläutert.An embodiment of the invention is described below with reference to the Drawing explained.
Die Ständer zweier Asynchronantriebsmotoren 1 und 1' mit Schleifringanker sind mit einem Drehstromnetz 2 verbunden, während die Schleifringe dieser Motoren ein gemeinsames Schlupffrequenznetz 3 bilden. Eine Abzweigung 4 vom Schlupffrequenznetz 3 führt zu den Schleifringen eines Frequenzwandlers 5. Die Welle dieses Frequenz wandlers ist über eine mechanische Kupplung 6, 7, 8 mit einem der Wellenmotoren 1 verbunden. Die Welle des Frequenzwandlers 5 ist ferner mit einem regelbaren Drehstromkollektormotor 9 gekuppelt, dessen Ständer mit dem Ausgang 10 des Frequenzwandlers 5 verbunden ist.The stator of two asynchronous drive motors 1 and 1 'with slip ring armatures are connected to a three-phase network 2, while the slip rings of these motors form a common slip frequency network 3. A branch 4 from the slip frequency network 3 leads to the slip rings of a frequency converter 5. The shaft of this frequency converter is connected to one of the shaft motors 1 via a mechanical coupling 6, 7, 8. The shaft of the frequency converter 5 is also coupled to a controllable three-phase collector motor 9, the stator of which is connected to the output 10 of the frequency converter 5 .
Durch Einstellung der Drehzahl des Drehstromkollektormotors 9 wird die gemeinsame Drehzahl sämtlicher Antriebsmotoren 1, 1' geregelt. Mit dem Ausgang 10 ist ferner ein Kondensator 11 verbunden, der Blindenergie in das Schlupffrequenznetz einführt und hierdurch die elektrische Welle steifer macht.By adjusting the speed of the three-phase collector motor 9 the common speed of all drive motors 1, 1 'regulated. With the exit 10 a capacitor 11 is also connected, the reactive energy in the slip frequency network introduces and thereby makes the electric shaft more rigid.
Claims (2)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL1162934X | 1958-03-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1162934B true DE1162934B (en) | 1964-02-13 |
Family
ID=19870693
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEA31344A Pending DE1162934B (en) | 1958-03-14 | 1959-02-14 | Drive arrangement with at least two asynchronous motors operated in an electric shaft circuit |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE1162934B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH57382A (en) * | 1911-11-02 | 1913-01-02 | Oerlikon Maschf | Arrangement for speed control of multi-phase asynchronous motors |
| GB281712A (en) * | 1926-12-04 | 1928-04-19 | Gen Electric | Improvements in or relating to the cascade connection of asynchronous motors |
| DE525754C (en) * | 1926-06-08 | 1931-05-28 | Siemens Schuckertwerke Akt Ges | Synchronization arrangement for electric motors with the aid of asynchronous auxiliary machines mechanically coupled with them |
| DE562719C (en) * | 1932-10-28 | Siemens Schuckertwerke Akt Ges | Device for achieving synchronization of asynchronous motors | |
| DE571984C (en) * | 1930-06-05 | 1933-03-08 | Siemens Schuckertwerke Akt Ges | Arrangement for maintaining the synchronization of several asynchronous motors |
| DE906823C (en) * | 1943-03-28 | 1954-03-18 | Siemens Ag | Device for achieving synchronization of several asynchronous motors connected to the same three-phase network |
-
1959
- 1959-02-14 DE DEA31344A patent/DE1162934B/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE562719C (en) * | 1932-10-28 | Siemens Schuckertwerke Akt Ges | Device for achieving synchronization of asynchronous motors | |
| CH57382A (en) * | 1911-11-02 | 1913-01-02 | Oerlikon Maschf | Arrangement for speed control of multi-phase asynchronous motors |
| DE525754C (en) * | 1926-06-08 | 1931-05-28 | Siemens Schuckertwerke Akt Ges | Synchronization arrangement for electric motors with the aid of asynchronous auxiliary machines mechanically coupled with them |
| GB281712A (en) * | 1926-12-04 | 1928-04-19 | Gen Electric | Improvements in or relating to the cascade connection of asynchronous motors |
| DE571984C (en) * | 1930-06-05 | 1933-03-08 | Siemens Schuckertwerke Akt Ges | Arrangement for maintaining the synchronization of several asynchronous motors |
| DE906823C (en) * | 1943-03-28 | 1954-03-18 | Siemens Ag | Device for achieving synchronization of several asynchronous motors connected to the same three-phase network |
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