DE571984C - Arrangement for maintaining the synchronization of several asynchronous motors - Google Patents
Arrangement for maintaining the synchronization of several asynchronous motorsInfo
- Publication number
- DE571984C DE571984C DE1930571984D DE571984DD DE571984C DE 571984 C DE571984 C DE 571984C DE 1930571984 D DE1930571984 D DE 1930571984D DE 571984D D DE571984D D DE 571984DD DE 571984 C DE571984 C DE 571984C
- Authority
- DE
- Germany
- Prior art keywords
- synchronization
- motors
- arrangement
- asynchronous motors
- maintaining
- 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
- 238000004804 winding Methods 0.000 claims description 8
- 238000012423 maintenance Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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 Multiple Motors (AREA)
Description
DEUTSCHES REICHGERMAN EMPIRE
AUSGEGEBEN AM 8. MÄRZ 1933ISSUED ON MARCH 8, 1933
REICHSPATENTAMTREICH PATENT OFFICE
PATENTSCHRIFTPATENT LETTERING
KLASSE 21 d 2 GRUPPE 24 osCLASS 21 d 2 GROUP 24 os
Patentiert im Deutschen Reiche vom 5. Juni 1930 abPatented in the German Empire on June 5, 1930
Zur Erzielung des Gleichlaufes von mehreren Asynchronmotoren ist es bekannt, die Sekundärwicklungen in Parallelschaltung miteinander zu verbinden. Diese Schaltung hat jedoch den Nachteil, daß bei geringem Schlupf der Motoren die Sekundärspannung s.ehr gering ist, so daß nur geringe synchronisierende Kräfte zwischen den Motoren vorhanden sind und entsprechend bei ungleichmäßiger Belastung die Erhaltung des Gleichlaufes nicht mehr möglich ist.To achieve synchronization of several asynchronous motors, it is known that To connect secondary windings in parallel with each other. This circuit has However, the disadvantage is that the secondary voltage is very low when the motors slip slightly so that only low synchronizing forces are present between the motors and accordingly, in the case of uneven loading, the maintenance of synchronism is not possible more is possible.
Es ist bekannt, zur Beseitigung dieser Nachteile besondere Anordnungen vorzusehen, durch die eine Erhöhung der parallel geschalteten Sekundärspannungen der Motoren erzielt wird.It is known to provide special arrangements to eliminate these disadvantages, by increasing the secondary voltages of the motors connected in parallel is achieved.
Beispielsweise hat man vorgeschlagen, die parallel geschalteten Sekundärwicklungen der gleichlaufenden Motoren über WiderständeFor example, it has been proposed that the parallel-connected secondary windings of the synchronous motors via resistors
ao zu schalten. Allein bei derartigen Anordnungen treten beständige Verluste auf. An SteUe von Widerständen hat man auch bereits vorgeschlagen, Kommutattfrhintermaschinen, deren Spannung beliebig regelbar ist, in den Sekundärkreis der parallel arbeitenden Motoren einzuschalten. Derartige Maschinen, sind jedoch verhältnismäßig kompliziert und teuer, insbesondere dann, wenn man auch bei Leerlauf der Asynchronmotoren einen sicheren Gleichlauf erzielen will.ao to switch. With such arrangements alone there are constant losses. To SteUe of resistors has already been proposed, commutation rear machines, whose voltage can be regulated as required in the secondary circuit of the motors working in parallel to turn on. Such machines, however, are relatively complex and expensive, especially if you have one even when the asynchronous motors are idling want to achieve safe synchronization.
Es ist auch bereits vorgeschlagen wo'rden, an Stelle eines Anlaßmotors eine Umwandlung des Rotorstromes in Gleichstrom vorzunehmen. Diese -Drehstrom-Gleichstrom-Kaskaden entsprechenden Anordnungen weisen jedoch die oben geschilderten Nachteile noch in verstärktem Maße auf.It has already been suggested that to convert the rotor current into direct current instead of a starter motor. However, these three-phase direct current cascade arrangements still have the disadvantages outlined above to a greater extent.
Die Erfindung betrifft nun ein besonders einfaches Mittel zur Erzwingung des. Gleichlaufes bei allen Drehzahlen und insbesondere in der Nähe des Synchronismus. Nach der Erfindung wird bei einer Anordnung zur Erhaltung des Gleichlaufes von mehreren Asynchronmotoren, bei der die Sekundärwicklungen der Motoren an eine gemeinsame 4S Kommutatorhintermaschine angeschlossen sind, die Kommutatorhintermaschine als selbsterregter Phasenschieber mit einer Käfigwicklung im Ständer zur Herbeiführung der Selbsterregung ausgebildet. Solch selbsterregter 5< > Phasenschieber hat für die Erhaltung des Gleichlaufes vor allem den Vorteil, daß auch bei Leerlauf eine für die Synchronisierung ausreichende Spannung zur Verfügung steht, da die Selbsterregung des Phasenschiebers von der Belastung der Asynchronmotoren unabhängig ist. Trotzdem stellt aber ein solcher selbsterregter Phasenschieber eine Maschine einfachster Bauart dar; sie is{ außerdem in der Drehzahl vollständig unabhängigThe invention now relates to a particularly simple means of forcing synchronization at all speeds and in particular in the vicinity of synchronism. According to the invention, in an arrangement for maintaining the synchronism of several asynchronous motors, in which the secondary windings of the motors are connected to a common 4 S commutator back machine, the commutator back machine is designed as a self-excited phase shifter with a cage winding in the stator to bring about self-excitation. Such a self-excited 5 <> phase shifter has the main advantage for maintaining synchronism that sufficient voltage is available for synchronization even when idling, since the self-excitation of the phase shifter is independent of the load on the asynchronous motors. Nevertheless, such a self-excited phase shifter is a machine of the simplest design; it is also completely independent in terms of speed
*) Von dem Patentsucher ist als der Erfinder angegeben worden :*) The patent seeker stated as the inventor:
Dipl.-Ing. Jaroslav Kozisek in Berlin-Charlottenburg.Dipl.-Ing. Jaroslav Kozisek in Berlin-Charlottenburg.
und bedarf, wenn sie nicht mit einem der Asynmotoren gekuppelt ist, nur einer ganzand if it is not coupled to one of the asyn motors, only one is required
geringen Leistung zum Antrieb. · ■low power to drive. · ■
Die Zeichnung veranschaulicht die Erfindung an einem Beispiel, i, 2 und 3 sind Drehstrommotoren, die beispielsweise für den Antrieb einer Papiermaschine oder einer WaI-zenstraße dienen und die dementsprechend Gleichlauf aufweisen sollen. Die Sekundär-The drawing illustrates the invention using an example, i, 2 and 3 are Three-phase motors, for example for driving a paper machine or a roller line serve and which should accordingly have synchronism. The secondary
Jo wicklungen der Motoren sind dazu in Parallelschaltung an den Kommutator eines selbsterregten Phasenschiebers 4 angeschlossen. S ist der Antriebsmotor für den Phasenschieber. Die neue Schaltung hat den Vorteil, daß in vielen Fällen zur Erhaltung des Gleichlaufes keinerlei zusätzliche' Vorrichtungen und insbesondere keine zusätzlichen Kosten erforderlich sind, da die Motoren zur Verbesserung des Leistungsfaktors anJo windings of the motors are connected in parallel for this purpose connected to the commutator of a self-excited phase shifter 4. S is the drive motor for the phase shifter. The new circuit has the advantage that in many cases no additional devices are used to maintain synchronization and in particular no additional costs are required as the motors improve the power factor
so sich schon mit Phasenschiebern ausgerüstet werden müssen. Es wird sogar eine Verminderung der Kosten erzielt, da statt dreier Phasenschieber nur einer mit der dreifachen Leistung erforderlich ist. Der Phasenschieber besitzt im Ständer noch eine Käfigwicklung, die derart bemessen ist, daß der Phasenschieber sich selbst erregt und eine Phasenkompensierung der Asynchronmotoren auch bei Leerlauf herbeiführt. Der besondere Vorteil dieser Selbsterregung besteht, wie oben geschildert, darin, daß auch bei Leerlauf eine ausreichende synchronisierende Spannung zwischen den Motoren zur Verfügung steht.so have to be equipped with phase shifters. It even becomes a decrease the costs achieved, since instead of three phase shifters only one with threefold Performance is required. The phase shifter still has a cage winding in the stator, which is dimensioned such that the phase shifter excites itself and a phase compensation which induces asynchronous motors even when idling. The particular advantage of this self-excitement is how described above, in the fact that even when idling a sufficient synchronizing Voltage is available between the motors.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE571984T | 1930-06-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
DE571984C true DE571984C (en) | 1933-03-08 |
Family
ID=6568962
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1930571984D Expired DE571984C (en) | 1930-06-05 | 1930-06-05 | Arrangement for maintaining the synchronization of several asynchronous motors |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE571984C (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1162934B (en) * | 1958-03-14 | 1964-02-13 | Algemene Kunstzijdel Unie N V | Drive arrangement with at least two asynchronous motors operated in an electric shaft circuit |
DE1166343B (en) * | 1955-05-28 | 1964-03-26 | Algemene Kunstzijde Unie Nv | Drive arrangement with at least two asynchronous motors connected as electrical shafts with slip ring armature |
DE1220019B (en) * | 1962-08-27 | 1966-06-30 | Licentia Gmbh | Arrangement to prevent oscillations of an electric wave |
-
1930
- 1930-06-05 DE DE1930571984D patent/DE571984C/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1166343B (en) * | 1955-05-28 | 1964-03-26 | Algemene Kunstzijde Unie Nv | Drive arrangement with at least two asynchronous motors connected as electrical shafts with slip ring armature |
DE1162934B (en) * | 1958-03-14 | 1964-02-13 | Algemene Kunstzijdel Unie N V | Drive arrangement with at least two asynchronous motors operated in an electric shaft circuit |
DE1220019B (en) * | 1962-08-27 | 1966-06-30 | Licentia Gmbh | Arrangement to prevent oscillations of an electric wave |
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