DE478041C - Switching arrangement for even load distribution on mechanically coupled asynchronous motors - Google Patents

Switching arrangement for even load distribution on mechanically coupled asynchronous motors

Info

Publication number
DE478041C
DE478041C DEA47568D DEA0047568D DE478041C DE 478041 C DE478041 C DE 478041C DE A47568 D DEA47568 D DE A47568D DE A0047568 D DEA0047568 D DE A0047568D DE 478041 C DE478041 C DE 478041C
Authority
DE
Germany
Prior art keywords
switching arrangement
mechanically coupled
asynchronous motors
rotor
machines
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
Application number
DEA47568D
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AEG AG
Original Assignee
AEG AG
Publication date
Priority to DEA47568D priority Critical patent/DE478041C/en
Application granted granted Critical
Publication of DE478041C publication Critical patent/DE478041C/en
Expired legal-status Critical Current

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
    • H02K17/36—Cascade arrangement of an asynchronous motor with another dynamo-electric motor or converter with another asynchronous induction motor

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Eletrric Generators (AREA)

Description

Schaltanordnung zur gleichmäßigen Lastverteilung auf mechanisch gekuppelte Asynchronmotoren Mechanisch gekuppelte und an das gleiche Netz angeschlossene Asynchronmotoren belasten sich bekanntlich ungleich, wenn ihre Läuferwiderstände entweder ungleich sind oder wenn den Läufern zur Kompensierung bzw. Drehzahlregelung durch Drehstromkollektormaschinen oder Frequenzwandler zusätzliche EMKe zugeführt werden, die in Größe und Richtung nicht voll übereinstimmen.Switching arrangement for even load distribution on mechanically coupled Asynchronous motors Mechanically coupled asynchronous motors connected to the same network It is well known that they load each other unequally if their rotor resistances are either unequal or if the rotors are used for compensation or speed control by three-phase collector machines or frequency converters additional EMFs are supplied, which in size and direction do not fully match.

Zur Beseitigung dieser Nachteile werden erfindungsgemäß die Motoren mechanisch so miteinander gekuppelt, daß der Winkel zwischen den Ständerwicklungsachsen gleich oder nahezu gleich dem Winkel zwischen den Läuferwicklungsachsen ist und zusammengehörige Phasen der Läuferwicklungen derart hintereinanderliegen, daß die in ihnen- induzierten EMKe gleichgerichtet sind. Bei Verwendung z. B. von zwei Motoren wird dies dadurch erreicht, daß die Anfänge der Phasen vom Motor x mit den Enden der entsprechenden Phasen vom Motor 2 verbunden werden.According to the invention, the motors are used to eliminate these disadvantages mechanically coupled together so that the angle between the stator winding axes is equal to or almost equal to the angle between the rotor winding axes and Corresponding phases of the rotor windings lie one behind the other in such a way that the in them-induced EMFs are rectified. When using z. B. from two engines this is achieved in that the beginnings of the phases of the motor x with the ends of the corresponding phases of motor 2 are connected.

Die Abb. z zeigt ein Erfindungsbeispiel für zwei mechanisch gekuppelte Asynchronmotoren, auf deren Welle gleichzeitig eine Drehstromkollektormaschine angebracht ist. s1 und s2 sind die Ständerwicklungen der Asynchronmaschinen, die vom Netz n gespeist werden; h, 1, sind die zugehörigen Läuferwicklungen, die beide hintereinanderliegen. Außerdem liegt in Reihe mit den beiden Läuferwicklungen die Kommutatorwicklung eines auf der gleichen Welle sitzenden, durch einen Transformator t gespeisten dreiphasigen Frequenzwandlers. Zum Anlassen werden die Läuferwicklungen durch den Umschalter h auf den gemeinsamen Anlaßwiderstand a und nach Erreichung der synchronen Drehzahl auf die Erregermaschine d geschaltet.Fig. Z shows an example of the invention for two mechanically coupled asynchronous motors, on whose shaft a three-phase collector machine is attached at the same time. s1 and s2 are the stator windings of the asynchronous machines that are fed from network n; h, 1, are the associated rotor windings, which are both one behind the other. In addition, the commutator winding of a three-phase frequency converter which is seated on the same shaft and fed by a transformer t is connected in series with the two rotor windings. For starting, the rotor windings are switched to the common starting resistor a by the changeover switch h and, after the synchronous speed has been reached, to the exciter d.

Bei der Ausführung nach Abb. 2 der Zeichnung ist der Anlasser a so gelegt, daß der Umschalter h fortfällt. Außerdem ist der Erregertransformator t für die Erregermaschine d weggelassen.In the embodiment according to Fig. 2 of the drawing, the starter a is placed so that the switch h is omitted. In addition, the excitation transformer t for the excitation machine d is omitted.

An Stelle einer einzigen Drehstromkollektormaschine oder nur eines Frequenzwandlers können, wie Abb. 3 erkennen läßt, auch zwei derartige Hilfsmaschinen vorgesehen sein, von denen die zweite am entgegengesetzten Ende des Läufers 1, angeschlossen werden kann. In. diesem Fall können beide Drehstromkollektormaschinen oder Frequenzwandler dl, d2 durch einen gemeinsamen, am Netz liegenden Erregertransformator t in Parallelschaltung gespeist werden.Instead of a single three-phase collector machine or just a frequency converter, two such auxiliary machines can be provided, as can be seen in FIG. 3, the second of which can be connected to the opposite end of the rotor 1. In. In this case, both three-phase collector machines or frequency converters d1, d2 can be fed in parallel by a common exciter transformer t connected to the network.

Abb. q. stellt den einfachsten Fall zweier Asynchronmotoren mit hintereinandergeschalteten Läuferwicklungen ohne Drebstromerregermaschinen dar.Fig.q. represents the simplest case of two asynchronous motors with one behind the other Rotor windings without three-phase exciter.

Claims (2)

PATENTANSPRÜCHE: z. Schaltanordnung zur gleichmäßigen Lastverteilung auf mechanisch gekuppelte Asynchronmotoren, dadurch gekennzeichnet, daß die Ständerwicklungsachsen den gleichen oder nahezu gleichen Winkel miteinander einschließen wie die Läuferwicklungsachsen und zusammengehörige Phasen der Läuferwicklungen so hintereinanderliegen, daß die elektromotorischen Kräfte in den zusammengehörigen Phasenwicklungen der Läufer gleich oder nahezu gleichgerichtet sind. PATENT CLAIMS: e.g. Switching arrangement for even load distribution on mechanically coupled asynchronous motors, characterized in that the stator winding axes Include the same or almost the same angle with one another as the rotor winding axes and associated phases of the rotor windings are so one behind the other that the electromotive forces in the associated phase windings of the rotor or are almost in the same direction. 2. Schaltanordnung nach Anspruch x bei Verwendung von Drehstromkollektormaschinen oder Frequenzwandlern als Hilfskommutatormaschinen zur Kompensierung oder Drehzahlregelung der Asynchronmotoren, dadurch gekennzeichnet, daß die Kommutatorwicklungen einer oder zweier Hilfskommutatormaschinen mit den Läuferwicklungen der Asynchronmaschinen in Reihe geschaltet sind.2. Switching arrangement according to claim x when using of three-phase collector machines or frequency converters as auxiliary commutator machines for compensation or speed control of asynchronous motors, characterized in that the commutator windings of one or two auxiliary commutator machines with the The rotor windings of the asynchronous machines are connected in series.
DEA47568D Switching arrangement for even load distribution on mechanically coupled asynchronous motors Expired DE478041C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEA47568D DE478041C (en) Switching arrangement for even load distribution on mechanically coupled asynchronous motors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA47568D DE478041C (en) Switching arrangement for even load distribution on mechanically coupled asynchronous motors

Publications (1)

Publication Number Publication Date
DE478041C true DE478041C (en) 1929-06-17

Family

ID=6935847

Family Applications (1)

Application Number Title Priority Date Filing Date
DEA47568D Expired DE478041C (en) Switching arrangement for even load distribution on mechanically coupled asynchronous motors

Country Status (1)

Country Link
DE (1) DE478041C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1018964B (en) * 1952-05-30 1957-11-07 Siemens Ag Arrangement for influencing the proportional power consumption of several asynchronous motors fed from a power source, in particular squirrel cage armature motors

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1018964B (en) * 1952-05-30 1957-11-07 Siemens Ag Arrangement for influencing the proportional power consumption of several asynchronous motors fed from a power source, in particular squirrel cage armature motors

Similar Documents

Publication Publication Date Title
DE478041C (en) Switching arrangement for even load distribution on mechanically coupled asynchronous motors
DE639230C (en) Arrangement for feeding frequency-controlled induction motors with strongly fluctuating loads from an alternating current network of constant voltage and frequency
DE893073C (en) Alternator
DE483906C (en) Switching arrangement for even load distribution on asynchronous motors
DE636833C (en) Single phase induction motor with magnetic shunt on the stator poles
DE1801065A1 (en) Method for testing idling asynchronous machines, preferably with short-circuit rotors, under full load losses
DE440067C (en) Cascade connection of two mechanically coupled induction machines, the secondary part of the second machine being connected to a commutator rear machine
DE192050C (en)
DE395274C (en) Arrangement for the regulation of asynchronous machines in which the collector rear machine is excited in its rotor circuit by a synchronous machine
DE591326C (en) Arrangement for converting single or multi-phase alternating current into direct current or vice versa
DE212593C (en)
DE622232C (en) Rotating frequency and phase number converter
DE657211C (en) Arrangement for generating or receiving a direct current of constant strength
DE263695C (en)
DE480875C (en) Arrangement for phase number converters according to the Arno principle, in which an additional machine with an opposing rotating field is used to compensate for the voltage asymmetry in the secondary part of the converter
DE92672C (en)
DE443519C (en) Arrangement for compensation of the armature reaction of commutator machines
DE167382C (en)
DE676749C (en) Asynchronous motor with internal cascade connection
AT100409B (en) Method and device for arbitrary power transmission between two alternating current networks that are not rigidly interconnected by means of two coupled synchronous machines.
DE468416C (en) Synchronous cascade for converting three-phase current of one number of periods into single-phase current of another number of periods, consisting of an asynchronous motor and a mechanically coupled synchronous machine
DE199553C (en)
DE519522C (en) Single-phase asynchronous machine (motor or generator or reactive power machine) in connection with an externally excited commutator rear machine
DE380428C (en) Single or multi-phase AC synchronous motor starting as an asynchronous motor
AT46301B (en) Device for starting and compensating synchronous AC machines.