DE507933C - Arrangement for supplying slip frequency leading stator excitation windings on commutator rear machines with a voltage proportional to the slip in order to cancel the inductive voltage drop in the excitation winding - Google Patents

Arrangement for supplying slip frequency leading stator excitation windings on commutator rear machines with a voltage proportional to the slip in order to cancel the inductive voltage drop in the excitation winding

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Publication number
DE507933C
DE507933C DES79896D DES0079896D DE507933C DE 507933 C DE507933 C DE 507933C DE S79896 D DES79896 D DE S79896D DE S0079896 D DES0079896 D DE S0079896D DE 507933 C DE507933 C DE 507933C
Authority
DE
Germany
Prior art keywords
slip
voltage drop
excitation winding
arrangement
cancel
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
DES79896D
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.)
Siemens Schuckertwerke AG
Siemens AG
Original Assignee
Siemens Schuckertwerke AG
Siemens AG
Publication date
Priority to DES79896D priority Critical patent/DE507933C/en
Application granted granted Critical
Publication of DE507933C publication Critical patent/DE507933C/en
Expired legal-status Critical Current

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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

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

Description

An Kommutatorhintermaschinen beliebiger Bau- und Antriebsart, die zwecks Drehzahlregelung oder Phasenkompensierung in den Sekundärstromkreis von Asynchronmaschinen eingeschaltet sind, kann die Erregerwicklung im Ständer angeordnet sein, so daß ihr Strom Schlupffrequenz besitzt. Für die Speisung dieser Erregerwicklung ist es bekannt, in Hintereinanderschaltung einen vom Netz gespeistenOn commutator rear machines of any design and drive type that are used for speed control or phase compensation switched on in the secondary circuit of asynchronous machines are, the excitation winding can be arranged in the stator so that its current has a slip frequency. For feeding this Excitation winding is known to be connected in series with one powered by the network

ίο Frequenzwandler und einen von den Schleifringen der asynchronen Vordermaschine gespeisten, Schlupffrequenz führenden Transformator vorzusehen. Die Anordnung ist derart eingestellt, daß der Frequenzwandler den Ohmschen Spannungsabfall in der Erregerwicklung der Hintermaschine aufhebt, die Spannung des Transformators den induktiven. Es hat sich nun gezeigt, daß bei dieser Anordnung Schwankungen in der Belastung der- asynchronen Vordermaschine den Regelvorgang in unerwünschter Weise beeinflussen. Dies rührt davon her, daß die Spannung des Transformators, da dieser an die Schleifringe der Asynchronmaschine angeschlossen ist, in ihrer Größe und in ihrer Phase durch den dem Belastungsstrom proportionalen Ohmschen Spannungsabfall in der Sekundärwicklung der Asynchronmaschine beeinflußt wird, so daß sie namentlich in der Nähe des Synchronismus eine starke Abweichung von der vorgeschriebenen Größe und Phase zeigt. Infolgedessen hebt die Spannung des Transformators auch den induktiven Spannungsabfall in der Erregerwicklung der Kommutatorhintermaschine nicht genau auf, so daß der Regelvorgang gestört wird.ίο frequency converter and one of the slip rings the asynchronous front machine fed, slip frequency leading transformer to be provided. The arrangement is set in such a way that the frequency converter is ohmic The voltage drop in the field winding of the rear machine cancels the voltage of the Transformer the inductive. It has now been shown that fluctuations in this arrangement in the load of the asynchronous front machine the control process in undesirable Influence way. This is because the voltage of the transformer is because of this is connected to the slip rings of the asynchronous machine, in their size and in their Phase through the ohmic voltage drop proportional to the load current in the Secondary winding of the asynchronous machine is influenced, so that they are named in the Near synchronism there is a large deviation from the prescribed size and phase shows. As a result, the voltage of the transformer also increases the inductive voltage drop in the excitation winding of the commutator rear machine is not exactly on, so that the Control process is disturbed.

Dieser Nachteil wird bei einer Anordnung nach der Erfindung dadurch vermieden, daß die Erregerwicklung im Ständer der Kommutatorhintermaschine zur Aufhebung ihres induktiven Spannungsabfalles von einer Hilfswicklung im Sekundärteil der asynchronen Vordermaschine gespeist wird. Die Spannungen dieser Wicklungen sind vom sekundären Ohmschen Spannungsabfall des BelastungsstromesThis disadvantage is avoided in an arrangement according to the invention in that the excitation winding in the stator of the commutator rear machine to cancel its inductive Voltage drop from an auxiliary winding in the secondary part of the asynchronous front machine is fed. The voltages of these windings depend on the secondary ohmic voltage drop of the load current

unabhängig, so daß auch die störenden Nebenerscheinungen vermieden werden.independent, so that the annoying side effects are avoided.

Die Zeichnung zeigt ein Ausführungsbeispiel der Erfindung. 1 ist die asynchrone Vordermaschine, 2 die Kommutatorhintermaschine mit der Kompensationswicklung 3 und der Erregerwicklung 4. Diese wird in Hintereinanderschaltung von dem vom Netz gespeisten Frequenzwandler 5 und von dem Regeltransformator 6 gespeist. Der Transformator 6 liefert die zur Deckung des induktiven Spannungsabfalles erforderliche Spannung. Der Transformator 6 ist an Hilfsschleifringe 7 angeschlossen, die mit einer Hilfswicklung 8 im Sekundärteil der Asynchronmaschine ι verbunden sind. 9 ist die sekundäre Hauptwicklung der Maschine 1. Wie bereits erwähnt, kann statt der Hilfswicklung 8 auch eine mit der Maschine 1 gekuppelte Hilfsasynchronmaschine vorgesehen sein, deren Ständer an das Netz angeschlossen ist und deren Läuferwicklung die Erregerwicklung 4 speist. Selbstverständlich kann die Anordnung auch zur Speisung der Erregerwicklung einer Hilfskommutatorhintermaschine benutzt werden, die ihrerseits wiederum die Erregung für die Hauptkommutatorhintermaschine liefert.The drawing shows an embodiment of the invention. 1 is the front asynchronous machine, 2 the commutator rear machine with the compensation winding 3 and the excitation winding 4. This is connected in series by the frequency converter fed by the network 5 and fed by the regulating transformer 6. The transformer 6 supplies the to cover the inductive voltage drop required voltage. The transformer 6 is connected to auxiliary slip rings 7 with an auxiliary winding 8 in the secondary part of the asynchronous machine ι are connected. 9 is the secondary Main winding of the machine 1. As already mentioned, instead of the auxiliary winding 8 also an auxiliary asynchronous machine coupled to machine 1 be provided whose stator is connected to the network and whose rotor winding feeds the field winding 4. Of course, the arrangement can also be used to supply the excitation winding of an auxiliary commutator rear machine are used, which in turn provide the excitation for the main commutator rear machine supplies.

Claims (1)

Patentanspruch :Claim: Anordnung zur Speisung von Schlupffrequenz führenden Ständererregerwicklungen an Kommutatorhintermaschinen mit einer dem Schlupf proportionalen Spannung zwecks Aufhebung des induktiven Spannungsabfalles in der Erregerwicklung, während der Ohmsche Spannungsabfall in der Erregerwicklung durch eine zweite, von außen zugeführte Spannung (insbesondere über einen Frequenzwandler) aufgehoben wird, dadurch gekennzeichnet, daß eine Hilfswicklungim Sekundärteil der asynchronen Vordermaschine vorgesehen ist, die die Ständererregerwicklung zweckmäßig über einen regelbaren Transformator speist.Arrangement for feeding stator exciter windings with slip frequency on commutator rear machines with a voltage proportional to the slip in order to cancel the inductive voltage drop in the excitation winding, during the Ohmic voltage drop in the excitation winding due to a second, externally supplied Voltage (in particular via a frequency converter) is canceled, characterized in that an auxiliary winding im Secondary part of the asynchronous front machine is provided, which has the stator excitation winding appropriately feeds via a controllable transformer. *) Von dem Patenlsucher sind als die Erfinder angegeben worden: Dr.-Ing. Michael Lhvschit\ und Dipl.-Ing. Jaroslav Ko\isek in Berlin-Charlottenburg.*) The inventors named by the sponsor seeker: Dr.-Ing. Michael Lhvschit \ and Dipl.-Ing. Jaroslav Ko \ isek in Berlin-Charlottenburg. Hierzu 1 Blatt Zeichnungen1 sheet of drawings
DES79896D Arrangement for supplying slip frequency leading stator excitation windings on commutator rear machines with a voltage proportional to the slip in order to cancel the inductive voltage drop in the excitation winding Expired DE507933C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DES79896D DE507933C (en) Arrangement for supplying slip frequency leading stator excitation windings on commutator rear machines with a voltage proportional to the slip in order to cancel the inductive voltage drop in the excitation winding

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES79896D DE507933C (en) Arrangement for supplying slip frequency leading stator excitation windings on commutator rear machines with a voltage proportional to the slip in order to cancel the inductive voltage drop in the excitation winding

Publications (1)

Publication Number Publication Date
DE507933C true DE507933C (en) 1930-09-22

Family

ID=7508523

Family Applications (1)

Application Number Title Priority Date Filing Date
DES79896D Expired DE507933C (en) Arrangement for supplying slip frequency leading stator excitation windings on commutator rear machines with a voltage proportional to the slip in order to cancel the inductive voltage drop in the excitation winding

Country Status (1)

Country Link
DE (1) DE507933C (en)

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