DE957142C - Arrangement for series connection of medium-frequency generators - Google Patents

Arrangement for series connection of medium-frequency generators

Info

Publication number
DE957142C
DE957142C DEA22564A DEA0022564A DE957142C DE 957142 C DE957142 C DE 957142C DE A22564 A DEA22564 A DE A22564A DE A0022564 A DEA0022564 A DE A0022564A DE 957142 C DE957142 C DE 957142C
Authority
DE
Germany
Prior art keywords
arrangement
medium
series connection
generators
frequency generators
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
DEA22564A
Other languages
German (de)
Inventor
Dipl-Ing Paul Schlenker
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.)
BBC Brown Boveri France SA
Original Assignee
BBC Brown Boveri France SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by BBC Brown Boveri France SA filed Critical BBC Brown Boveri France SA
Application granted granted Critical
Publication of DE957142C publication Critical patent/DE957142C/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K19/00Synchronous motors or generators
    • H02K19/16Synchronous generators
    • H02K19/36Structural association of synchronous generators with auxiliary electric devices influencing the characteristic of the generator or controlling the generator, e.g. with impedances or switches

Landscapes

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

Description

Für die Speisung von Induktionsschmelzöfen und induktiven Heizvorrichtungen werden vielfach zwei oder mehrere Generatoren parallel geschaltet an Stelle nur eines. entsprechend größeren Generators. Bei Mittelfrequenzanlagen ergeben sich dadurch Ersparnisse im Preis und im Raumbedarf.For feeding induction melting furnaces and inductive heating devices often two or more generators are connected in parallel instead of only one. correspondingly larger generator. In the case of medium-frequency systems, thereby savings in price and space requirements.

Für größere Leistungen sind auch größere Betriebsspannungen erwünscht, was aber eine unerwünschte Komplikation der Generatorenwicklungen zur Folge hätte, falls man: aus diesem Grunde große Windungszahlen anwenden wollte. In der Anordnung hoher Windungszahlen ist man aber sehr beschränkt, da man aus konstruktiven Gründen pro Nut nicht mehr als einen Leiter anwendet.Larger operating voltages are also required for higher outputs, but this would result in an undesirable complication of the generator windings, if one wanted to use large numbers of turns for this reason. In the arrangement With a high number of turns, however, you are very limited, as you can do this for design reasons does not use more than one conductor per slot.

Bei parallel geschalteten. Generatoren ist die Synchronisierung relativ einfach, da die hierfür erforderlichen Ausgleichsströme über die beiden Maschinen mit relativ niederer Impedanz fließen. Will man zur Spannungserhöhung die Maschinen in Reihe schalten, so sind besondere Vorkehrungen zu treffen, um ein synchronisierendes Moment zu erzeugen.When connected in parallel. Synchronization is relative to generators easy, because the equalizing currents required for this over the two machines flow with a relatively low impedance. If you want the machines to increase the voltage connect in series, so special precautions must be taken to ensure a synchronizing Generate moment.

Die Erfindung betrifft eine Anordnung zur Reihenschaltung von Mittelfrequenz-Generatoren, durch die auch eine Synchronisierung bei dieser Schaltung ermöglicht wird. Sie besteht darin, daß ein Spartransformator mit mindestens einer Anzapfung vorgesehen ist, an dessen einzelnen Wicklungsabschnitten je ein Generator angeschlossen ist, und der Belastungskreis an die so in Reihe geschalteten Generatoren angeschlossen wird.The invention relates to an arrangement for series connection of medium-frequency generators, which also enables synchronization in this circuit. she consists in that an autotransformer with at least one tap is provided, a generator is connected to each of its individual winding sections, and the load circuit is connected to the generators connected in series.

Die Erfindung wird an Hand von Ausführungsbeispielen näher erläutert. Die Fig. I bis 3 zeigen die Reihenschaltung von zwei und drei Generatoren, In der Fig. I ist der Spartransformator T durch die Anzapfung A in zwei Wicklungen W1 und W2 unterteilt. An die Wicklung W1 ist der Generator G1 und an die Wicklung W2 ist der Generator G2 angeschlossen. An den äußeren Enden der Wicklungen W1 und W2 ist der Belastungskreis B an den ganzen Transformator angeschlossen. Durch den Spartransformator sind die Generatoren bezüglich der Ausgleichsströme parallel und bezüglich der Spannung in Reihe geschaltet. Beim Synchronisieren entstehen synchronisierende Ausgleichsströme, die über den Spartransformator laufen. Nach erfolgter Synchronisierung verschwinden die synchronisierenden Ausgleichsströme, und die Transformatorwicklungen weisen nur noch geringe Strombelastung, zur Hauptsache den Magnetisierungsstrom, auf. Dementsprechend kann der Spartransformator klein dimensioniert sein.The invention is explained in more detail using exemplary embodiments. Figs. I to 3 show the series connection of two and three generators, In the Fig. I is the autotransformer T through the tap A in two windings W1 and W2 divided. Generator G1 is connected to winding W1 and W2 is connected to winding the generator G2 connected. At the outer ends of the windings W1 and W2 is the load circuit B is connected to the whole transformer. Through the autotransformer the generators are parallel with regard to the equalizing currents and with regard to the voltage connected in series. When synchronizing, synchronizing equalizing currents arise, which run through the autotransformer. Disappear after synchronization the synchronizing equalizing currents, and the transformer windings have only a low current load, mainly the magnetizing current. Accordingly the autotransformer can be made small.

Es können natürlich auch drei oder mehr Generatoren auf diese Weise in Reihe geschaltet werden. In Fig. 2 ist das Zusammenschalten von drei Generatoren gezeigt. Jeder Generator G1, G2, G3 liegt an je einer Teilwicklung W1, W2, W3. Der Verbraucher ist an die Gesamtzahl der Windungen angeschlossen.There can of course be three or more generators in this way can be connected in series. In Fig. 2 is the interconnection of three generators shown. Each generator G1, G2, G3 is connected to a partial winding W1, W2, W3. Of the Load is connected to the total number of turns.

Der Transformator kann gemäß Fig. 3 zusätzlich als veränderbarer Anzapftransformator zur genaueren Anpassung der Generatorspannung an die Verbraucherspannung ausgebildet sein.According to FIG. 3, the transformer can also be used as a variable tap transformer designed for more precise adaptation of the generator voltage to the consumer voltage be.

Claims (1)

PATENTANSPRÜCHE: I. Anordnung zur Reihenschaltung von Mittelfrequenz-Generatorm, dadurch gekennzeichnet, daß ein Spartransformator mit mindestens einer Anzapfung vorgesehen ist, an dessen einzelnen Wicklungsabschnitten je ein Generator angeschlossen ist, und daß der Belastungskreis, an die so in Reihe geschalteten Generatoren angeschlossen. ist. z: Anordnung nach Anspruch i, dadurch gekennzeichnet, da,ß der Transformator zusätzliche Anzapfungen aufweist, an. die der Belastungskrens angeschlossen ist.PATENT CLAIMS: I. Arrangement for series connection of medium-frequency generators, characterized in that an autotransformer with at least one tap is provided, each of which has a generator connected to its individual winding sections and that the load circuit is connected to the generators connected in series. is. z: Arrangement according to claim i, characterized in that, ß the transformer has additional taps. which is affiliated with the loading crane.
DEA22564A 1955-04-14 1955-04-28 Arrangement for series connection of medium-frequency generators Expired DE957142C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH957142X 1955-04-14

Publications (1)

Publication Number Publication Date
DE957142C true DE957142C (en) 1957-01-31

Family

ID=4550352

Family Applications (1)

Application Number Title Priority Date Filing Date
DEA22564A Expired DE957142C (en) 1955-04-14 1955-04-28 Arrangement for series connection of medium-frequency generators

Country Status (1)

Country Link
DE (1) DE957142C (en)

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