AT37380B - Device for self-regulation of direct current machines. - Google Patents

Device for self-regulation of direct current machines.

Info

Publication number
AT37380B
AT37380B AT37380DA AT37380B AT 37380 B AT37380 B AT 37380B AT 37380D A AT37380D A AT 37380DA AT 37380 B AT37380 B AT 37380B
Authority
AT
Austria
Prior art keywords
voltage
regulation
self
direct current
current machines
Prior art date
Application number
Other languages
German (de)
Original Assignee
Felten & Guilleaume Lahmeyerwe
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
Priority claimed from DE1905202572D external-priority patent/DE202572C/de
Application filed by Felten & Guilleaume Lahmeyerwe filed Critical Felten & Guilleaume Lahmeyerwe
Application granted granted Critical
Publication of AT37380B publication Critical patent/AT37380B/en

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Description

  

   <Desc/Clms Page number 1> 
 



  Einrichtung zur Selbstregelung von Gleichstrommaschinen. 



   Gemäss der Erfindung wird eine Selbstregelung von Gleichstrommaschinen im Sinne der Aufrechterhaltung gleicher oder begrenzter Spannung dadurch bewirkt, dass die Gleich-   strommaschine   mit ungefähr in der Neutralzone der Ankerspannung liegenden   Hilfsbürsten   versehen wird, durch welche eine elektromotorische Kraft abgegrenzt wird, die der Erregerspannung der Maschine entgegengeschaltet wird, so dass bei abnehmender Umdrehungszahl der Maschine das Erregerfeld verstärkt und bei zunehmender Umdrehungszahl geschwächt wird. Die regelnde (Hilfs)-elektromotorische Kraft liegt also dann in Reihe mit der Feldwicklung und der die eigentliche Erregerspannung abgebenden Spannungsquelle.

   Letztere kann zweckmässig die der Klemmenspannung der Maschine parallel geschaltete Akkumulatorenbatterie und ganz oder teilweise identisch sein mit der an die Hilfsbürsten angeschlossenen Spannungsquelle. 



   Bei dieser besonders einfachen Schaltung würde die Einschaltung der   Hilfsbürsten   in die Erregung ohne besondere Vorschaltwiderstände oder andere Schutzvorkehrungen ein Kurzschliessen des Kollektors zwischen einer   Hauptbürste   und einer   Hilfsbürstp   bewirken. 



  Man wird also zweckmässig einen zweiten Kollektor anwenden, der in Reihe mit der Erregerwicklung geschaltet ist und eine elektromotorische Kraft liefert, die derjenigen der Klemmenspannung der Maschine entgegengesetzt gerichtet ist. 



   Bei Abnahme der Drehzahl wird die vom zweiten (Hilfs)-Kollektor erzeugte gegenelektromotorische Kraft kleiner und somit die Erregung und die Spannung der Maschine grösser und umgekehrt, so dass praktisch konstante Spannung auch bei wechselnder Drehzahl erreicht wird. 



   In der Zeichnung ist ein   Ausführungsbeispiel   des Erfindungsgegenstandes schematisch dargestellt. 



   Auf dem an die Arbeitswicklung des Ankers   angeschlosseben Kollektor   schleifen nur   die Arbeitsbürsten   a. Die Hilfsbürsten b schleifen auf einem zweiten Kollektor   c,   welcher zu einer besonderen   Ankerwicllung   gehört, und sind in Reihe mit der   Nebenschlussfelù-     wicklung/geschaltet,   und zwar so, dass die am Kollektor c abgegrenzte Spannung der
Klemmenspannung der Maschine entgegengerichtet ist. 



   PATENT-ANSPRÜCHE : 
1. Einrichtung zur   Selbstregelung von Gleichstrommaschinen   durch   eine Hilfsspannung     weiche   ungefähr in der Neutralzone der Ankerspannung liegenden Hilfsbürsten entnommen wird, dadurch gekennzeichnet, dass diese   Hitfsspannung   der Erregerspannung der Maschine entgegengeschaltet wird, so dass bei abnehmender Drehzahl das Erregerfeld verstärkt und   be@ zunehmender Drehzahl geschwächt wird.   

**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.



   <Desc / Clms Page number 1>
 



  Device for self-regulation of direct current machines.



   According to the invention, self-regulation of direct current machines in the sense of maintaining the same or limited voltage is effected by providing the direct current machine with auxiliary brushes located approximately in the neutral zone of the armature voltage, by means of which an electromotive force is delimited which counteracts the excitation voltage of the machine so that with decreasing number of revolutions of the machine the excitation field is strengthened and with increasing number of revolutions weakened. The regulating (auxiliary) electromotive force is then in series with the field winding and the voltage source emitting the actual excitation voltage.

   The latter can expediently be the accumulator battery connected in parallel to the terminal voltage of the machine and completely or partially identical to the voltage source connected to the auxiliary brushes.



   With this particularly simple circuit, switching on the auxiliary brushes in the excitation would cause a short-circuit of the collector between a main brush and an auxiliary brush without special series resistors or other protective measures.



  It is therefore expedient to use a second collector which is connected in series with the excitation winding and which supplies an electromotive force which is directed in the opposite direction to that of the terminal voltage of the machine.



   When the speed decreases, the counter-electromotive force generated by the second (auxiliary) collector decreases and thus the excitation and voltage of the machine increase and vice versa, so that practically constant voltage is achieved even with changing speed.



   An exemplary embodiment of the subject matter of the invention is shown schematically in the drawing.



   On the collector connected to the working winding of the armature, only the working brushes a. The auxiliary brushes b drag on a second collector c, which belongs to a special armature winding, and are connected in series with the shunt winding / in such a way that the voltage of the
Terminal voltage of the machine is opposite.



   PATENT CLAIMS:
1. Device for self-regulation of DC machines by means of an auxiliary voltage soft auxiliary brushes lying approximately in the neutral zone of the armature voltage, characterized in that this auxiliary voltage is switched against the excitation voltage of the machine, so that with decreasing speed the excitation field is strengthened and with increasing speed it is weakened .

** WARNING ** End of DESC field may overlap beginning of CLMS **.

 

Claims (1)

2. Ausführungsform der Einrichtung nach Anspruch I, dadurch gekennzeichnet, dass die Hilfsspannung einer zweiten Ankerwicklung mit besonderem Kollektor entnommen wird. der in Reihe mit der Erregerwicklung liegt. EMI1.1 **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. 2. Embodiment of the device according to claim I, characterized in that the auxiliary voltage is taken from a second armature winding with a special collector. which is in series with the excitation winding. EMI1.1 ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT37380D 1905-04-28 1908-10-26 Device for self-regulation of direct current machines. AT37380B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1905202572D DE202572C (en) 1905-04-28

Publications (1)

Publication Number Publication Date
AT37380B true AT37380B (en) 1909-05-25

Family

ID=5772161

Family Applications (1)

Application Number Title Priority Date Filing Date
AT37380D AT37380B (en) 1905-04-28 1908-10-26 Device for self-regulation of direct current machines.

Country Status (1)

Country Link
AT (1) AT37380B (en)

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