DE448131C - Step switching device for single-sided grounded AC transformers, especially for regulating the motor voltage in electric locomotives - Google Patents

Step switching device for single-sided grounded AC transformers, especially for regulating the motor voltage in electric locomotives

Info

Publication number
DE448131C
DE448131C DEA47095D DEA0047095D DE448131C DE 448131 C DE448131 C DE 448131C DE A47095 D DEA47095 D DE A47095D DE A0047095 D DEA0047095 D DE A0047095D DE 448131 C DE448131 C DE 448131C
Authority
DE
Germany
Prior art keywords
transformers
regulating
switching device
grounded
auxiliary
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
DEA47095D
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.)
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 DE448131C publication Critical patent/DE448131C/en
Expired legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L9/00Electric propulsion with power supply external to the vehicle
    • B60L9/16Electric propulsion with power supply external to the vehicle using ac induction motors
    • B60L9/24Electric propulsion with power supply external to the vehicle using ac induction motors fed from ac supply lines
    • B60L9/26Electric propulsion with power supply external to the vehicle using ac induction motors fed from ac supply lines single-phase motors
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2200/00Type of vehicles
    • B60L2200/26Rail vehicles

Description

Stufenschaltvorrichtung für einseitig geerdete Wechselstromtransformatoren, insbesondere zum Regeln der Motorspannung bei elektrischen Lokomotiven. Es ist bei einseitig geerdeten Stufentransformatoren, wie sie zum Regeln der Motor-Spannung bei Einphasenlokomotiven verwendet werden, bekannt, zur Vermehrung der Stufenzahl einen Hilfstransformator anzuordnen, dessen Sekundärspannung einen. Bruchteil der Stufenspannung des Haupttransformators ausmacht und der bei jeder Stufe des letzteren so zugeschaltet werden kann, daß seine Spannung sich zu der Gesamtspannung hinzufügt oder sich von ihr abzieht. Um kleinere Ströme schalten zu müssen, hat man die Sekundärwicklung dieses Transformators dauernd in den Hauptstromkreis. eingeschaltet und die Zu- und Gegenschaltung bzw. Kurzschließung des Hilfstransformators auf der primären Oberspannungsseite vorgenommen. Ferner ist es bekannt, die Hauptstufen, die mittels Haupt- und Hilfsbürste an Gleitkontakten geschaltet werden, an dieser Stelle stromlos anzuschließen und zu unterbrechen, was mit Hilfe von Funkenschaltern geschieht, die mechanisch mit den Gleitbürsten verbunden sind und den Hauptstromkreis öffnen, bevor die zugehörige Gleitbürste den betreffenden Kontakt verlassen hat, und ihn schließen, bevor die Gleitbürste auf den betreffenden Kontakt aufgelaufen ist.Step switching device for single-sided earthed AC transformers, especially for regulating the motor voltage in electric locomotives. It is at Single-ended step transformers, such as those used to regulate the motor voltage be used in single-phase locomotives, known to increase the number of stages to arrange an auxiliary transformer, the secondary voltage of which is a. Fraction of Step voltage of the main transformer and that of each step of the latter can be switched on so that its voltage is added to the total voltage or withdraws from it. In order to have to switch smaller currents, you have the secondary winding this transformer is permanently in the main circuit. switched on and the and counter-circuit or short-circuiting of the auxiliary transformer on the primary Made high voltage side. It is also known, the main stages, which means Main and auxiliary brushes are switched to sliding contacts, at this point de-energized connect and interrupt what happens with the help of spark switches, which are mechanically connected to the sliding brushes and open the main circuit, before the associated sliding brush has left the relevant contact, and him close before the sliding brush has hit the relevant contact.

Man hat nun bisher den Hilfstransformator entweder zwischen Stufentransformator und Erde .oder zwischen Triebmotor und Erde oder schließlich zwischen Funkenschalter und Triebmotor eingereiht. Dann hat man im ersten Fall. den Nachteil, daß die Hilfsbetriebe, die an eine Teilspannung des Haupttransformators angeschlossen werden, entweder nicht geerdet werden können, und. doppelseitig anzuschließen sindoder,wenn man sie dennoch erdet, an einer um die _dopp,-elt"$e,1;undärspannung des Hilfstransformators veränderlichen spannung liegen. Im anderen Falle, wo der Hilfstransformator zwischen Motor und Erde liegt, muß der Motor von Erde isoliert sein und; wird auch bei; geöffneten Funkenschaltern nicht unbedingt völlig spannungslos. Dies trifft auch im letztgenannten Falle zu, wenn nämlich der Transformator zwischen Funkenschalter und Motor liegt.So far you have the auxiliary transformer either between the step transformer and earth. or between traction motor and earth or finally between spark switch and drive motor lined up. Then you have in the first case. the disadvantage that the auxiliaries, which are connected to a partial voltage of the main transformer, either not grounded can be, and. are to be connected on both sides or, if you can still earth it, at an undärvoltage of the auxiliary transformer around the _dopp, -elt "$ e, 1; variable voltage lie. In the other case where the auxiliary transformer is between Motor and earth, the motor must be isolated from earth and; is also used at; opened Spark switches do not necessarily have to be completely dead. This also applies to the latter It happens when the transformer is between the spark switch and the motor.

Nach der Erfindung wird daher die -Sekundärwicklung des Hilfstransformators zwischen Stufenschalter und Funkenschälter eingefügt, imd zwar zwischen die. Hauptgleitbürste und deren Funkenschalter, während die Hilfsgleitbürste des Stufenschalters über den von ihr bedienten überschaltwiderstand und den zugehörigen Funkerischalter am Motor liegt.According to the invention, therefore, the secondary winding of the auxiliary transformer inserted between tap changer and spark switch, although between the. Main sliding brush and their spark switch, while the auxiliary sliding brush of the tap changer is over the switching resistor operated by it and the associated radio operator switch on Engine is lying.

In der. Zeichnung ist die neue Schaltung schematisch dargestellt. Darin werden die Stufen I bis VI des, Haupttransformators a mittels der Hauptbürste g und der Hilfsbürste lt stromlos geschaltet. Die Hauptbürste g ist über. die Sekundärwicklung des primärseitig mittels Schalter r bis. 5 und überschaltwiderstandes f gesteuerten Hilfstränsforinators b mit dem Funkenschalter c verbunden, während die Hilfsgleitbürste 1a nur über den Hauptstufen-Überschaltwiderstand e an den Funkenschalter a! angeschlossen ist; die anderen Pole der beiden Funkenschalter c und d sind parallel an den Triebmotor m gelegt, dessen eine Klemme geerdet ist. Da die Schaltvorgänge sich von den bisher üblichen nicht unterscheiden und auch die Erfindung selbst nicht berühren, brauchen sie in diesem Zusammenhang nicht mehr erläutert zu werden.In the. Drawing the new circuit is shown schematically. In it, stages I to VI of the main transformer a are de-energized by means of the main brush g and the auxiliary brush lt. The main brush g is over. the secondary winding of the primary side by means of switch r to. 5 and switchover resistance f controlled auxiliary line transformer b is connected to the spark switch c, while the auxiliary sliding brush 1a is only connected to the spark switch a via the main stage switchover resistance e! connected; the other poles of the two spark switches c and d are connected in parallel to the drive motor m, one terminal of which is grounded. Since the switching operations do not differ from the hitherto customary ones and also do not affect the invention itself, they do not need to be explained in this context.

Claims (1)

PATENTANSPRUCH: Stufenschaltvorrichtung für einseitig geerdete Wechselstromtransformatoren, insbesondere zum Regeln der Motorspannung "bei elektrischen Lokomotiven, mit primärseitig zu- und gegengeschaltetem Hilfstransformator zur Erhöhung der Stufenzahl und zwangläufig gesteuerten Funkenschaltern zur Entlastung der beiden Gleit-. bürsten des Stufenschalters, dadurch gekennzeichnet, daß die Sekundärwicklung des Hilfstransformators zwischen der Hauptbürste des Stufenschalters und dem ihr zugeordneten, an den geerdeten Triebmotor angeschlossenen Funkenschalter eingefügt ist, während die Hilfsbürste des Stufenschalters in bekannter Weise über einen überschaltwiderstand und den ihr zugeordneten zweiten Funkenschalter unmittelbar zum Triebmotor führt. PATENT CLAIM: Step switching device for AC transformers grounded on one side, in particular for regulating the motor voltage "in electric locomotives, with an auxiliary transformer connected on the primary and opposite sides to increase the number of steps and positively controlled spark switches to relieve the two sliding brushes of the step switch, characterized in that the secondary winding of the auxiliary transformer is inserted between the main brush of the tap changer and its associated spark switch connected to the grounded drive motor, while the auxiliary brush of the tap changer leads directly to the drive motor in a known manner via a switchover resistor and its associated second spark switch.
DEA47095D 1926-02-12 1926-02-23 Step switching device for single-sided grounded AC transformers, especially for regulating the motor voltage in electric locomotives Expired DE448131C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH448131X 1926-02-12

Publications (1)

Publication Number Publication Date
DE448131C true DE448131C (en) 1927-08-05

Family

ID=4515387

Family Applications (1)

Application Number Title Priority Date Filing Date
DEA47095D Expired DE448131C (en) 1926-02-12 1926-02-23 Step switching device for single-sided grounded AC transformers, especially for regulating the motor voltage in electric locomotives

Country Status (1)

Country Link
DE (1) DE448131C (en)

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