DE859041C - Device for achieving a controlled variable for generators that drops in the event of overcurrent or overvoltage - Google Patents

Device for achieving a controlled variable for generators that drops in the event of overcurrent or overvoltage

Info

Publication number
DE859041C
DE859041C DES21572A DES0021572A DE859041C DE 859041 C DE859041 C DE 859041C DE S21572 A DES21572 A DE S21572A DE S0021572 A DES0021572 A DE S0021572A DE 859041 C DE859041 C DE 859041C
Authority
DE
Germany
Prior art keywords
voltage
current
overcurrent
generators
overvoltage
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
DES21572A
Other languages
German (de)
Inventor
Siegfried Dr Franck
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 AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Priority to DES21572A priority Critical patent/DE859041C/en
Application granted granted Critical
Publication of DE859041C publication Critical patent/DE859041C/en
Expired legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02PCONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P9/00Arrangements for controlling electric generators for the purpose of obtaining a desired output
    • H02P9/14Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field
    • H02P9/16Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field due to variation of ohmic resistance in field circuit, using resistances switched in or out of circuit step by step
    • H02P9/18Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field due to variation of ohmic resistance in field circuit, using resistances switched in or out of circuit step by step the switching being caused by a servomotor, measuring instrument, or relay

Landscapes

  • Emergency Protection Circuit Devices (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)

Description

Vorrichtung zur Erzielung einer bei Überstrom oder Überspannung abfallenden Regelgröße für Generatoren Die Erfindung bezieht sich auf Regelvorrichtungen, insbesondere Eilregler, für Generatoren, und zwar auf jene Art von Reglern, die ein aufwärts und ein abwärts regelndes Organ enthalten. Sie hat die Aufgabe, die Spannung oder den Strom zwar in dem normalen Strom- bzw. Spannungsbereich konstant zu halten, aber -bei Überstrom bzw. Überspannung einen starken Abfall der Spannung bzw. des Stromes zu erzwingen, um beispielsweise Überlastungen oder Überladungen von Batterien zu vermeiden.Device for achieving a drop in the event of an overcurrent or overvoltage Controlled Variable for Generators The invention relates to control devices, in particular Speed regulators, for generators, on the kind of regulators that have an upward and contain a downward regulator. It has the task of tension or to keep the current constant in the normal current or voltage range, but - in the event of overcurrent or overvoltage, a sharp drop in voltage or des To force current, for example to overload or overcharge batteries to avoid.

Es ist bekannt, zu diesem Zweck einen vom Strom abhängigen Regeleinflug schneller als proportional mit dem Strom wachsen zu lassen und dadurch ein zu hohes Ansteigen des Stromes zu vermeiden. Bei einer bekannten Anordnung hat man deshalb ein entsprechend ausgebildetes mechanisches Kupplungsglied verwendet, mit dessen Verstellung eine auf das vom Strom beeinflußte Reglerglied einwirkende mechanische Gegenkraft nach einem nichtlinearen Gesetz zunimmt. Die von dem Strom auf das betreffende Reglerglied ausgeübte Stellkraft ist dabei dem Strom praktisch proportional.It is known to use a current-dependent control entry for this purpose to let it grow faster than proportionally with the current and therefore too high Avoid increasing the current. In a known arrangement, therefore, one has a correspondingly designed mechanical coupling member is used with which Adjustment of a mechanical acting on the regulator element influenced by the current Counterforce increases according to a non-linear law. The one from the stream to the one in question The actuating force exerted by the controller element is practically proportional to the current.

Bei einer anderen bekannten Einrichtung zur selbsttätigen Spannungsreglung von Stromquellen, bei der zur Erzeugung einer oberhalb einer gewissen Stromgrenze abfallenden Spannungsstromkennlinie auf den Regler außer der Spannung der Stromquelle noch eine zusätzliche, von dem Belastungsstrom nichtlinear abhängige Spannung einwirkt, setzt sich die von dem Belastungsstrom abhängige Spannung aus zwei einander entgegenwirkenden Komponenten zusammen, von denen die eine linear, die andere nach einer Magnetisierungskennlinie mit dem Belastungsstrom ansteigt. Eine solche Anordnung benötigt außer einem Stromwandler zwei in Reihe geschaltete Transformatoren; von denen der eine mit, der andere ohne Sättigung arbeitet. Diese Transformatoren sind der Meßwicklung des Spannungsreglers vorgeschaltet.In another known device for automatic voltage regulation of power sources in which to generate a current above a certain limit falling voltage current characteristic on the controller other than the voltage of the power source an additional voltage, which is non-linearly dependent on the load current, acts, sets the of the load current dependent voltage from two opposing components together, one of which is linear, the one others increases with the load current according to a magnetization characteristic. One In addition to a current transformer, such an arrangement requires two transformers connected in series; one of which works with, the other without saturation. These transformers are connected upstream of the measuring winding of the voltage regulator.

Erfindungsgemäß erhält man bei den eingangs gekennzeichneten Reglern dadurch eine wesentlich einfachere Anordnung, daß parallel zu einem Vorwiderstand der Meßwicklungen der Organe ein im negativen Sinn vom Betriebsstrom oder -Spannung beeinflußter Widerstand, insbesondere ein vorn Betriebsstrom oder -Spannung beheizter Heißleiter, liegt oder parallel zu den' der Organe ein im positiven Sinn vom Betriebsstrom oder -Spannung beeinflußter Widerstand geschaltet ist.According to the invention, the regulators identified at the outset are obtained thereby a much simpler arrangement that parallel to a series resistor the measuring windings of the organs in the negative sense of the operating current or voltage influenced resistance, especially one heated from the operating current or voltage NTC thermistor, lies or parallel to the 'of the organs in the positive sense of the operating current or voltage-influenced resistor is connected.

Die Erfindung wird an Hand der in der Zeichnung dargestellten Beispiele näher erläutert.The invention is illustrated by the examples shown in the drawing explained in more detail.

Die Spannung eines Generators i (Fig. i) mit einer Feldwicklung 2 und regelbarem Widerstand 3 im Feldkreis soll während des normalen Betriebsstromes konstant gehalten werden, Bereich A (Fig. 2), in der in Abhängigkeit vom Betriebsstrom T ,die Generatorspannung U aufgetragen ist; bei Überstrom, Bereich B, dagegen soll die Spannung stark abfallen.The voltage of a generator i (Fig. I) with a field winding 2 and adjustable resistor 3 in the field circuit should be kept constant during the normal operating current, area A (Fig. 2), in which the generator voltage U is plotted as a function of the operating current T ; in the case of overcurrent, area B, on the other hand, the voltage should drop sharply.

Der Kontaktarm ¢ des regelbaren Feldwiderstandes 3 wird durch einen Motors verstellt, dessen Anker einerseits an die Mitte eines am hTetz N liegenden Spannungsteilers 6, andererseits über Steuerkontakte 70, 8o an die Netzleiter anschtießbar ist. Die Kontakte werden durch Meßwicklungen 7, 8 von Spannungsrelais, die an der Netzspannung liegen, betätigt. 70 ist ein Ruhekontakt, 8o ein Arbeitskontakt. Zu einem Vorwiderstand io für die Meßwicklungen der Relais 7, 8 ist ein Heißleiter i i parallel geschaltet, der eine vom Betriebsstrom durchflossene Heizwicklung 12 hat.The contact arm ¢ of the variable field resistor 3 is moved by a motor, the armature is anschtießbar to the power head of a hand at the center of a vessel at the N hTetz voltage divider 6, on the other hand via control contacts 70, 8o. The contacts are actuated by measuring windings 7, 8 of voltage relays which are connected to the mains voltage. 70 is a normally closed contact, 8o a normally open contact. A thermistor ii is connected in parallel with a series resistor io for the measuring windings of the relays 7, 8 and has a heating winding 12 through which the operating current flows.

Die Anordnung arbeitet folgendermaßen: In dem Strombereich A (Fig. 2) wird die Spannung wie folgt konstant gehalten. Ist sie zu niedrig, dann läßt das Relais 7 seinen Kontakt 70 fallen. Er schaltet den Stellmotor 5 auf Drehung im Pfeilsinn. Der Feldwiderstand 3 wird verkleinert, die Spannung steigt, bis das Relais 7 wieder den Kontakt 70 öffnet: Ist die Spannung zu hoch, dann schließt das Relais 8 den Kontakt 8o und schaltet dadurch den Motor 5 auf Drehung entgegen dem Pfeilsinn. Der Feldwiderstand 3 wird vergrößert, die Spannung fällt, bis das Relais 8 den Kontakt 8o wieder öffnet. Dieses Spiel wiederholt sich in rascher Folge.The arrangement works as follows: In the current range A (Fig. 2), the voltage is kept constant as follows. If it is too low, the relay 7 drops its contact 70. He switches the servomotor 5 to rotation in the direction of the arrow. The field resistance 3 is reduced, the voltage increases until the relay 7 opens the contact 70 again: If the voltage is too high, the relay 8 closes the contact 8o and thereby switches the motor 5 to rotate in the opposite direction of the arrow. The field resistance 3 is increased, the voltage drops until the relay 8 opens the contact 8o again. This game repeats itself in quick succession.

Im Strombereich A (Fig. 2), in dem der Heißleiter nur wenig erwärmt wird, macht sich seine Wirkung praktisch kaum bemerkbar. Im Strombereich B dagegen nimmt der Widerstand des Heißleiters ii mit wachsendem überstrom ab.- Die. Meßwicklungen der Relais 7, 8 erhalten deshalb mehr Strom und die Relais sprechen schon bei niedrigeren Spannungswerten an. Infolgedessen sinkt im Strombereich B die eingeregelte Spannung um so mehr, je höher der Überstrom ist.In the current range A (Fig. 2), in which the thermistor is only slightly heated its effect is hardly noticeable. In contrast, in current range B. the resistance of the thermistor ii decreases with increasing overcurrent. Measuring windings the relays 7, 8 therefore receive more current and the relays speak at lower levels Voltage values. As a result, the regulated voltage drops in current range B. the more the higher the overcurrent is.

Claims (1)

PATENTANSPRUCH: Vorrichtung zur Erzielung einer bei Überstrom oder Überspannung stark abfallenden Regelgröße (Spannung bzw. Strom) für Generatoren, die von einer ein aufwärts und abwärts regelndes Organ enthaltenden Regelanordnung, insbesondere Eilregler, selbsttätig auf konstante Spannung bzw. konstanten Strom geregelt werden, dadurch gekennzeichnet, daß parallel zu einem Vorwiderstand (io, Fig. i) ,der Meßwicklungen der Organe (7, 8) ein im negativen Sinn vom Betriebsstrom oder -Spannung beeinflußter Widerstand, insbesondere ein vom Betriebsstrom oder -Spannung (Heizwicklung 12) beheizter Heißleiter (ii) liegt oder parallel zu den Meßwicklungen der Organe ein im positiven Sinn vom Betriebsstrom oder -Spannung beeinflußter Widerstand geschaltet ist. Angezogene Druckschriften: Deutsche Patentschrift Nr. 696 3o9.PATENT CLAIM: Device for achieving an overcurrent or Overvoltage sharply falling controlled variable (voltage or current) for generators, the regulation arrangement containing an upward and downward regulating organ, especially high-speed regulator, automatically on constant voltage or constant current controlled, characterized in that parallel to a series resistor (io, Fig. I), the measuring windings of the organs (7, 8) a in the negative sense of the operating current or -voltage influenced resistance, in particular one of the operating current or -Voltage (heating coil 12) heated thermistor (ii) lies or parallel to the Measuring windings of the organs in the positive sense of the operating current or voltage influenced resistance is switched. Referred publications: German patent specification No. 696 3o9.
DES21572A 1948-10-26 1948-10-26 Device for achieving a controlled variable for generators that drops in the event of overcurrent or overvoltage Expired DE859041C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DES21572A DE859041C (en) 1948-10-26 1948-10-26 Device for achieving a controlled variable for generators that drops in the event of overcurrent or overvoltage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES21572A DE859041C (en) 1948-10-26 1948-10-26 Device for achieving a controlled variable for generators that drops in the event of overcurrent or overvoltage

Publications (1)

Publication Number Publication Date
DE859041C true DE859041C (en) 1952-12-11

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1006942B (en) * 1954-05-20 1957-04-25 Siemens Ag Device for regulating the voltage of medium-frequency generators, which are used in particular to feed inductive heating devices
DE1076794B (en) * 1956-04-21 1960-03-03 Pintsch Bamag Ag Circuit arrangement for the automatic current limitation of a generator, in particular a vehicle generator
DE1139571B (en) * 1953-10-26 1962-11-15 Elisabeth Graner Automatic voltage regulator for AC and three-phase machines working in parallel on a network to regulate load-dependent voltage values

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE696309C (en) * 1935-09-29 1940-09-18 Siemens Schuckertwerke Akt Ges Device for automatic voltage regulation of current sources

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE696309C (en) * 1935-09-29 1940-09-18 Siemens Schuckertwerke Akt Ges Device for automatic voltage regulation of current sources

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1139571B (en) * 1953-10-26 1962-11-15 Elisabeth Graner Automatic voltage regulator for AC and three-phase machines working in parallel on a network to regulate load-dependent voltage values
DE1006942B (en) * 1954-05-20 1957-04-25 Siemens Ag Device for regulating the voltage of medium-frequency generators, which are used in particular to feed inductive heating devices
DE1076794B (en) * 1956-04-21 1960-03-03 Pintsch Bamag Ag Circuit arrangement for the automatic current limitation of a generator, in particular a vehicle generator

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