DE903836C - Electric multi-motor drive for continuous roller lines - Google Patents

Electric multi-motor drive for continuous roller lines

Info

Publication number
DE903836C
DE903836C DEA9937D DEA0009937D DE903836C DE 903836 C DE903836 C DE 903836C DE A9937 D DEA9937 D DE A9937D DE A0009937 D DEA0009937 D DE A0009937D DE 903836 C DE903836 C DE 903836C
Authority
DE
Germany
Prior art keywords
motor
sub
speed
load
motor drive
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
DEA9937D
Other languages
German (de)
Inventor
Christian Nordmann
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.)
AEG AG
Original Assignee
AEG 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 AEG AG filed Critical AEG AG
Priority to DEA9937D priority Critical patent/DE903836C/en
Application granted granted Critical
Publication of DE903836C publication Critical patent/DE903836C/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B37/00Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/46Roll speed or drive motor control

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Multiple Motors (AREA)

Description

Elektrischer Mehrmotorenantrie-b für kontinuierliche Walzenstraßen Um bei kontinuierlichen 'Walzwerken mit Einzelantrieben durch Gleichstrommotoren einen Gleichlauf aller Motoren .auch schon beim Einführendes Walzgutes zu erzielen, wenn ein oder mehrere Motoren belastet sind, während die nachfolgenden Motoren noch leer laufen, ist es bekannt, außer dem Motor des ersten Walzgerüstes alle übrigen AZotoren mit herabgesetzter Leerlaufdrehzahl, die ihrer Vdllastdirehzahl entspricht, laufen zu lassen, so daß die Walzenumfangsgeschwindigkeit jedes Walzgerüstes in dem Augenblick des Wa;lzguteintritts stets genau der Geschwindigkeit des ankommenden Walzgutes ist und ein Zerren des Walzgutes beim Fassen desselben vermieden wird. Damit ein Drehzahlabfalil durch die eintretende Belastung nicht eintritt, wird das Feld des jeweils unter Last kommenden Motors entsprechend geschwächt, und zwar abhängig von seiner eigenen Stromaufnahme.Electric multi-motor drive for continuous rolling mills To with continuous' rolling mills with individual drives by DC motors to achieve synchronization of all motors, even when the rolling stock is imported, if one or more engines are loaded while the following engines are still run idle, it is known, except for the motor of the first roll stand all the rest A-motors with reduced idling speed, which corresponds to their Vdllastdirehzahl, to run, so that the peripheral speed of each roll stand in the moment the rolling stock enters, always exactly the speed of the incoming one Rolled stock is and a tugging of the rolled stock when grasping the same is avoided. So that a speed drop does not occur due to the occurring load, this is Field of the respective motor under load is weakened accordingly, depending on from its own power consumption.

Anstatt durch Feldschwächung wird nach der Erfindung bei Belastung der Motoren. die Erhaltung ihrer einmal eingestellten Drehzahl durch plötzliche Erhöhung der Ankerspannung erzwungen. Dies ist dann möglich, wenn jeder Motor eine eigene Kraftquelle erhält. Beispielsweise ist bei Verwendung von Einzeldynamos deren Feld zu verstärken oder bei Speisung durch Einzelgleichrichter die Erhöhung der Spannung mittels der Gittersteuerung vorzunehmen. Die plötzliche Spannungserhöhung muß auch in diesen Fällen abhängig von dem Anstieg der Stromaufnahme des zugehörigen Motors erfolgen.Instead of weakening the field, according to the invention, under load of the engines. the preservation of their set speed by sudden Forced to increase the armature voltage. This is possible if every motor has one receives its own source of strength. For example, when using individual dynamos, their To strengthen the field or, if fed by a single rectifier, to increase the Make tension using the grid control. The sudden increase in tension must also be dependent in these cases from the increase in current consumption of the associated motor.

Claims (1)

PATENTANSPRÜCHE: i. Elektrischer Mehrmotorenantrieb für kon tinuierliche Walzenstraßen, bei dem die Drehzahl der noch leer laufenden Motoren bereits vor Eintreten der Belastung von der Leerlaufdrehzahl auf die voraussichtliche Belastungsdrehzahl durch Feldverstärkung herabgesetzt und bei Eintreten der Belastung jedes einzelnen Teilmotors durch in Abhängigkeit von dem Belastungsstrom in Wirkung kommende Mittel ein Absinken der Drehzahl unter die bereits vorhandene Belastungsdrehzahl verhindert wird, dadurch gekennzeichnet, daß für Antriebe mit je einer besonderen Kraftquelle für jeden Teilmotor bei Eintreten der Belastung jedes Teilmotors dessen Ankerspannung in Abhängigkeit vom Belastungsstrom um den zur Aufrechterhalltung der vorherigen Drehzahl notwendigen Betrag erhöht wird. a. Mehrmotorenantrieb nach Anspruch i, bei dem jeder Teilmotor durch einen besonderen Dynamo gespeist wird, dadurch gekennzeichnet, däß in Abhängigkeit vom Belastungsstrom des Teilmotors das Feld des Dynamos verstärkt wird. 3. Mehrmotorenantrieb nach Anspruch i, bei dem jeder Teilmotor von einem besonderen Gleichrichter gespeist wird, dadurch gekennzeichnet, daß in Abhängigkeit vom Belastungsstrom des Teilmotors die Spannung des ihn speisenden Gleichrichters durch Gittersteuerung erhöht wird.PATENT CLAIMS: i. Electric multi-motor drive for continuous Roller mills, in which the speed of the still idling motors is already in front Occurrence of the load from the idle speed to the expected load speed reduced by field strengthening and when each individual is exposed to stress Part of the motor by means that come into effect as a function of the load current prevents the speed from falling below the existing load speed is, characterized in that for drives each with a special power source for each sub-motor when the load occurs, each sub-motor has its armature voltage depending on the load current to maintain the previous one Speed required amount is increased. a. Multi-motor drive according to claim i, in which each sub-motor is fed by a special dynamo, characterized in that that depending on the load current of the sub-motor, the field of the dynamo is strengthened will. 3. Multi-motor drive according to claim i, in which each sub-motor of a special one Rectifier is fed, characterized in that depending on the load current of the sub-motor the voltage of the rectifier feeding it through grid control is increased.
DEA9937D 1943-06-01 1943-06-01 Electric multi-motor drive for continuous roller lines Expired DE903836C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEA9937D DE903836C (en) 1943-06-01 1943-06-01 Electric multi-motor drive for continuous roller lines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA9937D DE903836C (en) 1943-06-01 1943-06-01 Electric multi-motor drive for continuous roller lines

Publications (1)

Publication Number Publication Date
DE903836C true DE903836C (en) 1954-02-11

Family

ID=6921912

Family Applications (1)

Application Number Title Priority Date Filing Date
DEA9937D Expired DE903836C (en) 1943-06-01 1943-06-01 Electric multi-motor drive for continuous roller lines

Country Status (1)

Country Link
DE (1) DE903836C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1201466B (en) * 1959-10-02 1965-09-23 Licentia Gmbh Synchronization device for the multi-motor drive of a continuous roller line or the like.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1201466B (en) * 1959-10-02 1965-09-23 Licentia Gmbh Synchronization device for the multi-motor drive of a continuous roller line or the like.

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