DE903836C - Electric multi-motor drive for continuous roller lines - Google Patents
Electric multi-motor drive for continuous roller linesInfo
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/46—Roll 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)
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)
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. |
-
1943
- 1943-06-01 DE DEA9937D patent/DE903836C/en not_active Expired
Cited By (1)
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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