DE400593C - Method for switching over and rapidly de-energizing the excitation winding of electrical machines - Google Patents
Method for switching over and rapidly de-energizing the excitation winding of electrical machinesInfo
- Publication number
- DE400593C DE400593C DES58682D DES0058682D DE400593C DE 400593 C DE400593 C DE 400593C DE S58682 D DES58682 D DE S58682D DE S0058682 D DES0058682 D DE S0058682D DE 400593 C DE400593 C DE 400593C
- Authority
- DE
- Germany
- Prior art keywords
- electrical machines
- excitation winding
- energizing
- rapidly
- switching over
- 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
- 238000004804 winding Methods 0.000 title claims description 13
- 238000000034 method Methods 0.000 title claims description 5
- 230000005284 excitation Effects 0.000 title description 10
- 230000004075 alteration Effects 0.000 claims description 2
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
- H02P9/10—Control effected upon generator excitation circuit to reduce harmful effects of overloads or transients, e.g. sudden application of load, sudden removal of load, sudden change of load
- H02P9/12—Control effected upon generator excitation circuit to reduce harmful effects of overloads or transients, e.g. sudden application of load, sudden removal of load, sudden change of load for demagnetising; for reducing effects of remanence; for preventing pole reversal
- H02P9/123—Control effected upon generator excitation circuit to reduce harmful effects of overloads or transients, e.g. sudden application of load, sudden removal of load, sudden change of load for demagnetising; for reducing effects of remanence; for preventing pole reversal for demagnetising; for reducing effects of remanence
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Synchronous Machinery (AREA)
Description
Verfahren zum Umschalten und schnellen Aberregen der Erregerwicklung elektrischer Maschinen. Die Erfindung betrifft ein Verfahren zum Umschalten der Erregerwicklung elektrischer Maschinen. Sie besteht darin, daß die Erregerwicklung mittels eines doppelpoligen Umschalters, der zwischen ihr und dem Anker liegt, über Widerstand ohne Unterbrechung umgeschaltet wird. Dabei wird zwischen die Mittelkontakte des doppelpoligen Umschalters, derzwischen Erregerwicklung und Anker liegt, und eine Gruppe der Umschaltkbntakte Widerstand gelegt. Dieses Verfahren soll insbesondere zum Umschalten der Erregerwicklung von elektrischen Maschinen verwendet werden, bei denen es daraßf ankommt, die Erregung möglichst schnell zu unterdrücken und insbesondere den remanenten Magnetismus schnell zu beseitigen, wie es im Patent. 209¢2o, IC. 21d, näher beschrieben ist. Method for switching over and rapidly de-energizing the excitation winding of electrical machines. The invention relates to a method for switching over the field winding of electrical machines. It consists in the fact that the excitation winding is switched over without interruption by means of a double-pole changeover switch, which is located between it and the armature. A resistor is placed between the center contacts of the double-pole changeover switch, which is located between the excitation winding and the armature, and a group of the changeover contacts. This method is intended to be used in particular for switching the excitation winding of electrical machines where it is important to suppress the excitation as quickly as possible and, in particular, to quickly eliminate the remanent magnetism, as described in the patent. 209 ¢ 2o, IC. 21d, is described in more detail.
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt. Abb. i zeigt eine Anlage, die aus einem Drehstromgenerator besteht, von dem nur der gleichstromgespeiste Läufer r schematisch dargestellt ist, und aus einem Nebenschlußgenerator mit dem Anker a und der Erregerwicklung e. Zwischen dem Anker a und der Wicklung e liegt der Umschalter u, dessen Mittelkontakte ml und m2 mit der Erregerwicklung e verbunden sind. Zwischen diesen Kontakten und den mit dem Anker a verbundenen Umschaltkontakten c,, und c2 liegen nach der Erfindung die Widerstände .w.1, und w2. Außerdem ist noch ein Regelwiderstand g im Stromkreis der Erregerwicklung vorgesehen. Abb.2, 3 und 4 veranschaulichen die Wirkungsweise des Umschalters. In Abb.2 verbinden die Schaltmesser die Kontakte ml und m2 mit den Kontakten cl und c8. Der Strom fließt zum allergrößten Teil durch die Schaltmesser. In Abb.3 stehen die Schaltmesser außer Berührung mit den 'Kontakten des Umschalters. Der Strom fließt in derselben Richtung wie in Abb. i über die Widerstände. In Abb. 4 verbinden die Schaltmesser die Mittelkontakte m1 und m, mit der Kontaktgruppe k1 und kQ, und der Strom fließt der Erregerwicklung in umgekehrter Richtung zu. Diese kann also sehr schnell umgeschaltet werden, und die Spannung des Generators kann sehr rasch und restlos vernichtet werden. Dementsprechend wird auch die Erregung der elektrischen Maschine, . die von dem Nebenschlußgenerator gespeist wird, schnell beseitigt.An embodiment of the invention is shown in the drawing. Fig. I shows a system that consists of a three-phase generator, of which only the DC-fed rotor r is shown schematically, and a shunt generator with the armature a and the excitation winding e. Between the armature a and the winding e there is the changeover switch u, whose center contacts ml and m2 are connected to the excitation winding e. According to the invention, the resistors .w.1 and w2 are located between these contacts and the changeover contacts c ,, and c2 connected to the armature a. In addition, a variable resistor g is provided in the circuit of the field winding. Fig. 2, 3 and 4 illustrate how the changeover switch works. In Fig.2, the switch blades connect contacts ml and m2 to contacts cl and c8. Most of the current flows through the switch blades. In Fig.3 the switch blades are out of contact with the contacts of the switch. The current flows in the same direction as in Fig. I through the resistors. In Fig. 4, the switch blades connect the center contacts m1 and m to the contact group k1 and kQ, and the current flows to the field winding in the opposite direction. This can be switched over very quickly, and the voltage of the generator can be destroyed very quickly and completely. The excitation of the electrical machine,. fed by the shunt generator is quickly eliminated.
Die rasche Beseitigung der Erregung ist von großem Wert für Generatoren, die von Wasserkraft angetrieben werden. Diese werden dadurch bei Versagen tles Reglers bei unzulässiger Drehzahlerhöhung gegen Spannungs- und Stromerhöhungen geschützt.The rapid elimination of excitation is of great value to generators, that are powered by hydropower. This will be the case if the controller fails Protected against voltage and current increases in the event of an impermissible increase in speed.
Die Erfindung kann aber auch noch in anderen Fällen, so z. B. beim schnellen Aberregen von Einankerumformern, mit Vorteil verwendet werden.The invention can also be used in other cases, such. B. at rapid aberration of single armature converters, can be used with advantage.
Der doppelpolige Umschalter kann irgendeine Form besitzen, so kann er z. B. auch als Wälzenschalter ausgebildet sein.The double pole changeover switch can be of any shape, so can he z. B. also be designed as a roller switch.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DES58682D DE400593C (en) | 1922-01-24 | 1922-01-24 | Method for switching over and rapidly de-energizing the excitation winding of electrical machines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DES58682D DE400593C (en) | 1922-01-24 | 1922-01-24 | Method for switching over and rapidly de-energizing the excitation winding of electrical machines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE400593C true DE400593C (en) | 1924-08-21 |
Family
ID=7492720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DES58682D Expired DE400593C (en) | 1922-01-24 | 1922-01-24 | Method for switching over and rapidly de-energizing the excitation winding of electrical machines |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE400593C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE946827C (en) * | 1940-11-10 | 1956-08-09 | Siemens Ag | Arrangement and method for fast de-energization of electrical machines |
-
1922
- 1922-01-24 DE DES58682D patent/DE400593C/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE946827C (en) * | 1940-11-10 | 1956-08-09 | Siemens Ag | Arrangement and method for fast de-energization of electrical machines |
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