AT72575B - Arrangement for short-circuit braking of DC motors. - Google Patents
Arrangement for short-circuit braking of DC motors.Info
- Publication number
- AT72575B AT72575B AT72575DA AT72575B AT 72575 B AT72575 B AT 72575B AT 72575D A AT72575D A AT 72575DA AT 72575 B AT72575 B AT 72575B
- Authority
- AT
- Austria
- Prior art keywords
- motors
- short
- arrangement
- circuit braking
- braking
- Prior art date
Links
Landscapes
- Stopping Of Electric Motors (AREA)
Description
<Desc/Clms Page number 1>
Anordnung zur Kurz8chlussbremsung von Gleichstrommotoren.
Bei der Kurzschlussbremsung von Gleichstrommotoren treten beim Übergang vom Motor-zum Generatorbetrieb häufig bedeutende Stromstösse auf. die um so grösser sind, je geringer der Bremswiderstand bemessen ist. Diese Stromstösse sind für den Kollektor der Maschine sehr schädlich, da, auch wenn Hilfspole vorhanden sind, sich das Kommttierungsfeld nicht schnell genug ausbilden kann.
Erfindungsgemäss erhalten die Hilfspole eine zusätzliche Erregerwicklung, die im Stromkreis des Bremswiderstandes liegt, so dass im Augenblick der Bremsung ein ausser- ordentlich starkes Kommutierungsfeld gebildet wird.
Die Figur zeigt ein Anwendungsbeispiel. Es bezeichnet A den Anker, B den zur Umschaltung (von Motorstellung I auf Generatorstellung II) dienenden Umschalter, C den Bremswiderstand, D die normale Hilfspolwicklung, E die den Gegenstand der Erfindung bildende zusätzliche Erregerwicklung. Die Feldwicklung der Maschine ist nicht dargestellt ; sie kann sowohl im Nebenschluss als auch fremd oder im Hauptschluss erregt sein. Der Bremswiderstand kann unter Umständen auch durch einen Kurzschluss ersetzt sein.
**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.
<Desc / Clms Page number 1>
Arrangement for short circuit braking of direct current motors.
In short-circuit braking of DC motors, significant current surges often occur during the transition from motor to generator operation. which are greater, the lower the braking resistor is dimensioned. These current surges are very damaging for the collector of the machine because, even if auxiliary poles are present, the commuting field cannot develop quickly enough.
According to the invention, the auxiliary poles are provided with an additional field winding which is located in the circuit of the braking resistor, so that an extraordinarily strong commutation field is formed at the moment of braking.
The figure shows an application example. It denotes A the armature, B the switch used for switching (from engine position I to generator position II), C the braking resistor, D the normal auxiliary pole winding, E the additional excitation winding forming the subject of the invention. The field winding of the machine is not shown; it can be excited in the shunt as well as strange or in the main circuit. Under certain circumstances, the braking resistor can also be replaced by a short circuit.
** WARNING ** End of DESC field may overlap beginning of CLMS **.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE72575X | 1914-06-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AT72575B true AT72575B (en) | 1916-10-25 |
Family
ID=5636191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT72575D AT72575B (en) | 1914-06-27 | 1915-06-01 | Arrangement for short-circuit braking of DC motors. |
Country Status (1)
| Country | Link |
|---|---|
| AT (1) | AT72575B (en) |
-
1915
- 1915-06-01 AT AT72575D patent/AT72575B/en active
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