DE201767C - - Google Patents
Info
- Publication number
- DE201767C DE201767C DENDAT201767D DE201767DA DE201767C DE 201767 C DE201767 C DE 201767C DE NDAT201767 D DENDAT201767 D DE NDAT201767D DE 201767D A DE201767D A DE 201767DA DE 201767 C DE201767 C DE 201767C
- Authority
- DE
- Germany
- Prior art keywords
- resistance
- short
- winding
- phase
- circuit winding
- 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.)
- Active
Links
- 238000004804 winding Methods 0.000 claims description 7
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 claims description 2
- 229910052797 bismuth Inorganic materials 0.000 claims description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 241000189705 Dunedin group Species 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000001105 regulatory Effects 0.000 description 1
- 201000009032 substance abuse Diseases 0.000 description 1
- 230000003313 weakening Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/02—Windings characterised by the conductor material
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacture Of Motors, Generators (AREA)
Description
KAISERLICHESIMPERIAL
PATENTAMT.PATENT OFFICE.
PATENTSCHRIFTPATENT LETTERING
- M 201767 KLASSE 21 d. GRUPPE- M 201767 CLASS 21 d. GROUP
JAKOB SCHÜRCH in BRUCHSAL i. B. und ADOLF HIMMEL in TÜBINGEN.JAKOB SCHÜRCH in BRUCHSAL i. B. and ADOLF HIMMEL in TÜBINGEN.
Der Gegenstand vorliegender Erfindung bezieht sich auf eine neuartige Kurzschlußwicklung, welche sowohl für Ein- wie für Mehrphasenmotoren anwendbar ist. Bisher wurden die bekannten reinen Kurzschlußwicklungen auf Motoren bis zu einer bestimmten Leistung angewendet, über welche hinauszugehen aus betriebstechnischen Gründen nicht angezeigt war, da -beim Anlaufen einer solchen Maschine infolge des hohen Anlaufstromes im Netze starke Spannungsschwankungen verursacht werden. Bei größeren Motoren mußte deshalb zum Anlassen stets eine Phasenwicklung verwendet werden.The subject matter of the present invention relates to a novel short-circuit winding, which can be used for both single-phase and multi-phase motors. So far, the known pure short-circuit windings applied to engines up to a certain power, beyond which to go was not indicated for operational reasons, because when starting a such a machine due to the high starting current in the network, strong voltage fluctuations caused. A phase winding therefore always had to be used for starting larger engines.
Für einen hohen Wirkungsgrad des Drehstrommotors ist es nun einerseits Bedingung, daß der Widerstand der Kurzschlußwicklung möglichst gering ist, um die Schlüpfung und dementsprechend den Effektverlust im Anker, welcher der Schlüpf ung proportional ist, möglichst niederzuhalten. Andererseits aber benötigen Motoren mit geringem Widerstand in der Kurzschlußwicklung eine sehr hohe Anlauf Stromstärke, wodurch das Anlaufmoment infolge der großen Streuung verschlechtert wird. Um nun diese Mißstände zu beseitigen und die beiden Gegensätze auszugleichen, ist eine selbsttätige Widerstandsänderung in der Kurzschlußwicklung vorgesehen. For a high efficiency of the three-phase motor it is now on the one hand a condition, that the resistance of the short-circuit winding is as low as possible to the slip and accordingly the loss of effect in the anchor, which is proportional to the slip, to hold down as much as possible. On the other hand, however, need motors with low resistance a very high starting current in the short-circuit winding, which reduces the starting torque is deteriorated due to the large dispersion. In order to remedy these abuses and to balance the two opposites, an automatic change in resistance in the short-circuit winding is provided.
Gemäß vorliegender Erfindung wird dies dadurch erzielt, daß an Stelle von Kupferoder Eisenstäben Wismut verwendet wird, dessen magnetischer Widerstand sich im magnetischen Feld bekanntlich ändert. Beim Einschalten ist nun der Widerstand ein Maximum, weil das Feld dann die größte Dichte aufweist, während der Widerstand bei normaler Tourenzahl entsprechend der Schwächung des Feldes durch G.E.M.K. abnimmt. Ein mechanisches Regulieren des Widerstandes, wie dies bisher z. B. durch besondere Vorrichtungen erzielt wurde, ist nicht mehr erforderlich. Es findet also die gesamte Regulierung des Widerstandes selbsttätig statt, ohne daß irgendwelche Reguliereinrichtungen erforderlich wären.According to the present invention, this is achieved in that instead of copper or Iron rods bismuth is used, the magnetic resistance of which is known to change in the magnetic field. At the Switching on, the resistance is now a maximum, because the field is then the largest Has density, while the resistance at normal number of revolutions corresponds to the Weakening of the field by G.E.M.K. decreases. A mechanical regulation of the Resistance, as previously z. B. was achieved by special devices is not necessary anymore. So it finds the entire regulation of the resistance automatically instead of without the need for any regulating devices.
Claims (1)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE201767C true DE201767C (en) |
Family
ID=464295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT201767D Active DE201767C (en) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE201767C (en) |
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0
- DE DENDAT201767D patent/DE201767C/de active Active
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