DE921464C - High frequency generator - Google Patents
High frequency generatorInfo
- Publication number
- DE921464C DE921464C DEA16083A DEA0016083A DE921464C DE 921464 C DE921464 C DE 921464C DE A16083 A DEA16083 A DE A16083A DE A0016083 A DEA0016083 A DE A0016083A DE 921464 C DE921464 C DE 921464C
- Authority
- DE
- Germany
- Prior art keywords
- high frequency
- frequency generator
- groove
- per
- partitions
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K19/00—Synchronous motors or generators
- H02K19/16—Synchronous generators
- H02K19/22—Synchronous generators having windings each turn of which co-operates alternately with poles of opposite polarity, e.g. heteropolar generators
- H02K19/24—Synchronous generators having windings each turn of which co-operates alternately with poles of opposite polarity, e.g. heteropolar generators with variable-reluctance soft-iron rotors without winding
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Induction Machinery (AREA)
Description
Hochfrequenzerzeuger Elektrische Wechselstromerzeuger für Hochfrequenz, besonders die zum Betrieb von Wirbelstromöfen für Schmelzung und verwandte metallurgische Zwecke, werden im allgemeinen mit nur einer Wicklungsnut pro Hochfrequenzpol ausgeführt, was die höchste Spannung pro Windung ergibt. Falls solche Maschinen für hohe Tourenzahlen (3ooo pro Minute oder höher) und mäßige Frequenzen (etwa 5oo pro Sekunde) ausgeführt werden, wird jedoch die Nutenteilung ziemlich groß, und da andererseits ein volles Ausnutzen der Maschine eine gewisse Stromdichte pro Zentimeter des Luftspaltumfanges voraussetzt, wird auch das Stromvolumen in jeder Nut größer als bei den bisher ausgeführten kleineren oder verhältnismäßig langsam laufenden Maschinen. Dies verursacht Schwierigkeiten bei der Ableitung der in den Nutenleitern erzeugten Wärme, weil diese bei einer gewissen Stromdichte in den Leitern dem Querschnitt der Nut proportional ist, während die Wärmeableitung nur etwa proportional dem Nutenumfang ist.High frequency generator Electric alternating current generator for high frequency, especially those for the operation of eddy current furnaces for smelting and related metallurgical Purposes, are generally carried out with only one winding slot per high-frequency pole, which gives the highest voltage per turn. If such machines for high numbers of revolutions (3ooo per minute or higher) and moderate frequencies (about 500 per second) however, the groove pitch becomes quite large, and there on the other hand a full one The machine utilizes a certain current density per centimeter of the circumference of the air gap assuming, the current volume in each groove is greater than in the previously executed smaller or relatively slow running machines. This causes trouble in the dissipation of the heat generated in the slot conductors, because this is a certain current density in the conductors is proportional to the cross-section of the groove, while the heat dissipation is only roughly proportional to the circumference of the groove.
Gemäß der Erfindung werden in der Nut zur Verbesserung der Wärmeableitung eine oder mehrere Zwischenwände angeordnet, die aus einem Stück mit dem Blechpaket bestehen und aus dem Blechrücken herausragen, aber etwas vor dem äußeren Ende der Nut enden, so daß sie keinen wesentlichen Einfluß auf den Streufluß oder die anderen magnetischen Verhältnisse ausüben. Die einzige Aufgabe dieser Zwischenwände ist nämlich eine Vergrößerung der wärmeableitenden Berührungsfläche zwischen der Wicklung und dem Blechkern, und um die Wärme zu diesem an den letzteren wirksam ableiten zu können, müssen die Zwischenwände aus einem Stück mit dem Blechrücken bestehen.According to the invention are in the groove to improve heat dissipation arranged one or more partitions, which are made in one piece with the laminated core and protrude from the back of the sheet, but a little before the outer end of the End groove so that they do not have a significant effect on the leakage flux or the other exercise magnetic conditions. The only job of these partitions is namely, an increase in the heat-dissipating contact area between the winding and the sheet metal core, and in order to effectively dissipate the heat to this to the latter To be able to do so, the partitions must be made of one piece with the sheet metal back.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE921464X | 1951-07-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
DE921464C true DE921464C (en) | 1954-12-20 |
Family
ID=20388302
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEA16083A Expired DE921464C (en) | 1951-07-14 | 1952-06-28 | High frequency generator |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE921464C (en) |
-
1952
- 1952-06-28 DE DEA16083A patent/DE921464C/en not_active Expired
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