CH132139A - Group of inductors without iron core with parallel axes for single and multi-phase systems. - Google Patents
Group of inductors without iron core with parallel axes for single and multi-phase systems.Info
- Publication number
- CH132139A CH132139A CH132139DA CH132139A CH 132139 A CH132139 A CH 132139A CH 132139D A CH132139D A CH 132139DA CH 132139 A CH132139 A CH 132139A
- Authority
- CH
- Switzerland
- Prior art keywords
- coils
- group according
- container
- choke coil
- coil group
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
- H01F27/346—Preventing or reducing leakage fields
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- General Induction Heating (AREA)
Description
Gruppe von Drosselspulen ohne Eisenkern mit parallelen Achsen für Ein- und 1Vielirpliasensysteme. Die Erfindung bezieht sich auf Drossel spulen ohne Eisenkern mit. parallelen Ach sen für Ein- und Mehrphasensysteme, die in Metallbehältern mit Isolierflüssigkeit an geordnet sind. Zur Verminderung der Wir belstrombildung und der Erwärmung der Behälterwände durch die von den Spulen erzeugten Streulinien, die sich durch die Be hälterwände schliessen, sind bereits verschie dene Mittel vorgeschlagen worden.
Gemäss der Erfindung werden zu die sem Zweck mindestens zwei Spulen in einem Ölbehälter so angeordnet, dass zunächst lie gende Spulen in Richtung ihrer Achsen in entgegengesetztem Sinne magnetisierend wirken.
In der Zeichnung ist ein Ausführungs beispiel der Erfindung in Abb. 1 schematisch im Schnitt dargestellt; Abb. 2, ss und 4 zeigen in Längsschnitt und Grundriss weitere Aus führungsformen. In den Behälter a sind die Spulen b und c achsparallel so eingebaut, dass ihre Magnetisierungslinien in Richtung ihrer Achsen entgegengesetzt zueinander verlaufen.
Die in die Behälterwände ein tretenden Streulinien der beiden ,Spulen ver laufen in entgegengesetzten Richtungen; ihre Wirkungen heben sich somit auf bezw. die Differenzwirkung ist so gering, dass nur eine unwesentliche Erwärmung der Wände ein tritt. Die entgegengesetzt gewickelten, neben einander liegenden Spulen werden in einem solchen Abstand voneinander angeordnet, wie die Spannungsdifferenz der Spulen es zu lässt.
Der gegenseitige Abstand der Spulen wird zweckmässig durch einen Abstandshal- tes d (Abb. 2) gesichert, der entweder über die ganze Spulenlänge sich erstreckt oder aber in Distanzstücke unterteilt auf der Spulenlänge verteilt angebracht ist.
Zur Abschirmung der Behälterwände gegen die von den Spulen erzeugten Streu linien ist es vorteilhaft, im Innern des Be hälters untereinander isolierte Eisenbleche anzuordnen, die sich mindestens teilweise über die Oberfläche der Behälterwände, so- wie des Deckels und des Bodens erstrecken. Besteht dabei der Behälter aus mag:netisier- barem Material, so benutzt man zur Abschir mung der Streulinien ein gutleitendes Ma terial.
Group of choke coils without iron core with parallel axes for single and multi-directional systems. The invention relates to choke coils without an iron core. parallel axes for single and multi-phase systems that are arranged in metal containers with insulating liquid. To reduce the We belstrombildung and the heating of the container walls by the scatter lines generated by the coils that close through the Be container walls, various means have already been proposed.
According to the invention, for this purpose at least two coils are arranged in an oil container in such a way that initially lying coils have a magnetizing effect in opposite directions in the direction of their axes.
In the drawing, an embodiment example of the invention in Fig. 1 is shown schematically in section; Fig. 2, ss and 4 show further embodiments in a longitudinal section and plan. In the container a, the coils b and c are installed axially parallel in such a way that their magnetization lines run opposite one another in the direction of their axes.
The scatter lines of the two coils entering the container walls run in opposite directions; their effects thus cancel each other out. the effect of the difference is so small that the walls are only heated insignificantly. The oppositely wound coils lying next to one another are arranged at such a distance from one another as the voltage difference between the coils allows.
The mutual distance between the coils is expediently secured by a spacer d (Fig. 2), which either extends over the entire length of the coil or is distributed over the length of the coil, divided into spacers.
To shield the container walls against the scatter lines generated by the coils, it is advantageous to arrange insulated iron sheets inside the container, which extend at least partially over the surface of the container walls, as well as the lid and the bottom. If the container consists of mag: netizable material, a highly conductive material is used to shield the scatter lines.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH132139T | 1928-02-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH132139A true CH132139A (en) | 1929-03-31 |
Family
ID=4390404
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH132139D CH132139A (en) | 1928-02-16 | 1928-02-16 | Group of inductors without iron core with parallel axes for single and multi-phase systems. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH132139A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1460655A2 (en) | 2003-03-14 | 2004-09-22 | Trench Limited | Method for magnetic field reduction using the decoupling effects of multiple coil systems |
-
1928
- 1928-02-16 CH CH132139D patent/CH132139A/en unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1460655A2 (en) | 2003-03-14 | 2004-09-22 | Trench Limited | Method for magnetic field reduction using the decoupling effects of multiple coil systems |
| EP1460655A3 (en) * | 2003-03-14 | 2008-01-23 | Trench Limited | Method for magnetic field reduction using the decoupling effects of multiple coil systems |
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