DE563993C - Adjustable choke coil, the inductance of which is changed by changing an air gap in the magnetic circuit - Google Patents
Adjustable choke coil, the inductance of which is changed by changing an air gap in the magnetic circuitInfo
- Publication number
- DE563993C DE563993C DENDAT563993D DE563993DD DE563993C DE 563993 C DE563993 C DE 563993C DE NDAT563993 D DENDAT563993 D DE NDAT563993D DE 563993D D DE563993D D DE 563993DD DE 563993 C DE563993 C DE 563993C
- Authority
- DE
- Germany
- Prior art keywords
- air gap
- changed
- changing
- choke coil
- inductance
- 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
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F29/00—Variable transformers or inductances not covered by group H01F21/00
- H01F29/08—Variable transformers or inductances not covered by group H01F21/00 with core, coil, winding, or shield movable to offset variation of voltage or phase shift, e.g. induction regulators
- H01F29/10—Variable transformers or inductances not covered by group H01F21/00 with core, coil, winding, or shield movable to offset variation of voltage or phase shift, e.g. induction regulators having movable part of magnetic circuit
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Emergency Protection Circuit Devices (AREA)
Description
Regelbare Drosselspule, deren Induktivität durch Veränderung eines Luftspaltes im magnetischen Kreise geändert wird Es ist vorgeschlagen worden, zur Kompensation des kapazitiven Erdschlußstromes Drosselspulen mit veränderlichem Luftspalt zu verwenden. Die Änderung des Luftspaltes und damit der Induktivität der Drosselspule wird zweckmäßig durch Drehung eines Ankers im Luftspalt vorgenommen. Der Regulierbereich ist dabei abhängig von dem größten und kleinsten Widerstand, welcher durch die Veränderung des Luftspaltes eingestellt werden kann. Dieser Regulierbereich wird dadurch stark verkleinert, daß sich das magnetische Feld durch die Luft von Joch zu Joch schließen kann.Adjustable inductor whose inductance can be changed by changing a Air gap in the magnetic circuit is changed It has been proposed to Compensation of the capacitive earth fault current reactors with variable air gap to use. The change in the air gap and thus the inductance of the choke coil is expediently carried out by rotating an armature in the air gap. The regulation area depends on the greatest and smallest resistance caused by the change the air gap can be adjusted. This area of regulation thereby becomes strong reduced so that the magnetic field close through the air from yoke to yoke can.
Gemäß der Erfindung wird dieser Nachteil dadurch vermieden, daß man den magnetischen Widerstand der Streuwege durch Kurzschlußwicklungen vergrößert.According to the invention, this disadvantage is avoided by the magnetic resistance of the stray paths is increased by short-circuit windings.
In den Abbildungen sind Ausführungsbeispiele der Erfindung dargestellt.Exemplary embodiments of the invention are shown in the figures.
Abb. i und 2 zeigen eine Dreiphasendrosselspule, wie sie zur Kompensierung des kapazitiven Erdschlußstromes verwendet werden kann: Diese dreiphasige Drosselspule besitzt einen vierten Schenkel, in welchem ein Anker i drehbar angeordnet ist. Im normalen Betrieb ist die Summe der drei Kraftflüsse gleich Null. Beim Auftreten eines Erdschlusses überlagert sich dem normalen Mehrphasenfeld ein Einphasenfeld, das sich über den vierten Schenkel und über den Luftraum von Joch zu Joch schließt. Um das durch den Luftraum sich schließende jochstreufeld zu verkleinern, sind gemäß der Erfindung Kurzschlußwicklungen angebracht, die in dem Ausführungsbeispiel als Platten 2 ausgebildet sind. Durch diese Kurzschlußwicklungen wird der Widerstand des Luftraumes sehr stark vergrößert, so daß für den maximalen Regulierbereich annähernd das .Verhältnis des größten zum kleinsten einstellbaren Widerstand des vierten Schenkels maßgebend ist.Fig. I and 2 show a three-phase inductor as used for compensation of the capacitive earth fault current can be used: This three-phase choke coil has a fourth leg in which an armature i is rotatably arranged. in the normal operation, the sum of the three power flows is zero. When occurring In the event of an earth fault, a single-phase field is superimposed on the normal multi-phase field, which closes over the fourth leg and over the air space from yoke to yoke. In order to reduce the stray yoke field closed by the air space, according to of the invention short-circuit windings attached, which in the embodiment as Plates 2 are formed. These short-circuit windings make the resistance of the air space is very much enlarged, so that approximately for the maximum range of regulation the .Ratio of the largest to the smallest adjustable resistance of the fourth leg is decisive.
Wie in Abb. 3 und ¢ dargestellt, kann man die Kurzschlußwicklungen auch so anordnen, daß sowohl das aus den Stirnflächen der Joche als auch das seitlich aus den Jochen austretende Streufeld abgeschirmt wird.As shown in Fig. 3 and ¢, you can see the short-circuit windings also arrange so that both the end faces of the yokes and the side stray field emerging from the yokes is shielded.
Diese Abschirmung des jochstreufeldes zur Vergrößerung des Regulierbereiches von Drosselspulen mit veränderlichem Luftspalt kann man auch bei Einphasendrosselspulen verwenden, die zur Erdschlußlöschung oder auch zur Kompensierung der kapazitiven Blindleistung von Wechselstromleitungen dienen.This shielding of the yoke stray field to enlarge the regulation area Choke coils with a variable air gap can also be used with single-phase choke coils use those for earth fault quenching or to compensate for the capacitive Reactive power from AC lines are used.
Claims (2)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE563993T |
Publications (1)
Publication Number | Publication Date |
---|---|
DE563993C true DE563993C (en) | 1932-11-12 |
Family
ID=6566874
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DENDAT563993D Expired DE563993C (en) | Adjustable choke coil, the inductance of which is changed by changing an air gap in the magnetic circuit |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE563993C (en) |
-
0
- DE DENDAT563993D patent/DE563993C/en not_active Expired
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