DE922894C - Direct current pre-magnetized choke coil, especially for three-phase current - Google Patents
Direct current pre-magnetized choke coil, especially for three-phase currentInfo
- Publication number
- DE922894C DE922894C DEA11751D DEA0011751D DE922894C DE 922894 C DE922894 C DE 922894C DE A11751 D DEA11751 D DE A11751D DE A0011751 D DEA0011751 D DE A0011751D DE 922894 C DE922894 C DE 922894C
- Authority
- DE
- Germany
- Prior art keywords
- direct current
- choke coil
- legs
- phase
- leg
- 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
- H01F29/14—Variable transformers or inductances not covered by group H01F21/00 with variable magnetic bias
- H01F29/146—Constructional details
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Coils Of Transformers For General Uses (AREA)
- Coils Or Transformers For Communication (AREA)
Description
Vorgeschlagen wurde eine gleichstromvormagnetisierte Drosselspule, deren Kern aus drei normalen bewickelten und zwei stärker dimensionierten unbewickelten Schenkeln besteht, wobei die erstgenannten Schenkel sowohl die Drehstrom- als auch die in Dreieck geschaltete Gleichstromwicklung tragen. Zwecks Oberwellenausscheidung ist der Kern ferner in Richtung der Schenkelflucht in zwei gleiche Hälften aufgespalten, wobei sichA direct current bias has been proposed Choke coil, the core of which consists of three normal wound and two more heavily dimensioned unwound Legs consists, the first-mentioned legs both the three-phase as well as the delta-connected DC winding wear. For the purpose of eliminating harmonics, the core is also in the direction of the leg alignment split in two equal halves, being
ίο die Gleichstromwicklung auf beide Hälften verteilt. Der Gleichfluß ist hierbei in aller« drei bewickelten Schenkeln gleichgerichtet und- schließt sich über die Hilfsschenkel, deren Ouerschnittssumme annähernd gleich der Summe der Querschnitte der drei Hauptschenkel istίο the DC winding distributed over both halves. The constant flow is here in the same direction in all three wound legs and closes over the auxiliary legs, their cross-section sum is approximately equal to the sum of the cross sections of the three main legs
An diesem für die Hilfsschenkel aufgewendeten Eisen kann nun noch gespart werden, wenn die Gleichstromwicklungen je Doppelschenkel erfinr dungsgemäß in bestimmter Reihenfolge so miteinander verbunden sind, daß die Gleichflüsse der einzelnen Schenkel, auch senkrecht zur Schenkelfiucht gesehen, jeweils verschiedene Richtungen aufweisen. Damit kann ein Hauptschenkel als Rückschluß eines anderem aufgefaßt werden. Man erspart somit einmal einen Hilfsschenkel vollständig und braucht weiterhin dem anderen nur den gleichen Querschnitt wie den Hauptschenkeln zu geben. Zwei Drittel des für die Hilfsschenkel bisher aufgewendeten Eisens können also erspart werden, ohne daß sich an den Eigenschaften der Drosselspule etwas ändert.This iron used for the auxiliary legs can now be saved if the DC windings per double leg according to the invention in a certain order with one another are connected that the constant fluxes of the individual legs, also perpendicular to the leg evacuation seen, each have different directions. This means that a main limb can be used as a Conclusion of another. One saves an auxiliary leg completely and still needs the other only the same cross-section as the main legs admit. Two thirds of the iron previously used for the auxiliary legs can thus be saved without changing anything in the properties of the inductor.
Ein Ausführungsbeispiel nach der Erfindung ist in den Abb. 1 bis 3 der Zeichnung dargestellt. Die Doppelschenkel 1, 3 und 4 mögen die Wicklungen 5 tragen. Infolge der erfindungsgemäßen Schaltung der Gleichstromwicklung nach Abb. 3 erhalten die Gleichflüsse der einzelnen Schenkel 1 bis 4 jeweils verschiedene Richtungen, so daß ein Hauptschenkel als Rückschluß eines- anderen dient, wie dies in Abb. ι und 2 angedeutet worden ist.An embodiment according to the invention is shown in Figs. 1 to 3 of the drawing. the Double legs 1, 3 and 4 may carry the windings 5. As a result of the circuit according to the invention the direct current winding according to Fig. 3 receives the direct fluxes of the individual legs 1 to 4 respectively different directions, so that one main leg serves as the inference of another, as shown in Fig. Ι and 2 has been indicated.
Diese Schaltung und Kernanordnung ergibt sehr einfache gleichstromvormagnetisierte Drosselspulen für jedes Mehrphasensystem.This circuit and core arrangement results in very simple DC-biased choke coils for any multi-phase system.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEA11751D DE922894C (en) | 1938-02-19 | 1938-05-18 | Direct current pre-magnetized choke coil, especially for three-phase current |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE208247X | 1938-02-19 | ||
DEA11751D DE922894C (en) | 1938-02-19 | 1938-05-18 | Direct current pre-magnetized choke coil, especially for three-phase current |
Publications (1)
Publication Number | Publication Date |
---|---|
DE922894C true DE922894C (en) | 1955-01-27 |
Family
ID=25760402
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEA11751D Expired DE922894C (en) | 1938-02-19 | 1938-05-18 | Direct current pre-magnetized choke coil, especially for three-phase current |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE922894C (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4962362A (en) * | 1989-03-30 | 1990-10-09 | Whittaker Richard W | Multi-magnetic field plural core transformer |
US5177460A (en) * | 1990-01-04 | 1993-01-05 | Dhyanchand P John | Summing transformer for star-delta inverter having a single secondary winding for each group of primary windings |
US5355296A (en) * | 1992-12-10 | 1994-10-11 | Sundstrand Corporation | Switching converter and summing transformer for use therein |
-
1938
- 1938-05-18 DE DEA11751D patent/DE922894C/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4962362A (en) * | 1989-03-30 | 1990-10-09 | Whittaker Richard W | Multi-magnetic field plural core transformer |
US5177460A (en) * | 1990-01-04 | 1993-01-05 | Dhyanchand P John | Summing transformer for star-delta inverter having a single secondary winding for each group of primary windings |
US5355296A (en) * | 1992-12-10 | 1994-10-11 | Sundstrand Corporation | Switching converter and summing transformer for use therein |
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