DE1074146B - DC-excited choke for three-phase current - Google Patents
DC-excited choke for three-phase currentInfo
- Publication number
- DE1074146B DE1074146B DENDAT1074146D DE1074146DA DE1074146B DE 1074146 B DE1074146 B DE 1074146B DE NDAT1074146 D DENDAT1074146 D DE NDAT1074146D DE 1074146D A DE1074146D A DE 1074146DA DE 1074146 B DE1074146 B DE 1074146B
- Authority
- DE
- Germany
- Prior art keywords
- excited
- choke
- phase current
- iron cores
- 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.)
- Pending
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 9
- 238000004804 winding Methods 0.000 claims description 8
- 210000002414 Leg Anatomy 0.000 description 8
- 239000000463 material Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000005284 excitation Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 210000000689 upper leg Anatomy 0.000 description 1
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)
Description
Gleichstromerregte Drossel für Drehstrom Die Erfindung betrifft gleichstromerregte Drosselspulen, die beispielsweise für die Steuerung von Drehstromkreisen Verwendung finden.DC-excited choke for three-phase current The invention relates to direct-current excited chokes Choke coils, which are used, for example, for the control of three-phase circuits Find.
Bei den bisher bekanntgewordenen Drosseln der in Betracht kommenden Art sind drei komplette Einphaseneinheiten zusammengefaßt, wobei jede normalerweise aus einem Dreischenkelkern besteht, dessen äußere Schenkel die Wechselstromwicklungen und dessen innerer Schenkel die Gleichstromwicklung tragen. Eine derartige Konstruktion bedingt einen verhältnismäßig großen Raum- und Materialaufwand.In the case of the chokes that have become known so far, the Art are three complete single-phase units, each normally consists of a three-leg core, the outer legs of which are the alternating current windings and whose inner legs carry the direct current winding. Such a construction requires a relatively large amount of space and material.
Die Mängel dieser üblicherweise verwendeten gleichstromerregten Drosseln für Drehstrom lassen sich gemäß der Erfindung dadurch vermeiden, wenn man drei zweischenkelige Eisenkerne in an sich bekannter Weise sternartig aneinanderfügt, wobei eine einzige Gleichstromwicklung die drei zu einem Block vereinigten inneren Schenkel der Eisenkerne umgibt, und die drei äußeren Schenkel der Eisenkerne je eine Wechselstromwicklung tragen.The shortcomings of these commonly used DC excited chokes for three-phase current can be avoided according to the invention if you have three two-legged Iron cores joined together in a star-like manner in a manner known per se, with a single one DC winding the three inner legs of the iron cores united to form a block surrounds, and the three outer legs of the iron cores each have an alternating current winding wear.
Zwar ist es bekanntgeworden, zweischenkelige Eisenkerne sternförmig zu einem Magnetkern zu vereinigen, doch verfolgte man mit diesen Anordnungen andere Zwecke als vorliegend beim Gegenstand der Erfindung, der sich auf gleichstromerregte Drehstromdrosseln bezieht.It has become known to have two-legged iron cores in a star shape to unite into a magnetic core, but one pursued different with these arrangements Purposes as present in the subject matter of the invention relating to DC excited Three-phase chokes.
Da die Summe der drei Phasenspannungen eines Drehstromnetzes in jedem Augenblick Null ist, so ist auch der magnetische Fluß im mittleren Schenkel eines in der beschriebenen Weise ausgebildeten Eisenkernes gleich Null, da er sich aus den Flüssen der drei äußeren Schenkel addiert. Aus diesem Sachverhalt ergibt sich die Möglichkeit, die Drossel in der erfindungsgemäß vorgeschlagenen Weise auszubilden, wobei die einander angrenzenden Schenkel der zweischenkeligen Eisenkerne mit der Gleichstromwicklung umgeben sind, da in dieser keine Wechselspannungen induziert werden. Voraussetzung bei dieser Konstruktion ist allerdings, daß die drei Wechselstromwicklungen einander gleich sind und von gleich großen Strömen durchflossen werden.Since the sum of the three phase voltages of a three-phase network in each Moment is zero, so is the magnetic flux in the middle leg formed in the manner described iron core equal to zero, since it is made from added to the flows of the three outer thighs. From this fact follows the possibility of designing the throttle in the manner proposed according to the invention, wherein the adjacent legs of the two-legged iron cores with the DC winding are surrounded, since no AC voltages are induced in this will. A prerequisite for this construction, however, is that the three alternating current windings are equal to each other and are traversed by currents of equal size.
Die Regelung der erfindungsgemäßen Drossel erfolgt in der gleichen, bei den bekannten Drosseln üblichen Weise. Durch eine steigende Vormagnetisierung, die mittels eines in der Gleichstromwicklung fließenden Stromes erreicht wird, verringert sich die Selbstinduktion der drei Wechselstromwicklungen und damit auch der Spannungsabfall an diesen Wicklungen.The regulation of the throttle according to the invention takes place in the same way, with the known throttles usual way. Due to an increasing bias, which is achieved by means of a current flowing in the direct current winding is reduced the self-induction of the three alternating current windings and thus also the voltage drop on these windings.
Die erfindungsgemäße Drossel besitzt beträchtliche Vorteile. Es läßt sich bei dieser in erheblichem Ausmaß Material einsparen. Außerdem ist die Erregungsleistung gegenüber den bekannten Drosseln kleiner. Weiterhin läßt sich der Platzbedarf wesentlich verringern. Aus der Materialeinsparung ergibt sich wiederum ein beachtlich geringeres Gewicht der erfindungsgemäßen Drossel gegenüber den bekannten.The choke according to the invention has considerable advantages. It leaves This saves a considerable amount of material. In addition, the excitation power smaller than the known throttles. Furthermore, the space requirement can be significantly to decrease. The material saving in turn results in a considerably lower one Weight of the throttle according to the invention compared to the known.
In der Zeichnung ist der Gegenstand der Erfindung an Hand eines Ausführungsbeispiels schematisch dargestellt.In the drawing, the subject matter of the invention is based on an exemplary embodiment shown schematically.
Die drei zweischenkeligen Eisenkerne 1, 2 und 3 sind sternförmig zueinander angeordnet, so daß die inneren Schenkel 4, 5 und 6 dicht beieinander liegen; sie sind von der Gleichstromwicklung 7 umgeben. Die äußeren Schenkel 8, 9 und 10 tragen die Wechselstromwicklungen 11, 12 und 13.The three two-legged iron cores 1, 2 and 3 are arranged in a star shape to one another, so that the inner legs 4, 5 and 6 are close together; they are surrounded by the direct current winding 7. The outer legs 8, 9 and 10 carry the alternating current windings 11, 12 and 13.
Claims (1)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1074146B true DE1074146B (en) | 1960-01-28 |
Family
ID=598270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT1074146D Pending DE1074146B (en) | DC-excited choke for three-phase current |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE1074146B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102012207557A1 (en) * | 2012-05-07 | 2013-11-07 | Wobben Properties Gmbh | Three-phase choke |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT89889B (en) * | 1914-07-10 | 1922-11-10 | Aeg | Choke coil with variable inductance or transformer for frequency doubling. |
| US1477359A (en) * | 1921-04-11 | 1923-12-11 | Gen Electric | Stationary induction apparatus |
| US1652911A (en) * | 1926-11-18 | 1927-12-13 | Gen Electric | Transformer |
| DE623881C (en) * | 1936-01-07 | C H F Mueller Akt Ges | Radial transformer | |
| DE641566C (en) * | 1932-12-07 | 1937-02-05 | Wendolyn Fredolyn Gakle | Transformer with a star-shaped core made of toroidal iron cores |
| US2220732A (en) * | 1938-01-25 | 1940-11-05 | Gen Electric | Transformer core and method of making the same |
| US2359173A (en) * | 1940-12-18 | 1944-09-26 | Gen Electric | Electromagnetic induction apparatus |
| US2617090A (en) * | 1950-06-17 | 1952-11-04 | Gen Electric | Saturable reactor apparatus |
-
0
- DE DENDAT1074146D patent/DE1074146B/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE623881C (en) * | 1936-01-07 | C H F Mueller Akt Ges | Radial transformer | |
| AT89889B (en) * | 1914-07-10 | 1922-11-10 | Aeg | Choke coil with variable inductance or transformer for frequency doubling. |
| US1477359A (en) * | 1921-04-11 | 1923-12-11 | Gen Electric | Stationary induction apparatus |
| US1652911A (en) * | 1926-11-18 | 1927-12-13 | Gen Electric | Transformer |
| DE641566C (en) * | 1932-12-07 | 1937-02-05 | Wendolyn Fredolyn Gakle | Transformer with a star-shaped core made of toroidal iron cores |
| US2220732A (en) * | 1938-01-25 | 1940-11-05 | Gen Electric | Transformer core and method of making the same |
| US2359173A (en) * | 1940-12-18 | 1944-09-26 | Gen Electric | Electromagnetic induction apparatus |
| US2617090A (en) * | 1950-06-17 | 1952-11-04 | Gen Electric | Saturable reactor apparatus |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102012207557A1 (en) * | 2012-05-07 | 2013-11-07 | Wobben Properties Gmbh | Three-phase choke |
| WO2013167382A1 (en) * | 2012-05-07 | 2013-11-14 | Wobben Properties Gmbh | Three-phase choke |
| CN104285263A (en) * | 2012-05-07 | 2015-01-14 | 乌本产权有限公司 | Three-phase choke |
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