DE292718C - - Google Patents
Info
- Publication number
- DE292718C DE292718C DENDAT292718D DE292718DA DE292718C DE 292718 C DE292718 C DE 292718C DE NDAT292718 D DENDAT292718 D DE NDAT292718D DE 292718D A DE292718D A DE 292718DA DE 292718 C DE292718 C DE 292718C
- Authority
- DE
- Germany
- Prior art keywords
- primary
- coil
- winding
- iron core
- constant
- 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.)
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Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 11
- 238000004804 winding Methods 0.000 claims description 11
- 230000004907 flux Effects 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims 1
- 230000001105 regulatory Effects 0.000 description 2
- 241000189705 Dunedin group Species 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
- H02M5/02—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc
- H02M5/04—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters
- H02M5/10—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using transformers
- H02M5/12—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using transformers for conversion of voltage or current amplitude only
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Ac-Ac Conversion (AREA)
Description
KAISERLICHESIMPERIAL
PATENTAMT.PATENT OFFICE.
PATENTSCHRIFTPATENT LETTERING
JVi 292718 KLASSE 21 d. GRUPPEJVi 292718 CLASS 21 d. GROUP
Zusatz zum Patent 266780.Addition to patent 266780.
Patentiert im Deutschen Reiche vom 2. Dezember 1913 ab. Längste Dauer: 25.November 1926.Patented in the German Empire on December 2, 1913. Longest duration: November 25, 1926.
Bei Eichungen von Meßinstrumenten und Zählern, welche eine Hauptstromspule und eine Spannungsspule haben, bedient man sich meistens zweier getrennter Stromkreise. Für den Hauptstromkreis ist die Verwendung von Vorschaltwiderständen, vor allem, wenn es sich um große Stromstärken handelt, wegen der Energievergeudung nicht empfehlenswert. Deshalb verwendet man bei Wechselstrom oft Autotransformatoren, deren Wicklung man stufenweise regelt. Die Erfindung besteht in der Kombination eines an sich bekannten Transformators mit abwickelbarer Primärwicklung, bei dem der Kraftfluß in bekannter Weise von einem Maximalwert bis Null geändert werden kann, und eines mit der Primärwicklung hintereinander geschalteten selbstregelnden Widerstandes beliebiger Ausführung. Eine solche Vorrichtung ermöglicht es, eine Regelung des Hauptstromes von einem bestimmten Maximalwert bis auf Null zu erhalten und dabei kein stufenweises, sondern ein kontinuierliches Anwachsen oder Abnehmen der Stromstärke zu erzielen.When calibrating measuring instruments and counters, which have a main current coil and If you have a voltage coil, you usually use two separate circuits. For The main circuit is the use of ballast resistors, especially if it is large currents are involved, not recommended because of the waste of energy. That is why autotransformers are often used for alternating current, the winding of which is used regulates gradually. The invention consists in the combination of what is known per se Transformer with a developable primary winding in which the power flow is known Way can be changed from a maximum value to zero, and one with the primary winding self-regulating resistor of any design connected in series. Such a device makes it possible to obtain a regulation of the main current from a certain maximum value down to zero and not a gradual, but a continuous increase or decrease to achieve the amperage.
Die Zeichnung zeigt den Erfindungsgegenstand schematisch in einem Ausführungsbeispiel. The drawing shows the subject matter of the invention schematically in an exemplary embodiment.
Auf den Schenkeln eines Eisenkernes α sind die festen Spulen / und c und die regelbare Spule b aufgewickelt. Diese regelbare Spule besteht aus einer Wicklung, die vom einen Schenkel des Eisenkernes auf den anderen abgewickelt werden kann. Die Kombination der als Primärspulen wirkenden Spulen / und b gestattet in bekannter Weise, den magnetischen Fluß im Eisenkern α von einem Maximum bis auf Null kontinuierlich zu regeln, je nachdem die Windungen der regelbaren Spule b gleichsinnig oder ungleichsinnig mit der Spule /aufgewickelt werden. Dieser Fluß durchsetzt nun die feste sekundäre Spule c; ist der äußere Widerstand d dieser Spule c konstant (wie das bei der Eichung eines Meßinstrumentes oder Zählers der Fall ist), so ändert sich also der Strom in der Spule c, j e nachdem die regelbare Wicklung b geschaltet ist.The fixed coils / and c and the adjustable coil b are wound on the legs of an iron core α. This adjustable coil consists of a winding that can be unwound from one leg of the iron core to the other. The combination of the coils / and b acting as primary coils allows the magnetic flux in the iron core α to be continuously regulated from a maximum to zero, depending on whether the turns of the controllable coil b are wound in the same direction or in the same direction as the coil /. This flux now passes through the fixed secondary coil c ; if the external resistance d of this coil c is constant (as is the case when calibrating a measuring instrument or counter), the current in coil c changes depending on the controllable winding b is connected.
In Reihe mit der Primärwicklung f, b ist ein Eisenwiderstand e oder ein in Abhängigkeit von der Drehung der Spulen b regelbarer Widerstand geschaltet. Nimmt beispielsweise bei der Regulierung die Spannung an dem Ende des Transformators ab, dadurch, daß immer mehr Windungen der Spule b einander ei?tgegengeschaltet werden, so steigt in gleichem Maße die Spannung am Widerstand e, ohne daß dabei der den Primärkreis durchfließende Strom sich ändert, während der Strom in der Spule c sich gegebenenfalls infolge der Verringerung des Transformatorkraftflusses verkleinert; es ist ersichtlich, daß auf diese Weise eine stoßfreie Regulierung der Stromstärke im Stromkreise der Spule c von Null an bis zu einem Maximum möglich ist, dabei gewährt die Einrichtung noch den für An iron resistor e or a resistor that can be regulated as a function of the rotation of the coils b is connected in series with the primary winding f, b. If, for example, the voltage at the end of the transformer decreases during regulation, as more and more turns of the coil b are switched in opposite directions, the voltage across the resistor e increases to the same extent without the current flowing through the primary circuit changing , while the current in the coil c may decrease as a result of the reduction in the transformer power flow; It can be seen that in this way a bumpless regulation of the current intensity in the circuit of the coil c from zero to a maximum is possible, while the device still grants the for
Eichstationen erwähnenswerten Vorteil, daß die Netzbelastung konstant bleibt, während sich der Strom in dem zu eichenden Instrument d beliebig ändert.Calibration stations have the advantage that the network load remains constant while the current in the instrument d to be calibrated changes at will.
Bei der praktischen Ausführung wird man meist die festen Spulen f und c über den ganzen Eisenkern wickeln und die regelbare Spule b darüber.In practice, the fixed coils f and c will usually be wound over the entire iron core and the adjustable coil b over it.
Claims (1)
Publications (1)
Publication Number | Publication Date |
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DE292718C true DE292718C (en) |
Family
ID=547461
Family Applications (1)
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DENDAT292718D Active DE292718C (en) |
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