DE907673C - DC converter - Google Patents
DC converterInfo
- Publication number
- DE907673C DE907673C DEA10362D DEA0010362D DE907673C DE 907673 C DE907673 C DE 907673C DE A10362 D DEA10362 D DE A10362D DE A0010362 D DEA0010362 D DE A0010362D DE 907673 C DE907673 C DE 907673C
- Authority
- DE
- Germany
- Prior art keywords
- current
- wave
- direct current
- converter
- works
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/18—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using conversion of DC into AC, e.g. with choppers
- G01R19/20—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using conversion of DC into AC, e.g. with choppers using transductors, i.e. a magnetic core transducer the saturation of which is cyclically reversed by an AC source on the secondary side
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Dc-Dc Converters (AREA)
Description
Es sind bereits Gleichstromwandler ausgeführt worden, bei denen durch Gleichstromvormagnetisierung die Induktion eines Wechsel stromkreises beeinflußt wird und die Teilkerne mit entgegengesetztem Sinn gewickelte Sekundärwicklungen besitzen. Der Sekundärstrom des Stromwandlers entsteht durch Gleichrichtung des Wechselstroms, wobei die Kurvenform im Idealfall rechteckig ist. DC converters have already been carried out in which by Direct current bias affects the induction of an alternating current circuit and the partial cores are wound with the opposite sense of the secondary windings own. The secondary current of the current transformer is created by rectifying the Alternating current, with the shape of the curve ideally being rectangular.
Demgegenüber besteht nun die Erfindung darin, daß nur tein Kern verwendet wird und in dessen von einer Wechselspannung fremderregtem Sekundärkreis eine Gleichrichterweiche liegt, mit deren Hilfe nur die annähernd rechteckige Halbwelle des sekundären Wechselstroms über die Bürde geleitet wird. In contrast, the invention now consists in that only tein core is used and in its secondary circuit, which is externally excited by an alternating voltage, a rectifier switch with the help of which only the approximately rectangular half-wave of the secondary alternating current is passed over the burden.
Die Erfindung sei an Hand der Zeichnung erläutert, aus der auch weitere Merkmale idler Erfindung hervorgehen. In Fig. I ist zunächst die Schaltung angegeben. w1 bezeichnet darin den bzw. die Primärleiter, w2 die Sekundärwicklunlg und k den Eisenkern. Im Sekundärkreis liegt die Gleichrichterweiche g, die in Reihe mit der Wicklung an die Wechsesllstromhilfsspannung Ulu angeschlossen ist. The invention will be explained with reference to the drawing, from which further Features of the invention emerge. In Fig. I, the circuit is shown first. w1 denotes the primary conductor (s), w2 the secondary winding and k den Iron core. In the secondary circuit is the rectifier switch g, which is in series with the Winding is connected to the AC auxiliary voltage Ulu.
Nimmt man an, das Material des Kernes habe eine annähernd rechtwinklige Magnetisierungskurve und das Xbersetzungsverhältnis sei I, so nimmt die Sekundärwicklung einen Wechselstrom auf, dessen Größe und Kurvenform in der Fig. 2 veranschaulicht sind. An die Stelle des Gleichstroms ist eine Reihe von rechteckähnlichen Trapezen getreten, deren Amplitude dem Gleichstrom entspricht und deren Basis fast 3600 el. beträgt. Assume that the material of the core is approximately right-angled If the magnetization curve and the transmission ratio is I, then the secondary winding takes an alternating current, the magnitude and waveform of which is illustrated in FIG are. In place of the direct current is a series of square-shaped trapezoids entered, the amplitude of which corresponds to the direct current and the base of which is almost 3600 el. amounts to.
In bezug auf den idealen Gleichstrom ist es also noch erforderlich, die negativen Stromhaibwellen (in Fig. 2 gestrichelt) von der Bürde z fernzuhalten. was durch die Anbringung eines im Nebenschluß liegenden Gleichrichters g1 bewerkstelligt wird, und die dann noch verbleibenden Lücken zwischen den positiven Halbwellen (in Fig. 2 strichpunktiert) durch den Abklingstrom einer Drossel auszufüllen. With regard to the ideal direct current, it is still necessary to keep the negative Stromhaibwellen (dashed lines in Fig. 2) away from the burden z. which is accomplished by attaching a shunted rectifier g1 and the remaining gaps between the positive half-waves (in Fig. 2 dash-dotted line) to be filled by the decay current of a throttle.
Es ist daher (s. Fig. I) ein Gleichrichter g2 vorgesehen, mit dessen Hilfe nur die annähernd rechteckigen Halbwellen des sekundären Wechselstroms über die Bürde z geleitet werden. Die im sekundären Gleichstrom ferner bestehenden, nach jeder Halbwelle auftretenden Lücken werden durch die der würde z vorgeschaltete Drossel d nahezu beseitigt. It is therefore (s. Fig. I) a rectifier g2 is provided with which Help only the roughly square half-waves of the secondary alternating current over the burden z can be conducted. Those in the secondary direct current also exist, after each half-wave occurring gaps are preceded by the would z Throttle d almost eliminated.
Als besonders vorteilhaft hat sich die Verwendung hochpermeablen Eisens als Kernmaterial erwiesen, durch welches eine weitgehend rechteckige Ausbildung der positiven Halbwelle erzielt wird. The use of highly permeable ones has proven to be particularly advantageous Iron proved to be the core material, through which a largely rectangular design the positive half-wave is achieved.
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEA10362D DE907673C (en) | 1939-10-14 | 1939-10-14 | DC converter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEA10362D DE907673C (en) | 1939-10-14 | 1939-10-14 | DC converter |
Publications (1)
Publication Number | Publication Date |
---|---|
DE907673C true DE907673C (en) | 1954-03-29 |
Family
ID=6922024
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEA10362D Expired DE907673C (en) | 1939-10-14 | 1939-10-14 | DC converter |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE907673C (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1153452B (en) * | 1961-12-27 | 1963-08-29 | Klaus Haxel Dipl Ing | DC converter |
FR2533317A1 (en) * | 1982-09-17 | 1984-03-23 | Inst Komplektnogo Elektropri | Apparatus for measuring the instantaneous value of a current |
DE3540988A1 (en) * | 1985-11-19 | 1987-05-21 | Bauer Messinstrumente Ag | Circuit for measurement conversion with direct-current isolation |
-
1939
- 1939-10-14 DE DEA10362D patent/DE907673C/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1153452B (en) * | 1961-12-27 | 1963-08-29 | Klaus Haxel Dipl Ing | DC converter |
DE1153452C2 (en) * | 1961-12-27 | 1973-01-04 | Klaus Haxel Dipl Ing | DC converter |
FR2533317A1 (en) * | 1982-09-17 | 1984-03-23 | Inst Komplektnogo Elektropri | Apparatus for measuring the instantaneous value of a current |
DE3540988A1 (en) * | 1985-11-19 | 1987-05-21 | Bauer Messinstrumente Ag | Circuit for measurement conversion with direct-current isolation |
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