DE685971C - Arrangement for grid control during the direct conversion of alternating current of one frequency into alternating current of another frequency by means of grid-controlled discharge paths - Google Patents
Arrangement for grid control during the direct conversion of alternating current of one frequency into alternating current of another frequency by means of grid-controlled discharge pathsInfo
- Publication number
- DE685971C DE685971C DEA69750D DEA0069750D DE685971C DE 685971 C DE685971 C DE 685971C DE A69750 D DEA69750 D DE A69750D DE A0069750 D DEA0069750 D DE A0069750D DE 685971 C DE685971 C DE 685971C
- Authority
- DE
- Germany
- Prior art keywords
- grid
- alternating current
- frequency
- discharge paths
- arrangement
- 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
- 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
- H02M5/005—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 using discharge tubes
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
Description
Anordnung zur Gittersteuerung bei der unmittelbaren Umformung von Wechselstrom einer Frequenz in Wechselstrom anderer Frequenz mittels gittergesteuerter Entladungsstrecken Zusatz zum Patent 681 135 Gegenstand des Patents 681 135 ist eine Anordnung zur Gittersteuerung bei Umrichtern, d. h. Einrichtungen zur Umformung von Wechselstrom einer Frequenz in Wechselstrom anderer Frequenz mittels gittergesteuerter Entladungsstrecken, vorzugsweise mitDampf-oder Gasfüllung, und zwar sind für die Gitterkreise wenigstens eines Teiles der Entladungsstrecken mindestens zwei sich gegenseitig ausschließende Steuerwege vorgesehen. Diese Steuerung hat Bedeutung bei der asynchronen Umformung von Drehstrom höherer Frequenz in Einphasenstrom niederer Frequenz, wobei sich die verschiedenartigsten Arbeitsbedingungen für die .einzelnen Primärphasen ergeben können. Vorliegende Erfindung bezweckt eine Vereinfachung der Steuerungsvor= gänge, und zwar werden erfindungsgemäß bei nicht ausgezeichnetem Gleichrichterbetrieb :die Entladungsstrecken gruppenweise :gestLüert.Arrangement for grid control in the direct conversion of alternating current of one frequency into alternating current of another frequency by means of grid-controlled discharge paths Addition to patent 681 135 Subject of patent 681 135 is an arrangement for grid control in converters, i.e. devices for converting alternating current of one frequency into alternating current of another frequency by means of grid-controlled Discharge paths, preferably with vapor or gas filling, namely at least two mutually exclusive control paths are provided for the grid circles of at least some of the discharge paths. This control is important in the asynchronous conversion of three-phase current of higher frequency into single-phase current of lower frequency, whereby the most diverse working conditions can result for the .individual primary phases. The present invention aims to simplify the control processes, namely according to the invention if the rectifier operation is not excellent: the discharge paths are controlled in groups.
Der Erfindungsgedanke soll an Hand des in der Zeichnung angegehenen Schaltbildes erläutert werden, wobei angenommen sein soll, daß die ein- und zweigestrichenen Gruppen von Entladungsstrecken je gemeinsames Kathodenpotential haben, also an getrennte Wicklungen des Drehstromtransformators angeschlossen sind. Unter Anlehnung an die Bezeichnungsweise der Abb#.5 des Hauptpatents sind für die Entladungsstrecken 14' . . . 16' die Steuerwege mit Schaltwalzen (Kommutatoren) für nicht ausgezeichneten Gleichrichter- und Wechselrichterbetrieb angegeben. Die Gitterkreise enthalten die negative Vorspannung eg" und die Strombegrenzungswiderstände R, und R2. Der Steuerweg,-",. mit der entsprechend benannten Schaltwalze führt in der Zeit des nicht ausgezeichneten Gleichrichterbetriebs den Gittern der Entladungsstrecken 14. . . . 16' mittels der Gleichspannung e" eine solche, und zwar ausschließlich niederfrequente Steuerspannung zu, daß die negative Sp;errsp,annurng:ea" unwirksam ist. In der nächsten Halbwelle der niederfrequenten Spannung sind die EntIadungsstrecken entsprechend den Bedingungen des Wechselrichterbetriebs zu steuern, wobei man vorteilhaft die mit ew,na (p) benannten Schaltwalzen mit derart kleinen Kontaktbreiten versieht, daß sich als resultierende wirksame Gitterspanneng eine Steuerwechselspannung spe Wellenform ergibt. Um zu vermeiden, ,r"ße infolge der Gruppensteuerung bei Gleieh-_' richterbetrieb eine @entsprechende Steuerung auch bei Wechselrichterbetrieb auftritt, wird man Sperrungen zwischen den einzelnen Gitterkreisen vorsehen. Obwohl auch andere Scheinwiderstandselemente Verwendung finden können, wird man vorzugsweise doch elektrische Ventile i q.0' . . . i 6o' zur Anwendung bringen. Im allgemeinen werden bei den verhältnismäßig kleinen Steuerspannungen Trockengleichrichter ausreichend sein. An Stelle einer elektromagnetischen Steuerung mit durch Synchronmotoren angetriebenen Schaltwalzen kann man auch entsprechend wirkende rein elektrische Steuerungen, insbesondere solche mit ,gittergesteuerten Hilfsentladungsstrecken, verwenden. Hinsichtlich des Betriebs mit ausgezeichneter Phase ergeben sich gegenüber den Lösungen des Hauptpatents und ihren bereits vorgeschlagenen Weiterbildungen keine Besonderheiten, so daß sie im Interesse der Übersichtlichkeit in ,der Zeichnung nicht aufgeführt wurden.The idea of the invention will be explained using the circuit diagram in the drawing, assuming that the one and two-line groups of discharge paths each have a common cathode potential, i.e. are connected to separate windings of the three-phase transformer. Based on the designation of Fig. 5 of the main patent, the discharge paths 14 '. . . 16 'indicates the control paths with switching drums (commutators) for rectifier and inverter operation that are not excellent. The grid circles contain the negative bias voltage eg "and the current limiting resistors R, and R2. The control path, -",. with the correspondingly named switching drum leads the grid of the discharge paths 14 in the time of the not excellent rectifier operation. . . 1 6 ' by means of the direct voltage e "a control voltage that is exclusively low-frequency so that the negative Sp; errsp, annurng: ea" is ineffective. In the next half-wave of the low-frequency voltage, the discharge paths are to be controlled according to the conditions of the inverter operation, whereby it is advantageous to provide the switching drums named with ew, na (p) with such small contact widths that the resulting effective grid voltage results in an AC control voltage spe waveform. In order to avoid that, as a result of the group control in the case of equilibrium operation, a corresponding control also occurs in the case of inverter operation, blockages will be provided between the individual grid circles q.0 '... i 6o'. In general, with the relatively low control voltages, dry rectifiers will be sufficient With regard to the operation with an excellent phase, there are no special features compared to the solutions of the main patent and their already proposed developments, so that they have not been listed in the drawing in the interests of clarity.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEA69750D DE685971C (en) | 1933-06-14 | 1933-06-14 | Arrangement for grid control during the direct conversion of alternating current of one frequency into alternating current of another frequency by means of grid-controlled discharge paths |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEA69750D DE685971C (en) | 1933-06-14 | 1933-06-14 | Arrangement for grid control during the direct conversion of alternating current of one frequency into alternating current of another frequency by means of grid-controlled discharge paths |
Publications (1)
Publication Number | Publication Date |
---|---|
DE685971C true DE685971C (en) | 1939-12-29 |
Family
ID=6945067
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEA69750D Expired DE685971C (en) | 1933-06-14 | 1933-06-14 | Arrangement for grid control during the direct conversion of alternating current of one frequency into alternating current of another frequency by means of grid-controlled discharge paths |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE685971C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6570921B1 (en) * | 1998-07-10 | 2003-05-27 | Koninklijke Philips Electronics N.V. | Data compression assembly having several data-compression channels |
-
1933
- 1933-06-14 DE DEA69750D patent/DE685971C/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6570921B1 (en) * | 1998-07-10 | 2003-05-27 | Koninklijke Philips Electronics N.V. | Data compression assembly having several data-compression channels |
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