CH366326A - High-current rectifier system - Google Patents
High-current rectifier systemInfo
- Publication number
- CH366326A CH366326A CH7582059A CH7582059A CH366326A CH 366326 A CH366326 A CH 366326A CH 7582059 A CH7582059 A CH 7582059A CH 7582059 A CH7582059 A CH 7582059A CH 366326 A CH366326 A CH 366326A
- Authority
- CH
- Switzerland
- Prior art keywords
- rectifier system
- current rectifier
- current
- primary
- phase
- Prior art date
Links
- 238000004804 winding Methods 0.000 claims description 20
- 230000001419 dependent effect Effects 0.000 claims 3
- 230000000903 blocking effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000004065 semiconductor 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
- H02M7/00—Conversion of AC power input into DC power output; Conversion of DC power input into AC power output
- H02M7/02—Conversion of AC power input into DC power output without possibility of reversal
- H02M7/04—Conversion of AC power input into DC power output without possibility of reversal by static converters
- H02M7/06—Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes without control electrode or semiconductor devices without control electrode
- H02M7/068—Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes without control electrode or semiconductor devices without control electrode mounted on a transformer
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Rectifiers (AREA)
Description
Zusatzpatent zum Hauptpatent Nr. 356197 Hochstrom-Gleichrichteranlage Die Erfindung stehlt eine vorteilhafte weitere Aus bildung der im Hauptpatent wiedergegebenen Hoch- strom-Gleichrichteranlage dar, bei der Einzelventile verhältnismässig kleiner Nennstromstärke, insbeson dere Einkristall-Halbleiterventile,
Verwendung finden. Der in dieser Anlage verwendete Transformator weist für die Speisung jedes Ventilsatzes eine separate Primär- und eine zugehörige separate Sekundärwick- lung auf, deren stationärer effektiver Kürzschlussstrom den kurzzeitig zulässigen Belastungsstrom eines Ven tilsatzes nicht überschreitet. Ferner sind rasch wir kende Schalter im Transformator-Primärkreis ange ordnet.
Gemäss einer Ausführungsform des Haupt patentes werden die separaten Sekundärwicklungen über die einzelnen Gleichrichtersätze und eine in Zickzack geschaltete Dreiphasen-Saugdrossel mit den Sammelschienen verbunden. Die Ventile der Ein- phasenbrücken arbeiten hierbei mit einer Stromfüh- rung von 180 e1. + überlappungswinkel.
Verbesserungen .im Hinblick auf die Beanspru- chung der Ventile werden erfindungsgemäss dadurch erreicht, dass Mittel vorgesehen sind, welche für das Einzelventil eine Stromführung von näherungsweise 120 el. bedingen.
Der Vorteil der Erfindung besteht zunächst darin, dass die Ventile nur noch eine maximale Sperrspan nung von 1,05 - Ug aufnehmen müssen (Ug = Mitt lere Gleichspannung), während die im Hauptpatent beschriebene Schaltung eine Sperrspannung von 1,58 - Ug aufweist. Weiterhin wird die Bauleistung der Saugdrossel wesentlich kleiner, und auch die mittlere Tranaformatorleistung sinkt.
Die Mittel, welche für das Einzelventil eine Stromführung von näherungs- weise 120 e1. bedingen, können darin bestehen, dass die Primärwicklungen in Stern geschaltet und ein freier magnetischer Rückschluss vorgesehen werden. Man kann aber auch die zu jeder separaten Sekundär wicklung gehörenden Ventile mit gleicher Polarität über eine Saugdrossel verbinden.
In den Zeichnungen sind Ausführungsbeispiele des Erfindungsgegenstandes schematisch wIederge- geben.
Fig. 1 zeigt eine Transformatorschaltung mit je vier Primärwicklungen und den zugehörigen vier Sekundärwicklungen pro Phase.
Fig. 2 gibt die Schaltung wieder, wie sie bei Vor handensein eines freien magnetischen Rückschlusses des Transformators verwendet wird.
Fig. 3 zeigt eine Ausführung mit drei Einphasen transformatoren, welche in Stern geschaltete Primär- wicklungen aufweisen.
In Fig. 1 sind mit 1 die in Dreieck geschalteten Primärwicklungen, mit 2 die zugehörigen separaten Sekundärwicklungen bezeichnet. Die Ventile haben die Bezugsziffer 3. Die Einphasen-Saugdrosseln 4, 4' sind zwischen Stromschienen gleicher Polarität 5 und 5' bzw. 6 und 6' geschaltet.
In Fig.2 sind mit 7 die in Stern geschalteten Primärwicklungen, mit 8 die zugehörigen Sekundär wicklungen, mit 9 die Gleichrichter und mit 10, 11 die Sammelschienen bezeichnet.
In Fig. 3, in der gleiche Teile mit denselben Be zugszeichen versehen sind wie in Fig. 2, sind drei Einphasentransformatoren 12, 12' und 12" mit unter teilten Wicklungen dargestellt. Beün Transformator 12 werden die auf beiden Transformatorkernen vor handenen Primär- und Sekundärwicklungen im Schnitt gezeigt, bei den Transformatoren 12' und 12" jedoch in Seitenansicht. Die Primärwicklungen 7 sind in Stern. geschaltet (Sternpunkt 0).
Die Sekundärwicklungen 8 führen über die Ventile 9 zu den Schienen 10 und 11.
Additional patent to the main patent no. 356197 high-current rectifier system The invention is an advantageous further development of the high-current rectifier system reproduced in the main patent, in which individual valves have a relatively low nominal current strength, in particular single-crystal semiconductor valves,
Find use. The transformer used in this system has a separate primary and an associated separate secondary winding for supplying each valve set, the steady-state effective short-circuit current of which does not exceed the short-term permissible load current of a valve set. Furthermore, we quickly switch switches in the transformer primary circuit.
According to one embodiment of the main patent, the separate secondary windings are connected to the busbars via the individual rectifier sets and a zigzag three-phase suction choke. The valves of the single-phase bridges work with a current of 180 e1. + overlap angle.
Improvements with regard to the stress on the valves are achieved according to the invention in that means are provided which require a current flow of approximately 120 el. For the individual valve.
The advantage of the invention is that the valves only have to absorb a maximum blocking voltage of 1.05 - Ug (Ug = medium direct voltage), while the circuit described in the main patent has a blocking voltage of 1.58 - Ug. Furthermore, the construction output of the suction throttle is significantly smaller, and the mean transformer output also decreases.
The means, which for the individual valve a current conduction of approximately 120 e1. conditional can consist in that the primary windings are connected in star and a free magnetic return is provided. But you can also connect the valves belonging to each separate secondary winding with the same polarity via a suction throttle.
In the drawings, exemplary embodiments of the subject matter of the invention are shown schematically.
Fig. 1 shows a transformer circuit with four primary windings and the associated four secondary windings per phase.
Fig. 2 shows the circuit as it is used in the presence of a free magnetic return path of the transformer.
3 shows an embodiment with three single-phase transformers which have star-connected primary windings.
In Fig. 1, 1 denotes the triangular-connected primary windings, and 2 denotes the associated separate secondary windings. The valves have the reference number 3. The single-phase suction throttles 4, 4 'are connected between busbars of the same polarity 5 and 5' or 6 and 6 '.
In Figure 2, 7 with the star-connected primary windings, with 8 the associated secondary windings, with 9 the rectifier and 10, 11 denotes the busbars.
In Fig. 3, in which the same parts are provided with the same reference numerals as in Fig. 2, three single-phase transformers 12, 12 'and 12 "are shown with sub-divided windings. Beün transformer 12, the primary and existing on both transformer cores Secondary windings shown in section, but in side view for transformers 12 'and 12 ". The primary windings 7 are in star. switched (star point 0).
The secondary windings 8 lead via the valves 9 to the rails 10 and 11.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH7582059A CH366326A (en) | 1957-12-02 | 1959-07-15 | High-current rectifier system |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH356197T | 1957-12-02 | ||
| CH7582059A CH366326A (en) | 1957-12-02 | 1959-07-15 | High-current rectifier system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH366326A true CH366326A (en) | 1962-12-31 |
Family
ID=25737172
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH7582059A CH366326A (en) | 1957-12-02 | 1959-07-15 | High-current rectifier system |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH366326A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4513363A (en) * | 1982-02-22 | 1985-04-23 | Medar, Inc. | Structure for and method of reducing impedance in multiphase direct current power supplies |
-
1959
- 1959-07-15 CH CH7582059A patent/CH366326A/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4513363A (en) * | 1982-02-22 | 1985-04-23 | Medar, Inc. | Structure for and method of reducing impedance in multiphase direct current power supplies |
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