GB881869A - Improvements in or relating to direct current power sources employing rectifying systems - Google Patents
Improvements in or relating to direct current power sources employing rectifying systemsInfo
- Publication number
- GB881869A GB881869A GB22746/61A GB2274661A GB881869A GB 881869 A GB881869 A GB 881869A GB 22746/61 A GB22746/61 A GB 22746/61A GB 2274661 A GB2274661 A GB 2274661A GB 881869 A GB881869 A GB 881869A
- Authority
- GB
- United Kingdom
- Prior art keywords
- rectifiers
- voltage
- relating
- direct current
- current power
- 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
- 239000004065 semiconductor Substances 0.000 abstract 2
- 230000002950 deficient Effects 0.000 abstract 1
- 238000005259 measurement Methods 0.000 abstract 1
- 239000000523 sample Substances 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- 238000010998 test method Methods 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
- H02H7/12—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers
- H02H7/1203—Circuits independent of the type of conversion
- H02H7/1206—Circuits independent of the type of conversion specially adapted to conversion cells composed of a plurality of parallel or serial connected elements
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Rectifiers (AREA)
Abstract
881,869. Rectifying. COLUMBIA-SOUTHERN CHEMICAL CORPORATION. Nov. 20, 1957 [Aug. 22, 1957], No. 22746/61. Divided out of 881,867. Class 38 (2). [Also in Group XXXVI] In a method of testing a rectifying equipment e.g. as disclosed in Specification 881,867 which comprises a number of parallel-connected semiconductor bridges 601, 602, 603, 604 each arm of which consists of a number of series-connected semi-conductor rectifiers, voltage measurements are first taken between corresponding rectifiers in corresponding arms of two different bridges as at 611, and then, if the voltage is not zero, the voltage across the individual rectifiers in an arm are measured to determine defective rectifiers which may then be replaced. Failure of a rectifier is manifested by a fall in its resistance. The right-hand side shows an arrangement for examining four bridge circuits. Fuses 610 are included in the bridge arms. The rectifiers are arranged in cabinets whose walls have holes through which testing probes may be inserted (Fig. 2, not shown).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US881869XA | 1957-08-22 | 1957-08-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB881869A true GB881869A (en) | 1961-11-08 |
Family
ID=22209876
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB22746/61A Expired GB881869A (en) | 1957-08-22 | 1957-11-20 | Improvements in or relating to direct current power sources employing rectifying systems |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB881869A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3577753A1 (en) * | 2017-01-31 | 2019-12-11 | Vestas Wind Systems A/S | Dc-dc converter and dc-dc conversion method |
-
1957
- 1957-11-20 GB GB22746/61A patent/GB881869A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3577753A1 (en) * | 2017-01-31 | 2019-12-11 | Vestas Wind Systems A/S | Dc-dc converter and dc-dc conversion method |
| US10992233B2 (en) | 2017-01-31 | 2021-04-27 | Vestas Wind Systems A/S | Sub-resonant mode dual control of DC-DC converter with secondary-side resonant tank |
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