GB122431A - Improvements in or relating to Electrical Transformers. - Google Patents
Improvements in or relating to Electrical Transformers.Info
- Publication number
- GB122431A GB122431A GB1583717A GB1583717A GB122431A GB 122431 A GB122431 A GB 122431A GB 1583717 A GB1583717 A GB 1583717A GB 1583717 A GB1583717 A GB 1583717A GB 122431 A GB122431 A GB 122431A
- Authority
- GB
- United Kingdom
- Prior art keywords
- phase
- transformers
- transformer
- secondaries
- current
- 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
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F30/00—Fixed transformers not covered by group H01F19/00
- H01F30/06—Fixed transformers not covered by group H01F19/00 characterised by the structure
- H01F30/12—Two-phase, three-phase or polyphase transformers
- H01F30/14—Two-phase, three-phase or polyphase transformers for changing the number of phases
-
- 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
- H02M5/14—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 between circuits of different phase number
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Ac-Ac Conversion (AREA)
Abstract
122,431. Berry, F. E. Oct. 30, 1917. Phase, changing; polyphase transformers.-A transformer for changing three-phase to four-phase current has a transformer A, B, C for each of the three phases, the primaries a, b being of the same size and the primary c smaller. Two secondary windings are used with each of the primaries a, band one secondary with the primary c. One of the ends of each of the four secondaries on the transformers A, B is connected to the remaining secondary as shown, the four-phase current being taken from the remaining ends of the four secondaries, the mid point 6 of the secondary on the transformer C being the neutral point. As applied to an electric furnace, the point 6 is connected to a hearth electrode, but with balanced loads between the phases no current will flow in the hearth electrode. In an arrangement for converting three-phase to two-phase, the secondary of the transformer C is also divided into two, the four ends being connected to four of the ends of the secondaries on the transformers A, B. The remaining ends of the latter secondaries furnish the two-phase supply. The transformers may be used for converting two or four-phase current into three-phase. Instead of three single-phase transformers, a three-phase transformer may be used.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1583717A GB122431A (en) | 1917-10-30 | 1917-10-30 | Improvements in or relating to Electrical Transformers. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1583717A GB122431A (en) | 1917-10-30 | 1917-10-30 | Improvements in or relating to Electrical Transformers. |
Publications (1)
Publication Number | Publication Date |
---|---|
GB122431A true GB122431A (en) | 1919-01-30 |
Family
ID=32346951
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1583717A Expired GB122431A (en) | 1917-10-30 | 1917-10-30 | Improvements in or relating to Electrical Transformers. |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB122431A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107294115A (en) * | 2017-07-24 | 2017-10-24 | 西南交通大学 | A kind of four phase five-wire system low voltage distribution transformers |
-
1917
- 1917-10-30 GB GB1583717A patent/GB122431A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107294115A (en) * | 2017-07-24 | 2017-10-24 | 西南交通大学 | A kind of four phase five-wire system low voltage distribution transformers |
CN107294115B (en) * | 2017-07-24 | 2023-04-07 | 西南交通大学 | Four-phase five-wire system low-voltage distribution transformer |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US6101113A (en) | Transformers for multipulse AC/DC converters | |
US3573602A (en) | Three-phase inverter | |
US3193758A (en) | Electric supply arrangements | |
US2359768A (en) | Phase converter | |
GB122431A (en) | Improvements in or relating to Electrical Transformers. | |
US717488A (en) | Method of transforming alternating currents. | |
US3440516A (en) | Transformer and capacitor apparatus for three-phase electrical systems | |
US2103996A (en) | Constant-current magnetic bridge | |
US2419464A (en) | Electronic power conversion apparatus | |
US1698283A (en) | Mechanical rectifier | |
US2195296A (en) | Electric translating system | |
US1957230A (en) | Electric valve converting system | |
GB112829A (en) | Improvements in or relating to Polyphase Electric Transformers. | |
US861031A (en) | Electric induction-furnace. | |
SU584416A1 (en) | Three-phase inverter for supplying zero-wire load | |
SU866674A1 (en) | Three-phase inverter | |
US2339103A (en) | Transformer system | |
US3210635A (en) | Transformer-rectifier circuit | |
US2106826A (en) | Electric current conversion system | |
US1860175A (en) | Two-phase circuit connection for vapor electric devices | |
US2060650A (en) | Electric power converting apparatus | |
US905995A (en) | Alternating-current motor. | |
US2341958A (en) | Regulating transformer | |
SU955448A1 (en) | Inverter | |
GB562289A (en) | Improvements in and relating to transformer regulating arrangements for polyphase electric supply systems |