GB1325938A - Electric transformers - Google Patents
Electric transformersInfo
- Publication number
- GB1325938A GB1325938A GB1325938DA GB1325938A GB 1325938 A GB1325938 A GB 1325938A GB 1325938D A GB1325938D A GB 1325938DA GB 1325938 A GB1325938 A GB 1325938A
- Authority
- GB
- United Kingdom
- Prior art keywords
- primary winding
- june
- star
- delta
- laminations
- 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
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F29/00—Variable transformers or inductances not covered by group H01F21/00
- H01F29/08—Variable transformers or inductances not covered by group H01F21/00 with core, coil, winding, or shield movable to offset variation of voltage or phase shift, e.g. induction regulators
- H01F29/10—Variable transformers or inductances not covered by group H01F21/00 with core, coil, winding, or shield movable to offset variation of voltage or phase shift, e.g. induction regulators having movable part of magnetic circuit
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Coils Of Transformers For General Uses (AREA)
- Transformers For Measuring Instruments (AREA)
Abstract
1325938 Transformers FERRANTI Ltd 12 June 1972 [19 June 1971] 28845/71 Heading HIT [Also in Division H2] In a polyphase transformer supplying a low ripple D.C. system and having a three phase (star or delta) primary winding 12A, 12B, 12C, a star connected secondary 16A, 16B, 16C and a delta connected secondary 13A, 13B, and 13C. The voltage output of one of the secondaries is balanced with that of the other secondary by means for affecting the magnetic coupling between each primary winding and one only of its two associated secondary windings. This means may comprise magnetic members (20A, 20B, 20C, Fig. 2, not shown) disposed between each primary winding 12A, 12B, 12C and a respective secondary winding, 16A, 16B or 16C. These magnetic shunts may be of ferrite or of grainoriented steel laminations. They may be movable or fixed in which case the number of laminations necessary is determined by tests prior to manufacture.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2884571 | 1971-06-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1325938A true GB1325938A (en) | 1973-08-08 |
Family
ID=10282087
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1325938D Expired GB1325938A (en) | 1971-06-19 | 1971-06-19 | Electric transformers |
Country Status (4)
Country | Link |
---|---|
DE (1) | DE2227772B2 (en) |
FR (1) | FR2142993B1 (en) |
GB (1) | GB1325938A (en) |
IT (1) | IT958357B (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1982004495A1 (en) * | 1981-06-17 | 1982-12-23 | Masami Sakurai | Star-connection-to-2-delta-connection conversion transformer |
WO1983001340A1 (en) * | 1981-10-12 | 1983-04-14 | Masami Sakurai | Transformer for converting 3-phase power into dc power |
FR3033930A1 (en) * | 2015-03-21 | 2016-09-23 | Emerson Network Power Ind Systems | THREE PHASE TRANSFORMER FOR DODECAPHASE RECTIFIER |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4683527A (en) * | 1986-08-13 | 1987-07-28 | Westinghouse Electric Corp. | AC/DC or DC/AC converter system with outboard commutation inductors |
FR3074378A1 (en) * | 2017-11-30 | 2019-05-31 | Vertiv Industrial Systems Sas | THREE-PHASE TRANSFORMER FOR DODECAPHASE RECTIFIER WITH AUXILIARY CORRECTION OF POWER FACTOR CORRECTION |
-
1971
- 1971-06-19 GB GB1325938D patent/GB1325938A/en not_active Expired
-
1972
- 1972-06-07 DE DE19722227772 patent/DE2227772B2/en active Granted
- 1972-06-13 FR FR7221193A patent/FR2142993B1/fr not_active Expired
- 1972-06-13 IT IT5087372A patent/IT958357B/en active
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1982004495A1 (en) * | 1981-06-17 | 1982-12-23 | Masami Sakurai | Star-connection-to-2-delta-connection conversion transformer |
WO1983001340A1 (en) * | 1981-10-12 | 1983-04-14 | Masami Sakurai | Transformer for converting 3-phase power into dc power |
FR3033930A1 (en) * | 2015-03-21 | 2016-09-23 | Emerson Network Power Ind Systems | THREE PHASE TRANSFORMER FOR DODECAPHASE RECTIFIER |
WO2016151225A1 (en) * | 2015-03-21 | 2016-09-29 | Emerson Network Power Industrial Systems | Three-phase transformer for twelve-phase rectifier |
Also Published As
Publication number | Publication date |
---|---|
DE2227772A1 (en) | 1972-12-21 |
DE2227772B2 (en) | 1975-10-09 |
FR2142993B1 (en) | 1977-12-09 |
FR2142993A1 (en) | 1973-02-02 |
IT958357B (en) | 1973-10-20 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |