GB512788A - Improvements in or relating to three-phase electric transformer and/or choking coil arrangements - Google Patents
Improvements in or relating to three-phase electric transformer and/or choking coil arrangementsInfo
- Publication number
- GB512788A GB512788A GB7922/38A GB792238A GB512788A GB 512788 A GB512788 A GB 512788A GB 7922/38 A GB7922/38 A GB 7922/38A GB 792238 A GB792238 A GB 792238A GB 512788 A GB512788 A GB 512788A
- Authority
- GB
- United Kingdom
- Prior art keywords
- windings
- star
- delta
- winding
- mains
- 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
- H01F27/00—Details of transformers or inductances, in general
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
- H01F27/38—Auxiliary core members; Auxiliary coils or windings
- H01F27/385—Auxiliary core members; Auxiliary coils or windings for reducing harmonics
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Coils Of Transformers For General Uses (AREA)
Abstract
512,788. Transformers; inductances; protective arrangements. SIEMENS-SCHUCKERTWERKE AKT.-GES. March 14, 1938, No 7922. Convention date June 8, 1937. [A Specification was laid open to inspection under Sect. 91 of the Acts, Sept. 14, 1938.] [Classes 38 (ii) and 38 (iv)] In arrangements comprising polyphase transformers and/or choking coils wherein harmonics of the order 6n Π1 are compensated or balanced out by associating a star-connected winding 1, 2, or 3, Fig. 1, with a delta or a zigzag-connected winding 4, 5, or 6, a plurality of windings of each of the two necessary types of connection are employed and their connections to the mains R, S, T are so distributed that inequalities in the amplitudes of the harmonics associated with each phase due to asymmetry of the cores (e.g., due to the cores limbs being in one plane) are balanced out. Fig. 2 shows an alternative arrangement in which the delta or zig-zag connected windings 10, 11 are energized from secondary or tertiary windings 13, 14 inductively associated with star-connected windings 7, 8, and a star-connected winding 12 is energized from a secondary or tertiary winding 17 inductively associated with a delta-connected wiriding 9, the connections of the windings 7, 8, 9 of the mains R, S, T being arranged in accordance with the invention.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE512788X | 1937-06-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB512788A true GB512788A (en) | 1939-09-26 |
Family
ID=6548232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB7922/38A Expired GB512788A (en) | 1937-06-08 | 1938-03-14 | Improvements in or relating to three-phase electric transformer and/or choking coil arrangements |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB512788A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2533225A (en) * | 1944-04-05 | 1950-12-12 | Int Standard Electric Corp | Regulated rectifier |
-
1938
- 1938-03-14 GB GB7922/38A patent/GB512788A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2533225A (en) * | 1944-04-05 | 1950-12-12 | Int Standard Electric Corp | Regulated rectifier |
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