GB613045A - Improvements in or relating to transformers - Google Patents
Improvements in or relating to transformersInfo
- Publication number
- GB613045A GB613045A GB30586/44A GB3058644A GB613045A GB 613045 A GB613045 A GB 613045A GB 30586/44 A GB30586/44 A GB 30586/44A GB 3058644 A GB3058644 A GB 3058644A GB 613045 A GB613045 A GB 613045A
- Authority
- GB
- United Kingdom
- Prior art keywords
- windings
- laminations
- winding
- cylindrical
- auto
- 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
- H01F30/02—Auto-transformers
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Coils Of Transformers For General Uses (AREA)
Abstract
613,045. Transformers. AKT.-GES. BROWN, BOVERI, & CIE. Nov. 15, 1945, No. 30586. Convention date, Dec. 15, 1944. [Class 38 (ii)] A single-phase auto-transformer provided with a tertiary winding and adapted for use in the coupling of three-phase, high-tension, longdistance networks, is characterised in that windings arranged on a cylindrical core with laminations arranged radially or in the form of an involute curve receive a reactance voltage of the order of magnitude usual with transformers of separate windings by so dimensioning the width of the auto-connected winding- radially in cylindrical windings and axially in sandwich windings-that they generate a corresponding leakage flux, the whole winding body being cage-wise surrounded by return path packets of laminations arranged all round the core in such manner that the leakage flux produced is practically absorbed by the edges of the laminations of the magnet frame. The tertiary windings are connected in delta across the three phases. Fig. 1 shows the cylindrical core a with U-shaped return laminations rranged radially in packets b which have collector laminations g secured laterally on the intermediate limbs to ensure that the leakage flux is substantially absorbed by the edges of the laminations; the leakage flux distribution is shown in Fig. 1a. The auto-transformer windings, in disc or sandwich form, comprise the high voltage winding c with input lead U<SP>1</SP>, and the lower voltage winding divided into two portions d<SP>1</SP>, d<SP>2</SP> with a common lead u, the latter portions having their outer ends connected to the earthed star-point o. The tertiary winding is divided into two parts e<SP>1</SP>, e<SP>2</SP> with leads x<SP>1</SP>, x<SP>2</SP>. A concentric or cylindrical form of winding may be employed, particularly when the tertiary winding is connected to a synchronous motor for power factor improvement. In this case, the tertiary winding is in two cylindrical parts on the inside and outside respectively of the other cylindrical windings and thus has a double flux field linkage with the auto-connected windings. The collector laminations for the linkage flux are secured on each side of the shorter limbs of the U-shaped laminations.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH613045X | 1944-12-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB613045A true GB613045A (en) | 1948-11-22 |
Family
ID=4523526
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB30586/44A Expired GB613045A (en) | 1944-12-15 | 1945-11-15 | Improvements in or relating to transformers |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE845981C (en) |
GB (1) | GB613045A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7719397B2 (en) | 2006-07-27 | 2010-05-18 | Abb Technology Ag | Disc wound transformer with improved cooling and impulse voltage distribution |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3469220A (en) * | 1967-06-05 | 1969-09-23 | Lev Alexandrovich Mastrjukov | Coreless high voltage electrical reactor |
-
1945
- 1945-11-15 GB GB30586/44A patent/GB613045A/en not_active Expired
-
1948
- 1948-12-22 DE DE1948P0025911 patent/DE845981C/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7719397B2 (en) | 2006-07-27 | 2010-05-18 | Abb Technology Ag | Disc wound transformer with improved cooling and impulse voltage distribution |
US7886424B2 (en) | 2006-07-27 | 2011-02-15 | Abb Technology Ag | Method of forming a disc-wound transformer with improved cooling and impulse voltage distribution |
Also Published As
Publication number | Publication date |
---|---|
DE845981C (en) | 1952-08-07 |
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