ROLLED IRON CORE TRACTION TRANSFORMER

Title:

ROLLED IRON CORE TRACTION TRANSFORMER

Document Type and Number:

WIPO Patent Application WO/2015/180483

Kind Code:

A1

Abstract:

A rolled iron core traction transformer, comprising an iron core (1); the iron core (1) is formed by splicing two symmetrical annealed iron-core closed single frames (1-1); each iron-core closed single frame (1-1) is formed by sequentially coiling continuous silicon steel sheets; the iron-core closed single frame (1-1) has two iron core column single bodies (1-1-1) having approximately semicircular cross sections; the iron core (1) has two iron core columns (1-2) thereon spliced by the iron core column single bodies (1-1-1) and having approximately circular cross sections; each iron core column (1-2) is sequentially provided with a low-voltage T winding (6), a low-voltage F winding (5) and a high-voltage winding (4) thereon from inside to outside; two sides of each high-voltage winding (4) are respectively provided with a first tapping area and a second tapping area; the first tapping area is provided with low-voltage side high-voltage tapping outgoing lines (16); the second tapping area is provided with high-voltage side high-voltage tapping outgoing lines (18); two low-voltage side high-voltage tapping outgoing lines (16) are connected together via a no-load voltage regulation switch (9); and two high-voltage side high-voltage tapping outgoing lines (18) are connected together via another no-load voltage regulation switch (9). The transformer reduces no-load loss, has a small no-load current, low noise and strong anti-short circuit capability, reduces the electrodynamic force generated by a sudden short circuit, and improves the short circuit tolerance capability of the transformer.

Inventors:

GAO SHIBIN (CN)
WANG BAOGUO (CN)
WU ZHIQIANG (CN)
GAO MINDONG (CN)

Application Number:

PCT/CN2015/000275

Publication Date:

December 03, 2015

Filing Date:

April 20, 2015

Export Citation:

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Assignee:

CHINA RAILWAY CORP (CN)
UNIV JIAOTONG SOUTHWEST (CN)
CHANGZHOU PACIFIC ELECTRIC POWER EQUIPMENT GROUP CO LTD (CN)

International Classes:

H01F29/00

Foreign References:

CN103996507A	2014-08-20
CN203871160U	2014-10-08
CN202067643U	2011-12-07
CN202871487U	2013-04-10
CN101170011A	2008-04-30
CN201072699Y	2008-06-11

Other References: