US 9,812,252 B2
Rolled iron core traction transformer
Shibin Gao, Sichuan (CN); Baoguo Wang, Beijing (CN); Zhiqiang Wu, Jiangsu (CN); and Mindong Gao, Jiangsu (CN)
Assigned to CHANGZHOU PACIFIC ELECTRIC POWER EQUIPMENT GROUP CO., LTD., Jiangsu (CN); SOUTHWEST JIAOTONG UNIVERSITY, Sichuan (CN); and CHINA RAILWAY CORPORATION, Beijing (CN)
Appl. No. 15/125,531
Filed by CHINA RAILWAY CORPORATION, Beijing (CN); SOUTHWEST JIAOTONG UNIVERSITY, Sichuan (CN); and CHANG-ZHOU PACIFIC ELECTRIC POWER EQUIPMENT GROUP CO., LTD., Jiangsu (CN)
PCT Filed Apr. 20, 2015, PCT No. PCT/CN2015/000275
§ 371(c)(1), (2) Date Sep. 12, 2016,
PCT Pub. No. WO2015/180483, PCT Pub. Date Dec. 3, 2015.
Claims priority of application No. 2014 1 0223674 (CN), filed on May 26, 2014.
Prior Publication US 2017/0076858 A1, Mar. 16, 2017
Int. Cl. H01F 27/24 (2006.01); H01F 30/12 (2006.01); H01F 21/12 (2006.01); H01F 21/02 (2006.01); H01F 37/00 (2006.01); H01F 29/00 (2006.01); H01F 17/02 (2006.01); H01F 27/08 (2006.01); H01F 27/29 (2006.01)
CPC H01F 37/005 (2013.01) [H01F 17/02 (2013.01); H01F 27/08 (2013.01); H01F 27/29 (2013.01); H01F 29/00 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A rolled iron core traction transformer, comprising an iron core comprising two annealed iron-core closed single frames symmetrically spliced together, each iron-core closed single frame being formed of sequentially coiled continuous silicon steel sheets and having two iron-core column single bodies, the iron-core column single bodies having approximately semicircular sections, two iron-core columns which have approximately circular sections and having spliced thereon two iron-core column single bodies, each iron-core column being sequentially provided with a low voltage T winding, a low voltage F winding and a high voltage winding thereon from inside to outside; two sides of each high voltage winding 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, the second tapping area is provided with high voltage side high voltage tapping outgoing lines, two low voltage side high voltage tapping outgoing lines are connected together with a no-load voltage regulation switch, and two high voltage side high voltage tapping outgoing lines are connected together with another no-load voltage regulation switch, the side of the high voltage winding is provided with high voltage winding outgoing lines, low voltage T winding outgoing lines of the low voltage T winding is provided on one side of the opposite direction of the high voltage winding outgoing lines on the low voltage T winding, low voltage F winding outgoing lines of the low voltage F winding is provided on one side of the opposite direction of the high voltage winding outgoing lines on the low voltage F winding.