Calculation of eddy current field in the ascending flange for the bushings and tank wall of a large power transformer

被引：21

作者：

Ho, S. L. ^{[1
]}

Li, Y. ^{[2
]}

Tang, R. Y. ^{[2
]}

Cheng, K. W. E. ^{[3
]}

Yang, S. Y. ^{[4
]}

机构：

[1] Hong Kong Polytech Univ, Dept Elect Engn, Hong Kong, Hong Kong, Peoples R China

[2] Shenyang Univ Technol, Res Inst Special Elect Machines, Shenyang 110034, Peoples R China

[3] Hong Kong Polytech Univ, Ind Ctr, Hong Kong, Hong Kong, Peoples R China

[4] Zhejiang Univ, Coll Elect Engn, Hangzhou 310027, Peoples R China

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2008年 / 44卷 / 06期

关键词：

eddy current field; loss; power transformer;

D O I：

10.1109/TMAG.2007.914858

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The 3-D open boundary eddy current field induced by heavy current flowing in the coils and winding leads in large power transformers is calculated. The eddy current loss and local overheating problem in the tank wall and in the ascending flange of bushings are analyzed and reported in this paper. The effectiveness of a magnetic bypass plate near the coil ends for reducing the eddy current loss and local overheating in the clamp plates is discussed.

引用

页码：1522 / 1525

页数：4

共 10 条

[1] ON THE USE OF THE MAGNETIC VECTOR POTENTIAL IN THE FINITE-ELEMENT ANALYSIS OF 3-DIMENSIONAL EDDY CURRENTS [J].

BIRO, O ;

PREIS, K .

IEEE TRANSACTIONS ON MAGNETICS, 1989, 25 (04) :3145-3159

[2] PERFORMANCE OF DIFFERENT VECTOR POTENTIAL FORMULATIONS IN SOLVING MULTIPLY CONNECTED 3-D EDDY-CURRENT PROBLEMS [J].

BIRO, O ;

PREIS, K ;

RENHART, W ;

RICHTER, KR ;

VRISK, G .

IEEE TRANSACTIONS ON MAGNETICS, 1990, 26 (02) :438-441

[3]

DERHER T, 1993, IEEE T MAGN, V29, P1341

[4] 3D EDDY-CURRENT LOSSES CALCULATION IN TRANSFORMER TANKS USING THE FINITE-ELEMENT METHOD [J].

GUERIN, C ;

TANNEAU, G ;

MEUNIER, G .

IEEE TRANSACTIONS ON MAGNETICS, 1993, 29 (02) :1419-1422

[5]

KOPPIKAR DA, 1997, P I ELECT ENG SCI ME, V144, P34

[6]

LI Y, 1999, P CICEM 99, P406

[7] EFFICIENCY OF EDDY-CURRENT SHIELDING OF STRUCTURAL-STEEL SURROUNDING LARGE CURRENTS - A CIRCUIT APPROACH [J].

NAMJOSHI, KV ;

BIRINGER, PP .

IEEE TRANSACTIONS ON MAGNETICS, 1991, 27 (06) :5417-5419

[8] Loss and current distribution in foil windings of transformers [J].

Ram, BS .

IEE PROCEEDINGS-GENERATION TRANSMISSION AND DISTRIBUTION, 1998, 145 (06) :709-716

[9] Transient simulation of power transformers using 3D finite element model coupled to electric circuit equations [J].

Shenyang Univ of Technology, Shenyang, China .

IEEE Transactions on Magnetics, 2000, 36 (4 I) :1417-1420

[10] Eddy current losses and hot-spot evaluation in cover plates of power transformers [J].

Turowski, J ;

Pelikant, A .

IEE PROCEEDINGS-ELECTRIC POWER APPLICATIONS, 1997, 144 (06) :435-440

← 1 →