Calculation of end region magnetic field and circulation losses for turbo-generators using a coupled field and circuit equations method

Author

Renyuan, Tang ; Guangren, Xu ; Lijian, Tian ; Zhao Danqun ; Yi, Xu

Author_Institution

Shenyang Polytech. Univ., China

Volume

26

Issue

2

fYear

1990

fDate

3/1/1990 12:00:00 AM

Firstpage

497

Lastpage

500

Abstract

A method using coupled fields and circuit equations is presented to calculate the end-region magnetic field, the current distribution in stator winding strands, and the circulating losses of the stator winding in large turbogenerators. In the calculation, the nonuniform distribution of current density in the stator winding and the influence on the end-region magnetic field of the copper shield are considered. Finally, the effect of the transposed angle on the circulating losses is analyzed. The method is used to calculate the end-region magnetic field and the current of the stator winding strands in a two-pole 300-MW generator. Numerical results are presented

Keywords

current distribution; eddy current losses; magnetic fields; numerical methods; stators; turbogenerators; 300 MW; circulation losses; coupled field and circuit equations method; current density; current distribution; end-region magnetic field; numerical method; stator winding; transposed angle effect; turbogenerators; two-pole generator; Copper; Coupling circuits; Current density; Current distribution; Equations; Magnetic circuits; Magnetic fields; Magnetic shielding; Stator windings; Turbogenerators;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.106362

Filename

106362