Title :
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
fDate :
3/1/1990 12:00:00 AM
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;
Journal_Title :
Magnetics, IEEE Transactions on
