Analysis of sudden unbalanced short circuits in synchronous machines by applying the principle of harmonic balance

Author

Weiming, Ma ; Junzhong, Sun ; Gaifan, Zhang ; Xusheng, Wu

Author_Institution

Naval Univ. of Eng., Wuhan, China

Volume

1

fYear

2001

fDate

2001

Firstpage

396

Abstract

The fundamental idea of the principle of harmonic balance is introduced; the simplified flux-linkage and voltage equations of 3-phase synchronous machines were obtained by means of some necessary assumptions; then by applying the principle of harmonic balance, the sudden line-to-line unbalanced short circuit of 3-phase synchronous machines were analyzed concisely, the magnitudes of the odd and even harmonics of short-circuit currents and their time constants of decay were gained at the same time. The method can also be used in the analysis of unbalanced short circuits of 6-phase and other multiphase machines

Keywords

harmonic analysis; machine theory; short-circuit currents; synchronous machines; 3-phase synchronous machines; 6-phase machines; even harmonics magnitude; flux-linkage; harmonic balance; line-to-line unbalanced short circuit; multiphase machines; odd harmonics magnitude; short-circuit current harmonics; time constants; voltage equations; Circuit analysis; Circuit faults; DC generators; Differential algebraic equations; Harmonic analysis; Power generation; Stator windings; Sun; Synchronous machines; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Machines and Systems, 2001. ICEMS 2001. Proceedings of the Fifth International Conference on

Conference_Location

Shenyang

Print_ISBN

7-5062-5115-9

Type

conf

DOI

10.1109/ICEMS.2001.970696

Filename

970696