TY - GEN
T1 - Exciter Axial and Radial Stray Flux Analysis for Rotating Diodes Supervision
AU - Tian, P.
AU - Platero, C. A.
AU - Lee, S. B.
AU - Gyftakis, K. N.
AU - Antonino-Daviu, J. A.
N1 - Funding Information:
ΦThis work was funded by the Spanish ‘Ministerio de Ciencia Innovación y Universidades’ and FEDER program in the framework of the ‘Proyectos de I+D de Generación de Conocimiento del Programa Estatal de Generación de Conocimiento y Fortalecimiento Científico y Tecnológico del Sistema de I+D+i, Subprograma Estatal de Generación de Conocimiento’ (ref: PGC2018-095747-B-I00).
Publisher Copyright:
© 2021 IEEE.
PY - 2021
Y1 - 2021
N2 - Brushless excitation systems have many advantages mainly related to the low maintenance. A failure in the rotating diodes leads to an increase in the exciter field current and an unbalance in the currents supplied by the exciter armature. This unbalance produces additional losses in the exciter and, in some cases, severe damages if the machine is long time under operation with faulty diodes. The supervision of the rotating diodes is essential for the protection of the exciter. In this paper, monitoring of the diodes condition is carried out through the analysis of the exciter stray flux. Numerous tests have been performed in a laboratory synchronous machine measuring the axial and radial flux both in healthy conditions and with one open diode. The results prove that a failure in the diodes can be easily detected as the stray flux component corresponding to the exciter frequency significantly increases in comparison to the healthy conditions. Moreover, the use of any axial, radial or both stray fluxes are suitable for the supervision.
AB - Brushless excitation systems have many advantages mainly related to the low maintenance. A failure in the rotating diodes leads to an increase in the exciter field current and an unbalance in the currents supplied by the exciter armature. This unbalance produces additional losses in the exciter and, in some cases, severe damages if the machine is long time under operation with faulty diodes. The supervision of the rotating diodes is essential for the protection of the exciter. In this paper, monitoring of the diodes condition is carried out through the analysis of the exciter stray flux. Numerous tests have been performed in a laboratory synchronous machine measuring the axial and radial flux both in healthy conditions and with one open diode. The results prove that a failure in the diodes can be easily detected as the stray flux component corresponding to the exciter frequency significantly increases in comparison to the healthy conditions. Moreover, the use of any axial, radial or both stray fluxes are suitable for the supervision.
KW - Alternators
KW - Brushless machines
KW - Fault diagnosis
KW - Generators
KW - Power system protection
UR - http://www.scopus.com/inward/record.url?scp=85123322204&partnerID=8YFLogxK
U2 - 10.1109/SDEMPED51010.2021.9605562
DO - 10.1109/SDEMPED51010.2021.9605562
M3 - Conference contribution
AN - SCOPUS:85123322204
T3 - 2021 IEEE 13th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives, SDEMPED 2021
SP - 86
EP - 91
BT - 2021 IEEE 13th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives, SDEMPED 2021
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 13th IEEE International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives, SDEMPED 2021
Y2 - 22 August 2021 through 25 August 2021
ER -