Title :
Analysis and diagnosis on open-circuit fault of diode rectifier in 12-phase synchronous generator system
Author :
Ziguo Huang ; Yuguang Sun ; Shanming Wang ; Xiwen Yu
Author_Institution :
Dept. of Electr. Eng., Tsinghua Univ., Beijing, China
Abstract :
This paper deals with a 12-phase synchronous generator with open-circuit fault of diode rectifier. Considering all space harmonics of air-gap magnetic field and the changing circuit topology, the mathematical model of the system is established based on the multiloop theory of machine. A series of experiments have been conducted on a 4-kW 12-phase synchronous model machine. The acceptable agreement between the simulated and experimental result validates the modeling process. Based on the analysis, the features of the open-circuit fault of rectifier are summarized. Finally, the algorithm of DC voltage odd harmonic detection is raised.
Keywords :
diodes; fault diagnosis; machine testing; magnetic fields; rectifiers; synchronous generators; DC voltage odd harmonic detection; air-gap magnetic field; circuit topology; diode rectifier; multiloop theory; open-circuit fault; power 4 kW; space harmonics; synchronous model machine; twelve-phase synchronous generator system; Circuit faults; Equations; Harmonic analysis; Mathematical model; Rectifiers; Stator windings; Windings; 12-phase synchronous generator; diagnosis; fault analysis; multiloop theory; open-circuit; rectifier; transient modeling;
Conference_Titel :
Power Electronics and Applications (EPE'14-ECCE Europe), 2014 16th European Conference on
Conference_Location :
Lappeenranta
DOI :
10.1109/EPE.2014.6910864
