Advanced Diagnosis of Electrical Faults in Wound-Rotor Induction Machines

作者：Gritli Yasser^*; Zarri Luca; Rossi Claudio; Filippetti Fiorenzo; Capolino Gerard Andre; Casadei Domenico

来源：IEEE Transactions on Industrial Electronics, 2013, 60(9): 4012-4024.

DOI：10.1109/TIE.2012.2236992

• Doubly fed induction machine
• fault diagnosis
• rotor windings
• stator windings
• time-varying conditions
• wavelet transform (WT)
• wound-rotor induction machine (WRIM)

The aim of this paper is to present a diagnosis methodology for the detection of electrical faults in three-phase wound-rotor induction machines (WRIMs). In the considered application, the rotor windings are supplied by a static converter for the control of active and reactive power flows exchanged between the machine and the electrical grid. The proposed diagnosis approach is based on the use of wavelet analysis improved by a preprocessing of the rotor-voltage commands under time-varying conditions. Thus, the time evolution of fault components can be effectively analyzed. This paper proves also the importance of the fault components computed from rotor voltages in comparison to those coming from rotor currents under closed-loop operation. A periodical quantification of the fault, issued from the wavelet analysis, has been introduced for accurate stator- or rotor-fault detection. Simulation and experimental results show the validity of the proposed method, leading to an effective diagnosis procedure for both stator and rotor electrical faults in WRIMs.

• 出版日期2013-9