Inter-turn short circuit fault detection of wound rotor induction machines using Bispectral analysis

System identification and control of an wound rotor AC induction machine for wind turbine

“…Equivalent circuit of a wound rotor induction machine is also provided in Figure 1. [11,12] R sa , R sb , R sc are the winding resistances of the stator phases a, b and c, R ra R rb R rc are the winding resistances of the rotor phases a, b and c, L sa , L sb, L sc are the selfinductances of the stator phases a, b and c, L ra, L rb, L rc are the self-inductances of the rotor phases a, b and c. L s(x,y) are the stator mutual inductances between phases for x= a, b and c , y= a, b and c and x y. L r(x,y) are the rotor mutual inductances between phases for x= a, b and c , y= a, b and c and x y. i sa , i sb , i sc are the stator current of the phases a, b and c, i ra , i rb , i rc are the rotor current of the phases a, b and c, v sa , v sb , v sc are the stator voltage of the phases a, b and c, emf sa , emf sb , emf s are the electromotive forces on the stator side for the phases a, b and c, emf ra , emf rb , emf rc are the electromotive forces on the rotor side for the phases a, b and c respectively.…”

Analysis of rotor and stator winding inter-turn faults in WRIM using simulated MEC model and experimental results

“…Spectral and bispectral frequency analysis of stator and rotor current waveforms are employed for fault detections of WRIMs [27][28][29] while for the same purpose, a new digital neural network is used [30]. The use of abc time-domain model [31,32] qd model [33] under stator and rotor winding fault condition in WRIMs are reported in the literature.…”

Application of higher order spectral analysis for rotor broken bar detection in induction machines

“…This tool has already demonstrated its efficiency in many detection applications including machinery diagnosis for various mechanical faults [5]. Other applications include the usage of the bi-spectral analysis to detect the fatigue cracks in beams [12], gears [16], stator inter-turn faults [17], and bearings [18]. It has been also used in the case of the coupling assessment between modes in a power generation system [19].…”