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This paper deals with the stator winding faults monitoring in the vector controlled induction motor drives. Two control methods were taken for analysis, namely the direct field oriented control - DFOC and the direct torque control - DTC. In both control structures the induction motor is supplied form two-level voltage inverter with space vector modulation (SVM). In order to detect the early stage...
This paper deals with the diagnosis of the electrical faults of induction motor operating under the direct field-oriented control. Two different faults are taken into account: stator winding inter-turn short circuit and voltage source inverter transistor damage. The fault diagnostic algorithms are described. Performance of both algorithms is validated in presence of the different kind of damages....
In this paper a computer system for monitoring and diagnostics of the stator windings of the induction motor fed from the frequencies converter is presented. A possibility of stator faults detection using a neural-network detector, possibly at the early stage of the damage, is checked. The experimental research was carried out for a small power induction motor, with different levels of the stator...
This paper deals with monitoring and diagnosis of stator windings damages in vector-controlled induction motor (IM) drive. The article proposes a simple method of shorted turns detection using only virtual control and decoupling signals from the classical Direct Field Oriented Control (DFOC) method. The diagnosis of the stator windings faults is based on the analysis of twice the fundamental frequency...
This paper deals with the incipient stator-winding fault detection of the converter-fed induction motor drive. The fault level is modeled by change of a number of shorted stator-winding turns. The method based on a relative phase shift between the phase voltages and line currents of the converter-fed induction motor is used for the on-line fault monitoring and diagnosis. The fault indicators obtained...
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