A Model-Based Strategy for Interturn Short-Circuit Fault Diagnosis in PMSM
- Mazzoletti, Manuel Armando
- Bossio, Guillermo Rubén
- de Angelo, Cristian Hernan
- Espinoza-Trejo, Diego R.
DOIAbstract
A model-based method for interturn short-circuit fault detection and isolation in permanent magnet synchronous machines (PMSMs) is proposed in this paper. The fault detection is realized based on a residual current vector (RCV) generated by the difference between the measured stator currents and the stator currents estimated by a state observer. In order to avoid false alarms due to possible undesired perturbations, the sequence decomposition of the RCV is performed by employing different reference-frames. Thus, the proposed RCV allows the correct detection of interturn short-circuit faults and quantification of the fault severity in any faulty stator-phase winding. Moreover, since the back-EMF generated by the magnets is proportional to th...
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