INVESTIGADORES
DE LA BARRERA Pablo Martin
artículos
Título:
Stator inter-turn faults diagnosis in induction motors using zero-sequence signal injection
Autor/es:
M. OTERO; P. M. DE LA BARRERA; G. R. BOSSIO; R. LEIDHOLD
Revista:
IET ELECTRIC POWER APPLICATIONS
Editorial:
INST ENGINEERING TECHNOLOGY-IET
Referencias:
Lugar: London; Año: 2020 p. 1 - 8
ISSN:
1751-8660
Resumen:
This paper presents a strategy for stator inter-turn faults diagnosis in induction motors (IM) operating under time- variable load and time-variable speed conditions. The strategy consists in injecting a zero-sequence high-frequency signal in order to analyse variations in the stator inductances. Incipient stator inter-turn faults are detected by a simple signal processing of the derivatives of the currents. A feature of the strategy is that the zero-sequence high-frequency signal is generated by the inverter that feeds the machine, without modifying the standard space vector modulation of the IM-drive. Experimental results show that faults representing less than 1% of the stator winding can be detected, as well as the phase-location of the fault, validating this proposal.
