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oai:uvadoc.uva.es:10324/652682025-09-11T09:04:25Zcom_10324_1169com_10324_931com_10324_894col_10324_1363

Demodulation technique for broken rotor bar detection in inverter-fed induction motor under non-stationary conditions García Calva, Tomás Alberto Moríñigo Sotelo, Daniel Camarena Martínez, D. Garcia Perez, Arturo Romero Troncoso, René de Jesús Producción Científica Transient motor current signature analysis has become a mature technique for fault detection in induction motors. By using start-up transients, the whole range of slip in the machine is exploited to generate well- defined fault frequency patterns. However, in the inverter-fed motor case, the fault-patterns is always close to the supply frequency and often of low amplitude. Therefore, it is difficult to distinguish and localize the fault-patterns. In this paper, a novel method is proposed to create a new fault-pattern; the proposed technique can concentrate the fault-harmonic in a specific frequency bandwidth and avoid the spectral leakage by reducing the supply frequency amplitude. The methodology has been validated through experimental tests carried out to detect broken rotor bar in an induction motor started through a voltage source inverter. 2024-01-30T09:06:07Z 2024-01-30T09:06:07Z 2019 info:eu-repo/semantics/article IEEE Transactions on Energy Conversion, vol. 34, no. 3, pp. 1496-1503, Sept. 2019 https://uvadoc.uva.es/handle/10324/65268 10.1109/TEC.2019.2917405 1496 3 1503 IEEE Transactions on Energy Conversion 34 eng https://ieeexplore.ieee.org/document/8716587 info:eu-repo/semantics/restrictedAccess The IEEE The IEEE SI