2026-04-21T00:27:59Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/99452025-01-17T01:05:28Zcom_10259_9931com_10259_4266com_10259.4_106com_10259_2604col_10259_9932

2025-01-16T12:01:46Z urn:hdl:10259/9945 Detection of Broken Rotor Bars in Nonlinear Startups of Inverter-Fed Induction Motors Fernández Cavero, Vanesa Pons Llinares, Joan Duque Pérez, Óscar Morinigo Sotelo, Daniel Fault detection Induction motors (IM) Inverters Rotors Time-frequency domain analysis Fault detection in induction motors powered by inverters operating in nonstationary regimes remains a challenge. The trajectory in the time–frequency plane of harmonics related to broken rotor bar develops very in proximity to the path described by the fundamental component. In addition, their energy is much lower than the amplitude of the first harmonic. These two characteristics make it challenging to observe them. The Dragon Transform (DT), here presented, is developed to overcome the described problem. In this article, the DT is assessed with nonlinear inverter-fed startups, where its high time and frequency resolutions facilitate the monitoring of fault harmonics even with highly adjacent trajectories to the first harmonic path. 2025-01-16T12:01:46Z 2025-01-16T12:01:46Z 2021-03 info:eu-repo/semantics/article 0093-9994 http://hdl.handle.net/10259/9945 10.1109/TIA.2021.3066317 1939-9367 eng IEEE Transactions on Industry Applications. 2021, V. 57, n. 3, p. 2559-2568 https://doi.org/10.1109/TIA.2021.3066317 info:eu-repo/semantics/openAccess Institute of Electrical and Electronics Engineers