2026-04-21T05:21:38Zhttps://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

00925njm 22002777a 4500 dc Fernández Cavero, Vanesa author Pons Llinares, Joan author Duque Pérez, Óscar author Morinigo Sotelo, Daniel author 2021-03 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. 0093-9994 http://hdl.handle.net/10259/9945 10.1109/TIA.2021.3066317 1939-9367 Fault detection Induction motors (IM) Inverters Rotors Time-frequency domain analysis Detection of Broken Rotor Bars in Nonlinear Startups of Inverter-Fed Induction Motors