MUMBAI, India, July 7 -- Intellectual Property India has published a patent application (202621051730 A) filed by Indian Institute Of Technology, Indore on April 23, 2026, for System And Method For Stator Winding Fault Detection In Three-Phase Induction Motor.
Inventors include Mankad, Nehansh Devang; Jain, Monika; Goyal, Mohit; Chamoli, Vipul; and B. Prathap Reddy.
The application for the patent was published on July 03, 2026, under issue no. 27/2026.
Abstract: The present invention relates to a sensor-integrated system and method for detection and classification of stator winding faults in a three-phase squirrel-cage induction motor. The system comprises current, speed, vibration and temperature sensors operatively connected to a controller configured to acquire real-time signals. The controller computes time-domain root mean square (RMS) values of phase currents and performs frequency-domain analysis using Fast Fourier Transform (FFT) to obtain fundamental and fault-related frequency components. Square current FFT analysis is performed to obtain further fault-related spectral components. The computed RMS values and spectral components are compared with predefined threshold values to classify stator winding faults. An open-phase fault is identified based on zero current duration, a phase-to-phase fault is identified based on RMS variation, and a turn- to-turn fault is identified based on variation in fundamental peak or fault-related frequency components. The controller prioritizes current and speed signals for reliable fault identification and safe-operation indication.
Disclaimer: Curated by HT Syndication.
