Keywords: induction motors, incipient faults, condition monitoring, motor protection, insulation failure, bearing wear, artificial neural networks, ANNS, fault detection, ANNFD, motor intake current, rotor speed, winding temperature, bearing temperature, noise
ANN based real time incipient fault detection and protection system for induction motor
Artificial neural network (ANN) has its unique advantage in the area of incipient faults detection. This article presents an ANN based real time fault detection and protection system for two types of incipient faults viz. inter-turn insulation failure and bearing wear in single-phase induction motor. The ANN fault detection (ANNFD) program is developed in C++ and implemented using a PC based DSP controller board. The ANN is trained and tested by collecting the online experimental data for five input parameters viz. motor intake current, rotor speed, winding temperature, bearing temperature and noise. The results are compared with the signature of measurable parameters. The results of evaluation indicate that the system produces satisfactory performance for the fault detection as well as for the protection of motor.