ABSTRACT
This chapter provides an extensive series of laboratory tests conducted to support the viability of the instantaneous power analysis and Park vector analysis techniques, the two types of the electrical signature analysis approach. It aims to reveal and discuss the results from the experimentation work for the healthy and faulty motors by examining the various mechanical faults at various severity levels. The chapter discusses the impact of noise variations on the decision-making of the existence of fault signatures in variable frequency drive operation of the motor. Although fixed threshold scheme possesses the capability to diagnose gear fault signatures with good detection accuracy, however, the threshold design strategy still needs continuous human involvement to set the design parameter values for every loading condition. There are various faults that could occur in induction motors, and the focus has been on diagnosing gears, localized bearings, and distributed bearings defects.
