Detection of AC machine winding deterioration using electrically excited vibrations

Presented in this paper is a theoretical review of the relationships that should exist between electrical winding parameters and the mechanical vibration of AC machine elements under normal and faulted operating conditions. Also included are data from an experimental study that relate stator vibration and bearing vibration to selected winding faults in a synchronous machine. Consideration of these results indicates a significant relationship between electrical deterioration and mechanical vibration and, thus, provides the motivation for additional study and a basis for future applications.