Failure prognosis methods in electrical drives - State of the art and future directions

As prognosis of failures of critical electric drives is attracting interest, new tools are emerging. Starting from the well established tools for the fault diagnosis, and expanding to the development of trends, and from them determination of the Remaining Useful Life of a drive leads to timely maintenance of fault mitigation, decreased costs and system reliability. The tools used today for failure prognosis are briefly outlined, and the present needs and challenges, and future research and applications are presented.