Title: Monitoring Applications for Inverter Fed Drives
Lecturer: Prof. Thomas G. Habetler (Georgia Tech, Atlanta, USA)
Date: July 21, 2010, 11:00 am
Location: Zeichensaal, 3rd floor, Gußhausstraße 25-29/372, 1040 Vienna
Outline
An electric drive consists of an electric machine, which converts electrical power to mechanical power, power electronics to operate the machine and a unit to control the motion of the drive. These are the components of the drive. Parts of each of these components could fail and give rise to specific failure scenarios.
The task of identifying and classifying drive failures from certain measured quantities is called fault detection. Under some conditions, fault detection may require certain safety protection actions. Example: A turn to turn short circuit in the stator winding of the machine is one example for a safety critical issue. If the short remains for a certain time, parts of the winding will be destroyed. This in turn could cause winding failures that lead to a larger short circuit current which may result in the failure and outage of the entire drive. In this sense, a safety critical issue is a time critical issue. If the failure cannot be detected within a certain time, the drive will be damaged and fails. It is thus highly demanded to accurately detect safety critical faults and to protect the drive (and the application) in this case.
The planned lecture will summarize the most recent advances in monitoring and diagnostics of electric machines, power electronics and drives. This seminar is intended to be announced at the Vienna University of Technology as well.