Theses and Dissertations
Issuing Body
Mississippi State University
Advisor
Grzybowski, Stanislaw
Committee Member
Ginn, Herbert L.
Committee Member
Younan, Nicolas H.
Date of Degree
5-1-2010
Document Type
Graduate Thesis - Open Access
Major
Electrical Engineering
Degree Name
Master of Science
College
James Worth Bagley College of Engineering
Department
Department of Electrical and Computer Engineering
Abstract
It is common practice to perform accelerated aging with 60 Hz ac to determine the lifetime characteristics of insulation used in the machine. Comparable breakdown measurements are performed at different voltage levels and temperatures for the polyimide insulated machine winding under normal operating conditions of 60 Hz ac. The result shows that the time to failure can be represented by the inverse power law and the Arrhenius equation with respect to test voltage and temperature respectively. However, the use of power electronic devices causes harmonics, and spikes that electrically degrade the machine winding insulation. Applied high frequency pulse voltages can be used to study the impact of electrical degradation of the machine winding insulation that exists in electrical machines. Evaluation of change in dielectric strength, partial discharge and breakdown voltage is monitored versus aging caused by high frequency pulse voltage at 90% of operating temperature.
Temporal Coverage
2010-2019
URI
https://hdl.handle.net/11668/14880
Recommended Citation
Chalise, Sajal Raj, "Accelerated Aging Study of Machine Winding Insulation under AC and High Frequency Pulse Voltage Application" (2010). Theses and Dissertations. 354.
https://scholarsjunction.msstate.edu/td/354