Partial discharge analysis of a candidate winding used in electric aircraft propulsion
Hoole, Yovahn Y. R.
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https://hdl.handle.net/2142/116020
Description
Title
Partial discharge analysis of a candidate winding used in electric aircraft propulsion
Author(s)
Hoole, Yovahn Y. R.
Issue Date
2022-06-20
Director of Research (if dissertation) or Advisor (if thesis)
Haran, Kiruba S
Department of Study
Electrical & Computer Eng
Discipline
Electrical & Computer Engr
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
M.S.
Degree Level
Thesis
Keyword(s)
Partial Discharge
Electric Aircraft
Electric Aircraft Propulsion
Electrical Insulation System
Motor Windings
Abstract
This focus of this thesis is twofold, the first objective is to study the partial discharge characteristics of a candidate electrical insulation system for form wound windings in a high frequency electric machine used in aircraft propulsion. To this extent, a thorough analysis via phase resolved discharge patterns, pulse sequence analysis, and trending of discharge parameters through an accelerated aging test are detailed in this thesis. To investigate the impact of low-pressure conditions on aircraft applications, discharge characteristics at pressures of 0.2 atm (cruising altitude), and up to 1 atm are also studied and detailed. The second objective is to investigate the possibility of end-of-life prediction for an electrical insulation system based on partial discharge characteristics. End-of-life prediction fulfills the need for an easily interpretable signal for insulation quality. A barrier to the successful prediction of the remaining lifetime of insulation systems is the statistical nature of the partial discharge phenomenon. This study catalogs various features of a collected partial discharge dataset and analyzes their usability towards the goal of end-of-life prediction with respect to the statistical variance found between samples of the same age.
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