Lifetime consumption and degradation analysis of the winding insulation of electrical machines

C. Sciascera, M. Galea, P. Giangrande, C. Gerada

Research output: Chapter in Book/Conference proceedingConference contributionpeer-review

38 Citations (Scopus)

Abstract

In this paper, a novel multi-stress model which estimates the lifetime of the winding insulation relative to its duty cycle is proposed and investigated. With an adequate implementation of this model, then an electrical machine can be designed not only in terms of its performance requirements, but also considering the associated reliability and lifetime aspects. Since thermal and thermo-mechanical stresses are considered as the main ageing factors, the model is particularly suited for low voltage, low duty cycle machines. The determination of the model parameters is based on the results of accelerated thermo-mechanical ageing tests, whose procedure is thoroughly reported in the paper. The results of the accelerated ageing tests show that the effect of thermomechanical ageing is significant even for small size, random wound windings under fast temperature rise.

Original languageEnglish
Title of host publicationIET Conference Publications
PublisherInstitution of Engineering and Technology
EditionCP684
ISBN (Electronic)9781785611889
ISBN (Print)9781785611889
DOIs
Publication statusPublished - 2016
Externally publishedYes
Event8th IET International Conference on Power Electronics, Machines and Drives, PEMD 2016 - Glasgow, United Kingdom
Duration: 19 Apr 201621 Apr 2016

Publication series

NameIET Conference Publications
NumberCP684
Volume2016

Conference

Conference8th IET International Conference on Power Electronics, Machines and Drives, PEMD 2016
Country/TerritoryUnited Kingdom
CityGlasgow
Period19/04/1621/04/16

Keywords

  • Electrical machines
  • Multi-stress ageing
  • Thermo-mechanical ageing
  • Winding insulation lifetime

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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