Influence of Thermal Aging on the Winding Thermal Conductivity in Low Voltage Electrical Machines

Vincenzo Madonna, Paolo Giangrande, Michael Galea

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

Abstract

It is widely acknowledged that thermal aging can have a detrimental effect on the reliability and lifetime expectancy of electrical machines. Long exposure times to high temperature can deteriorate the dielectric properties of the electrical insulation system. At the same time, high temperature can strongly affect thermo-physical properties of polymeric materials, which are commonly employed for the insulation system of low voltage motors. This work experimentally investigates what is the effect of thermal aging on the winding equivalent thermal conductivity in low voltage electrical machines. The life results of accelerated thermal aging tests, carried out on suitable specimens, are processed through a Weibull-Bayesian approach. The variation of the equivalent winding thermal conductivity with thermal aging is ultimately correlated to the cumulative thermal aging of the insulation system.

Original languageEnglish
Title of host publication23rd International Conference on Electrical Machines and Systems, ICEMS 2020
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages123-128
Number of pages6
ISBN (Electronic)9784886864192
DOIs
Publication statusPublished - 24 Nov 2020
Event23rd International Conference on Electrical Machines and Systems, ICEMS 2020 - Hamamatsu, Japan
Duration: 24 Nov 202027 Nov 2020

Publication series

Name23rd International Conference on Electrical Machines and Systems, ICEMS 2020

Conference

Conference23rd International Conference on Electrical Machines and Systems, ICEMS 2020
Country/TerritoryJapan
CityHamamatsu
Period24/11/2027/11/20

Keywords

  • Design of Experiments
  • Design of Insulation
  • Electrical Machines
  • Physics of Failure
  • Thermal Management

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering
  • Mechanical Engineering
  • Safety, Risk, Reliability and Quality
  • Control and Optimization

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