Reliability vs. performances of electrical machines: Partial discharges issue

Vincenzo Madonna, Paolo Giangrande, Weiduo Zhao, Giampaolo Buticchi, He Zhang, Chris Gerada, Michael Galea

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

16 Citations (Scopus)

Abstract

In recent years, transportation electrification represents the way forward for reducing CO2 emissions and cutting down toxic particles. Hence, efficient powertrains employing energy sources other than fossil fuels are becoming increasingly popular. In this scenario, compact and lightweight electrical machines are required, particularly in aerospace and automotive applications. While the trend is to increment electrical machines torque and power density, their reliability is also expected to be enhanced, due to the safety-critical nature of these applications. In low voltage electrical machines, the partial discharges occurrence might irreversibly compromise the electric drive functionality. Indeed, once partial discharges are incepted in organic insulating materials, they can cause an out-of-service within short time. This paper investigates the impact of a partial discharge-free insulation's design on the performance of a traction motor. The presented study combines finite element models and the Paschen's law for air at sea level pressure. The developed insulation models are experimentally validated via measurements on custom-built prototypes.

Original languageEnglish
Title of host publicationProceedings - 2019 IEEE Workshop on Electrical Machines Design, Control and Diagnosis, WEMDCD 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages77-82
Number of pages6
ISBN (Electronic)9781538681077
DOIs
Publication statusPublished - Apr 2019
Event2019 IEEE Workshop on Electrical Machines Design, Control and Diagnosis, WEMDCD 2019 - Athens, Greece
Duration: 22 Apr 201923 Apr 2019

Publication series

NameProceedings - 2019 IEEE Workshop on Electrical Machines Design, Control and Diagnosis, WEMDCD 2019

Conference

Conference2019 IEEE Workshop on Electrical Machines Design, Control and Diagnosis, WEMDCD 2019
Country/TerritoryGreece
CityAthens
Period22/04/1923/04/19

Keywords

  • Automotive
  • Electrical Machines
  • Organic Insulation
  • PD
  • Partial Discharges Inception
  • Paschen's law
  • Physics of failure
  • Reliability

ASJC Scopus subject areas

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

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