Electrical and thermal computation of stress grading system in inverter-driven medium voltage motors

Nguyen Nhat Nam, Satoshi Matsumoto

Research output: Contribution to journalArticle

7 Citations (Scopus)


This paper focuses on analyzing the electric field and the temperature distribution in a typical stress grading system used in medium voltage rotating machines under pulse width modulation voltage source conditions. Two analysis models for electric field and heat transfer processes are developed to take into account the nonlinear relationship between the electric field and the electrical conductivity of Silicon Carbide (SiC) semi-conductive tape. The simulation results give a fundamental background to explain the failure of the stress grading system in inverter-driven medium voltage motors.

Original languageEnglish
Pages (from-to)591-597+7
JournalIEEJ Transactions on Fundamentals and Materials
Issue number11
Publication statusPublished - 2013 Nov 18



  • Electric field analysis
  • Heat transfer analysis
  • Inverter-driven
  • Nonlinear analysis
  • Partial discharge
  • Stress grading systems

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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