Operation analysis of stress grading system in inverter-driven medium voltage motors

Author

Nguyen Nhat Nam ; Matsumoto, Satoshi

Author_Institution

Shibaura Inst. of Technol., Koto, Japan

fYear

2013

fDate

2-5 Sept. 2013

Firstpage

1

Lastpage

6

Abstract

This paper focuses on analyzing the electric field and 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.

Keywords

AC motors; PWM invertors; electric fields; electrical conductivity; heat transfer; temperature distribution; electric field analysis; electrical conductivity; heat transfer processes; inverter-driven medium voltage motors; medium voltage rotating machines; operation analysis; pulse width modulation voltage source conditions; silicon carbide semiconductive tape; stress grading system; temperature distribution; Analytical models; Converters; Electric fields; Heat transfer; Materials; Pulse width modulation; Stress; Electric field analysis; heat transfer analysis; inverter-driven; nonlinear analysis; partial discharge; stress grading systems;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Engineering Conference (UPEC), 2013 48th International Universities'

Conference_Location

Dublin

Type

conf

DOI

10.1109/UPEC.2013.6715026

Filename

6715026