A Study into Converter Characteristics that Affect Failure of Type II Machine Turn Insulation

In this paper, the ageing and degradation of resin-rich mica-based insulation, used in Type II machine turn insulation, is studied to determine the characteristics of converters that affect insulation failure. Dissection of failed turn insulation specimens from voltage endurance tests and findings f...

Full description

Saved in:
Bibliographic Details
Published in:IEEE transactions on dielectrics and electrical insulation 2023-12, Vol.30 (6), p.1-1
Main Authors: Jarrar, Ibrahim M., Chemey, Edward A., Jayaram, Shesha H.
Format: Article
Language:English
Subjects:
ageing
Aging
Conductivity
converter supply
Degradation
Failure
Fatigue tests
Insulation
Insulation life
Mica
overshoot
partial discharge (PD)
rise time
Surface discharges
Switching frequency
type II machine insulation
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In this paper, the ageing and degradation of resin-rich mica-based insulation, used in Type II machine turn insulation, is studied to determine the characteristics of converters that affect insulation failure. Dissection of failed turn insulation specimens from voltage endurance tests and findings from simplified two-cavity specimens are studied at various stages of ageing which are then related to the rise time, switching frequency, and overshoot of the converter supply. The experimental observations and the simulation studies show that ageing and life of turn insulation are found to be strongly associated with the discharge rate and the surface erosion of the insulation. The overlap and interface play a significant role in the failure of taped turn insulation.
ISSN:1070-9878
1558-4135
DOI:10.1109/TDEI.2023.3296337