Details
| Original language | English |
|---|---|
| Title of host publication | 22nd International Symposium on High Voltage Engineering (ISH 2021) |
| Pages | 54-59 |
| Number of pages | 6 |
| ISBN (electronic) | 978-1-83953-605-2 |
| Publication status | Published - 2021 |
| Event | 22nd International Symposium on High Voltage Engineering, ISH 2021 - Xi'an, Virtual, China Duration: 21 Nov 2021 → 26 Nov 2021 |
Abstract
Nowadays, thanks to the recent advances in semiconductor technology, variable frequency drives (VFD) can be implemented in high voltage rotating machines. However, such applications require new considerations both in design as well as manufacturing processes of insulation systems, in particular as to the stator winding. In practice, due to practical problems in electric field sensors, the addressed new electrical stresses can only be measured as for the tangential electric field component over a surface of the insulation system. Finite element methods (FEM) entitle manufacturer to have an accurate estimation of electric fields at arbitrary regions of a defined geometry. In this contribution, three dimensional models of stator winding including both roebel bar and multi-turn coil are developed to highlight the major differences of electric field distribution between two cases of a conventional power frequency supply and a converter-fed supply on the insulation system.
Keywords
- COMSOL MULTIPHYSICS, ROTATING MACHINES, SILICON CARBIDE MICROVARISTORS, STATIC CONVERTER, STRESS GRADING
ASJC Scopus subject areas
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22nd International Symposium on High Voltage Engineering (ISH 2021). 2021. p. 54-59.
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - Finite element analysis of electrical stresses in the insulation system of rotating machines fed by static converters
AU - Sargazi, Reza
AU - Werle, Peter
AU - Akbari, Asghar
PY - 2021
Y1 - 2021
N2 - Nowadays, thanks to the recent advances in semiconductor technology, variable frequency drives (VFD) can be implemented in high voltage rotating machines. However, such applications require new considerations both in design as well as manufacturing processes of insulation systems, in particular as to the stator winding. In practice, due to practical problems in electric field sensors, the addressed new electrical stresses can only be measured as for the tangential electric field component over a surface of the insulation system. Finite element methods (FEM) entitle manufacturer to have an accurate estimation of electric fields at arbitrary regions of a defined geometry. In this contribution, three dimensional models of stator winding including both roebel bar and multi-turn coil are developed to highlight the major differences of electric field distribution between two cases of a conventional power frequency supply and a converter-fed supply on the insulation system.
AB - Nowadays, thanks to the recent advances in semiconductor technology, variable frequency drives (VFD) can be implemented in high voltage rotating machines. However, such applications require new considerations both in design as well as manufacturing processes of insulation systems, in particular as to the stator winding. In practice, due to practical problems in electric field sensors, the addressed new electrical stresses can only be measured as for the tangential electric field component over a surface of the insulation system. Finite element methods (FEM) entitle manufacturer to have an accurate estimation of electric fields at arbitrary regions of a defined geometry. In this contribution, three dimensional models of stator winding including both roebel bar and multi-turn coil are developed to highlight the major differences of electric field distribution between two cases of a conventional power frequency supply and a converter-fed supply on the insulation system.
KW - COMSOL MULTIPHYSICS
KW - ROTATING MACHINES
KW - SILICON CARBIDE MICROVARISTORS
KW - STATIC CONVERTER
KW - STRESS GRADING
UR - http://www.scopus.com/inward/record.url?scp=85174650520&partnerID=8YFLogxK
U2 - 10.1049/icp.2022.0477
DO - 10.1049/icp.2022.0477
M3 - Conference contribution
AN - SCOPUS:85174650520
SP - 54
EP - 59
BT - 22nd International Symposium on High Voltage Engineering (ISH 2021)
T2 - 22nd International Symposium on High Voltage Engineering, ISH 2021
Y2 - 21 November 2021 through 26 November 2021
ER -