Analysis of the critical stresses in high-voltage composite winding insulations under thermal loads

Research output: Contribution to journal › Review article › peer-review

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Analysis of the critical stresses in high-voltage composite winding insulations under thermal loads. / Pothukuchi, Harish Kalyan Ram; Fuchs, Peter Filipp; Schuecker, Clara.
In: Journal of composite materials, Vol. 54.2020, No. 15, 21.11.2019, p. 2073-2084.

Research output: Contribution to journal › Review article › peer-review

Harvard

Pothukuchi, HKR, Fuchs, PF & Schuecker, C 2019, 'Analysis of the critical stresses in high-voltage composite winding insulations under thermal loads', Journal of composite materials, vol. 54.2020, no. 15, pp. 2073-2084. https://doi.org/10.1177/0021998319887779

APA

Pothukuchi, H. K. R., Fuchs, P. F., & Schuecker, C. (2019). Analysis of the critical stresses in high-voltage composite winding insulations under thermal loads. Journal of composite materials, 54.2020(15), 2073-2084. https://doi.org/10.1177/0021998319887779

Vancouver

Pothukuchi HKR, Fuchs PF, Schuecker C. Analysis of the critical stresses in high-voltage composite winding insulations under thermal loads. Journal of composite materials. 2019 Nov 21;54.2020(15):2073-2084. doi: 10.1177/0021998319887779

Author

Pothukuchi, Harish Kalyan Ram ; Fuchs, Peter Filipp ; Schuecker, Clara. / Analysis of the critical stresses in high-voltage composite winding insulations under thermal loads. In: Journal of composite materials. 2019 ; Vol. 54.2020, No. 15. pp. 2073-2084.

Bibtex - Download

@article{951f9b12e1df4c879cf0b3f86039f50c,
title = "Analysis of the critical stresses in high-voltage composite winding insulations under thermal loads",
abstract = "Stator bars are the critical components in generators with respect to their lifespan. The winding insulation may be susceptible to damage under excessive alternating temperature loads incurred by a high number of start–stop cycles and heavy overloads. The differences in thermal expansion between the different components in the multi-layered winding insulation lead to thermal stresses. This work deals with the thermo-mechanical characterisation of the individual constituents of the winding insulation and the finite element model of a stator bar, based on the material data obtained from the tests that enable the identification of the thermal stresses leading to delamination over thermal cycles. The out-of-plane and the interfacial shear stress are found to be in the critical range with respect to the relatively low cohesive strength of the included individual mica layers.",
author = "Pothukuchi, {Harish Kalyan Ram} and Fuchs, {Peter Filipp} and Clara Schuecker",
note = "Publisher Copyright: {\textcopyright} The Author(s) 2019.",
year = "2019",
month = nov,
day = "21",
doi = "10.1177/0021998319887779",
language = "English",
volume = "54.2020",
pages = "2073--2084",
journal = "Journal of composite materials",
issn = "0021-9983",
publisher = "SAGE Publications Ltd",
number = "15",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - Analysis of the critical stresses in high-voltage composite winding insulations under thermal loads

AU - Pothukuchi, Harish Kalyan Ram

AU - Fuchs, Peter Filipp

AU - Schuecker, Clara

N1 - Publisher Copyright: © The Author(s) 2019.

PY - 2019/11/21

Y1 - 2019/11/21

N2 - Stator bars are the critical components in generators with respect to their lifespan. The winding insulation may be susceptible to damage under excessive alternating temperature loads incurred by a high number of start–stop cycles and heavy overloads. The differences in thermal expansion between the different components in the multi-layered winding insulation lead to thermal stresses. This work deals with the thermo-mechanical characterisation of the individual constituents of the winding insulation and the finite element model of a stator bar, based on the material data obtained from the tests that enable the identification of the thermal stresses leading to delamination over thermal cycles. The out-of-plane and the interfacial shear stress are found to be in the critical range with respect to the relatively low cohesive strength of the included individual mica layers.

AB - Stator bars are the critical components in generators with respect to their lifespan. The winding insulation may be susceptible to damage under excessive alternating temperature loads incurred by a high number of start–stop cycles and heavy overloads. The differences in thermal expansion between the different components in the multi-layered winding insulation lead to thermal stresses. This work deals with the thermo-mechanical characterisation of the individual constituents of the winding insulation and the finite element model of a stator bar, based on the material data obtained from the tests that enable the identification of the thermal stresses leading to delamination over thermal cycles. The out-of-plane and the interfacial shear stress are found to be in the critical range with respect to the relatively low cohesive strength of the included individual mica layers.

UR - http://www.scopus.com/inward/record.url?scp=85075344324&partnerID=8YFLogxK

U2 - 10.1177/0021998319887779

DO - 10.1177/0021998319887779

M3 - Review article

VL - 54.2020

SP - 2073

EP - 2084

JO - Journal of composite materials

JF - Journal of composite materials

SN - 0021-9983

IS - 15

ER -

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