Effect of voltage distortion on stress grading coatings working at high fundamental frequency

F. P. Espino-Cortés, P. Gómez Zamorano, A. Reyes Rosario

Research output: Contribution to conferencePaper

2 Citations (Scopus)

Abstract

Stress grading coatings used in high voltage rotating machines are considerably affected when the machines are controlled by adjustable speed drives. A special case is found in high speed machines where an excessive heat generation in the stress grading coatings can destroy the material in a short time. The coatings are subject not only to voltage of the fundamental frequency above hundred Hertz, but also to voltage of a higher frequency distortion associated with the switching devices used in the drive. In this work, the performance of stress grading coatings under the combined effect of a high fundamental frequency and voltage distortion is studied. By using a simplified model, which takes into account the nonlinear behavior of the material, the resistive heat for different voltage distortion conditions is computed. The combined high fundamental frequency and voltage distortion significantly increases the heat generation in the stress grading system. ©2007 IEEE.
Original languageAmerican English
Pages159-163
Number of pages142
DOIs
StatePublished - 1 Dec 2007
Externally publishedYes
Event2007 Electrical Insulation Conference and Electrical Manufacturing Expo, EEIC 2007 -
Duration: 1 Dec 2007 → …

Conference

Conference2007 Electrical Insulation Conference and Electrical Manufacturing Expo, EEIC 2007
Period1/12/07 → …

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Coatings
Electric potential
Heat generation

Cite this

Espino-Cortés, F. P., Zamorano, P. G., & Rosario, A. R. (2007). Effect of voltage distortion on stress grading coatings working at high fundamental frequency. 159-163. Paper presented at 2007 Electrical Insulation Conference and Electrical Manufacturing Expo, EEIC 2007, . https://doi.org/10.1109/EEIC.2007.4562610
Espino-Cortés, F. P. ; Zamorano, P. Gómez ; Rosario, A. Reyes. / Effect of voltage distortion on stress grading coatings working at high fundamental frequency. Paper presented at 2007 Electrical Insulation Conference and Electrical Manufacturing Expo, EEIC 2007, .142 p.
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Espino-Cortés, FP, Zamorano, PG & Rosario, AR 2007, 'Effect of voltage distortion on stress grading coatings working at high fundamental frequency', Paper presented at 2007 Electrical Insulation Conference and Electrical Manufacturing Expo, EEIC 2007, 1/12/07 pp. 159-163. https://doi.org/10.1109/EEIC.2007.4562610

Effect of voltage distortion on stress grading coatings working at high fundamental frequency. / Espino-Cortés, F. P.; Zamorano, P. Gómez; Rosario, A. Reyes.

2007. 159-163 Paper presented at 2007 Electrical Insulation Conference and Electrical Manufacturing Expo, EEIC 2007, .

Research output: Contribution to conferencePaper

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AB - Stress grading coatings used in high voltage rotating machines are considerably affected when the machines are controlled by adjustable speed drives. A special case is found in high speed machines where an excessive heat generation in the stress grading coatings can destroy the material in a short time. The coatings are subject not only to voltage of the fundamental frequency above hundred Hertz, but also to voltage of a higher frequency distortion associated with the switching devices used in the drive. In this work, the performance of stress grading coatings under the combined effect of a high fundamental frequency and voltage distortion is studied. By using a simplified model, which takes into account the nonlinear behavior of the material, the resistive heat for different voltage distortion conditions is computed. The combined high fundamental frequency and voltage distortion significantly increases the heat generation in the stress grading system. ©2007 IEEE.

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Espino-Cortés FP, Zamorano PG, Rosario AR. Effect of voltage distortion on stress grading coatings working at high fundamental frequency. 2007. Paper presented at 2007 Electrical Insulation Conference and Electrical Manufacturing Expo, EEIC 2007, . https://doi.org/10.1109/EEIC.2007.4562610