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Influence of Repetitive Square Voltage Duty Cycle on the Electrical Tree Characteristics of Epoxy Resin

The application of wide band-gap power electronic devices brings more challenges to insulating packaging technology. Knowing the influence of applied voltage parameters on insulation performance is helpful to evaluate the insulation condition of electric power equipment. In this paper, the effect of...

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Autores principales: Wang, Peng, Hui, Suxin, Akram, Shakeel, Zhou, Kai, Nazir, Muhammad Tariq, Chen, Yiwen, Dong, Han, Javed, Muhammad Sufyan, Ul Haq, Inzamam
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7599930/
https://www.ncbi.nlm.nih.gov/pubmed/32992505
http://dx.doi.org/10.3390/polym12102215
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author Wang, Peng
Hui, Suxin
Akram, Shakeel
Zhou, Kai
Nazir, Muhammad Tariq
Chen, Yiwen
Dong, Han
Javed, Muhammad Sufyan
Ul Haq, Inzamam
author_facet Wang, Peng
Hui, Suxin
Akram, Shakeel
Zhou, Kai
Nazir, Muhammad Tariq
Chen, Yiwen
Dong, Han
Javed, Muhammad Sufyan
Ul Haq, Inzamam
author_sort Wang, Peng
collection PubMed
description The application of wide band-gap power electronic devices brings more challenges to insulating packaging technology. Knowing the influence of applied voltage parameters on insulation performance is helpful to evaluate the insulation condition of electric power equipment. In this paper, the effect of repetitive square wave voltage duty cycle on the growth characteristics of electrical trees in epoxy resin was studied. The experimental results show that the square wave voltage duty cycle has a significant influence on treeing features. The electrical tree proportion initiation has shown a decreasing trend, and the shape of the electrical tree changes from pine-like to branch-like by increasing the duty cycles. The length and damaged area of electrical tree increased with the increase in the duty cycle up to 10% and then decrease by increasing the duty cycle higher than 30%. It indicates that a low duty cycle will enhance the electron injection and accumulate space charges and thus accelerate electrical tree development. Under short duty cycles, the electric field due to the shielding effect near the needle tip suppresses the electrical tree growth, which results in treeing growth stagnation. The obtained results are helpful to keep these parameters in mind during the design of epoxy-based insulation such high-voltage rotating machines and power electronic device packaging.
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spelling pubmed-75999302020-11-01 Influence of Repetitive Square Voltage Duty Cycle on the Electrical Tree Characteristics of Epoxy Resin Wang, Peng Hui, Suxin Akram, Shakeel Zhou, Kai Nazir, Muhammad Tariq Chen, Yiwen Dong, Han Javed, Muhammad Sufyan Ul Haq, Inzamam Polymers (Basel) Article The application of wide band-gap power electronic devices brings more challenges to insulating packaging technology. Knowing the influence of applied voltage parameters on insulation performance is helpful to evaluate the insulation condition of electric power equipment. In this paper, the effect of repetitive square wave voltage duty cycle on the growth characteristics of electrical trees in epoxy resin was studied. The experimental results show that the square wave voltage duty cycle has a significant influence on treeing features. The electrical tree proportion initiation has shown a decreasing trend, and the shape of the electrical tree changes from pine-like to branch-like by increasing the duty cycles. The length and damaged area of electrical tree increased with the increase in the duty cycle up to 10% and then decrease by increasing the duty cycle higher than 30%. It indicates that a low duty cycle will enhance the electron injection and accumulate space charges and thus accelerate electrical tree development. Under short duty cycles, the electric field due to the shielding effect near the needle tip suppresses the electrical tree growth, which results in treeing growth stagnation. The obtained results are helpful to keep these parameters in mind during the design of epoxy-based insulation such high-voltage rotating machines and power electronic device packaging. MDPI 2020-09-27 /pmc/articles/PMC7599930/ /pubmed/32992505 http://dx.doi.org/10.3390/polym12102215 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Wang, Peng
Hui, Suxin
Akram, Shakeel
Zhou, Kai
Nazir, Muhammad Tariq
Chen, Yiwen
Dong, Han
Javed, Muhammad Sufyan
Ul Haq, Inzamam
Influence of Repetitive Square Voltage Duty Cycle on the Electrical Tree Characteristics of Epoxy Resin
title Influence of Repetitive Square Voltage Duty Cycle on the Electrical Tree Characteristics of Epoxy Resin
title_full Influence of Repetitive Square Voltage Duty Cycle on the Electrical Tree Characteristics of Epoxy Resin
title_fullStr Influence of Repetitive Square Voltage Duty Cycle on the Electrical Tree Characteristics of Epoxy Resin
title_full_unstemmed Influence of Repetitive Square Voltage Duty Cycle on the Electrical Tree Characteristics of Epoxy Resin
title_short Influence of Repetitive Square Voltage Duty Cycle on the Electrical Tree Characteristics of Epoxy Resin
title_sort influence of repetitive square voltage duty cycle on the electrical tree characteristics of epoxy resin
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7599930/
https://www.ncbi.nlm.nih.gov/pubmed/32992505
http://dx.doi.org/10.3390/polym12102215
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