Estimation of Secondary Electron Emission Coefficients for Dielectric Barrier Discharge Simulations

IF 3.1 3区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Dielectrics and Electrical Insulation Pub Date : 2025-07-16 DOI:10.1109/TDEI.2025.3589990

Yoshitaka Miyaji;Hirotaku Ishikawa;Yasutomo Otake;Fuma Yamada;Yusuke Kikuchi

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引用次数: 0

Abstract

The inverter-driven motors are increasingly used in industrial and mobility applications, driving the demand for greater performance and reliability. Recent advances in power electronics have raised inverter output frequencies and slew rates, increasing the risk of discharge and insulation failure. A better understanding of discharge phenomena is thus essential. The authors are developing numerical simulations of dielectric barrier discharge (DBD) in twisted pairs of enameled wire. This study investigates the estimation and applicability of the secondary electron emission (SEE) coefficient (

$\gamma $

) to the DBD simulations, addressing the lack of empirical data. As a result, fitting was found effective for estimating

$\gamma $

from discharge voltage measurements. The estimated values were

$4.7\times 10^{\text {-3}}$

for polyimide (PI) and

$7.5\times 10^{\text {-3}}$

for polyethylene (PE). Applying these values in DBD simulations suggests the potential to estimate discharge voltages under various pressure conditions. These findings imply that DBD simulations can enhance the accuracy of predictions of discharge phenomena in twisted pairs of enameled wire.

查看原文本刊更多论文

介质阻挡放电模拟中二次电子发射系数的估计

逆变器驱动的电机越来越多地用于工业和移动应用，推动了对更高性能和可靠性的需求。电力电子技术的最新进展提高了逆变器的输出频率和转换率，增加了放电和绝缘故障的风险。因此，更好地理解放电现象是必要的。作者正在进行漆包线双绞线介质阻挡放电（DBD）的数值模拟。本文研究了二次电子发射（SEE）系数（$\gamma $）在DBD模拟中的估计和适用性，解决了经验数据的缺乏。结果，发现拟合对于从放电电压测量中估计$\gamma $是有效的。聚酰亚胺（PI）的估计值为$4.7\乘以10^{\text{-3}}$，聚乙烯（PE）的估计值为$7.5\乘以10^{\text{-3}}$。在DBD模拟中应用这些值表明在各种压力条件下估计放电电压的潜力。这些结果表明，DBD模拟可以提高漆包线双绞线放电现象预测的准确性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE Transactions on Dielectrics and Electrical Insulation 工程技术-工程：电子与电气

CiteScore

6.00

自引率

22.60%

发文量

309

审稿时长

5.2 months

期刊介绍： Topics that are concerned with dielectric phenomena and measurements, with development and characterization of gaseous, vacuum, liquid and solid electrical insulating materials and systems; and with utilization of these materials in circuits and systems under condition of use.