A General Method to Compute the Electric Flux Lines between Two Magnet Wires in Close Contact and Its Application for the Evaluation of Partial Discharge Risks in the Slots of Electric Machines Embedded in Future Transportation Systems
A General Method to Compute the Electric Flux Lines between Two Magnet Wires in Close Contact and Its Application for the Evaluation of Partial Discharge Risks in the Slots of Electric Machines Embedded in Future Transportation Systems作者机构：LAPLACE Université de Toulouse CNRS INPT UPS France
出 版 物：《Advances in Aerospace Science and Technology》 (航空科学与技术（英文）)
年 卷 期：2021年第6卷第1期
页 面：24-42页
学科分类：07[理学] 0701[理学-数学] 070101[理学-基础数学]
主 题：Partial Discharges Dielectric Constant Electric Motor Finite Elements Paschen’s Criterion Ballistic Method
摘 要：The sizing of the Electrical Insulation System (EIS) is an important challenge in electric motors of higher specific power driven by faster inverters. That keeps increasing the electric stress which the winding is submitted in the stator slot. Consequently, Partial Discharges (PD) are more likely to occur. Nowadays, the Paschen’s criterion is widely used to evaluate the risk of partial discharge. It requires the knowledge of electric field lines. This paper presents a method to precisely compute the electric field lines in a two-dimensional (2D) electrostatic problem. The field of study is composed of two magnet wires in close contact. Such configuration is representative of the turn-to-turn interaction in an electric motor slot. The problem is solved using the scalar potential formulation only. The notion of flux tubes is used for the /sp
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