Impact of air pressure variations on electrical vehicle motor insulation
作者机构：National Demonstration Base for Innovation EntrepreneurshipNew Energy and Electrical Insulation LaboratorySichuan UniversityChengduChina College of Electrical Engineering and Control ScienceNanjing Tech UniversityNanjingChina
出 版 物：《High Voltage》 (高电压（英文）)
年 卷 期：2023年第8卷第5期
页 面：1011-1019页
核心收录：
学科分类：080801[工学-电机与电器] 0808[工学-电气工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学]
基 金：National Natural Science Foundation of China Grant/Award Numbers:52250410350 51977134
主 题：insulation electrical Impact
摘 要：Variation in air pressure severely affects the insulation of electric vehicle(EV)motors,hence weakening the reliability of EVs for safe ***‐polyimide‐Nomex,a typical insulation material for EV motors,was used to investigate the motor insulation performance under different air *** results show that the partial discharge inception voltage is significantly reduced for EV motors operated at lower air pressures,and the probability of partial discharge(PD)occurrence is *** macroscopic results reveal that the active area of the PD expands at low pressure,while the non‐corroded ring appears in the ***,although the number and amplitude of the PD increase significantly with decrease in air pressure,the active area of the PD expands and electrical stress on the insulation per unit area increases ***,when the pressure decreased from 60 to 40 kPa,the endurance life does not show a significant downward ***,the dielectric constant and loss of the low‐pressure samples significantly change during the ageing process,which further indicates critical degradation of the *** aforementioned investigations reveal that the air pressure at different altitudes has a significant impact on the performance of insulation materials.
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