@inproceedings{4996828387fa46b388d68d3d1fc81882,
title = "Investigating the Thermal Aging Effect on Hairpin PEEK Insulated Wires through PDIV Measurements",
abstract = "- This study evaluates the turn-to-turn winding insulation of inverter-fed hairpin electrical machines after thermal aging. It measures partial discharge inception voltage (PDIV) under 20 kHz PWM excitation with a 15 ns rise time and a 50% duty cycle. Six types of polyetheretherketone (PEEK)-insulated hairpin wires are tested to identify the best candidate for aerospace applications at up to 25,000 feet and with an 800-volt DC bus. PDIV tests are conducted at room temperature and above PEEK's glass transition temperature (Tg). The results show that fresh PEEK-insulated wires are superior to aged ones when PDIV testing is conducted at ground level and room temperature. However, evaluating aging through PDIV testing at reduced air pressure is not ideal, as fresh samples only deliver slightly higher PDIV values than aged ones at both room temperature and above Tg.",
keywords = "accelerated aging, aerospace materials, hairpin machines, inverter-fed machines, partial discharge inception voltage, partial discharges",
author = "Hadi Naderiallaf and Michele Degano and David Gerada and Chris Gerada",
note = "Publisher Copyright: {\textcopyright} 2024 The Korean Institute of Electrical Engineers (KIEE).; 10th International Conference on Condition Monitoring and Diagnosis, CMD 2024 ; Conference date: 20-10-2024 Through 24-10-2024",
year = "2024",
doi = "10.23919/CMD62064.2024.10766278",
language = "English",
series = "2024 10th International Conference on Condition Monitoring and Diagnosis, CMD 2024",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
pages = "226--229",
booktitle = "2024 10th International Conference on Condition Monitoring and Diagnosis, CMD 2024",
address = "United States",
}