Experimental evaluation of conductor insulations used in e-mobility traction motors
Paper in proceeding, 2021

Application of high switching frequency converters providing signals with a high level of dv/dt has resulted in an increased stress on the traction motors insulation system. This paper presents an investigation done on the insulation materials developed for traction motors used in E-mobility applications and built using form or hairpin windings. Since the high dv/dt results in a high voltage difference between the conductors, focus in this paper is placed on the conductor insulation referred as 'primary insulation'. An experimental setup is developed and test samples using different insulation materials are made. A comparison between the life-time of the non-corona resistant and corona-resistant materials are made. Additionally, influence of the temperature, voltage and thickness on the insulation system life-time is evaluated. The test results show that corona resistant KaptonĀ® ECRC materials with different thicknesses may be considered as proper candidates for traction motors designed and produced for electrification market fed by high switching frequency converters.

Corona resistant

Railway and traction motor

Partial discharge

E-mobility

Kapton

Insulation

Author

Xiaoliang Huang

Chalmers, Electrical Engineering, Electric Power Engineering, Electrical Machines and Power Electronics

Bowen Jiang

Chalmers, Electrical Engineering, Electric Power Engineering, Electrical Machines and Power Electronics

Mohammad Numair Alhallak

Student at Chalmers

Shafigh Nategh

Chalmers, Electrical Engineering, Electric Power Engineering, Electrical Machines and Power Electronics

Yujing Liu

Chalmers, Electrical Engineering, Electric Power Engineering, Electrical Machines and Power Electronics

Aldo Boglietti

Polytechnic University of Turin

Proceedings - 2021 IEEE Workshop on Electrical Machines Design, Control and Diagnosis, WEMDCD 2021

249-253 9425683

2021 IEEE Workshop on Electrical Machines Design, Control and Diagnosis, WEMDCD 2021
Virtual, Modena, Italy,

Subject Categories

Geotechnical Engineering

Other Materials Engineering

Other Electrical Engineering, Electronic Engineering, Information Engineering

DOI

10.1109/WEMDCD51469.2021.9425683

More information

Latest update

6/8/2021 1