Eur. Phys. J. Appl. Phys.
Volume 97, 2022
Special issue on ‘Thermal and magnetic studies for efficient electrical machines’, edited by Jean-Philippe Lecointe, Lionel Pichon, Paolo Di Barba and Krzysztof Komeza
|Number of page(s)||7|
|Section||Physics of Energy Transfer, Conversion and Storage|
|Published online||17 June 2022|
Research on ac copper losses in permanent magnet electrical machines with hairpin windings for automotive applications
Mercedes-Benz AG, Untertürkheim, Germany
2 Institute of Electrical Machines (IEM), RWTH Aachen University, Aachen, Germany
* e-mail: firstname.lastname@example.org
Received in final form: 12 February 2022
Accepted: 5 April 2022
Published online: 17 June 2022
In this paper current displacement effects and subsequently ac copper losses in hairpin windings are analyzed in detail for the example of permanent magnet excited electrical machines. The increase of copper losses due to skin- and proximity effects is evaluated across the entire torque-speed map. Their impact on the drive cycle efficiency is discussed for the standardized Worldwide Light Vehicles Test Cycle (WLTC). Moreover, the influence of the rotating magnetic field generated by the rotor’s permanent magnets on the ac copper losses is studied.
© EDP Sciences, 2022
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