Abstract
This paper presents three- and two-dimensional finite element analyses (2D, 3D FEA) of the proximity losses in brushless AC permanent magnet motor with concentrated windings operating at high speed. The proximity effect only occurs if the examined conductor is penetrated by an external magnetic field, which is caused by adjacent conductor currents. To reduce the proximity effect several alternative winding layouts including rectangular wires are used. The calculated results of the eddy current losses within end-winding regions are significant and must be considered in the design of stator windings. 3D calculations are compared with 2D ones to show the behaviour of the eddy-current into the conductors and also compared with respect to the power loss and AC resistance. The calculations are in a good agreement with measurements on a prototype high-speed motor.
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Młot, A., Korkosz, M., Łukaniszyn, M. (2015). Investigation of End Winding Proximity Losses in a High-Speed PM Machine. In: Gołębiowski, L., Mazur, D. (eds) Analysis and Simulation of Electrical and Computer Systems. Lecture Notes in Electrical Engineering, vol 324. Springer, Cham. https://doi.org/10.1007/978-3-319-11248-0_14
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DOI: https://doi.org/10.1007/978-3-319-11248-0_14
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