preprints.org > engineering > electrical and electronic engineering > doi: 10.20944/preprints202312.1678.v1

Preprint Review Version 1 Preserved in Portico This version is not peer-reviewed

Version 1 : Received: 21 December 2023 / Approved: 21 December 2023 / Online: 22 December 2023 (02:10:36 CET)

The extreme environmental issues and the resulting needs to save energy have turned the attention to electrification of energy applications. One of the key components involved in energy efficiency improvements is the appropriate conception and manufacturing of electric machines. This paper overviews the electromagnetic analysis governing the behavior of permanent magnets that enabled substantial efficiency gains in recent electric machine developments. Particular emphasis is given to model the properties and losses developed in permanent magnets in the emerging high speed applications. In addition, the investigation of properties and harmonic losses related to ferromagnetic materials constituting the machine magnetic circuits are equally analyzed and discussed. The experimental validation of the implemented methodologies and developed models with respect to the obtained precision is reported. The introduction of mixed numerical techniques based on the finite element method intended to appropriately represent the different physical phenomena encountered is outlined and discussed. Finally, fast and accurate simulation techniques including aggregated lumped parameter models considering harmonic losses associated with inverter supplies are commented.

Permanent-Magnets; Electric Vehicles; Electric Motor; Demagnetization; Geometry Optimization; Constraint Model, Finite Elements Analysis; Short Circuit; Neodymium Magnets; Parameter Sensitivity Analysis

Engineering, Electrical and Electronic Engineering

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