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Advanced high speed permanent magnet synchronous machines (PMSM) have been the subject of recent research for electrified transportation. Specific power of electric machines must increase in order to make hybrid-electric passenger aircraft feasible. Raising operating frequency improves specific power and requires robust windings. This paper will present electrical loss, dielectric, thermal, and mechanical design considerations of the form-wound air-core armature windings for a high-speed PMSM. The winding manufacturing and qualifying processes will be presented along with bench test results.
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Renner et al. (2017) studied this question.
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