Learn about the ongoing “trend to use powerful neodymium magnets to generate high torque in a compact motor.” Originally published 2017/4/20 by by Takashi Kenjo, Nidec Technical Adviser.
https://www.nidec.com/en/technology/motor/academic/009/
“When training a motor scientist or engineer, it is important to bring up the question “why?” One must be able to form a clear picture in one’s mind, in terms of electrodynamics, of why a motor of a certain construction will run, why almost all brushless motors today adopt concentrated windings, or why the current trend is to use permanent magnets with a higher number of magnetic poles. None of these questions can be satisfactorily answered in the space of a few pages.”
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