Rotating electric machine, elevator hoist, and method for magnetizing and demagnetizing permanent magnet of rotating electric machine
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United States of America Patent
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Oct 1, 2019
Grant Date -
Jan 25, 2018
app pub date -
Jan 18, 2016
filing date -
Feb 10, 2015
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Abstract
A rotating electric machine includes: a stator having an armature core having slots formed between magnetic pole teeth, and a plurality of coils each of which is wound so as to straddle a plurality of the magnetic pole teeth; and a rotor including a plurality of permanent magnets disposed at certain intervals on an outer peripheral surface of the magnetic yoke, and the coils include an armature coil for driving the rotating electric machine and a non-armature coil for magnetizing or demagnetizing the permanent magnets of the rotor.
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