PERMANENT MAGNET-TYPE ROTARY ELECTRIC MACHINE
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United States of America
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Issued Date -
Dec 19, 2024
app pub date -
Nov 18, 2021
filing date -
Nov 18, 2021
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Abstract
A permanent magnet-type rotary electric machine comprises: a stator including: a stator core having a plurality of stator teeth formed circumferentially; stator coils arranged in the respective bottoms of a plurality of stator slots formed between the stator teeth and wound on the stator teeth in a concentrated winding manner; and stator magnets arranged near the respective openings of the plurality of stator slots, a first rotor having a plurality of pole pieces and disposed coaxially with the stator to face the stator magnets; and a second rotor having a plurality of permanent magnets and disposed coaxially with the first rotor to face the first rotor, wherein the circumferential width of stator teeth positioned between the adjacent two of the stator magnets is narrower than the circumferential width of the stator slots.
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