Embedded permanent magnet type rotating electric machine with permanent magnet rotor having magnet holes and central bridge

An embedded permanent magnet type motor, which has one pole configured of two permanent magnets and has a plurality of poles of permanent magnets embedded in a rotor, includes a rotor whose magnet embedding holes communicate with a rotor outer periphery. The rotor has between adjacent poles a q-axis...

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Bibliographische Detailangaben
Hauptverfasser: Kobayashi, Takeyuki, Ohguchi, Hideki, Mochida, Toshiharu, Toba, Akio, Shimada, Hiroshi
Format: Patent
Sprache:eng
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Zusammenfassung:An embedded permanent magnet type motor, which has one pole configured of two permanent magnets and has a plurality of poles of permanent magnets embedded in a rotor, includes a rotor whose magnet embedding holes communicate with a rotor outer periphery. The rotor has between adjacent poles a q-axis projection projecting in a direction away from a rotor rotation center. The magnet embedding holes are disposed so as to form an inverted V shape. An outer peripheral edge portion on the outer side of the permanent magnets has a curvature radius smaller than the distance from a rotation center axis to a rotor outermost peripheral portion. The outer peripheral edge portion is provided with permanent magnet positioning projections which restrain a movement of the permanent magnets toward between adjacent poles.