Halbach permanent magnet synchronous motor rotor with few rare earth combined magnetic poles

The invention discloses a Halbach permanent magnet synchronous motor rotor with few rare earth combined magnetic poles, and relates to the technical field of motors. The invention aims to solve the problem that the use amount of rare earth permanent magnet materials of an existing rare earth permane...

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Bibliographische Detailangaben
Hauptverfasser: CHE SHUANG, LI ZONGYAO, HATSUAKI, MENG TAO, LI CHUNYAN
Format: Patent
Sprache:chi ; eng
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Zusammenfassung:The invention discloses a Halbach permanent magnet synchronous motor rotor with few rare earth combined magnetic poles, and relates to the technical field of motors. The invention aims to solve the problem that the use amount of rare earth permanent magnet materials of an existing rare earth permanent magnet synchronous motor is large. According to the Halbach permanent magnet synchronous motor rotor with the few rare earth combined magnetic poles, each pole of permanent magnet comprises m main magnets and 2n auxiliary magnets, n auxiliary magnets are arranged on the two sides of the m main magnets in the circumferential direction respectively, the radial thickness of the main magnets is not equal to that of the auxiliary magnets, and n is larger than or equal to 2. Each main magnet comprises a non-rare earth material layer and a rare earth material layer which are sequentially arranged from inside to outside in the radial direction, and the auxiliary magnets and the non-rare earth material layers are non-rar