Dynamo electric machine with permanent magnet type rotor

In a dynamo electric machine provided with a stator and a permanent magnet type rotor 2, on or near circumferential surface of the rotor 2 facing the stator 1 p.n pieces of permanent magnet blocks 21 are disposed, herein p is number of poles of the rotor and n is an integer equal to or more than 2,...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: KANEDA JUNYA, KITAMURA MASASHI, TOMEOKU HIROSHI, KOMURO MATAHIRO, ITO MOTOYA
Format: Patent
Sprache:eng
Schlagworte:
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Beschreibung
Zusammenfassung:In a dynamo electric machine provided with a stator and a permanent magnet type rotor 2, on or near circumferential surface of the rotor 2 facing the stator 1 p.n pieces of permanent magnet blocks 21 are disposed, herein p is number of poles of the rotor and n is an integer equal to or more than 2, and each of the permanent magnet blocks satisfies the following condition (1); (thetai)-(thetai+1)=(Ai.p/2) (1) Wherein, when assuming that clockwise direction is plus, Ai is an angle formed between radial center lines of ith permanent magnet block and (i+1)th permanent magnet block, thetai is an angle formed between magnetization direction of the ith permanent magnet block and the outward radial direction thereof, and thetai+1 is an angle formed between magnetization direction of the (i+1)th permanent magnet block and the outward radial direction thereof, and further, when assuming that stator 1 includes m pieces of salient poles disposed with an equal interval the dynamo electric machine satisfies the following condition (2); m/p