Permanent magnetic rotating machine

Details Permanent magnetic rotating machine Permanent magnetic rotating machine

2006-04-25

2006-04-25

Nguyen, Tran (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

Reexamination Certificate

active

07034424

ABSTRACT:
A permanent magnet rotating machine includes a rotor with a permanent magnet having circumferential magnetic poles with a skew at boundaries between magnetic poles of the permanent magnet, and a stator having a stator iron core in an almost cylindrical shape and convex poles protruding inwardly, the rotor being disposed within the stator. A skew angle of the skew is smaller than a theoretical angle θs(electrical angle) and larger than one-half the theoretical angle θs, wherein the theoretical angle θsis defined as,in-line-formulae description="In-line Formulae" end="lead"?θs=180×(number of magnetic poles in the rotor)/smallest integer of which both the number of magnetic poles in the rotor and the number of magnetic poles in the stator are factors) [deg.].in-line-formulae description="In-line Formulae" end="tail"?

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patent: 2003/0048017 (2003-03-01), Nakano et al.
patent: 5168181 (1993-07-01), None
patent: 2000308286 (2000-11-01), None

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