Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1997-08-13
1999-10-05
LaBalle, Clayton
Electrical generator or motor structure
Dynamoelectric
Rotary
310162, 310164, H02K 112, H02K 1904
Patent
active
059629479
ABSTRACT:
To reduce as much as possible the motor vibration due to the effect of harmonic components contained in the induced electromotive force waveform induced in the armature coil. In a motor structure, the pole tooth shapes of one pole tooth and the corresponding pole tooth thereto constituting one phase are made different from each other by changing their areas or amounts of skew, whereby the third harmonics caused by variations in the magnetic fluxes interlinking with these pole teeth are caused to cancel each other. Thus, the rotational vibration which has hitherto been a problem can be reduced and, further, the accuracy of the rotor movement can be improved without lowering the dynamic torque characteristic of the motor.
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Patent Abstracts of Japan, No. 61167366, (Jul. 29, 1986).
Fujitani Sakae
Hino Haruyoshi
Inoue Naomi
Sakiyama Hideki
Suzuki Yuzuru
LaBalle Clayton
Minebea Co. Ltd.
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