Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1991-02-15
1993-06-15
Stephan, Steven L.
Electrical generator or motor structure
Dynamoelectric
Rotary
310 51, 310156, 310187, 310265, H02K 524, H02K 2112, H02K 112
Patent
active
052202283
ABSTRACT:
A rotating electric machine comprises an armature arrange opposite the periphery of a magnet which is rigidly fitted to a rotary shaft. The armature has a plurality of salient poles arranged on it and projecting towards the magnet. The machine is characterized in that the surface of each of the salient poles facing the magnet comprises bevelled areas arranged at the lateral ends thereof and the magnet is a hollow cylindrical ring magnet. With such an arrangement, its induced voltage can show a sustained sinusoidal waveform which is free from high harmonics to an extent greater or equal to that of a rotating electric machine comprising a segmented magnet and consequently the level of cogging of the inventive machine can be minimized. If the ring magnet of a rotating electric machine according to the invention is skewedly magnetized relative to the axis of the ring magnet, the effect of the machine in maintaining the sinusoidal waveform of the induced voltage can be further enhanced.
REFERENCES:
patent: 606912 (1898-07-01), Blathy et al.
patent: 3956678 (1976-05-01), Byrne et al.
patent: 4216400 (1980-08-01), Lynch et al.
patent: 4504755 (1985-03-01), Semones et al.
patent: 4642502 (1987-02-01), Carpenter et al.
patent: 4670696 (1987-06-01), Byrne et al.
patent: 4698537 (1987-10-01), Byrne et al.
patent: 4719382 (1988-01-01), Listing
patent: 4725751 (1988-02-01), Bassler et al.
patent: 4755702 (1988-07-01), Iijima et al.
patent: 4812692 (1989-03-01), Arita
patent: 4868438 (1989-09-01), Okamoto et al.
patent: 4871934 (1989-10-01), Okamoto et al.
patent: 4888512 (1989-12-01), Shimizu
patent: 4933584 (1990-06-01), Harms et al.
Haszko D. R.
Sankyo Seiki Mfg. Co. Ltd.
Stephan Steven L.
LandOfFree
Rotating electric machine with bevelled armature poles does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Rotating electric machine with bevelled armature poles, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Rotating electric machine with bevelled armature poles will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1045730