Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1992-11-04
1994-06-21
Skudy, R.
Electrical generator or motor structure
Dynamoelectric
Rotary
310185, 310254, H02K 2112
Patent
active
053230779
ABSTRACT:
The present invention relates to an electrical machine having a permanent-magnet-excited rotor. On the perimeter of the rotor, several plate-like or lamellar permanent magnets are arranged for each rotor pole directly at the air gap adjacent to the stator of the machine. Combinations of stator-slotting harmonic fields and harmonic fields based on the division of the magnets that lead to oscillating torques. These oscillating torques are largely suppressed by having the total number of permanent magnets configured on the rotor correspond to a prime number greater than three.
REFERENCES:
patent: 606912 (1898-07-01), Blothy
patent: 2193406 (1940-03-01), Goss
patent: 3013166 (1961-12-01), Ellis
patent: 4190779 (1980-02-01), Schaeffer
Patent Abstracts of Japan, vol. 14, No. 496, Oct. 29, 1990 & JP-A-22 06 343 (Sogo Kanko Kaihatsu) Aug. 16, 1990.
etzArchiv, vol. 10 (1988), H. 3, Rolf Mayer et al.: Reduktion der durch Nutung hervorgerufenen Momentenschwankungen bei umrichtergespeisten Synchronmotoren mit Dauermagneterregung, pp. 73-82.
Abstract of DE-U-80 18 686, Jul. 22, 1980, Siemens A.G., Berlin & Munchen, Germany: Dauermagneterregter Laeufer fur eine Elektrische Maschine.
Siemens Aktiengesellschaft
Skudy R.
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