Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1992-11-25
1994-03-29
Skudy, R.
Electrical generator or motor structure
Dynamoelectric
Rotary
310181, 310261, H02K 2112
Patent
active
052988279
ABSTRACT:
A dynamoelectric machine rotor comprising a plurality of substantially trapezoidal prism-shaped permanent magnets mounted on a magnetic yoke. Each of the magnets has magnetic pole faces in circumferential plane, side surfaces in a plane perpendicular to the rotary shaft and a front and a rear skewed surface slanted in different directions with respect to a plane parallel to the shaft. The magnetic pole faces of the magnets have alternating magnetic polarities in the circumferential direction, and the front and rear skewed surfaces of the neighboring permanent magnets are in parallel to each other. A ferromagnetic end material may be attached on the magnetic pole face of the magnets, and a ferromagnetic side material may be attached to at least a front and a rear skewed side surfaces of the magnets for increasing of the magnetization of the magnets by a stator flux. Also, slits may be provided in the magnetic yoke where the magnets are mounted for increasing a reluctance of a magnetic circuit passing through a common magnet.
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Zeitschrift Fur Angewandtw Physik, vol. 30, No. 1, 1970, Berlin pp. 99-102.
Patent Abstracts of Japan, JP61094548 May 13, 1986; JP3222641 Oct. 1, 1991; JP1209942 Aug. 23, 1989; JP 60043051 Mar. 7, 1985; and JP1103145 Apr. 20, 1989.
Apsit, Pole terminal Byulleten izobreteniy, 1959, No. 9, p. 26, published Jun. 13, 1958; Soviet Union.
Mitsubishi Denki & Kabushiki Kaisha
Skudy R.
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