Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1995-12-11
1997-07-22
Stephan, Steven L.
Electrical generator or motor structure
Dynamoelectric
Rotary
310190, 310216, 310261, 310265, 310111, H02K 127
Patent
active
056506805
ABSTRACT:
A permanent magnet generator includes an annular stator with windings on the inner face. A round rotor is rotatably mounted in the stator, and includes a plurality of circumferentially spaced rectangular openings inwardly of the outer peripheral portion of the core. Radial U-shaped grooves are formed between the openings. A magnetic unit, including a rectangular permanent magnet and an abutting magnetic conductive shim, is close-fitted within each opening. The core includes core lamination and separate end laminations of a structure corresponding to the core laminations. The end laminations are rotated about an axis through the core to offset the magnetic unit openings with respect to the magnetic unit opening of the core laminations. The laminations are riveted together, with the offset end lamination retaining the magnetic units within the core. The shims respond to the magnetic flux resulting from rotation of the rotor to generate eddy currents and a resulting magnetic flux which cancels harmonic components from the total magnetic flux through the stator and thereby minimizes zero crossings and distortion of the output voltage and current.
REFERENCES:
patent: 2193675 (1940-03-01), Merrill
patent: 2626367 (1953-01-01), Beymer
patent: 3840763 (1974-10-01), Baumann et al.
patent: 4025840 (1977-05-01), Brissey et al.
patent: 4207483 (1980-06-01), Baer
patent: 4322648 (1982-03-01), Ray et al.
patent: 4327302 (1982-04-01), Herschberger
patent: 4354126 (1982-10-01), Yates
patent: 4434546 (1984-03-01), Hershberger
patent: 4517483 (1985-05-01), Hucker et al.
patent: 4618792 (1986-10-01), Yates
patent: 4850100 (1989-07-01), Stokes
patent: 4906882 (1990-03-01), Erndt et al.
patent: 4980592 (1990-12-01), Olmr et al.
patent: 5030871 (1991-07-01), Shah et al.
patent: 5040286 (1991-08-01), Stark
patent: 5063318 (1991-11-01), Anderson
patent: 5097166 (1992-03-01), Mikulic
patent: 5200662 (1993-04-01), Tagami et al.
patent: 5218251 (1993-06-01), Allwine, Jr.
Marathon Electric Mfg. Co.
Mullins Burton S.
Stephan Steven L.
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