Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1998-07-24
2000-05-16
Ramirez, Nestor
Electrical generator or motor structure
Dynamoelectric
Rotary
310156, 310271, 310217, 310216, 310162, H02K 122, H02K 127
Patent
active
060641347
ABSTRACT:
A rotor assembly for a synchronous reluctance machine has a plurality of steel punched star-shaped supports secured along a shaft at spaced locations for retaining a plurality of laminated rotor sections. The star-shaped supports have four equiangularly spaced arms having arcuate valleys disposed therebetween that define a plurality of channels for receiving the rotor sections. The rotor sections are secured to the star-shaped core by a plurality of bands fastened circumferentially around the rotor. A plurality of grooves disposed circumferentially around the rotor receive and retain the bands in place. A rotor bar and arcuate spring may be disposed within a concave cavity defined by the rotor sections to reduce audible noise produced as the rotor rotates at a high rate of speed and provide added compression on the rotor sections to the core. The rotor sections also include a dimpled separator of predetermined thickness disposed between the laminate sheets to optimize the machine. The separator is a steel sheet having a plurality of dimples that define the thickness of the separator. This results in a high speed axially-laminated synchronous reluctance rotor running at high speeds without any bolts or end caps in the rotor.
REFERENCES:
patent: 2446999 (1948-08-01), Camilli
patent: 3250976 (1966-05-01), McEntire
patent: 4110646 (1978-08-01), Rao
patent: 4855630 (1989-08-01), Cole
patent: 4924130 (1990-05-01), Fratta
patent: 5296773 (1994-03-01), El-Antably et al.
patent: 5801470 (1998-09-01), Johnson et al.
patent: 5929551 (1999-07-01), El-antably et al.
Cruickshank, Axially Laminated Aniotropic Rotors for Reluctance Motors, Dec. 1966.
El-Antably Ahmed Mostafa
Erfanfar Moshen M.
Martin Ronald Allen
Dobrowitsky Margaret A.
General Motors Corporation
Mullins Burton
Ramirez Nestor
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