Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1983-10-28
1986-02-04
Wong, Peter S.
Electrical generator or motor structure
Dynamoelectric
Rotary
310211, 310216, H02K 2112
Patent
active
045688460
ABSTRACT:
A permanent magnet rotor has a plurality of high performance permanent magnets supported in each set of a plurality of stacked rotor laminations of magnetic material, with holding laminations at each end of each set of the stacked rotor laminations enclosing the magnets. Bolts extend through aligned holes in all of the laminations to enable nuts to be attached, to form a stacked and bolted assembly. The magnets are preferably radially disposed and equiangularly spaced from each other. A groove is disposed in each of the laminations between a non-magnetic shaft and the inner end of each of the magnets to reduce flux leakage. An electrically conducting and non-magnetic material is disposed at the outer end of each of the magnets, to reduce flux leakage. In another embodiment, four high performance magnets are supported in each set of a plurality of stacked rotor laminations of magnetic material about a magnetic shaft, so that the two separate pairs of magnets of each set cooperate to produce two separate fields of flux.
REFERENCES:
patent: 2680822 (1954-06-01), Brainard
patent: 3219861 (1965-11-01), Burr
patent: 3221194 (1965-11-01), Blackburn
patent: 4139790 (1979-02-01), Steen
patent: 4405873 (1983-09-01), Nondahl
Rebsch D. L.
Welco Industries
Wong Peter S.
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