Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1984-09-26
1986-10-21
Skudy, R.
Electrical generator or motor structure
Dynamoelectric
Rotary
310217, 310218, 310261, H02K 2112
Patent
active
046187928
ABSTRACT:
A dynamoelectric machine is provided with a stator assembly and a rotor mounted for rotation within the stator assembly. The rotor comprises a laminated core having a central portion which includes a plurality of non-magnetic structural laminations and a plurality of magnetic laminations interspersed among the non-magnetic laminations. The rotor also has two end portions, each of which includes a plurality of non-magnetic structural laminations positioned adjacent to each other and an end lamination which closes the structure. A plurality of permanent magnets and a plurality of magnetic pole pieces extend longitudinally within the core. Each of the pole pieces lies adjacent to one surface of each of the permanent magnets and extends circumferentially between the associated magnet surface and an edge of adjacent one of the magnetic laminations. This produces a plurality of magnetic flux paths circumferentially disposed about the periphery of the core. The cross-sectional area of the magnetic pole pieces is substantially constant within the central core portion and decreases as the pole pieces extend into the end portions of the rotor stack.
REFERENCES:
patent: 3012161 (1961-12-01), Puder
patent: 3492520 (1970-01-01), Yates
patent: 4234808 (1980-11-01), Geppert
patent: 4354126 (1982-10-01), Yates
patent: 4406958 (1983-09-01), Palermo
patent: 4469970 (1984-09-01), Neumann
patent: 4472651 (1984-09-01), Jones
Lenart R. P.
Skudy R.
Westinghouse Electric Corp.
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