Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1990-09-24
1992-03-17
Stephan, Steven L.
Electrical generator or motor structure
Dynamoelectric
Rotary
310261, 310211, H02K 2112
Patent
active
050971662
ABSTRACT:
A high-speed rotor for an AC permanent magnet synchronous motor includes a stack of magnetically permeable rotor laminations. Each rotor lamination comprises a plurality of conductive bar slots for holding a starter winding and having openings facing outside for minimizing the flux leakage from the rotation magnetic field produced by primary windings on the stator, and magnet slots for holding permanent magnets to produce an even number of magnetic poles on the periphery of the rotor. The lamination further includes a plurality of flux barrier slots connected to the magnet slots for minimizing the flux leakage from the permanent magnets and forming bridges in a ring configuration between the conductive bar slots and the barrier slots so that the integrality of the lamination is very much enhanced, while the power loss is minimized.
REFERENCES:
patent: 4139790 (1979-02-01), Steen
patent: 4358692 (1979-02-01), Liu et al.
patent: 4358697 (1982-11-01), Liu et al.
patent: 4469970 (1984-09-01), Neumann
patent: 4568846 (1986-02-01), Kapadia
patent: 4748360 (1988-05-01), Kawada et al.
patent: 4922152 (1990-05-01), Gleghorn et al.
Nguyen Matthew
Reuland Electric
Stephan Steven L.
LandOfFree
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