Rotor with hollow cylindrical permanent magnet

Details Rotor with hollow cylindrical permanent magnet Rotor with hollow cylindrical permanent magnet

H - Electricity

02

K

H02K 21/12 (2006.01) H02K 1/27 (2006.01) H02K 21/20 (2006.01)

Patent

CA 2148688

A rotor (14) for a dynamoelectric machine (10), without windings and rotatable about a central longitudinal axis (18), having an axially extending rotatable body and a toroidal magnet (58) coaxially mounted on the body is constructed to provide magnetic excitation for the rotor (14). The rotatable body contains a first set of circumferentially spaced axially extending salient poles (28) with circumferentially spaced recesses (26) therebetween and a second set of similar poles (28) at an opposite axial location. The toroidal magnet (58) is coaxially mounted on the body between the first and second set of salient poles (28). A second toroidal magnet (158) may also be mounted on the body and a magnetic spacer (161) placed in between both toroidal magnets (58, 158).

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