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US 6,794,790 B2Granted
Rotary electric machine
AssigneeDenso Corporation
InventorsShin Kusase, Takuzou Mukai
Life of this patent
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Abstract
A rotary electric machine is composed of an armature core, an armature winding, a rotor core disposed opposite said armature core, a rotary magnetic-flux source for supplying first magnetic flux to the rotor core, a frame for supporting the armature core and the rotor core and a stationary magnetic flux source, fixed to the frame, for supplying second magnetic flux to the rotor core in a direction to supplement the first magnetic flux.
Claims6
A rotary electric machine comprising:
- an armature having an armature core and an armature winding mounted in said armature core;
- a rotor having a rotor core disposed opposite said armature core and a first magnetic-flux source for supplying first magnetic flux to said rotor core to supply an alternating magnetic field to said armature core when said rotor rotates, said rotor core having a first end polarized by said first magnetic-flux source to be one of magnetic poles and a second end polarized by said first magnetic-flux source to be the other magnetic pole;
- a frame for supporting said armature and said rotor;
- and
- a second magnetic flux source, fixed to said frame, for supplying second magnetic flux to said rotor core in a direction to supplement said first magnetic flux;
- wherein said second magnetic flux source comprises a yoke for magnetically connecting said armature core and said first end of said rotor core to supply supplemental magnetic flux to said armature core, and
- wherein said yoke has one end that faces said first end of said rotor through a gap and is polarized to have the same polarity as said first end of said rotor and the other end in contact with said armature core.
4 more elements
Dependencies are inferred from the claim text.