| 摘要 |
An electric rotating machine 10 includes a stator 11 having a plurality of teeth 15 facing a rotor 12, and a plurality of slots 18 providing spaces for winding coils around the teeth. The rotor has a pair of permanent magnets 16 embedded therein and located in a "V" shape configuration so as to let magnetic force act on the teeth such that the rotor within said stator is driven to revolve by reluctance torque and magnet torque. The permanent magnets are located in a way that when the pair of permanent magnets including a flux barrier in the rotor corresponding to six slots in the stator form a magnetic pole, an opening angle ratio delta, i.e., the proportion of a magnet opening angle theta3 with respect to a rotor axis to an effective magnetic pole opening angle theta1 falls in a range 0.762@delta@0816 effective for minimizing torque ripple.
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