Invention Grant
US07667363B2 Permanent magnet embedment rotating electric machine, motor for car air conditioner, and enclosed electric compressor 失效
永磁式嵌入式旋转电机,汽车空调电机,封闭式电动压缩机

Permanent magnet embedment rotating electric machine, motor for car air conditioner, and enclosed electric compressor
Abstract:
Outer circumference of a rotor is alternately provided with a plurality of circumferential portions and a plurality of convex portions. Straight lines each connecting a rotational axis to one of circumferential centers of circumferential portions are referred to as radial lines. Straight lines each bisecting one of convex portions are referred to as bisectors. A plurality of magnetic flux blocking regions are located on a rotor. One of the magnetic flux blocking region is located in a range between the radial line and the bisector adjacent to and preceding the radial line in the rotation direction. Therefore, a permanent magnet embedment rotating electric machine is capable of preventing decreases in torque and suppressing torque ripple.
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