| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a rotating electrical machine which can perform variable-speed driving with a high output and over a wide range, from low speed to high speed, and can realize improvement in efficiency, reliability and manufacturing performance over a wide driving range. <P>SOLUTION: A permanent magnet type rotating electrical machine according to the present invention is comprised of a stator 1 having an armature winding 2 around stator iron core 1a and a rotor 3 having a rotor core 3a with built-in multiple permanent magnets 6 on an outer periphery thereof. This stator 1a is furnished with a stator teeth 5 sandwiched by slots 4 for wounding an armature coil 2. Also, a trench 7 is grooved in a peripheral area of d-axis of an outer peripheral part of a rotor. By using these parts, a permanent magnet type rotating electrical machine is capable of reducing iron-loss during high speed operation and suppressing a temperature increase of a rotating electrical machine. <P>COPYRIGHT: (C)2012,JPO&INPIT |
