| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a permanent magnet type rotating electrical machine that prevents an increase in a magnetizing current required to increase/decrease the magnetism of a variable intensity magnet. <P>SOLUTION: The permanent magnet type rotating electrical machine includes a stator and a rotor. The stator has armature windings. The rotor has a rotor core, a first permanent magnet, a second permanent magnet and a member with a low magnetic resistance. The first permanent magnet is embedded in the rotor core where it has a flux content irreversibly variable with changing magnetization state in a magnetic field formed when the armature windings are energized. The second permanent magnet is embedded in the rotor core. The member with a low magnetic resistance is arranged between the first permanent magnet and the second permanent magnet and has a lower magnetic resistance than the first permanent magnet. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
