| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a technology which can embed a permanent magnet which constitutes the magnetic field of an IPM rotary electric machine, more shallowly in a rotor core. <P>SOLUTION: The IPM motor is provided with a stator (11) and a rotor (12). The rotor (12) has the rotor core (17) and a plurality of permanent magnets (18) which constitutes the field. The rotor core (17) has a side face (12a) facing the stator (11), and the permanent magnets (18) are embedded shallowly in the rotor core (17) so that the distance between its pole face (18a) and the side face (12a) of the rotor becomes small. Further, the two adjacent permanent magnets (18) are actively separated so as to satisfy the formula: 0.3<(L<SB>q</SB>-L<SB>d</SB>)/L<SB>d</SB>, described by using the q-axis inductance L<SB>q</SB>of, and the d-axis inductance L<SB>d</SB>of the rotor (12). <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
