| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a motor control apparatus that prevents the generation of noise when changing a magnetization state of a permanent magnet that is disposed in a rotor and has low coercive force. <P>SOLUTION: A magnetization control unit 58 simultaneously outputs a d-axis current command Id#com2 and a q-axis current command value Iq_refc, when changing an amount of magnetization of an alnico magnet 9b disposed in the rotor 3 of a permanent magnet motor 1 by energizing a coil 5 via an inverter circuit 52, thus simultaneously energizing a d-axis current Id and a q-axis current Iq, and generating magnet torque so that reluctance torque generated by following energization of the d-axis current Id is canceled. <P>COPYRIGHT: (C)2011,JPO&INPIT |
