| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a controller of a motor capable of expanding the range in which the maximum efficiency control of the motor is possible, by properly setting an induced voltage constant of the motor which comprises double rotors according to operation state of it. <P>SOLUTION: So that the efficiency of the motor 1 becomes maximum when acquiring a torque corresponding to torque command Tr_c based on an output voltage Vdc of a DC power source, rotational speed Nm of the motor 1, and the torque command Tr_c, the controller includes a Ke command calculation part 90 which calculates command value Ke_c of an induced voltage constant of a motor 1 and a phase difference control part 80 which calculates a command value θd_c of rotor phase difference according to Ke_c and changes the rotor phase difference by outputting θd_c to an actuator 25. <P>COPYRIGHT: (C)2008,JPO&INPIT |
