| 摘要 |
PROBLEM TO BE SOLVED: To relax the efficiency drop of a motor caused by temperature rise. SOLUTION: This controller is provided with a temperature sensor 14 which measures the temperature of a motor 10. A current command determinator 310 is provided with a current map 312 where the motor temperature K is taken into consideration. The current command determinator 310 reads out current command values Id* and Iq* on each axis d and q geared to a torque command value T*, motor revolution N, and motor temperature K from the current map 312. Based on these current command values, a switching command for pulse width modulation is generated by a current control computer 314 and a two-phase and three-phase converter 316, and an inverter part 22 is controlled, according to this switching command. |
