| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent sudden change of current when performing a mode change. <P>SOLUTION: A PI operation unit 26 of a motor controller calculates a proportional by multiplying a current deviation by a proportional gain and an integration term by multiplying an integrated value of the current deviation by an integral gain on the basis of the current deviation that is a difference between a current command of a motor calculated based on an output torque command of the motor 14 and an actual current of the motor actually measured, and then calculates a supply voltage command to the motor based on the proportional and the integration term. A control mode of the motor includes: an overmodulation control mode which obtains a sine wave output limited by a PWM control; and a PWM mode which obtains a sine wave output by the PWM control. If the current deviation is large when shifting from the overmodulation control mode to the PWM control, the proportional gain is decreased. <P>COPYRIGHT: (C)2013,JPO&INPIT |
