| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a motor drive method, a motor drive device and an air conditioner having the motor drive device capable of allowing a motor to quickly and smoothly reach a target rotational frequency without overshooting the target rotational frequency at starting. <P>SOLUTION: A rotational frequency command value at starting according to the target rotational frequency of the motor, and a reference rotational frequency command value to rotate the motor at the target rotational frequency are stored, the motor is started on the basis of the stored rotational frequency command value at starting, and the rotational frequency command value is kept for 1.5 seconds. Then the rotational frequency command value of the motor is updated by an increment according to the deviation of the target rotational frequency to the rotational frequency detected every 0.5 seconds thereafter, and the rotational frequency command value at starting is increased and decreased according to a positive value and a negative value of the deviation of the updated rotational frequency command value to the stored reference rotational frequency command value when the deviation is within a prescribed range. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
