| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a motor drive in which a phase current is detected accurately through an inexpensive arrangement, high quality driving can be ensured from a low speed rotation region to a high speed rotation region and the high speed rotation region can be enlarged. <P>SOLUTION: Inverter bus current is detected for each phase of a three-phase motor, a duty correcting means is provided, and the phase of a current flowing through the three-phase motor is advanced when each phase voltage of the motor is saturated. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
