| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a motor drive controller that can perform vector control without installing many magnetic flux sensors near a gap between a rotor and a stator. <P>SOLUTION: The magnetic flux sensors 27a, 27b are embedded in the outermost circumference of a back yoke 21 between a magnetic pole iron core 22 and another iron core 22. In a power conversion/control portion 16, a difference between the magnetic flux sensor 27a and the magnetic flux sensor 27b is used as a magnetic pole flux detection value. Then, this detection value is compared with a magnetic pole flux command value to generate a signal that controls a voltage supplied to a winding 23. <P>COPYRIGHT: (C)2007,JPO&INPIT |
