| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a motor derive device which can reduce the pulse of a driving current of such a motor as a switch reluctance motor (SR motor) by preventing the inductance of a coil of a stator from saturation when at least a high torque (heavy-current) range is driving without using such things as members with a permanent magnet. <P>SOLUTION: While a high torque range of a SR motor 1 is driving, when a stator magnetic pole of a driving phase approaches a counter state because of a control part 4A, a power running current is formed by a current of a voltage difference among multiple power sources, a driving voltage (power source voltage) of a coil of the stator magnetic pole is reduced to the voltage difference, the inductance is enlarged to restrain the current behavior, and the pulse of the driving current is prevented without using such things as members with a permanent magnet. <P>COPYRIGHT: (C)2012,JPO&INPIT |
