| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a sensorless detection method of rotor position in which the conduction sound of a current is reduced without lowering detection precision. <P>SOLUTION: The sensorless detection method of rotor position for detecting the rotor position of a single motor M being driven or regenerated by a first inverter 3 and a second inverter 4 comprises a step for conducting a current i to the first inverter 3 out of the first inverter 3 and the second inverter 4 and detecting the rotor position from the combined inductance of the motor M which varies with the current i. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
