| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a drive control device enabling high efficient operation without requiring a command converter, and further to provide a sensorless drive control device enabling the high efficient operation using a lighter calculation load, for sensorless drive control of a permanent magnet synchronous motor. <P>SOLUTION: In order to solve the problem, in the drive control device of the permanent magnet synchronous motor, a phase determining device 2, which determines a phase to be used for a vector rotator or a vector rotator built-in converter, is constituted of a power factor phase detector 2a which detects a power factor phase equivalent value of terminal power of the permanent magnet synchronous motor, a power factor phase command device 2b which generates a power factor phase command value, and a power factor phase controller 2c which controls and generates the phase to be used for the vector rotator or the vector rotator built-in converter so that the power factor phase equivalent value coincides with a power factor phase command. <P>COPYRIGHT: (C)2008,JPO&INPIT |
