| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a control device of an AC rotary machine capable of improving torque responsiveness constrained by a mechanical response of a speed control system. <P>SOLUTION: A control device of an AC rotary machine comprises: power conversion means 3 for outputting an AC voltage to an AC rotary machine 2; current detection means 4 for detecting a current flowing in the AC rotary machine 2; current operation means 5 for converting the detected current to a current on rotating two-axis coordinates; torque operation means 8 for operating an output torque output by the AC rotary machine 2 based on the current on the rotating two-axis coordinates; frequency command calculation means 9 for calculating a frequency command based on the deviation between the torque command and the output torque; a compensator 10 which calculates a frequency compensation amount for frequency command compensation based on the torque command; phase calculation means 6 for calculating a phase of a control coordinate axis set on the rotating two-axis coordinates based on the frequency command after the compensation; and voltage command calculation means 7 for calculating a voltage command to be output to the power conversion means based on the frequency command after the compensation and the phase of the control coordinate axis. <P>COPYRIGHT: (C)2013,JPO&INPIT |
