CONTROL DEVICE FOR ALTERNATING CURRENT ROTATING MACHINE AND ELECTRIC POWER STEERING DEVICE EQUIPPED WITH CONTROL DEVICE FOR ALTERNATING CURRENT ROTATING MACHINE

摘要

A control device for an alternating current rotating machine said control device being equipped with: a voltage command calculation means (1) that calculates the command voltage on two axes of rotation; and a voltage application means (2) that applies voltage to an alternating current rotating machine (3) on the basis of the command voltage on the two axes of rotation that is output by the voltage command calculation means. The voltage command calculation means (1) calculates the command voltage of the first axis and the command voltage of the second axis of the two axes of rotation and reduces the limit value of the voltage command on the second axis in proportion to the square of the voltage command on the first axis.