CONTROL APPARATUS FOR AC ROTARY MACHINE AND CONTROL APPARATUS FOR ELECTRIC POWER STEERING

摘要

This invention is concerning a control apparatus for an AC rotary machine including: an AC rotary machine that includes a first winding and a second winding which have a phase difference; a first current detection unit that detects a current of the first winding; a second current detection unit that detects a current of the second winding; a control unit that calculates a first voltage command and a second voltage command on the basis of a detected current value; and a first detectability determination unit that determines a detectability of the current of the first winding, detected by the first current detection unit, on the basis of at least one of the first voltage command and the second voltage command, wherein the control unit calculates the first voltage command and the second voltage command on the basis of the detected current value of the second winding when the current of the first winding is undetectable.

主权项

1. A control apparatus for an AC rotary machine, characterized by comprising:
an AC rotary machine that includes a first winding and a second winding which have a phase difference; a first current detection unit that detects a current of the first winding; a second current detection unit that detects a current of the second winding; a control unit that calculates a first voltage command and a second voltage command on the basis of a detected current value of the AC rotary machine; a first voltage application unit that applies a voltage to the first winding on the basis of the first voltage command; a second voltage application unit that applies a voltage to the second winding on the basis of the second voltage command; and a first detectability determination unit that determines a detectability of the current of the first winding, detected by the first current detection unit, on the basis of at least one of the first voltage command and the second voltage command, wherein the control unit calculates the first voltage command on the basis of the current of the first winding, detected by the first current detection unit, when the first detectability determination unit determines that the current of the first winding is detectable, and calculates the first voltage command and the second voltage command on the basis of the current of the second winding, detected by the second current detection unit, when the first detectability determination unit determines that the current of the first winding is undetectable.