ROTARY ELECTRIC MACHINE CONTROL APPARATUS

摘要

A rotary electric machine control apparatus controlling drive of a rotary electric machine includes a pre-limit d-axis voltage arithmetic portion calculating a pre-limit d-axis voltage command value; a pre-limit q-axis voltage arithmetic portion calculating a pre-limit q-axis voltage command value; a d-axis limit portion calculating a d-axis voltage command value; and a q-axis limit portion calculating a q-axis voltage command value. When an absolute value of the pre-limit q-axis voltage command value is greater than an absolute value of a second limit value, and an absolute value of a previous q-axis voltage command value is equal to or greater than the absolute value of the second limit value and is equal to or less than an absolute value of a first limit value, the q-axis limit portion determines a previous q-axis voltage command value as the q-axis voltage command value.

主权项

1. A rotary electric machine control apparatus controlling drive of a rotary electric machine with applied voltage controlled by an inverter, the rotary electric machine control apparatus comprising:
a pre-limit d-axis voltage arithmetic portion calculating a pre-limit d-axis voltage command value on a basis of a d-axis current command value and a d-axis current detection value; a pre-limit q-axis voltage arithmetic portion calculating a pre-limit q-axis voltage command value on a basis of a q-axis current command value and a q-axis current detection value; a d-axis limit portion limiting the pre-limit d-axis voltage command value to calculate a d-axis voltage command value; and a q-axis limit portion limiting the pre-limit q-axis voltage command value to calculate a q-axis voltage command value, wherein: a dead zone width is defined between a first limit value and a second limit value; the dead zone width relates to a limitation of the pre-limit q-axis voltage command value; an absolute value of the first limit value is greater than an absolute value of the second limit value; when an absolute value of the pre-limit q-axis voltage command value is greater than the absolute value of the second limit value, and an absolute value of a previous q-axis voltage command value is equal to or greater than the absolute value of the second limit value and is equal to or less than the absolute value of the first limit value, the q-axis limit portion determines the previous q-axis voltage command value as the q-axis voltage command value; and the previous q-axis voltage command value is the q-axis voltage command value in an immediately previous calculation.