Control device

摘要

A control device configured with a torque/current computation section, an actual current computation section, a current feedback control section, and a voltage control section. A two-axis rotating coordinate system has a first axis defined in a direction of field magnetic flux of a magnet provided in the rotor, and a second axis defined in a direction that is shifted by an electrical angle of 90 degrees with respect to the first axis. In the case where a torque command includes periodic torque vibration, the torque/current computation section executes first-axis command fixation control in which a first-axis current command, which is a first-axis component of the two-phase current command, is fixed at a predetermined value and a second-axis current command, which is a second-axis component of the two-phase current command, is vibrated in accordance with the torque vibration.

主权项

1. A control device that controls a rotary electric machine having a rotor, comprising:
a torque/current computation section that uses a two-axis rotating coordinate system that is a rotating coordinate system with two axes that rotate in synchronization with an electrical angle of the rotor, and that computes a two-phase current command obtained by representing a command value for a current caused to flow through the rotary electric machine using the two-axis rotating coordinate system on the basis of a torque command for torque to be output from the rotary electric machine; an actual current computation section that computes a two-phase actual current represented in the two-axis rotating coordinate system on the basis of an actual current that flows through the rotary electric machine; a current feedback control section that varies a two-phase voltage command, which is obtained by representing a voltage command for a voltage to be applied to the rotary electric machine in the two-axis rotating coordinate system, such that the two-phase actual current becomes closer to the two-phase current command; and a voltage control section that controls a voltage to be applied to the rotary electric machine on the basis of the two-phase voltage command, wherein: the two-axis rotating coordinate system has a first axis defined in a direction of field magnetic flux of a magnet provided in the rotor, and a second axis defined in a direction that is shifted by an electrical angle of 90 degrees with respect to the first axis; and in the case where the torque command includes periodic torque vibration, the torque/current computation section executes first-axis command fixation control in which a first-axis current command, which is a first-axis component of the two-phase current in the case where the torque command includes periodic torque vibration, the torque/current computation section executes first-axis command fixation control in which a first-axis current command, which is a first-axis component of the two-phase current command, is fixed at a predetermined value and a second-axis current command, which is a second-axis component of the two-phase current command, is vibrated in accordance with the torque vibration.