Rotator control device, rotator system, vehicle, electric car and electric generation system

摘要

To prevent demagnetization of a permanent magnet synchronous rotating machine, a rotating machine control device according to the present invention is a rotating machine control device comprising: a power converter having a switch part on each of a positive side and a negative side for each phase; and short circuit detection unit for detecting a short circuit of the switch part, wherein a command to turn on positive-side switches and negative-side switches of a plurality of phases of the switch part is issued in the case where the short circuit detection unit detects the short circuit.

主权项

1. A rotating machine control device comprising:
a power converter having a switch part on each of a positive side and a negative side for each phase; a short circuit detection unit for detecting a short circuit of the switch part,
wherein a command to turn on positive-side switches and negative-side switches of a plurality of phases of the switch part is issued in the case where the short circuit detection unit detects the short circuit; an overcurrent detection unit for detecting an overcurrent of a rotating machine; and an abnormality detector to which a signal from the short circuit detection unit is input,
wherein the abnormality detector issues the command to turn on the positive-side switches and the negative-side switches of the plurality of phases of the switch part, andwherein the abnormality detector issues the command to turn on the positive-side switches and the negative-side switches of the plurality of phases of the switch part, in the case where the signal from the short circuit detection unit is input to the abnormality detector or the overcurrent of the rotating machine is detected,wherein the abnormality detector includes:
an overcurrent level setter for determining an overcurrent threshold;a comparator for comparing a phase current of the rotating machine with the overcurrent threshold and, in the case where the phase current is larger than the threshold, detecting the overcurrent of the rotating machine and outputting an abnormality signal; andan OR circuit for outputting an abnormality signal in the case where the abnormality signal from the comparator or the signal from the short circuit detection unit is input to the OR circuit, andwherein the abnormality detector issues the command to turn on the positive-side switches and the negative-side switches of the plurality of phases of the switch part in the case where the signal from the short circuit detection unit is input to the abnormality detector or the overcurrent of the rotating machine is detected, by the OR circuit outputting the abnormality signal.