Patent ID: 9467078
Filing Date: 2016-10-11
CPC Classification: B62D,H02P

Claim Text:
1. A rotating electric machine driving apparatus comprising: an inverter section having an upper arm element and a lower arm element respectively corresponding to each of plural phases of a winding wire of a rotating electric machine, the upper arm element disposed on a high voltage side of the upper arm element and the lower arm element disposed on a low voltage side of the upper arm element; an electric current detector detecting an electric current supplied to the winding wire; a controller section obtaining a detected current value detected by the electric current detector and generating a high-side instruction signal and a low-side instruction signal respectively that switch an ON-OFF of the upper arm element and the lower arm element based on the detected current value; and an abnormality detector determining a simul-OFF abnormality, in which a high-side and low-side instruction signal pair for an upper arm and lower arm element pair simultaneously becomes an OFF instruction, based on continued switching-OFF of the high-side and low-side instruction signal pair continuing for at least a simul-OFF abnormality determination time; wherein the simul-OFF abnormality determination time is longer than a dead time, during which both the upper arm element and the lower arm element are simultaneously switched to avoid a simul-ON of the upper arm element and the lower arm element, and the simul-OFF abnormality determination time is equal to or shorter than a minimum retention time, which is a duration between a start of a voltage vector period for a detection of an electric current by the electric current detector and an electric current detection timing.