Patent ID: 9018880
Filing Date: 2015-04-28
Classification: H02P

Abstract:
1. A control apparatus for controlling driving of a multi-phase rotary machine including a plurality of winding sets, each of which is formed of coils corresponding to a plurality of phases, the control apparatus comprising: a plurality of inverter circuits provided for the plurality of winding sets, respectively, to jointly form a plurality of drive systems, the plurality of inverter circuits switching over power supply to the winding sets; and a control unit for controlling an operation of the inverter circuits, and including an abnormality detection part capable of detecting abnormality of the inverter circuits, wherein the abnormality detection part is configured to: (1) calculate a first value with respect to each inverter circuit based on phase currents of each inverter circuit, (2) calculate a second value based on two first values selected from a plurality of first values calculated in correspondence to the plurality of inverter circuits, respectively; and (3) detect abnormality of a short-circuit between the drive systems, which correspond to selected first values, when the second value deviates from a predetermined range.