公开(公告)号：US20250167718A1

公开(公告)日：2025-05-22

申请号：US19029347

申请日：2025-01-17

Applicant: DENSO CORPORATION

Inventor： Jun YAMADA ,  Daisuke YAMAMOTO ,  Hiroki TATEYAMA ,  Kenichi OISHI

IPC: H02P29/024 ,  H02P23/14

Abstract: A control unit includes a drive control unit that controls the on and off operation of the switching elements, and an abnormality determination unit that performs abnormality determination on energization paths to the motor windings. The abnormality determination unit identifies a faulted phase, based on voltage detection values when the switching elements of all the phases are turned off, and identifies a permanent energization fault of the faulted phase, based on at least one of a current detection value when one of the switching elements corresponding to the identified faulted phase is turned on, and a rotational position detection value when one or more of the switching elements corresponding to one or more of normal phases are turned on.