公开(公告)号：US11557992B2

公开(公告)日：2023-01-17

申请号：US17321020

申请日：2021-05-14

申请人： DELPHI TECHNOLOGIES IP LIMITED

发明人： Raquib Buksh ,  Kevin M. Gertiser ,  Ihab Nahlus ,  Tushar Nachnani ,  Ronald M. Shearer ,  Mitchell Cohen ,  Spandana V. Barre

IPC分类号： H02P6/18 ,  H02P21/32 ,  H02P6/185

摘要： A method for phase-voltage based motor period measurement includes generating a commanded phase voltage and applying the commanded phase voltage to a first phase voltage input of an electric motor, a second phase voltage input of the electric motor, and a third phase voltage input of the electric motor, measuring a first period of a phase voltage associated with the first phase voltage input and the second phase voltage input and comparing the measured first period to a frequency of the commanded phase voltage, and, in response to a determination that the measured first period of the phase voltage associated with the first phase voltage input and the second phase voltage input is outside of a range of the frequency associated with the commanded phase voltage, identifying a fault associated with the first integrated circuit or signal path.