公开(公告)号：US09800183B1

公开(公告)日：2017-10-24

申请号：US15157955

申请日：2016-05-18

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Jianglin Wang ,  Bon Ho Bae ,  Chia-Chou Yeh

IPC: H02P1/04 ,  H02P27/04 ,  H02P6/08 ,  H02P21/22

CPC classification number: H02P6/08 ,  H02P21/0089 ,  H02P21/22

Abstract: An inverter electrically operatively connected to an electric machine and in communication with a controller is described. The inverter is electrically connected to a high-voltage DC power bus. A method for controlling the multi-phase inverter circuit includes monitoring, via the controller, a rotational speed of the electric machine during operation of the inverter in an over-modulation mode. The inverter is commanded to operate in a linear modulation mode when the rotational speed is within a speed range associated with objectionable audible noise generated by operating the electric machine in the over-modulation mode.