公开(公告)号：US11552575B1

公开(公告)日：2023-01-10

申请号：US17405311

申请日：2021-08-18

Applicant: General Electric Company

Inventor： Nathaniel Robert Michener ,  Fernando Arturo Ramirez Sanchez ,  Steven Wade Sutherland ,  Robert Gregory Wagoner ,  Rajesh Bhupathi ,  Igor Berroteran

IPC: H02M5/458 ,  H02M7/487 ,  H02M1/38 ,  H02M7/5388 ,  H02P27/14 ,  H02M1/00 ,  H02M1/08

Abstract: A method for operating a multi-level bridge power converter includes providing a plurality of switching devices of the power converter in one of a neutral point clamped topology or an active neutral point clamped topology. The method also includes providing a plurality of deadtimes for the switching devices. Further, the method includes selecting one of the deadtimes for each of the switching devices such that at least two of the switching devices operate according to different deadtimes. Moreover, the method includes operating the switching devices at the selected deadtimes to allow a first group of the switching devices to switch slower than a second group of the switching devices such that the first group of the switching devices satisfy safe operating requirements while the second group of the switching devices switch faster than the first group.