公开(公告)号：US20210297009A1

公开(公告)日：2021-09-23

申请号：US16827528

申请日：2020-03-23

Applicant: Hamilton Sundstrand Corporation

Inventor： Bo Liu ,  Xin Wu ,  Yongduk Lee

IPC: H02M7/5395 ,  H02M7/487 ,  H02M7/5387 ,  H02M3/335 ,  H02P27/14 ,  H02P6/08

Abstract: A power conversion system includes a hybrid power converter phase unit including three voltage inputs, a voltage output, a pair of outer switches between the voltage inputs and voltage output, and a pair of inner switches between the voltage inputs and the outer switches. The power conversion system includes a controller in electrical communication with the inner and outer switches. The controller is configured to selectively disable or enable the inner switches by switching the inner switches OFF or ON. A method includes selectively disabling or enabling inner switches in a hybrid power converter phase unit with a controller such that the hybrid power converter phase unit is a 3-level converter when the inner switches are ON and enabled in a 3-level mode and a 2-level converter when the inner switches are OFF and disabled in a 2-level mode.