公开(公告)号：US20240106355A1

公开(公告)日：2024-03-28

申请号：US18468157

申请日：2023-09-15

Applicant: ABB Power Electronics Inc.

Inventor： Qixue Yu ,  Ting He ,  Juan Zhang ,  Kun Dou

IPC: H02M7/5395 ,  H02M1/08 ,  H02M1/12

CPC classification number: H02M7/5395 ,  H02M1/081 ,  H02M1/123 ,  H02M1/126

Abstract: Embodiments of the present disclosure provide a method for controlling a converter and a converter system. The method includes obtaining voltage signals indicating phase voltages of three phases at AC side of a converter, determining, based on the voltage signals, carrier signals of a three-phase switching branches of the converter, wherein carrier signals of two of three phases have the same phase with each other and have a different phase from a carrier signal of the rest phase of the three phases, and magnitude of a phase voltage of the rest phase is between the phase voltages of the two phases, and generating, based on the determined carrier signals and modulation wave signals of the three-phase switching branches, control signals of the three-phase switching branch.