公开(公告)号：US20220407407A1

公开(公告)日：2022-12-22

申请号：US17753860

申请日：2020-02-28

Applicant: ABB Schweiz AG

Inventor： Xing Huang ,  Hailian Xie ,  Guangming Pei ,  Hua Wei ,  Min Li

IPC: H02M1/12 ,  H02M1/42 ,  H02J3/01 ,  H02M7/49

Abstract: Embodiments of present disclosure relate to an apparatus and a method for controlling a delta-connected cascaded multilevel converter. The apparatus (100) for controlling a delta-connected cascaded multilevel converter (110) comprises: a converter controller (102) configured to: receive current signals indicating phase currents flowing through respective phase arms of the converter (110); determine a harmonic current signal indicating a circulating current of the converter (110) from the current signals; and generate, based on the determined harmonic current signal and a reference current signal, a harmonic voltage signal to cause an amplitude of the circulating current flowing through the phase arms of the converter (110) to be a predetermined amplitude.

公开(公告)号：US12113456B2

公开(公告)日：2024-10-08

申请号：US17753860

申请日：2020-02-28

Applicant: ABB Schweiz AG

Inventor： Xing Huang ,  Hailian Xie ,  Guangming Pei ,  Hua Wei ,  Min Li

IPC: H02M7/49 ,  H02J3/01 ,  H02M1/12 ,  H02M1/15 ,  H02M1/00 ,  H02M5/458

CPC classification number: H02M7/49 ,  H02M1/12 ,  H02M1/15 ,  H02J3/01 ,  H02M1/0025 ,  H02M5/458

Abstract: Embodiments of present disclosure relate to an apparatus and a method for controlling a delta-connected cascaded multilevel converter. The apparatus (100) for controlling a delta-connected cascaded multilevel converter (110) comprises: a converter controller (102) configured to: receive current signals indicating phase currents flowing through respective phase arms of the converter (110); determine a harmonic current signal indicating a circulating current of the converter (110) from the current signals; and generate, based on the determined harmonic current signal and a reference current signal, a harmonic voltage signal to cause an amplitude of the circulating current flowing through the phase arms of the converter (110) to be a predetermined amplitude.