公开(公告)号：US20230083355A1

公开(公告)日：2023-03-16

申请号：US17943693

申请日：2022-09-13

Applicant: ABB Schweiz AG

Inventor： Hemant Bishnoi ,  Sami Pettersson ,  Mario Schweizer ,  Daniel Christen ,  Gernot Riedel

IPC: H02M1/32 ,  H02M7/483 ,  H02M1/36

Abstract: A system and method for compensating a faulty switch in a multi-level flying capacitor converter includes a converter capacitor arranged in parallel to an input, a first and second converter switches arranged respectively between first and second ends of the converter capacitor, first and second bypass switches respectively arranged in parallel to the first and second converter switches, wherein operation includes detecting a faulty converter level that includes at least one of the first and second converter switches, discharging all capacitors arranged in parallel to the input of the multi-level converter, wherein all capacitors comprise the converter capacitors and an input capacitor; closing the first and second bypass switches of the faulty converter level; adapting a modulation of the converter switches of the other converter levels; and restarting the multi-level converter.

公开(公告)号：US20220416686A1

公开(公告)日：2022-12-29

申请号：US17902865

申请日：2022-09-04

Applicant: ABB Schweiz AG

Inventor： Daniel Christen ,  Mario Schweizer ,  Hemant Bishnoi ,  Sami Pettersson

IPC: H02M7/483 ,  H02M7/00 ,  H02M7/493

Abstract: A flying capacitor switching cell-system includes at least two flying capacitor switching cells, wherein each of the cells comprises an arrangement of at least one semiconductor system, and wherein the cells are in parallel in an electrical circuit.

公开(公告)号：US20250096691A1

公开(公告)日：2025-03-20

申请号：US18888641

申请日：2024-09-18

Applicant: ABB Schweiz AG ,  ABB E-Mobility B.V.

Inventor： Daniel Rothmund ,  Francisco Canales ,  David Baumann ,  Daniel Christen ,  Levy Costa

IPC: H02M3/335 ,  H01F27/24 ,  H01F27/28

Abstract: A converter for transferring power from a medium-voltage, MV, to a low-voltage, LV, side is provided. The converter includes at least one DC/AC cell with a MV AC terminal configured for generating an AC voltage from a MV DC voltage, and includes at least one AC/DC cell with a LV AC terminal configured for generating a DC voltage from a LV AC voltage. The converter has a magnetic core with a LV winding, and a LV terminal connected to the LV AC terminal, additionally with a magnetic core with a MV winding, and a MV terminal connected to the MV AC terminal. The converter includes an auxiliary unit with an auxiliary winding, and an auxiliary terminal connected to control circuits for operating the MV DC/AC cell. Galvanic insulation between the LV and the MV winding and the auxiliary winding is configured to withstand the Basic Insulation Level of the converter.

公开(公告)号：US12081142B2

公开(公告)日：2024-09-03

申请号：US17889113

申请日：2022-08-16

Applicant: ABB Schweiz AG

Inventor： Mario Schweizer ,  Daniel Christen ,  Hemant Bishnoi

IPC: H02M7/483 ,  H02M1/00

CPC classification number: H02M7/4837 ,  H02M1/0058

Abstract: A modulator for a flying-capacitor type multilevel converter receives, at an input, a time-variant reference signal and provides, at an output, a sequence of target levels, to provide switching signals for switching between discrete output levels of the multilevel converter according to the shape of the reference signal. The modulator determines a critical level as an intermediate output level of the multilevel converter which is closest to the level of the reference signal; and outputs only target levels corresponding to output levels different from the critical level.

公开(公告)号：US20230060063A1

公开(公告)日：2023-02-23

申请号：US17889113

申请日：2022-08-16

Applicant: ABB Schweiz AG

Inventor： Mario Schweizer ,  Daniel Christen ,  Hemant Bishnoi

IPC: H02M7/483 ,  H02M1/00

Abstract: A modulator for a flying-capacitor type multilevel converter receives, at an input, a time-variant reference signal and provides, at an output, a sequence of target levels, to provide switching signals for switching between discrete output levels of the multilevel converter according to the shape of the reference signal. The modulator determines a critical level as an intermediate output level of the multilevel converter which is closest to the level of the reference signal; and outputs only target levels corresponding to output levels different from the critical level.