公开(公告)号：WO2021175575A1

公开(公告)日：2021-09-10

申请号：PCT/EP2021/053647

申请日：2021-02-15

Applicant: ABB SCHWEIZ AG

Inventor： CHRISTEN, Daniel ,  SCHWEIZER, Mario ,  BISHNOI, Hemant ,  PETTERSSON, Sami

IPC: H02M7/00 ,  H02M7/483 ,  H02M1/088 ,  H02M7/493

Abstract: The invention relates to a flying capacitor switching cell-system (1), comprising at least two flying capacitor switching cells (2), wherein each of the cells (2) comprises an arrangement of at least one semiconductor system, wherein the cells (2) are in parallel in an electrical circuit (3). The invention also relates to a converter system comprising the flying capacitor switching cell-system (1).

公开(公告)号：EP4529013A1

公开(公告)日：2025-03-26

申请号：EP23198343.8

申请日：2023-09-19

Applicant: ABB SCHWEIZ AG ,  ABB E-mobility B.V.

Inventor： ROTHMUND, Daniel ,  CANALES, Francisco ,  BAUMANN, David ,  CHRISTEN, Daniel ,  COSTA, Levy

IPC: H02M3/335 ,  H02M3/00 ,  H02M1/00

Abstract: A converter (100) 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 (10) configured for generating an AC voltage from a MV DC voltage, the DC/AC cell having a MV AC terminal (12). The converter further includes at least one AC/DC cell (14) configured for generating a DC voltage from a LV AC voltage, the AC/DC cell having a LV AC terminal (16). The converter also has a magnetic core (18), a LV winding (20) being wound around the magnetic core and having a LV winding terminal (22), the LV winding terminal being connected to the LV AC terminal of the at least one AC/DC cell. The converter has a MV winding (24) being wound around the magnetic core and having a MV winding terminal (22), the MV winding terminal being connected to the MV AC terminal of the at least one DC/AC cell. The converter includes an auxiliary unit (26) having an auxiliary winding (28) being wound around the same magnetic core and having an auxiliary winding terminal (30), the auxiliary winding terminal being connected to control auxiliary circuits for operating the MV DC/AC cell and a galvanic insulation to galvanically insulate the LV winding from the MV winding and the auxiliary winding. The galvanic insulation between the LV and the MV winding and the auxiliary winding is configured to withstand the Basic Insulation Level (BIL) of the converter.

公开(公告)号：EP4057493A1

公开(公告)日：2022-09-14

申请号：EP21161529.9

申请日：2021-03-09

Applicant: ABB Schweiz AG

Inventor： SCHWEIZER, Mario ,  CHRISTEN, Daniel ,  BISHNOI, Hemant

IPC: H02M7/483 ,  H02M7/5395 ,  H02M1/00 ,  H02M1/12

Abstract: The invention relates to an N-level converter (100). The converter is configured to generate an output voltage out of N output voltage levels. The N level converter comprises a switching circuit (104) with a number of switches, and a control circuit (102). The control circuit is configured to generate a reference signal. The reference signal has N voltage levels, wherein adjacent reference signal voltage levels define reference signal voltage sub-ranges and wherein all reference signal voltage sub-ranges form a reference signal voltage full-range. The control circuit is further configured to generate M carriers. Each of the M carriers covers the reference signal voltage full-range. The control circuit is further configured to compare a number of carriers out of the M carriers with the references signal, to generate a PWM pulse for each of the compared carriers based on the comparison, and to control a converter switch arrangement out of the number of switches using the PWM pulses for generating a voltage contributing to an converter output voltage level to be generated. The M carriers are divided into L carrier sets. Each carrier set includes the carriers to be compared.