公开(公告)号：EP4304073A1

公开(公告)日：2024-01-10

申请号：EP22183835.2

申请日：2022-07-08

Applicant: ABB SCHWEIZ AG

Inventor： KIEFERNDORF, Frederick ,  SCHWEIZER, Mario ,  TSOUMAS, Ioannis

IPC: H02M7/487 ,  H02M1/00 ,  H02M7/483

Abstract: An electrical converter (10) comprises a main stage (12) adapted for converting a DC voltage into an intermediate voltage comprising at least two voltage levels and a filter cell stage (14) with a filter cell (30) for each phase of the main stage (12), each filter cell (30) being adapted for adding or subtracting a cell voltage of the filter cell (30) to the intermediate voltage. A method for controlling an electrical converter (10) comprises a pattern determination part (44) comprising the steps of: selecting and reading an offline-computed optimized pulse pattern (OPP base ) from a database, wherein the selected optimized pulse pattern (OPP base ) comprises switching instants for the main stage (12) and the filter cells (30) over a next computation window ( α win ) of a predetermined width ( α w ); adjusting the optimized pulse pattern (OPP base ) by moving its switching instants such that average output voltages generated in the filter cells (30) are shifted towards an average output voltage reference (U bal,abc ) of the filter cells (30), which is determined from measurements in the filter cells (30), and compensating these adjustments by corresponding modifications of switching instants of the main stage (12). The method comprises further a model predictive control part (46) comprising the following steps, which are performed several times during the next computation window ( α win ): modifying the adjusted optimized pulse patterns (66) by moving at least one transition time of a switching instant, such that a flux error determined from a difference between an estimated flux (74) of the electrical converter (10) and a reference flux trajectory (Ψ ref ) is minimized; and applying at least a next switching instant from the modified adjusted pulse pattern to the electrical converter (10).

公开(公告)号：EP3497782B1

公开(公告)日：2020-09-30

申请号：EP17748805.3

申请日：2017-08-10

Applicant: ABB Schweiz AG

Inventor： VAN-DER-MERWE, Wim ,  GEYER, Tobias ,  SCHWEIZER, Mario ,  TSOUMAS, Ioannis

IPC: H02M7/49

公开(公告)号：EP3497782A1

公开(公告)日：2019-06-19

申请号：EP17748805.3

申请日：2017-08-10

Applicant: ABB Schweiz AG

Inventor： VAN-DER-MAERWEN, Wim ,  GEYER, Tobias ,  SCHWEIZER, Mario ,  TSOUMAS, Ioannis

IPC: H02M7/49

Abstract: A method for controlling a converter system includes: determining, with a first controller stage, an output voltage reference for the converter system; generating, with the first controller stage, switching commands for a main converter based on the output voltage reference, such that the main converter converts an input voltage into an intermediate voltage provided at an output of the main converter and following the output voltage reference; and generating, with a second controller stage, switching commands for a floating converter cell connected to the output of the main converter, such that the floating converter cell converts the intermediate voltage into an output voltage provided at an output of the floating converter cell, wherein the floating converter cell comprises a cell capacitor and a semiconductor switch arrangement for connecting and disconnecting the cell capacitor between the output of the main converter and the output of the floating converter cell.

公开(公告)号：EP3497781A1

公开(公告)日：2019-06-19

申请号：EP17748800.4

申请日：2017-08-09

Applicant: ABB Schweiz AG

Inventor： PARK, Ki-Bum ,  SOEIRO, Thiago Batista ,  SCHWEIZER, Mario ,  MASTELLONE, Silvia

IPC: H02M7/44 ,  H02J3/38

Abstract: An inverter system for a photovoltaic panel includes: an inverter adapted for transforming a DC voltage from the photovoltaic panel into an AC voltage to be supplied to an electrical grid; a DC link interconnected with the inverter and providing a positive DC link output connectable to a positive pole of the photovoltaic panel and a negative DC link output connectable to a negative pole of the photovoltaic panel; a switch for disconnecting the negative pole of the photovoltaic panel from the DC link; and a controller for controlling the inverter and the switch; wherein the controller is adapted for opening the switch, such that the photovoltaic panel is solely supplyable by the positive DC link output.

公开(公告)号：EP3465904A2

公开(公告)日：2019-04-10

申请号：EP17813782.4

申请日：2017-06-01

Applicant: ABB Schweiz AG ,  Shrestha, Ghanshyam ,  Pan, Zhiguo ,  Mikail, Rajib

Inventor： SHRESTHA, Ghanshyam ,  PAN, Zhiguo ,  MIKAIL, Rajib ,  SCHWEIZER, Mario ,  OIKONOMOU, Nikoloas

IPC: H02P25/098 ,  H02P25/092 ,  H02P25/08 ,  H02P1/04

公开(公告)号：EP4485773A1

公开(公告)日：2025-01-01

申请号：EP23181567.1

申请日：2023-06-26

Applicant: ABB SCHWEIZ AG

Inventor： SCHWEIZER, Mario ,  KIEFERNDORF, Frederick

IPC: H02M1/00 ,  H02M7/483 ,  H02M7/487 ,  H02M7/49

Abstract: A method for controlling an electrical converter (10) is provided. The electrical converter (10) comprises a main stage (12) adapted for converting a DC voltage into an intermediate voltage having at least two voltage levels and a filter cell stage (14) with a filter cell (30) for each phase of the main stage (12), with the main stage (12) comprising a DC link (20) and with each filter cell (30) being adapted for adding or subtracting a cell voltage of the filter cell (30) to the intermediate voltage. The method comprises the steps of: determining a first optimized pulse pattern (OPP MC,abc ) for the main stage (12) and a second optimized pulse pattern (OPP AF,abc ) for the filter cells (30) from an offline-computed optimized pulse pattern (OPP base ), wherein the first optimized pulse pattern (OPP MC,abc ) comprises switching instants for the main stage (12) over a next computation window ( α win ) and wherein the second optimized pulse pattern (OPP AF,abc ) comprises switching instants for filter cells (30) over the next computation window ( α win ); determining a neutral point potential (V NP ) depending on a measured lower DC link voltage (V bot ) and a measured upper DC link voltage (V top ) of the DC link (20); determining a first balancing signal (U NPbal,abc ) for the main stage (12) depending on the determined neutral point potential (V NP ); determining a second balancing signal (U AFbal,abc ) for the filter cells (30) depending on measured cell voltages (V AFC,abc ) of the filter cells (30); determining a first differential mode voltage (U NPbal,DM,abc ) from the first balancing signal (U NPbal,abc ); determining a second differential mode voltage (U AFbal,DM,abc ) from the second balancing signal (U AFbal,abc ); determining a first voltage change (ΔU MC,abc ) from the first balancing signal (U NPbal,abc ) and the second differential mode voltage (U AFbal,DM,abc ); determining a second voltage change (ΔU AF,abc ) from the second balancing signal (U AFbal,abc ) and the first differential mode voltage (U NPbal,DM,abc ); adjusting the first optimized pulse pattern (OPP MC,abc ) by moving its switching instants depending on the first voltage change (ΔU MC,abc ) over the next computation window ( α win ) and adjusting the second optimized pulse pattern (OPP AF,abc ) by moving its switching instants depending on the second voltage change (ΔU AF,abc ) over the next computation window ( α win ); determining a reference flux trajectory (Ψ ref ) over the next computation window ( α win ) depending on the adjusted first and second optimized pulse pattern (OPP MC,abc , OPP AF,abc ); and controlling the electrical converter (10) depending on the reference flux trajectory (Ψ ref ) and on the adjusted first and second optimized pulse pattern (OPP MC,abc , OPP AF,abc ).

公开(公告)号：EP4184748A1

公开(公告)日：2023-05-24

申请号：EP21209565.7

申请日：2021-11-22

Applicant: ABB SCHWEIZ AG

Inventor： COLOMBI, Silvio ,  SCHWEIZER, Mario

IPC: H02J9/06 ,  H02J3/32

Abstract: An uninterruptible power supply device (100) is configured to provide a rated electrical power to an electrical load (L%), and includes: a rectifier module (110, 115), electrically coupled to an electrical power grid; an inverter module (I), electrically coupled to the rectifier module and configured to provide the rated electrical power to the load; a battery converter module (BC), electrically coupled to the rectifier module and the inverter module and configured to receive electrical power from the rectifier module and/or configured to provide electrical power to the inverter module; wherein the rectifier module is configured
to receive electrical power from the electrical power grid and to provide electrical power to the electrical power grid; and wherein the rectifier module has a higher rated power as the rated electrical power of the the inverter module such as to enable the uninterruptible power supply device to provide stabilization support to the electrical power grid.

公开(公告)号：EP4070428A1

公开(公告)日：2022-10-12

申请号：EP20812332.3

申请日：2020-11-26

Applicant: ABB SCHWEIZ AG ,  Hitachi Energy Switzerland AG

Inventor： SCHWEIZER, Mario ,  ALMER, Stefan ,  HARNEFORS, Lennart

IPC: H02J3/24 ,  H02J3/38 ,  H02J3/46

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.

公开(公告)号：EP3832829A1

公开(公告)日：2021-06-09

申请号：EP19212967.4

申请日：2019-12-02

Applicant: ABB Schweiz AG

Inventor： SCHWEIZER, Mario ,  ALMER, Stefan ,  HARNEFORS, Lennart

IPC: H02J3/24 ,  H02J3/38 ,  H02J3/46

Abstract: The present disclosure provides a grid forming vector current control system configured to emulate a virtual synchronous machine (VSM). The disclosed system comprises a droop control unit, a current control unit, a virtual admittance unit and a phase locked loop (PLL) unit. The virtual admittance unit and the PLL unit are configured to emulate an inertia of the VSM. A virtual current source is connected in parallel to the VSM.