公开(公告)号：US20250132693A1

公开(公告)日：2025-04-24

申请号：US18836404

申请日：2023-01-10

Applicant: ABB SCHWEIZ AG

Inventor： Georgios Darivianakis ,  Tobias Geyer ,  Peter Muszynski ,  Ioannis Tsoumas

IPC: H02M7/5395

Abstract: A method for controlling an electrical converter for driving an electrical machine comprises the steps of: estimating a stator flux vector depending on at least one measurement in the electrical converter; determining an optimized pulse pattern for the electrical converter depending on a reference angular stator frequency; determining a reference stator angle of the stator flux vector depending on the reference angular stator frequency; determining a reference stator flux vector depending on the optimized pulse pattern and the reference stator angle; determining a difference between the reference stator flux vector and the estimated stator flux vector; modifying switching instants of the optimized pulse pattern, such that the difference is minimized; and applying at least a part of the modified optimized pulse pattern to the electrical converter.

公开(公告)号：US12237761B2

公开(公告)日：2025-02-25

申请号：US17908159

申请日：2021-01-28

Applicant: ABB Schweiz AG

Inventor： Tobias Geyer ,  Hendrik du Toit Mouton

IPC: H02M1/12 ,  H02M7/483

Abstract: Described herein is method for controlling an electrical converter, the electrical converter converting an input voltage (vin) into a multi-level output voltage (vout), the method incudes: determining an optimized pule pattern (u(x)); and determining switching states from the optimized pulse pattern (u(x)) and applying the switching states to semiconductor switches of the electrical converter, such that the multi-level output voltage (vout) is generated, where the optimized pulse pattern (u(x)) includes a plurality of switching transitions (Δu), each switching transition (Δui) encoding a transition between two different levels of the multi-level output voltage (vout), at a switching angle (xi), where the optimized pulse pattern (u(x)) is determined by optimizing a cost function, where the cost function J(x)=ΔuTA(x)Δu is a cost matrix A(x), and where each entry of the cost matrix A(x) depends on polynomials into which the switching angles (xi) are input.

公开(公告)号：US11967908B2

公开(公告)日：2024-04-23

申请号：US17764793

申请日：2020-09-29

Applicant: ABB Schweiz AG

Inventor： Martinus David Dorfling ,  Hendrik Du Toit Mouton ,  Tobias Geyer

IPC: H02M7/5387 ,  H02P27/12 ,  H02P27/14

CPC classification number: H02M7/53876 ,  H02P27/12 ,  H02P27/14

Abstract: Disclosed herein is a method for controlling an electrical converter system that includes: determining a nominal pulse pattern (tp,i*, Δup,i*) and a reference trajectory (x*) of at least one electrical quantity of the electrical converter system over a horizon of future sampling instants, the nominal pulse pattern (tp,i*, Δup,i*) comprises switching transitions (Δup,i*) between output voltages of an electrical converter of the electrical converter system and the reference trajectory (x*) indicates a desired future development of an electrical quantity of the converter system; determining a small-signal pulse pattern (ũabc(t, λp,i)) by minimizing a cost function; determining a modified pulse pattern (topt,p,i, Δup,i) by moving the switching transitions of the nominal pulse pattern (tp,i*, Δup,i*) to generate modified switching transitions; and applying at least the next switching transition of the modified pulse pattern (topt,p,i, Δup,i) to the electrical converter system.

公开(公告)号：US20230052562A1

公开(公告)日：2023-02-16

申请号：US17789899

申请日：2020-12-16

Applicant: ABB Schweiz AG

Inventor： Ralph Mario Burkart ,  Ioannis Tsoumas ,  Frederick Kieferndorf ,  Tobias Geyer

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

Abstract: In one embodiment, a method of operating a power electronic converter device for an electrical power converter system is provided. The power electronic converter device includes a converter circuit, a first converter, and a second converter. The first converter and the second converter are switch with a switching pattern such that the first converter and the second converter generate voltages with stepwise voltages changes and an output voltage of the power electronic converter device results frum a superposition of the voltages of the first converter and the second converter. The switching pattern includes switching instants for the second converter such that the voltage of the second converter leaves the fundamental voltage component of the voltage of the first converter unchanged, such that the second converter does not generate a fundamental component of the output voltage.

公开(公告)号：US10707781B2

公开(公告)日：2020-07-07

申请号：US16212752

申请日：2018-12-07

Applicant: ABB Schweiz AG

Inventor： Tobias Geyer ,  Petros Karamanakos

IPC: H02M7/5387 ,  H02M1/00 ,  H02P27/08 ,  H02M1/12 ,  H02P23/14 ,  H02M7/5395 ,  H02M1/14 ,  H02M7/483

Abstract: Systems, methods, techniques and apparatuses of power converters are disclosed. One exemplary embodiment is a method of controlling and modulating a converter with a controller including forming a mathematical representation of the electrical system including the converter, providing reference values for controlled variables, calculating gradients of controlled variables based on the mathematical representation of the electrical system, determining possible switching sequences in the modulation period, the switching sequence defining the order in which the switches are switched, for each possible switching sequence, minimizing the error between the provided references and the corresponding controlled variables based on the calculated gradients by optimizing the switching time instants of the switching sequence, selecting the switching sequence with the smallest error, and applying the switching sequence with the corresponding switching times in the modulation period to modulate the controllable switches.

公开(公告)号：US10554142B2

公开(公告)日：2020-02-04

申请号：US16326038

申请日：2016-08-18

Applicant: ABB SCHWEIZ AG

Inventor： Michail Vasiladiotis ,  Tobias Geyer ,  Alexandre Christe

IPC: H02M5/22 ,  H02M5/297 ,  H02M1/08 ,  H02J3/01 ,  H02M1/12 ,  H02J3/34

Abstract: A method of decoupled modulation of a direct AC/AC MMC between a first AC network L having a first waveform and a second AC network R having a second waveform includes performing first and second modulations based on respective reference signals of the first and second AC networks to generate, for each phase leg, first and second integer command signals corresponding to first and second combinations of cell states in the branches of the phase leg needed for generating the first and second waveforms. The method also includes, based on the first and second integer command signals, mapping to each branch a number of cell states to be used for concurrently generating both the first and second waveforms.

公开(公告)号：US20190181775A1

公开(公告)日：2019-06-13

申请号：US16212752

申请日：2018-12-07

Applicant: ABB Schweiz AG

Inventor： Tobias Geyer ,  Petros Karamanakos

IPC: H02M7/5387 ,  H02M1/14 ,  H02M1/12

Abstract: A method of controlling and modulating a converter and a converter. The method includes forming a mathematical representation of the electrical system including the converter, providing reference values for controlled variables, calculating gradients of controlled variables based on the mathematical representation of the electrical system, determining possible switching sequences in the modulation period, the switching sequence defining the order in which the switches are switched, for each possible switching sequence, minimizing the error between the provided references and the corresponding controlled variables based on the calculated gradients by optimizing the switching time instants of the switching sequence, selecting the switching sequence with the smallest error, and applying the switching sequence with the corresponding switching times in the modulation period to modulate the controllable switches.