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公开(公告)号：US20230042964A1
公开(公告)日：2023-02-09
申请号：US17789586
申请日：2020-12-17
Applicant: ABB Schweiz AG
Inventor： Ioannis Tsoumas , Tobias Geyer , Mario Schweizer , Eduardo Rohr , Frederick Kieferndorf , Wim Van-der-Merwe , Manuel Vetterli , Christian Meier
IPC: H02M7/487 , H02M7/5395 , H02M1/12
Abstract: Described herein is a method of operating a power electronic converter device for an electrical power conversion system. The power electronic converter device includes a converter circuit including an input side, an output side, a first converter, and at least one second converter. The second converter includes at least one floating cell with a DC intermediate circuit and semiconductor devices. The method includes: switching the semiconductor devices of the floating cell at switching instants determined with optimized pulse patterns or carrier-based pulse width modulation; determining a fundamental voltage component for the floating cell; and generating the fundamental voltage component in the actual voltage of the floating cell by modifying the switching instants, such that a voltage VC AF of the DC intermediate circuit is lying in a given reference voltage range for balancing the DC intermediate circuit of the floating cell.
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公开(公告)号：US20190190397A1
公开(公告)日：2019-06-20
申请号：US16272234
申请日：2019-02-11
Applicant: ABB Schweiz AG
Inventor： Wim Van-Der-Maerwen , Tobias Geyer , Mario Schweizer , Ioannis Tsoumas
CPC classification number: H02M5/4585 , H02M7/487 , 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.
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公开(公告)号：US20240204650A1
公开(公告)日：2024-06-20
申请号：US18556313
申请日：2022-04-19
Applicant: ABB Schweiz AG
Inventor： Ioannis Tsoumas , Georgios Darivianakis , Daniel Ulmer
CPC classification number: H02M1/12 , H02J3/01 , H02J3/36 , H02J3/38 , H02J2300/28
Abstract: The present disclosure provides a method for controlling an energy conversion system. The system includes a rotating electrical machine, a machine-side converter, a DC-link, and a grid-side converter. The method includes modulating the machine-side converter for converting an AC voltage of the rotating electrical machine into a DC voltage supplied to the DC-link, and modulating the grid-side converter to convert a DC-link voltage at the DC-link into an AC output voltage to be supplied to an electrical grid, wherein the machine-side converter is modulated with first optimized pulse patterns, which have been optimized such that a peak value of the DC-link voltage or of a DC-link voltage component of the DC-link voltage is constrained to a predetermined value.
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Patent Agency Ranking
公开(公告)号：US11979094B2
公开(公告)日：2024-05-07
申请号：US17789899
申请日：2020-12-16
Applicant: ABB Schweiz AG
Inventor： Ralph Mario Burkart , Ioannis Tsoumas , Frederick Kieferndorf , Tobias Geyer
CPC classification number: H02M7/49 , H02M1/0022 , H02M1/0067 , H02M1/12 , H02M1/15 , H02M7/487
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 from 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.
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公开(公告)号：US20250167665A1
公开(公告)日：2025-05-22
申请号：US18839642
申请日：2023-02-13
Applicant: ABB Schweiz AG
Inventor： Ioannis Tsoumas , Lennart Harnefors
Abstract: A converter system includes at least two branches, where each branch includes an AC-to-DC converter and a DC link cascade connected with each other. A method includes: determining at least two AC-side currents, each of which is input into one of the AC-to-DC converters; determining from the AC-side currents, a voltage reference for each of the AC-to-DC converters; determining a DC link ripple indicator; determining a converter reference correction from the DC link ripple indicator, such that a higher order harmonic in the average DC link voltage is damped; determining corrected voltage references for the AC-to-DC converter by adding the converter reference correction to the voltage references of the AC-to-DC converters or by adding the converter reference correction to an average current reference for the AC-to-DC converters; and controlling the AC-to-DC converters with the respective corrected voltage references.
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公开(公告)号：US11784583B2
公开(公告)日：2023-10-10
申请号：US17601312
申请日：2020-03-03
Applicant: ABB Schweiz AG
Inventor： Mario Schweizer , Tobias Geyer , Ioannis Tsoumas
Abstract: An electrical converter includes a main converter for generating a first output voltage and a converter cell for converting the first output voltage into a second output voltage. A method for operating an electrical converter includes: receiving a reference voltage for the electrical converter; pulse width modulating the reference voltage with a first modulation frequency for generating a first switching signal for the main converter; switching the main converter with the first switching signal to generate the first output voltage; estimating the first output voltage from the first switching signal; determining a voltage error by subtracting the estimated first output voltage from the reference voltage; pulse width modulating the voltage error with a second modulation frequency, which is higher than the first modulation frequency, for generating a further switching signal for the converter cell; and switching the converter cell with the further switching signal to generate the second output voltage.
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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.
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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
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.
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