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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
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.
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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
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.
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公开(公告)号：US11563370B2
公开(公告)日：2023-01-24
申请号：US17009135
申请日：2020-09-01
Applicant: ABB Schweiz AG
Inventor： Sami Pettersson , Mario Schweizer , Ki-Bum Park , Francisco Canales
Abstract: A protection circuit for a power converter with cascaded bipolar and/or unipolar semiconductors is provided. The protection circuit includes at least one comparator circuit which is adapted to monitor a voltage characteristic on a collector-emitter path of at least one semiconductor which is arranged in a polarity selection stage of the power converter and/or to monitor a voltage characteristic on at least one capacitor, which is arranged in the power converter. The at least one comparator circuit is further adapted to output an electrical signal, representing the voltage characteristic of the semiconductor and/or the at least one capacitor to at least one evaluation unit. The at least one evaluation unit is further adapted to evaluate the result from the at least one comparator circuit and to deactivate the semiconductors in case that the voltage characteristic of the semiconductors and/or the capacitors deviate from a predetermined threshold.
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公开(公告)号：US20220407430A1
公开(公告)日：2022-12-22
申请号：US17840790
申请日：2022-06-15
Applicant: ABB Schweiz AG
Inventor： Mario Schweizer , Ivan Furlan , Nocola Notari
Abstract: A converter system includes a rectifier, a DC link stage and an inverter connected in series. A control unit includes a slow reference frame angle determination unit that generates a slow reference frame angle θr,slow representing an angle that is slowly following a grid phase deviation, and a fast Phase Locked Loop generating a fast reference frame angle θr,fast representing an angle that is fast following a grid phase deviation. The control unit uses the slow reference frame angle θr,slow and the fast reference frame angle θr,fast to control the rectifier output current, and the fast reference frame angle θr,fast to control the inverter output voltage and to synchronize the inverter output voltage with the grid voltage.
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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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Patent Agency Ranking
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：US20210119442A1
公开(公告)日：2021-04-22
申请号：US17009135
申请日：2020-09-01
Applicant: ABB Schweiz AG
Inventor： Sami Pettersson , Mario Schweizer , Ki-Bum Park , Francisco Canales
Abstract: A protection circuit for a power converter with cascaded bipolar and/or unipolar semiconductors is provided. The protection circuit includes at least one comparator circuit which is adapted to monitor a voltage characteristic on a collector-emitter path of at least one semiconductor which is arranged in a polarity selection stage of the power converter and/or to monitor a voltage characteristic on at least one capacitor, which is arranged in the power converter. The at least one comparator circuit is further adapted to output an electrical signal, representing the voltage characteristic of the semiconductor and/or the at least one capacitor to at least one evaluation unit. The at least one evaluation unit is further adapted to evaluate the result from the at least one comparator circuit and to deactivate the semiconductors in case that the voltage characteristic of the semiconductors and/or the capacitors deviate from a predetermined threshold.
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公开(公告)号：US10177633B2
公开(公告)日：2019-01-08
申请号：US14581927
申请日：2014-12-23
Applicant: ABB Schweiz AG
Inventor： Ghanshyam Shrestha , Zhiguo Pan , Mario Schweizer , Darren Dale Tremelling , Waqas Mahmood Arshad
IPC: H02K11/00 , H02K21/14 , H02K17/16 , H02K3/12 , H02K3/28 , H02K9/06 , H02K11/04 , H02K3/52 , H02K11/33 , H02K1/14 , H02K5/22
Abstract: The subject matter described herein includes a multiphase fractional slot concentrated winding machine. One such machine includes a machine module including a rotor and a stator. The stator includes a plurality of radially extending teeth. Each tooth is individually wound with a coil. The machine further includes a multiphase series converter circuit physically connected to an end of the machine module to energize the coils for multiphase operation.
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公开(公告)号：US09876456B2
公开(公告)日：2018-01-23
申请号：US15170420
申请日：2016-06-01
Applicant: ABB Schweiz AG
Inventor： Zhiguo Pan , Mario Schweizer , Ghanshyam Shrestha
Abstract: A bridge converter for a multi-phase electrical machine has a number of bridge cells connected in series. Each bridge cell has a controller. The bridge converter includes a sensor operative to provide a commutation signal to at least one controller. A multi-phase electrical machine has a plurality of stator windings and a bridge converter having a number of bridge cells connected in series. Each bridge cell has a controller. The bridge converter includes a sensor operative to provide a commutation signal to at least one controller.
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10.发明授权公开(公告)号：US09651603B2
公开(公告)日：2017-05-16
申请号：US15100575
申请日：2014-11-27
Applicant: ABB Schweiz AG
Inventor： Mario Schweizer , Roman Grinberg
CPC classification number: G01R31/028 , G01R31/40 , H02M1/088 , H02M7/483 , H02M2001/0006 , H02M2007/4835
Abstract: A method and arrangement for determining a capacitor degradation parameter associated with the degree of degradation of a cell capacitor in a converter cell of a power converter including a plurality of identical converter cells, including redundant converter cells, which converter cell, prior to determining the capacitor degradation parameter, has been bypassed. The method includes a) obtaining a measurement parameter value associated with discharging of the cell capacitor, forming a dc-link, from a measurement start voltage level at a measurement start time to a measurement end voltage level at a measurement end time, and b) determining a value of the capacitor degradation parameter based on the measurement parameter value.
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