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公开(公告)号：US20220247324A1
公开(公告)日：2022-08-04
申请号：US17644495
申请日：2021-12-15
Applicant: ABB Schweiz AG
Inventor： Federico Bertoldi , Kalle Ilves , Nan Chen
Abstract: A converter and a method of operating a converter. The converter comprising a DC link capacitor, an upper arm (S1) and a lower arm (S4) with switching cells in series, an upper switch (S2) and a lower switch (S3). The upper switch (S2) and the lower switch (S3) are connected together and the connection point forming an output voltage terminal (a). The converter comprising further an upper valve component and a lower valve component, which are arranged such that the upper valve component allows current from the center point of the DC link capacitor towards the upper arm and the lower valve component allows current from the lower arm towards center point of the DC link capacitor. A current path through the upper valve component or the lower valve component comprises inductance to form a resonance circuit.
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Patent Agency Ranking
公开(公告)号：US10284076B2
公开(公告)日：2019-05-07
申请号：US16070479
申请日：2016-02-12
Applicant: ABB SCHWEIZ AG
Inventor： Nan Chen , Sari Laihonen , Ludvig De Laval , Erik Doré
Abstract: A converter module for power converter stations includes a first terminal for input/output of an electrical current to the converter module via a first connection line, a second terminal for output/input of the current from the converter module via a second connection line, and a by-pass switch connected between the first terminal and the second terminal. The converter module further includes a first switching module and a second switching module connected in series via a first node connected to either one of the first terminal and the second terminal and at least two capacitor units. The first switching module includes two switching devices and the second switching module is connected between the first node and a second node. In the converter module, a first capacitor unit is connected from the second node to a first switching device of the first switching module and a second capacitor unit is connected from the second node to a second switching device of the first switching module to form two separate current paths between the first node and the second node. Accordingly, a reduction of the energy discharge is obtained upon failure of one or more of the switching devices or modules.
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公开(公告)号：US10181726B2
公开(公告)日：2019-01-15
申请号：US15555884
申请日：2015-03-06
Applicant: ABB SCHWEIZ AG
Inventor： Lars Jonsson , Nan Chen , Stefan Thorburn
Abstract: An AC power transformer includes primary and secondary windings for at least a first AC phase and a second AC phase, and a core for said at least first and second phases. The transformer further includes a control unit for transferring power from the first phase to the second phase via magnetic coupling in the core such that the sum of the phase vectors of all of the at least first and second phases is substantially zero.
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公开(公告)号：US11784581B2
公开(公告)日：2023-10-10
申请号：US17644495
申请日：2021-12-15
Applicant: ABB Schweiz AG
Inventor： Federico Bertoldi , Kalle Ilves , Nan Chen
CPC classification number: H02M7/487 , H02M7/4815 , H02M7/539 , H02M7/4835 , H02M7/4837
Abstract: A converter and a method of operating a converter. The converter comprising a DC link capacitor, an upper arm (S1) and a lower arm (S4) with switching cells in series, an upper switch (S2) and a lower switch (S3). The upper switch (S2) and the lower switch (S3) are connected together and the connection point forming an output voltage terminal (a). The converter comprising further an upper valve component and a lower valve component, which are arranged such that the upper valve component allows current from the center point of the DC link capacitor towards the upper arm and the lower valve component allows current from the lower arm towards center point of the DC link capacitor. A current path through the upper valve component or the lower valve component comprises inductance to form a resonance circuit.
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公开(公告)号：US20200228113A1
公开(公告)日：2020-07-16
申请号：US16482211
申请日：2017-02-15
Applicant: ABB Schweiz AG
Inventor： Nan Chen , Kalle Ilves , Muhammad Nawaz
Abstract: The present disclosure relates to a semiconductor switch leg S for a Power Electronic (PE) converter (1). The switch leg comprises a plurality of parallel connected semiconductor devices Sa-d. Each semiconductor device is connected with a positive conductor a-d+ connecting the semiconductor device to a positive terminal of an energy storing device (2) of the converter, and a negative conductor a-d-connecting the semiconductor device to a negative terminal of the energy storing device (2) of the converter, the semiconductor device together with the positive conductor and the negative conductor forming a current path across the energy storing device. The semiconductor switch leg comprises a plurality of magnetic coupling devices 3a-d, each magnetic coupling device being arranged between the two current paths of respective two neighbouring semiconductor devices of the plurality of semiconductor devices such that the current path of one of the two semiconductor devices and the current path of the other of the two semiconductor devices
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公开(公告)号：US10886914B2
公开(公告)日：2021-01-05
申请号：US16482211
申请日：2017-02-15
Applicant: ABB Schweiz AG
Inventor： Nan Chen , Kalle Ilves , Muhammad Nawaz
Abstract: The present disclosure relates to a semiconductor switch leg S for a Power Electronic (PE) converter (1). The switch leg comprises a plurality of parallel connected semiconductor devices Sa-d. Each semiconductor device is connected with a positive conductor a-d+ connecting the semiconductor device to a positive terminal of an energy storing device (2) of the converter, and a negative conductor a-d-connecting the semiconductor device to a negative terminal of the energy storing device (2) of the converter, the semiconductor device together with the positive conductor and the negative conductor forming a current path across the energy storing device. The semiconductor switch leg comprises a plurality of magnetic coupling devices 3a-d, each magnetic coupling device being arranged between the two current paths of respective two neighbouring semiconductor devices of the plurality of semiconductor devices such that the current path of one of the two semiconductor devices and the current path of the other of the two semiconductor devices pass via the magnetic coupling device, and such that each current path passes via two of said plurality of magnetic coupling devices.
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