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公开(公告)号：US10790819B1
公开(公告)日：2020-09-29
申请号：US16801557
申请日：2020-02-26
Applicant: ABB Schweiz AG
Inventor： Yuzhi Zhang , Utkarsh Raheja , Pietro Cairoli
IPC: H03K17/08 , H03K17/567 , H02H3/00 , H02H5/00 , H03K17/687 , H03K17/735
Abstract: Systems, methods, techniques and apparatuses of power switch control are disclosed. One exemplary embodiment is a power switch comprising a thyristor-based branch including a thyristor device; a FET-based branch coupled in parallel with the thyristor-based branch and including a FET device; and a controller. The controller is structured to turn on the FET device, turn on the thyristor device after turning on the FET device based on a thyristor voltage threshold, and update the thyristor voltage threshold based on a voltage measurement corresponding to the thyristor-based branch measured while the thyristor device is turned on.
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公开(公告)号：US11682920B1
公开(公告)日：2023-06-20
申请号：US17548829
申请日：2021-12-13
Applicant: ABB Schweiz AG
Inventor： Yuzhi Zhang , Yu Du , Xiaoqing Song , Harish Suryanarayana , Veerakumar Bose , Thomas Anthony Kendzia, III , Harshang Shah , Christopher Alan Belcastro
CPC classification number: H02J9/06 , H02J7/0047 , H02J7/00712 , H02J9/068
Abstract: A method of operating a static transfer switch is provided. The method includes monitoring a voltage waveform for each phase of first and second power sources, and calculating flux for each phase of the power sources. The method also includes determining (i) a first flux difference between the respective flux of the first phases of the first and second power sources, (ii) a second flux difference between the respective flux of the second phases of the first and second power sources, and (iii) a third flux difference between the respective flux of the third phases of the first and second power sources. The method further includes turning off a third solid-state switch to disconnect the third phase of the first power source from a load, in response to the controller determining that the third flux difference is greater the first and second flux differences.
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3.发明授权公开(公告)号：US11489333B2
公开(公告)日：2022-11-01
申请号：US17167290
申请日：2021-02-04
Applicant: ABB Schweiz AG
Inventor： Xiaoqing Song , Yu Du , Yuzhi Zhang
Abstract: A method includes energizing a transformer from a deenergized state by turning on a solid-state transfer switch to conductively couple a power source on a first side of the solid-state transfer switch and a transformer on a second side of the solid-state transfer switch, and evaluating an inrush current to the transformer from the power source. The method includes turning off the solid-state transfer switch to conductively decouple the power source and the transformer in response to the inrush current meeting a first criterion, determining a recoupling timing for the solid-state transfer switch, and turning on the solid-state transfer switch in response to the recoupling timing effective to complete energization of the transformer with the inrush current to the transformer being limited by the first criterion.
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公开(公告)号：US20240127369A1
公开(公告)日：2024-04-18
申请号：US17965208
申请日：2022-10-13
Applicant: ABB Schweiz AG
Inventor： Zhenyuan Wang , Alexander Brissette , Yuzhi Zhang , David Lee Coats , Himani Ravindra Pathak
CPC classification number: G06Q50/06 , G06Q30/0204 , G06Q30/0206 , B60L53/60
Abstract: A method for determining a charging price for an electric charging site includes receiving time tags and data obtained based on automated metering infrastructure (AMI) data for the electric charging site, and weather information for a service area of the electric charging site; clustering power consumption of the electric charging site with similar weather information and time tags; calculating a center of mass and a distribution confidence parameter for the clustered power consumption to obtain a look-up table; retrieving historical information of voltage VPCC and injection power Psite pairs that is measured at a point of common coupling (PCC) of the electric charging site; receiving weather forecast information for the service area of the electric charging site; and calculating a dynamic hosting capacity (DHC) curve and a price curve based on the center of mass and the distribution confidence parameter, the VPCC and Psite pairs, and the weather forecast information.
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公开(公告)号：US11683031B1
公开(公告)日：2023-06-20
申请号：US17560551
申请日：2021-12-23
Applicant: ABB Schweiz AG
Inventor： Xiaoqing Song , Yuzhi Zhang , Thomas Kendzia, III , Yu Du
CPC classification number: H03K17/136 , H03K17/0403 , H03K17/06 , H03K17/60
Abstract: In one aspect, a solid-state switching apparatus is provided that includes a pair of anti-parallel thyristors, a quasi-resonant turn-off circuit, a sensor, and a control circuit. The turn-off circuit is coupled in parallel with the pair of anti-parallel thyristors and includes a first selectively conductive path and a second selectively conductive path. The sensor is configured to sense a thyristor current conducted by at least one of the pair of anti-parallel thyristors. The control circuit is configured to receive the sensed thyristor current from the sensor and determine a magnitude of the sensed thyristor current and a polarity of the sensed thyristor current. The control circuit is further configured to activate, in response to determining that the magnitude is greater than a threshold value, one of the first selectively conductive path and the second selectively conductive path based on the polarity to commutate and interrupt the thyristor current.
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Patent Agency Ranking
公开(公告)号：US20230115739A1
公开(公告)日：2023-04-13
申请号：US17500553
申请日：2021-10-13
Applicant: ABB Schweiz AG
Inventor： Harish Suryanarayana , Li Qi , Taosha Jiang , Yuzhi Zhang , Silvio Colombi
IPC: H01M8/04225 , H02J9/06 , H05K7/14 , H01M8/04228
Abstract: A system includes: a ring bus; a plurality of static uninterruptible power supplies (UPSs), each static UPS of the plurality of static UPSs including: at least one battery; an input that is electrically connected to a first external electrical power source; and an output that is electrically connected to a load, and, via a first corresponding choke, to the ring bus; at least one fuel-cell interface converter (FIC) that converts direct current (DC) electrical power to alternating current (AC) electrical power, each FIC of the at least one FIC being electrically connected to the ring bus via a second corresponding choke; and a fuel cell module corresponding to and electrically connected to each FIC, the fuel cell module including a fuel cell.
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公开(公告)号：US11018666B1
公开(公告)日：2021-05-25
申请号：US16795988
申请日：2020-02-20
Applicant: ABB Schweiz AG
Inventor： Yu Du , Xiaoquing Song , Yuzhi Zhang , Adil Oudrhiri
Abstract: An apparatus and method that can accelerate the turn off time for a thyristor current interrupter. Following commutation of a load current from a main thyristor to an auxiliary turn-off unit, a capacitor of the auxiliary turn-off unit can provide a resonant current to create a zero current crossing for turning the main thyristor off, as well as provide a reverse bias voltage for the main thyristor. The auxiliary turn-off unit can hold the main thyristor off and facilitate sufficient time being available for main thyristor to block forward system voltage. A voltage level of another capacitor of the auxiliary turn-off unit can, with a switch of the auxiliary turn-off unit and the main thyristor turned off, be increased to a level that triggers at least one voltage-clamping unit to absorb electrical power from that capacitor. The load current passing in the auxiliary turn-off unit can be decreased as the electrical power is absorbed to a level at which one or more auxiliary thyristor switches of the auxiliary turn-off unit can be turned off.
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公开(公告)号：US11742849B2
公开(公告)日：2023-08-29
申请号：US17510299
申请日：2021-10-25
Applicant: ABB Schweiz AG
Inventor： Yuzhi Zhang , Xiaoqing Song , Veerakumar Bose
CPC classification number: H03K17/60 , H01L29/7408 , H02J3/007 , H03K17/0403 , H03K17/06 , H03K17/72
Abstract: Disclosed herein is a hybrid resonant capacitor circuit including a first capacitor configured to discharge resonant current to interrupt a load current to a switch in parallel with the hybrid resonant capacitor circuit, a second capacitor coupled in parallel with the first capacitor, wherein the second capacitor is configured to transfer energy stored in the second capacitor to the first capacitor after discharge of the resonant current from the first capacitor, and a current limiter coupled in series with the second capacitor. A static transfer switch including a thyristor switch and the hybrid resonant capacitor circuit is also disclosed herein, as is a method for facilitating multiple consecutive voltage source transfers between a first voltage source and a second voltage source powering a load, using the hybrid resonant capacitor circuit.
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公开(公告)号：US20230208416A1
公开(公告)日：2023-06-29
申请号：US17560551
申请日：2021-12-23
Applicant: ABB Schweiz AG
Inventor： Xiaoqing Song , Yuzhi Zhang , Thomas Kendzia, III , Yu Du
CPC classification number: H03K17/136 , H03K17/06 , H03K17/0403 , H03K17/60
Abstract: In one aspect, a solid-state switching apparatus is provided that includes a pair of anti-parallel thyristors, a quasi-resonant turn-off circuit, a sensor, and a control circuit. The turn-off circuit is coupled in parallel with the pair of anti-parallel thyristors and includes a first selectively conductive path and a second selectively conductive path. The sensor is configured to sense a thyristor current conducted by at least one of the pair of anti-parallel thyristors. The control circuit is configured to receive the sensed thyristor current from the sensor and determine a magnitude of the sensed thyristor current and a polarity of the sensed thyristor current. The control circuit is further configured to activate, in response to determining that the magnitude is greater than a threshold value, one of the first selectively conductive path and the second selectively conductive path based on the polarity to commutate and interrupt the thyristor current.
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公开(公告)号：US20230187963A1
公开(公告)日：2023-06-15
申请号：US17548829
申请日：2021-12-13
Applicant: ABB Schweiz AG
Inventor： Yuzhi Zhang , Yu Du , Xiaoqing Song , Harish Suryanarayana , Veerakumar Bose , Thomas Anthony Kendzia, III , Harshang Shah , Christopher Alan Belcastro
CPC classification number: H02J9/06 , H02J7/0047 , H02J7/00712
Abstract: A method of operating a static transfer switch is provided. The method includes monitoring a voltage waveform for each phase of first and second power sources, and calculating flux for each phase of the power sources. The method also includes determining (i) a first flux difference between the respective flux of the first phases of the first and second power sources, (ii) a second flux difference between the respective flux of the second phases of the first and second power sources, and (iii) a third flux difference between the respective flux of the third phases of the first and second power sources. The method further includes turning off a third solid-state switch to disconnect the third phase of the first power source from a load, in response to the controller determining that the third flux difference is greater the first and second flux differences.
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