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公开(公告)号：US20230128049A1
公开(公告)日：2023-04-27
申请号：US17510299
申请日：2021-10-25
Applicant: ABB Schweiz AG
Inventor： Yuzhi Zhang , Xiaoqing Song , Veerakumar Bose
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：US10903649B1
公开(公告)日：2021-01-26
申请号：US16521694
申请日：2019-07-25
Applicant: ABB Schweiz AG
Inventor： Adil Oudrhiri , Yu Du , Yuzhi Zhang , Xiaoqing Song
Abstract: A static transfer switch is provided for supplying power to a load alternately from two different power sources. Switching between the two power sources may occur within a fraction of one electrical cycle. In response to sensing degraded performance in the power source supplying the load, a gate signal is turned off to a first switch coupled between the power source and the load. A third switch coupled between an energy storage and the first switch is also closed to release a current to the input or output of the first switch The current forces a drop in current conducted through the first switch and causes the first switch to open and stop conducting current. A second switch coupled between the alternate power source and the load is then closed to supply power to the load from the alternate power source.
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公开(公告)号：US12113396B1
公开(公告)日：2024-10-08
申请号：US18182908
申请日：2023-03-13
Applicant: ABB Schweiz AG
Inventor： Li Qi , Harish Suryanarayana , Silvio Colombi , Taosha Jiang , Yuzhi Zhang , Harry Bye Handlin
CPC classification number: H02J9/062 , H02J1/10 , H02J9/061 , H01M2250/10 , H02J2300/30 , Y02B90/10 , Y02B90/20
Abstract: In one aspect, a fuel cell power system is provided. The fuel cell power system includes a ring bus, a plurality of bidirectional uninterruptible power supplies (UPSs), a plurality of direct current (DC) fuel cell modules, and a plurality of bidirectional direct current to alternating current (DC-AC) power converters. Each of the plurality of UPSs is electrically coupled to at least one battery, an AC utility feed, a load, and via a choke, the ring bus. Each of the plurality of DC fuel cell modules includes one or more fuel cells coupled to a hydrogen storage. Each of the plurality of bidirectional DC-AC power converters is electrically coupled to a corresponding one of the plurality of DC fuel cell modules and a corresponding one of the plurality of bidirectional UPSs at the AC utility feed.
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Patent Agency Ranking
公开(公告)号：US20240313574A1
公开(公告)日：2024-09-19
申请号：US18182908
申请日：2023-03-13
Applicant: ABB Schweiz AG
Inventor： Li Qi , Harish Suryanarayana , Silvio Colombi , Taosha Jiang , Yuzhi Zhang , Harry Bye Handlin
IPC: H02J9/06
CPC classification number: H02J9/062 , H02J1/10 , H02J9/061 , H01M2250/10 , H02J2300/30 , Y02B90/10 , Y02B90/20
Abstract: In one aspect, a fuel cell power system is provided. The fuel cell power system includes a ring bus, a plurality of bidirectional uninterruptible power supplies (UPSs), a plurality of direct current (DC) fuel cell modules, and a plurality of bidirectional direct current to alternating current (DC-AC) power converters. Each of the plurality of UPSs is electrically coupled to at least one battery, an AC utility feed, a load, and via a choke, the ring bus. Each of the plurality of DC fuel cell modules includes one or more fuel cells coupled to a hydrogen storage. Each of the plurality of bidirectional DC-AC power converters is electrically coupled to a corresponding one of the plurality of DC fuel cell modules and a corresponding one of the plurality of bidirectional UPSs at the AC utility feed.
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公开(公告)号：US11955835B2
公开(公告)日：2024-04-09
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
CPC classification number: H02J9/062 , H02J9/068 , G06F1/263 , H02J2300/30
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：US11588483B1
公开(公告)日：2023-02-21
申请号：US17580399
申请日：2022-01-20
Applicant: ABB Schweiz AG
Inventor： Xiaoqing Song , Yu Du , Yuzhi Zhang , Harshang Shah
IPC: H03K17/72 , H03K17/567
Abstract: In one aspect, a quasi-resonant turn-off circuit is provided. The quasi-resonant turn-off circuit is couplable in parallel with a pair of anti-parallel thyristors. The quasi-resonant turn-off circuit includes a resonant capacitor and an energy recovery circuit. The resonant capacitor is configured to supply a charge to the pair of anti-parallel thyristors to decrease a turn-off time of the pair of anti-parallel thyristors. The energy recovery circuit is configured to recharge the resonant capacitor using remnant energy left in parasitic inductances coupled to the quasi-resonant turn-off circuit after the pair of anti-parallel thyristors is off.
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17.发明申请公开(公告)号：US20220247167A1
公开(公告)日：2022-08-04
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：US20210028621A1
公开(公告)日：2021-01-28
申请号：US16521694
申请日：2019-07-25
Applicant: ABB Schweiz AG
Inventor： Adil Oudrhiri , Yu Du , Yuzhi Zhang , Xiaoqing Song
Abstract: A static transfer switch is provided for supplying power to a load alternately from two different power sources. Switching between the two power sources may occur within a fraction of one electrical cycle. In response to sensing degraded performance in the power source supplying the load, a gate signal is turned off to a first switch coupled between the power source and the load. A third switch coupled between an energy storage and the first switch is also closed to release a current to the input or output of the first switch The current forces a drop in current conducted through the first switch and causes the first switch to open and stop conducting current. A second switch coupled between the alternate power source and the load is then closed to supply power to the load from the alternate power source.
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