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.

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

IPC: H02H9/00 ,  H02H1/00

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.

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

IPC: H02J3/00 ,  H02J9/06 ,  H02J7/34

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.

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

IPC: H03K17/13 ,  H03K17/60 ,  H03K17/04 ,  H03K17/06

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.

公开(公告)号：US11469757B2

公开(公告)日：2022-10-11

申请号：US17072470

申请日：2020-10-16

Applicant: ABB Schweiz AG

Inventor： Pietro Cairoli ,  Eddy Aeloiza ,  Xiaoqing Song

IPC: H03K17/567 ,  H03K17/0812 ,  H03K17/76

Abstract: Systems, methods, techniques and apparatuses of power switches are disclosed. One exemplary embodiment is a power switch comprising a first semiconductor device and a second semiconductor device coupled together in a first anti-series configuration between a first terminal and a second terminal; a third semiconductor device and a fourth semiconductor device coupled together in a second anti-series configuration between the first terminal and the second terminal; a controller configured to operate the power switch to simultaneously conduct a first portion of a load current from the first terminal to the second terminal by closing the first semiconductor device and the second semiconductor device, and to conduct a second portion of the load current from the first terminal to the second terminal by closing the third semiconductor device and the fourth semiconductor device.

公开(公告)号：US12119817B2

公开(公告)日：2024-10-15

申请号：US17549520

申请日：2021-12-13

Applicant: ABB Schweiz AG

Inventor： Xiaoqing Song ,  Utkarsh Raheja ,  Pietro Cairoli ,  Sayan Acharya

IPC: H03K17/687 ,  H02H3/087 ,  H02H7/22

CPC classification number: H03K17/6874 ,  H02H3/087 ,  H02H7/22

Abstract: A gate driver circuit is provided that includes a turn-on path, a turn-off path, and a fast discharge path. The turn-on path is couplable between a gate of a solid-state switch and a voltage turn-on signal (VGON) from a gate driver, where the turn-on path defines a turn-on time for the solid-state switch. The turn-off path is couplable between the gate and a voltage turn-off signal (VGOFF) from the gate driver, where the turn-off path defines a turn-off time for the solid-state switch. The fast discharge path is selectively couplable in parallel with the turn-off path during a portion of a gate-to-source voltage (VGS) transition for the solid-state switch, where the turn-off path in parallel with the fast discharge path defines a turn-off delay for the solid-state switch and each of the turn-on time, the turn-off time, and the turn-off delay are independently configurable.

公开(公告)号：US11973493B2

公开(公告)日：2024-04-30

申请号：US17326914

申请日：2021-05-21

Applicant: ABB Schweiz Ag

Inventor： Xiaoqing Song ,  Yu Du

IPC: H01C7/12 ,  H03K17/082

CPC classification number: H03K17/082 ,  H01C7/12

Abstract: Unique systems, methods, techniques and apparatuses of solid state circuit breaker protection are disclosed. One exemplary embodiment is a solid state circuit breaker comprising a primary switching device including a first terminal and a second terminal and a voltage clamping circuit coupled in parallel with the primary switching device. The voltage clamping circuit includes a metal-oxide varistor (MOV) coupled in series between the first terminal and an auxiliary semiconductor device, the auxiliary semiconductor device being arranged so as to selectively couple the MOV with the second terminal, and a bypass circuit coupled between the first terminal and the auxiliary semiconductor device.

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

IPC: H02J9/06 ,  H02J7/00

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.

公开(公告)号：US11509128B2

公开(公告)日：2022-11-22

申请号：US17019590

申请日：2020-09-14

Applicant: ABB Schweiz AG

Inventor： Xiaoqing Song ,  Taosha Jiang ,  Antonello Antoniazzi

IPC: H02H9/00 ,  H02H3/08 ,  H02H1/00

Abstract: A multi-port solid-state circuit breaker system includes a first electrical power bus, a second electrical power bus, and a plurality of breaker legs conductively coupled with the first electrical power bus and the second electrical power bus in parallel with one another. Each of the plurality of breaker legs includes a first power semiconductor device coupled in series with a second power semiconductor device and an input/output port intermediate the first power semiconductor device and the second power semiconductor device. At least one of the first semiconductor device and the second semiconductor device includes an actively controlled switching device. A surge suppressor is conductively coupled in parallel with the plurality of breaker legs.

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

IPC: H02H9/00 ,  H02H1/00

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.