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

IPC: H03K17/60 ,  H03K17/72 ,  H01L29/74 ,  H03K17/04 ,  H03K17/06 ,  H02J3/00

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.

公开(公告)号：US20220123745A1

公开(公告)日：2022-04-21

申请号：US17072470

申请日：2020-10-16

Applicant: ABB Schweiz AG

Inventor： Pietro Cairoli ,  Eddy Aeloiza ,  Xiaoqing Song

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

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：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

IPC: H02J9/00 ,  H02J3/00 ,  H02J7/34 ,  H02J9/06

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.