公开(公告)号：US11824346B2

公开(公告)日：2023-11-21

申请号：US17418477

申请日：2019-12-23

申请人： SUPERGRID INSTITUTE

发明人： Yang Yang

IPC分类号： H02H7/26

CPC分类号： H02H7/268

摘要： A current cut-off device for high-voltage direct current, includes: at least one primary mechanical switch placed in a main line between a primary point and a secondary point; a primary surge arrester arranged in parallel with the primary switch; and an oscillatory circuit arranged electrically in parallel with the primary switch and electrically in parallel with the primary surge arrester. The oscillation circuit includes, electrically in series, at least an inductance, a capacitance and an oscillation trigger. The device has, in the oscillation circuit, a controllable device for varying the resistance value inserted in series into the oscillation circuit.

公开(公告)号：US11798763B2

公开(公告)日：2023-10-24

申请号：US17593617

申请日：2020-03-16

申请人： SUPERGRID INSTITUTE

发明人： Wolfgang Grieshaber ,  Yang Yang ,  Pierre Legendre

IPC分类号： H01H33/59 ,  H01H9/54 ,  H02H9/02

CPC分类号： H01H33/596 ,  H01H9/542 ,  H01H9/547 ,  H02H9/026 ,  H01H2009/544

摘要： A current cut-off device for high-voltage DC current includes: between a primary point and an intermediate point, a primary diversion member and, in parallel, a primary surge protector; a secondary mechanical switch between the intermediate point and the secondary point; a main resonator whose terminal is linked to the secondary point; a main oscillation switch; a main surge protector, in parallel with a main capacitance of the main resonator; wherein the main oscillation switch includes three terminals linked respectively to the primary point, to the intermediate point and to the other terminal of the main resonator; the changeover switch can switch at least between three direct, inverting and isolated states.

公开(公告)号：US11791617B2

公开(公告)日：2023-10-17

申请号：US17418428

申请日：2019-12-20

申请人： SUPERGRID INSTITUTE

发明人： Yang Yang

IPC分类号： H02H9/04 ,  H02H3/20 ,  H02H9/00

CPC分类号： H02H3/202 ,  H02H9/005 ,  H02H9/04

摘要： A high-voltage direct current cut-off device, includes: a primary mechanical switch and a secondary mechanical switch placed successively between a primary point and a secondary point but either side of an intermediate point, a primary surge arrester arranged parallel with the primary switch, a secondary surge arrester arranged electrically parallel with the secondary switch. The secondary surge arrester is arranged electrically between the intermediate point and the secondary point, and in that the device comprises a capacitive buffer circuit electrically in parallel with the assembly formed by the primary switch and the secondary switch, and electrically in parallel with the assembly formed by the primary surge arrester and the secondary surge arrester, wherein the capacitive buffer circuit comprises an activation switch and a buffer capacitance.