公开(公告)号：EP4432537A1

公开(公告)日：2024-09-18

申请号：EP23161480.1

申请日：2023-03-13

Applicant: Hitachi Energy Ltd

Inventor： Asoodar, Mohsen

IPC: H02M1/34

CPC classification number: H02M1/348 ,  H02M1/344 ,  H02M1/088

Abstract: An apparatus (100) is provided, comprising a plurality of interconnected switching devices (1, 2) at least two of which are connected in series so as to form at least one series-connection of switching devices, and a plurality of switching device voltage balancing circuits, VBCs, (3, 4) each of which corresponds to and is connected to a respective switching device (1, 2) of the at least one series-connection of switching devices (1, 2), for limiting the maximum voltage that each switching device (1, 2) of the at least one series-connection of switching devices (1, 2) is subjected to. Each of the plurality of switching device VBCs (3, 4) comprises an electrical energy storage, EES, module (6, 7), and a resistive current path (8, 9) comprising at least one resistor (10, 11), and at least one EES module voltage regulating circuitry, VRC, (12, 13) connected or connectable to the EES module (6, 7), wherein the at least one EES module VRC (12, 13) is configured such that it conducts current therethrough in a direction towards the at least one resistor (10, 11) when the voltage over the at least one EES module VRC (12, 13) is within a predefined threshold voltage range.

公开(公告)号：EP3905506B1

公开(公告)日：2024-09-11

申请号：EP19903540.3

申请日：2019-12-13

IPC: H02M7/483 ,  H02M7/49 ,  H02M1/00 ,  H02M1/34 ,  H02M7/487

CPC classification number: H02M7/483 ,  H02M1/0054 ,  H02M1/0095 ,  H02M1/34 ,  H02M1/346 ,  H02M1/348 ,  H02M7/4833 ,  H02M7/4835 ,  H02M7/4837 ,  H02M7/487 ,  H02M7/49 ,  Y02B70/10

公开(公告)号：EP3958455B1

公开(公告)日：2024-09-25

申请号：EP20813181.3

申请日：2020-05-25

IPC: H02M1/34 ,  H02M1/44 ,  H02M7/5387 ,  H02M1/38

CPC classification number: Y02E10/56 ,  H02M7/5387 ,  H02M1/346 ,  H02M1/348 ,  H02M1/38 ,  H02M1/44 ,  Y02B70/10

公开(公告)号：EP4383540A1

公开(公告)日：2024-06-12

申请号：EP23215000.3

申请日：2023-12-07

Applicant: Self Electronics Co., Ltd. ,  SELF ELECTRONICS Germany GmbH ,  Lin, Wanjiong

Inventor： Wang, Linji ,  Fang, Junqi ,  Dong, Jianguo

IPC: H02M1/42 ,  H02M1/32 ,  H02M1/34 ,  H02H9/04

CPC classification number: Y02B70/10 ,  H05B47/24 ,  H02M1/32 ,  H02M1/322 ,  H02M1/4266 ,  H02M1/4208 ,  H02M1/348 ,  H02H9/04

Abstract: The invention provides a surge suppression circuit, the input end of the surge suppression circuit is connected with a rectifying circuit, the output end of the surge suppression circuit is connected with a load, and the surge suppression circuit comprises a first transient suppression diode, a second transient suppression diode, a third diode, a first capacitor and a second capacitor, the second transient suppression diode and the second capacitor are connected in series; the positive output end of the rectifying circuit is connected with the negative electrode of the first transient voltage suppressor and the second capacitor, and the negative output end of the rectifying circuit is connected with the positive electrode of the second transient voltage suppressor and the first capacitor; the negative electrode of the third diode is connected with the node of the first transient voltage suppressor and the first capacitor, and the positive electrode of the third diode is connected with the node of the second transient voltage suppressor and the second capacitor. According to the invention, the valley filling function and the anti-surge function are integrated, the performance of the power supply is improved, and the miniaturization of the power supply is facilitated.