公开(公告)号：US12113353B2

公开(公告)日：2024-10-08

申请号：US18142883

申请日：2023-05-03

申请人： Maxim Integrated Products, Inc.

发明人： Anurag Veerabathini ,  Punith Kumar Reddy Surkanti ,  Jan F. Swidzinski ,  Kevin John Schemansky

IPC分类号： H02H7/22 ,  G01R19/165 ,  G01R31/12 ,  H02H1/00

CPC分类号： H02H7/228 ,  G01R19/16576 ,  G01R31/1263 ,  H02H1/0007

摘要： Described are system and method embodiments for establishing a weak ground path, comprising: disabling a first ground path for a shield pin of a cable connection interface, the first ground path including a first switch; enabling a second ground path for the shield pin, the second ground path comprises a second switch, and the second ground path having a higher resistance than the first ground path; determining a connection of a device to the cable connection interface with the second ground path; and enabling the first ground path based on the connection of the device being determined.

公开(公告)号：US20240302423A1

公开(公告)日：2024-09-12

申请号：US18597244

申请日：2024-03-06

申请人： Siemens Energy Global GmbH & Co. KG

发明人： Johannes Raith ,  Mario Scala

IPC分类号： G01R31/12 ,  G01R31/62

CPC分类号： G01R31/12 ,  G01R31/62

摘要： A method for assessing the aging or monitoring the status of an electrical device that has a solid insulation arrangement and a liquid and/or gaseous insulating medium in contact with the solid insulation arrangement. In a first step S1, a thermo-hydraulic aging model is provided and a simulation for the electrical device is carried out. S2) local temperatures are calculated for various areas of the electrical device in the scope of the simulation; and S3) amounts of at least one aging product, which arises due to the aging of the solid insulation arrangement and passes into the insulating medium, are calculated for the various areas. There is also provided a corresponding computer program and a computer-readable medium.

公开(公告)号：US12078669B2

公开(公告)日：2024-09-03

申请号：US18345009

申请日：2023-06-30

申请人： ABB Schweiz AG

发明人： Kai Hencken ,  Holger Kaul ,  Jörg Gebhardt ,  Yannick Maret ,  Andrej Krivda

IPC分类号： G01R31/327 ,  G01R31/12 ,  G01S11/16

CPC分类号： G01R31/1209 ,  G01R31/3271 ,  G01S11/16

摘要： A detection system for detecting an electrical discharge in an electrical apparatus includes a first sensing device that senses an acoustic wave and an electromagnetic wave and generates a first combined signal. A signal processing device processes the first combined signal and determines the occurrence and properties of an electrical discharge.

公开(公告)号：US20240288512A1

公开(公告)日：2024-08-29

申请号：US18572335

申请日：2022-04-07

申请人： Hitachi Industrial Equipment Systems Co., Ltd.

发明人： Takuya IWASAKI ,  Haruki MINAGAWA ,  Akira YAMAGISHI ,  Ryosuke SUGITA

IPC分类号： G01R31/62 ,  G01R31/12 ,  H01F27/32 ,  H01F27/40

CPC分类号： G01R31/62 ,  G01R31/1263 ,  H01F27/324 ,  H01F27/402 ,  H01F2027/404

摘要： A transformer diagnostic system having an insulating oil and a winding comprising a detection part detects a temperature at the top and bottom of the insulating oil and hydrogen, an arithmetic unit determines abnormality based on the detected values from the detection part.

公开(公告)号：US20240241168A1

公开(公告)日：2024-07-18

申请号：US17928288

申请日：2022-08-09

申请人： Electric Power Science & Research Institute of State Grid Tianjin Electric Power Company ,  State Grid Tianjin Electric Power Company

发明人： Shengchen Fang ,  Yang Yu ,  Weibo Li ,  Pengxian Song ,  Chun He ,  Chi Zhang ,  Qinghua Tang ,  Longji Li ,  Chunhui Zhang ,  Songyuan Li ,  Fei Lu ,  Lin Li ,  Lei Yang ,  Xiaoguang Wang ,  Xuliang Zhu ,  Minghui Duan ,  Haoming Wang ,  Wei Fan

IPC分类号： G01R31/14 ,  G01R31/12

CPC分类号： G01R31/14 ,  G01R31/1245

摘要： The present disclosure provides a defect detection method and apparatus for a cushion layer of a cable, a device, and a storage medium. The method includes: obtaining specification parameters of a corrugated sheath of a to-be-detected cable, calculating a first volume of a cushion layer without deformation and a second volume of a deformed portion of the cushion layer when the cushion layer is deformed under stress, and calculating a stressed-state deformation ratio of the cushion layer based on the first volume and the second volume; obtaining a voltage, a current, an electrode area, an electrode distance, and an initial electrode distance of the cushion layer when the stressed-state deformation ratio is reached, and calculating volume resistivity of the cushion layer; and comparing the volume resistivity with a preset evaluation parameter to obtain a defect detection result of the cushion layer.

公开(公告)号：US20240230746A1

公开(公告)日：2024-07-11

申请号：US18493820

申请日：2023-10-25

申请人： Delta Electronics (Shanghai) Co.,Ltd.

发明人： Dehui ZHANG ,  Teng LIU

IPC分类号： G01R31/12 ,  G01R31/62

CPC分类号： G01R31/1272 ,  G01R31/62

摘要： The application discloses an insulation detection method and apparatus for a conversion system, the conversion system including: a converter module including n conversion units, where n≥1, each of the n conversion units including a transformer including a primary winding and a secondary winding; and a connection element connected between the primary winding and the secondary winding of the transformer; the insulation detection method including: controlling at least one switch of the converter module to turn on;
detecting signals that reflect a current flowing through the connection element; and processing the signal and outputting insulation information, wherein the insulation information represents an insulation state of the conversion system.

公开(公告)号：US12003215B2

公开(公告)日：2024-06-04

申请号：US17732772

申请日：2022-04-29

申请人： Solaredge Technologies Ltd.

发明人： Ilan Yoscovich ,  Guy Sella ,  Meir Gazit ,  Yoav Galin ,  David Braginsky ,  Lior Handelsman ,  Meir Adest

IPC分类号： H02S50/00 ,  G01R31/12 ,  H01L31/02 ,  H02H1/00 ,  H02H7/20

CPC分类号： H02S50/00 ,  G01R31/1227 ,  H01L31/02021 ,  H02H1/0015 ,  H02H7/20 ,  Y02E10/50

摘要： A method for arc detection in a system including a photovoltaic panel and a load connectible to the photovoltaic panel with a DC power line. The method measures power delivered to the load thereby producing a first measurement result of the power delivered to the load. Power produced by the photovoltaic panel is also measured, thereby producing a second measurement result of power produced by the photovoltaic panel. The first measurement result is compared with the second measurement result thereby producing a differential power measurement result. Upon the differential power measurement result being more than a threshold value, an alarm condition may also be set. The second measurement result may be modulated and transmitted over the DC power line.

公开(公告)号：US11967869B2

公开(公告)日：2024-04-23

申请号：US16646809

申请日：2018-09-21

申请人： Innomotics GmbH

发明人： Janis Heller ,  Tobias Katzenberger ,  Marek Maleika ,  Bastian Plochmann

IPC分类号： H02K15/12 ,  C09B21/00 ,  C09D7/62 ,  G01R13/12 ,  G01R31/12 ,  G01R31/34 ,  H01B3/40 ,  H02K3/40 ,  C09B69/00

CPC分类号： H02K15/125 ,  C09B21/00 ,  C09D7/62 ,  G01R13/12 ,  G01R31/1218 ,  G01R31/343 ,  H01B3/40 ,  H02K3/40 ,  C09B69/00

摘要： Various embodiments include a passive component comprising: a substrate; and two conductor tracks disposed on the substrate. The substrate forms an electrically insulating bridge between at least two phases of an electrically rotating machine. Each of the two conductor tracks is coupled to a separate phase of the at least two phases so an electrical potential across the electrically insulating bridge is the same as in the insulation system of the machine and the potential load on the passive component corresponds to the potential load on the insulation system.

公开(公告)号：US20240079868A1

公开(公告)日：2024-03-07

申请号：US18201182

申请日：2023-09-14

申请人： Plamen Doynov

发明人： Plamen Doynov

IPC分类号： H02H9/04 ,  G01R31/12 ,  G01R31/327 ,  H02H5/00

CPC分类号： H02H9/045 ,  G01R31/12 ,  G01R31/327 ,  H02H5/00 ,  H02H5/005 ,  H02H9/04 ,  H02H3/08

摘要： A method and system for suppressing EMP-induced voltage surges due to transient electromagnetic energy disturbance such as a detonation of a nuclear weapon at high altitude generating an EMP (HEMP) comprising E1, E2, and E3 component pulses. Surge protection assemblies are mounted inline, intermediate AC and DC distribution power lines and a plurality of electrical and electronic devices, powered by the lines. The inline mounting of the reconfigurable surge suppression system eliminates any time delay response of the plurality of protecting assemblies and the allowable voltage amplitude level of the protecting assemblies are selected and combined to achieve a predefined desired response time and protection level capacity to react to and mitigate the E1, E2, and E3 components of a complex multi-pulse EMP pulse generated by detonation of a nuclear weapon at high altitude (HEMP). The reconfigurable surge suppressing systems is interoperable with plurality of electrical interfaces.

公开(公告)号：US11921167B2

公开(公告)日：2024-03-05

申请号：US17752178

申请日：2022-05-24

申请人： Yazaki Corporation

发明人： Yasuyuki Mochizuki ,  Norio Sudo ,  Ryosuke Arigaya

IPC分类号： G01R31/52 ,  G01R27/26 ,  G01R31/12

CPC分类号： G01R31/52 ,  G01R27/2605 ,  G01R31/12

摘要： An earth fault detection apparatus includes a switch group configured to switch between a first measurement path including a battery and a capacitor, a second measurement path including the battery, a negative-side insulation resistance, and the capacitor, a third measurement path including the battery, a positive-side insulation resistance, and the capacitor; and a control unit configured to calculate a reference value, based on each charging voltage of the capacitor in each measurement path, and configured to calculate an insulation resistance with reference to a predetermined conversion map, in which the conversion map includes a conversion map corresponding to a capacitance of the capacitor, and the control unit estimates the capacitance of the capacitor, and refers to the conversion map corresponding to the capacitance of the capacitor that has been estimated.