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1808 条记录 (耗时 0.024 秒)

    Common mode current feed fault protection
    1.
    发明授权
    Common mode current feed fault protection 有权

    公开(公告)号：US12123905B2

    公开(公告)日：2024-10-22

    申请号：US17836225

    申请日：2022-06-09

    申请人： Hamilton Sundstrand Corporation

    发明人： Kyle Stephen Ives ,  Tom A. Utecht ,  Michael C. Harke

    IPC分类号： G01R31/08 ,  G05F1/66 ,  H02J3/46 ,  H02M5/458

    CPC分类号： G01R31/085 ,  G05F1/66 ,  H02J3/46 ,  H02M5/4585 ,  H02J2310/44

    摘要： A system includes a generator. Three AC feeders are connected for feeding AC output from the generator. A rectifier is electrically connected to the three AC feeders and to a load via a first DC feeder and a second DC feeder. A first resistor connects between a the first DC feeder and ground. A second resistor connects between the second DC feeder and ground. At least one of a first current sensor is operatively connected to detect current in the first DC feeder and/or a second current sensor is operatively connected to detect current in the second DC feeder. A controller is configured to monitor for changes in common mode current based on the input from the at least one current sensor, and to determine presence of a fault if change in the common mode current exceeds a predetermined threshold.

    METHOD FOR CONTROLLING ELECTRICAL NETWORK VARIABLES IN A FEED NETWORK
    3.
    发明公开
    METHOD FOR CONTROLLING ELECTRICAL NETWORK VARIABLES IN A FEED NETWORK 审中-公开

    公开(公告)号：US20240322573A1

    公开(公告)日：2024-09-26

    申请号：US18578940

    申请日：2022-07-12

    申请人： Fronius International GmbH

    发明人： Daniel BARTEL ,  Richard GRASBÖCK ,  Harald KREUZER ,  Roland PIELER

    IPC分类号： H02J3/46

    CPC分类号： H02J3/46

    摘要： A method which is improved relative to the prior art for controlling electrical network variables in a feed network, in which the correlation between at least one feed variable measured at an input of the feed network and at least one network variable measured at an output of the feed network is described in a model-like manner using a model of the feed network. In the event of an incorrect description of the correlation, an adaptation of the model of the feed network is carried out, a feed variable target value for the at least one feed variable is determined from a predefined network variable target value for the at least one network variable using the model of the feed network, and the at least one feed variable is set to the determined feed variable target value by a current converter.

    DISTRIBUTED MULTI-MODAL POWER MAXIMIZING INTEGRATED CIRCUIT FOR SOLAR PHOTOVOLTAIC MODULES
    4.
    发明公开
    DISTRIBUTED MULTI-MODAL POWER MAXIMIZING INTEGRATED CIRCUIT FOR SOLAR PHOTOVOLTAIC MODULES 审中-公开

    公开(公告)号：US20240275174A1

    公开(公告)日：2024-08-15

    申请号：US18408483

    申请日：2024-01-09

    申请人： Sigmagen, Inc.

    发明人： Mehrdad M. Moslehi

    IPC分类号： H02J3/38 ,  H01L31/05 ,  H02J3/46 ,  H02S40/30 ,  H02S50/10

    CPC分类号： H02J3/381 ,  H01L31/0504 ,  H02J3/46 ,  H02S40/30 ,  H02S50/10 ,  H02J2300/26

    摘要： Disclosed herein is add-on electronic circuit structures and methods for providing protection against reverse-electrical-current failures and for enabling comprehensive electrical (current-voltage sweep) and electro-optical (electroluminescence or EL using reserve current flow) testing of solar photovoltaic cells and modules having at least one multi-modal maximum-power-point tracking (MPPT) power optimizer integrated circuit chip to increase electrical energy generation yield of the modules. Such multi-modal MPPT power optimizer chips are used for distributed solar electric power generation enhancement in solar photovoltaic cells, modules, and systems under realistic operating conditions with non-ideal manufacturing and environmental variations (e.g., variable and/or non-uniform sunlight or daylight, mismatched cells, etc.).

    Frequency regulation method using fast frequency reserve
    5.
    发明授权
    Frequency regulation method using fast frequency reserve 有权

    公开(公告)号：US12057704B1

    公开(公告)日：2024-08-06

    申请号：US18409349

    申请日：2024-01-10

    申请人： NORTH CHINA ELECTRIC POWER UNIVERSITY

    发明人： Cheng Wang ,  Tianshu Bi ,  Guoyi Xu ,  Rui Zhang

    IPC分类号： H02J3/46

    CPC分类号： H02J3/46 ,  H02J2203/20

    摘要： In this disclosure, the energy management problem of the D-LEGS with FFR is analyzed, so as to enhance the frequency stability of the main grid. The post-disturbance frequency response behaviors of both the main grid and the D-IEGS are precisely depicted, where the dead zones, limiting ranges and time constant of the governors are considered. The frequency regulation units of the D-IEGS include GTs and P2G units, whose impacts of providing frequency regulation service on the gas networks are quantified. Considering the time-scale similarity of the frequency dynamics and the dynamics of the GDN, the gas flow dynamics model is adopted. The frequency response dynamics of the GTs and P2G units, and the gas flow dynamics of the GDN, a variable-step difference scheme and a binary variable reduction method are devised.

    Power System and Control Method for Power System
    8.
    发明公开
    Power System and Control Method for Power System 审中-公开

    公开(公告)号：US20240250535A1

    公开(公告)日：2024-07-25

    申请号：US18585771

    申请日：2024-02-23

    申请人： Huawei Digital Power Technologies Co., Ltd.

    发明人： Liuliu Huang ,  Lin Li

    IPC分类号： H02J3/32 ,  H02J3/46

    CPC分类号： H02J3/32 ,  H02J3/46 ,  H02J2300/24

    摘要： N direct current coupling units are configured to provide electric energy to a load. Each of the N direct current coupling units includes an energy storage unit. The energy storage unit is configured to store electric energy or supply power to the load. Herein, N is a positive integer. A primary controller is configured to determine an expected discharge power value of energy storage units in the N direct current coupling units, where the expected discharge power value is a power value that indicates power that needs to be discharged by the energy storage units in the N direct current coupling units, and determine actual discharge power of the energy storage unit in each direct current coupling unit based on the expected discharge power value and first characteristic information of the energy storage unit in the direct current coupling unit.