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    Status indicator for power generation systems
    12.
    发明授权
    Status indicator for power generation systems 有权

    公开(公告)号：US10128661B2

    公开(公告)日：2018-11-13

    申请号：US15089431

    申请日：2016-04-01

    Applicant: SolarCity Corporation

    Inventor： Alex Mayer ,  Sandeep Narla

    IPC: G06F1/28 ,  H02J3/38 ,  H02M3/04 ,  H02M7/44 ,  H02M1/10 ,  G01R19/165 ,  H02M1/00

    Abstract: An indicator device includes a housing configured to be coupled to positive and negative DC wire lines that supply power from an energy generation source to an inverter. The indicator device further includes a current sensor for measuring a current level on the positive and negative DC wire lines, and voltage sensors for measuring a first voltage across the positive and negative DC wire lines, a second voltage across the positive DC wire line and a ground terminal, and a third voltage across the negative DC wireline and the ground terminal. A circuit block compares the measured current level to one or more threshold current levels, and further compares the measured first, second and third voltages to one or more threshold voltage levels, and in response provides an output signal. A visual indicator receives the output signal from the circuit block, and in response provides a visual indication of whether voltage and current levels on the positive and negative DC wire lines are at levels that may harm humans.

    STATE OF HEALTH MECHANISMS FOR ENERGY GENERATION SYSTEMS
    13.
    发明申请
    STATE OF HEALTH MECHANISMS FOR ENERGY GENERATION SYSTEMS 审中-公开

    公开(公告)号：US20180269829A1

    公开(公告)日：2018-09-20

    申请号：US15461295

    申请日：2017-03-16

    Applicant: SolarCity Corporation

    Inventor： Sandeep Narla

    IPC: H02S50/10

    CPC classification number: H02S50/10 ,  H02S50/00

    Abstract: A method of monitoring state of health for an energy generation system includes receiving a measurement of a parameter of an electrical component in the PV energy generation system at an instance in time, referencing a look-up table containing several values of the parameter representing an expected degradation trend across a progression of time for the electrical component, comparing the measurement to an expected value of the expected degradation trend for a period of time corresponding to the instance in time, and initiating a preventative measure based upon the comparison between the measurement and the expected value of the expected degradation trend.

    MICRO-BATTERIES FOR ENERGY GENERATION SYSTEMS
    15.
    发明申请
    MICRO-BATTERIES FOR ENERGY GENERATION SYSTEMS 审中-公开

    公开(公告)号：US20180123348A1

    公开(公告)日：2018-05-03

    申请号：US15341984

    申请日：2016-11-02

    Applicant: SolarCity Corporation

    Inventor： Sandeep Narla

    IPC: H02J3/38 ,  H02S40/38 ,  H02S40/32 ,  H02J3/46

    Abstract: Embodiments disclose an energy generation system including a photovoltaic (PV) array including a plurality of PV modules for generating direct current (DC) power, a plurality of power converter pairs coupled to the plurality of PV modules and configured to convert the generated DC power to alternating current (AC) power, and a plurality of battery packs coupled to the plurality of power converter pairs. Each power converter pair of the plurality of power converter pairs includes a DC-to-DC converter coupled to a DC-to-AC inverter, where the DC-to-DC converter is directly coupled to a respective PV module. Furthermore, each battery pack is directly coupled to a respective DC-to-DC converter and configured to store DC power from the respective PV module and output stored DC power to the respective power converter pair.

    HIGH EFFICIENCY HIGH VOLTAGE BATTERY PACK FOR ONSITE POWER GENERATION SYSTEMS
    17.
    发明申请
    HIGH EFFICIENCY HIGH VOLTAGE BATTERY PACK FOR ONSITE POWER GENERATION SYSTEMS 有权
    高效率高压电池组，用于现场发电系统

    公开(公告)号：US20170062876A1

    公开(公告)日：2017-03-02

    申请号：US14931648

    申请日：2015-11-03

    Applicant: SOLARCITY CORPORATION

    Inventor： Sandeep Narla

    IPC: H01M10/42 ,  H01M2/34 ,  H02H3/08 ,  H02H3/087

    CPC classification number: H01M10/425 ,  B60L3/0046 ,  H01M2/34 ,  H01M2010/4271 ,  H01M2220/10 ,  H02H3/08 ,  H02H3/087 ,  H02J7/0031 ,  H02J7/35 ,  Y02T10/7005

    Abstract: A high-voltage battery pack for an onsite power generation system includes battery modules configured to provide a voltage of at least 170V. High-speed switches and a high-speed current detection circuit are serially coupled between the battery modules and the positive and negative output terminals of the battery pack. A control circuit is operatively coupled to the current detection circuit so that when the current detection circuit detects a fault condition, the control circuit opens one or more of the switches to thereby electrically isolate the battery modules from the positive and negative output terminals of the battery pack. The battery pack is configured so that the at least 170V provided by the battery modules can be provided to an AC stage of the onsite power generation system without an intervening DC/DC converter and/or a transformer.

    Abstract translation: 用于现场发电系统的高压电池组包括被配置为提供至少170V的电压的电池模块。 高速开关和高速电流检测电路串联在电池模块与电池组的正和负输出端子之间。 控制电路可操作地耦合到电流检测电路，使得当电流检测电路检测到故障状况时，控制电路打开一个或多个开关，从而将电池模块与电池的正和负输出端电隔离 包。 电池组被配置为使得由电池模块提供的至少170V可以被提供给现场发电系统的AC级，而没有中间的DC / DC转换器和/或变压器。

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