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    POWER SYSTEM AND METHOD OF STARTING MULTIPLE POWER CONVERTERS IN GRID FORMING MODE
    11.
    发明申请
    POWER SYSTEM AND METHOD OF STARTING MULTIPLE POWER CONVERTERS IN GRID FORMING MODE 审中-公开

    公开(公告)号：US20180131268A1

    公开(公告)日：2018-05-10

    申请号：US15786996

    申请日：2017-10-18

    Applicant: DYNAPOWER COMPANY LLC

    Inventor： Apurva SOMANI

    IPC: H02M1/36 ,  H02J3/38

    CPC classification number: H02M1/36 ,  G05B15/02 ,  H02J3/38 ,  H02J3/381 ,  H02J13/0006 ,  H02J2003/388 ,  Y02P80/14

    Abstract: A power system and method for performing a blackstart on a microgrid. The power system includes at least a first power converter and a second power converter. The first power converter comprises a first controller having a plurality of startup sequences for performing the blackstart. The second power converter is electrically coupled to the first power converter at a point of common coupling. During the blackstart, the first controller is configured to select and perform one of the plurality of startup sequences according to a point at which the second power converter is within the second power converter's startup sequence during the blackstart. The first controller selects the one of the plurality of startup sequences according to a microgrid voltage at the point of common coupling.

    ISLANDING A PLURALITY OF GRID TIED POWER CONVERTERS
    12.
    发明申请
    ISLANDING A PLURALITY OF GRID TIED POWER CONVERTERS 审中-公开

    公开(公告)号：US20180048158A1

    公开(公告)日：2018-02-15

    申请号：US15790549

    申请日：2017-10-23

    Applicant: DYNAPOWER COMPANY LLC

    Inventor： Apurva SOMANI ,  John C. PALOMBINI

    IPC: H02J3/38

    CPC classification number: H02J3/381 ,  H02J2003/388 ,  Y02P80/14 ,  Y02P80/152

    Abstract: A power system having a plurality of power converters coupled together at a point of common coupling (PCC). The power converters are coupled to a load and provide a combined power converter output to the load. A switch is coupled in series between the PCC and an external grid. When the switch is closed, the power system is in a grid-tied configuration and when the switch is open, the power system is in a microgrid configuration. A control system coupled to the power converters enables the switch to open and close in response to a signal received from one or more sensors monitoring the external grid, enables the power converters to operate in a current control mode when the switch is closed, and transitions the power converters from grid-tied mode to microgrid mode and synchronize the power converters such that the converters share the load.

    DC/DC converter and control thereof
    15.
    发明授权
    DC/DC converter and control thereof 有权

    公开(公告)号：US10749435B2

    公开(公告)日：2020-08-18

    申请号：US15895565

    申请日：2018-02-13

    Applicant: DYNAPOWER COMPANY LLC

    Inventor： Apurva Somani ,  Xiaorong Xia ,  Anup Thapa ,  Gysler Castelino

    IPC: H02M3/158 ,  H02J7/35 ,  H02M3/335 ,  H02J7/00 ,  H02M1/08 ,  G05B19/05 ,  H02M1/14 ,  H02M1/00

    Abstract: A DC/DC converter system includes a bidirectional DC/DC converter converting between voltage levels at first and second ports and a control system for controlling the DC/DC converter. The bidirectional DC/DC converter includes a first conversion stage connected to the first port and a second conversion stage interfaced with the first conversion stage and connected to the second port. The control system includes outer and inner control loops. The outer control loop compares a command for one of a voltage level, a current level or power at one of the first and second ports to an actual value of voltage level, current level or power level and outputs an interface current command based on the comparison. The inner control loop compares the interface current command to an actual interface current at an interface of the first and second conversion stages, and controls a switching signal duty value based on the comparison.

    Islanding a plurality of grid tied power converters
    16.
    发明授权
    Islanding a plurality of grid tied power converters 有权

    公开(公告)号：US10374429B2

    公开(公告)日：2019-08-06

    申请号：US15790549

    申请日：2017-10-23

    Applicant: DYNAPOWER COMPANY LLC

    Inventor： Apurva Somani ,  John C. Palombini

    IPC: H02J3/38

    Abstract: A power system having a plurality of power converters coupled together at a point of common coupling (PCC). The power converters are coupled to a load and provide a combined power converter output to the load. A switch is coupled in series between the PCC and an external grid. When the switch is closed, the power system is in a grid-tied configuration and when the switch is open, the power system is in a microgrid configuration. A control system coupled to the power converters enables the switch to open and close in response to a signal received from one or more sensors monitoring the external grid, enables the power converters to operate in a current control mode when the switch is closed, and transitions the power converters from grid-tied mode to microgrid mode and synchronize the power converters such that the converters share the load.

    METHOD AND SYSTEM FOR EXTRACTING EXCESS POWER
    17.
    发明申请
    METHOD AND SYSTEM FOR EXTRACTING EXCESS POWER 审中-公开

    公开(公告)号：US20180329382A1

    公开(公告)日：2018-11-15

    申请号：US15980224

    申请日：2018-05-15

    Applicant: DYNAPOWER COMPANY LLC

    Inventor： Apurva SOMANI ,  Xiaorong XIA ,  Gysler CASTELINO ,  Anup THAPA

    IPC: G05B19/042

    CPC classification number: G05B19/042 ,  G05B2219/2639 ,  H02J3/32 ,  H02J3/383 ,  H02J3/385 ,  H02J7/35

    Abstract: A power system for connecting a power source, an energy storage unit and a grid includes a power inverter, an energy storage power converter and a controller. The power inverter is electrically coupled to the power source through a DC bus and converts DC power from the DC bus to AC power output to the grid. The power converter is electrically coupled between the DC bus and the energy storage unit and stores power in the energy storage unit and discharges power from the energy storage unit. The controller controls the power converter to store excess power from the power source that cannot be output to the grid in the energy storage unit, and control the energy storage power converter to discharge power stored in the energy storage unit to the power inverter to output to the grid.

    POWER SYSTEM AND METHOD OF STARTING MULTIPLE POWER CONVERTERS IN GRID FORMING MODE
    18.
    发明申请
    POWER SYSTEM AND METHOD OF STARTING MULTIPLE POWER CONVERTERS IN GRID FORMING MODE 审中-公开

    公开(公告)号：US20180109111A1

    公开(公告)日：2018-04-19

    申请号：US15803087

    申请日：2017-11-03

    Applicant: DYNAPOWER COMPANY LLC

    Inventor： Apurva SOMANI

    IPC: H02J3/38 ,  H02M1/36 ,  H02J13/00 ,  G05B15/02

    CPC classification number: H02M1/36 ,  G05B15/02 ,  H02J3/38 ,  H02J3/381 ,  H02J13/0006 ,  H02J2003/388 ,  Y02P80/14

    Abstract: A power system and method for performing a blackstart on a microgrid. The power system includes at least a first power converter and a second power converter. The first power converter comprises a first controller having a plurality of startup sequences for performing the blackstart. The second power converter is electrically coupled to the first power converter at a point of common coupling. During the blackstart, the first controller is configured to select and perform one of the plurality of startup sequences according to a point at which the second power converter is within the second power converter's startup sequence during the blackstart. The first controller selects the one of the plurality of startup sequences according to a microgrid voltage at the point of common coupling.

    POWER CONVERTER SYSTEM HAVING ACTIVE STANDBY MODE AND METHOD OF CONTROLLING THE SAME
    20.
    发明申请
    POWER CONVERTER SYSTEM HAVING ACTIVE STANDBY MODE AND METHOD OF CONTROLLING THE SAME 有权
    具有有源待机模式的电力转换器系统及其控制方法

    公开(公告)号：US20170005564A1

    公开(公告)日：2017-01-05

    申请号：US15197007

    申请日：2016-06-29

    Applicant: DYNAPOWER COMPANY LLC

    Inventor： Apurva SOMANI ,  John C. PALOMBINI

    IPC: H02M1/088 ,  H02M7/539 ,  H02J3/38

    CPC classification number: H02M1/088 ,  H02J3/08 ,  H02J3/32 ,  H02J3/38 ,  H02J3/381 ,  H02J3/40 ,  H02J9/005 ,  H02J2003/388 ,  H02M1/36 ,  H02M3/00 ,  H02M5/4585 ,  H02M7/00 ,  H02M7/539 ,  H02M7/797 ,  H02M2001/0032 ,  Y02B70/1441 ,  Y02B70/145 ,  Y02B70/16 ,  Y02P80/14

    Abstract: A power system having a plurality of operating modes including an active mode and an active standby mode includes a power converter and a controller the power converter is configured to adapt a power supply to a desired output, and the power converter includes a plurality of semiconductor switches that receive a gating signal when the power system is in the active mode such that the power converter is in a gating state. The controller controls the power converter in the active mode and the active standby mode, and the controller is configured to: while the power converter is synchronized to the grid, determine whether the power system should enter into the active standby mode in which the power converter is in a non-gating state; when it is determined the power system should enter into the active standby mode, control the power converter to be in a non-gating state such that the power system is in the active standby mode.

    Abstract translation: 具有主动模式和主动待机模式的多种操作模式的电力系统包括功率转换器和控制器，所述功率转换器被配置为使电源适配于期望的输出，并且所述功率转换器包括多个半导体开关 当电力系统处于活动模式时，其接收选通信号，使得功率转换器处于选通状态。 控制器控制电源转换器处于主动模式和主动待机模式，控制器配置为：电源转换器与电网同步时，确定电源系统是否应进入主动待机模式，在此模式下，电源转换器 处于非门控状态; 当确定电源系统进入主动待机模式时，控制电源转换器处于非门控状态，使电源系统处于主动待机状态。

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