公开(公告)号：US20140301120A1

公开(公告)日：2014-10-09

申请号：US14354285

申请日：2011-10-28

申请人： Huibin Zhu ,  David Smith ,  Jun Zhu ,  Xueqin Wu

发明人： Huibin Zhu ,  David Smith ,  Jun Zhu ,  Xueqin Wu

IPC分类号： H02M1/36 ,  H02H7/12 ,  H02J3/38

CPC分类号： H02M1/36 ,  H02H3/066 ,  H02H7/06 ,  H02H7/12 ,  H02J3/38 ,  H02J3/383 ,  H02J3/40 ,  Y02E10/563

摘要： Systems, power modules (108), and methods (200) for using in controlling a converter (110) coupled between a power generator (104) and an electric grid (102) are provided. One of the power modules (108) includes the converter (110) configured to supply an output from the power generator (104) to the electric grid (102), and a controller (112) coupled to the converter (110). The controller (112) includes a phase-lock-loop (PLL) module (123) and at least one regulator (128, 130). The at least one regulator (128, 130) is configured to at least partially control the converter (110) as a function of at least one parameter. The controller (112) is configured to disable the converter (110) in response to a grid fault event, to maintain coupling between the power generator (104) and the converter (110) during the grid fault event, to determine whether the PLL module (123) is locked onto a voltage associated with the electric grid, to adjust the at least one parameter after the grid fault event, and to re-enable the converter to supply the output from the power generator (104) to the electric grid (102).

摘要翻译： 提供了用于控制耦合在发电机（104）和电网（102）之间的转换器（110）的系统，功率模块（108）和方法（200）。 功率模块（108）中的一个包括被配置为将功率发生器（104）的输出提供给电网（102）的转换器（110）和耦合到转换器（110）的控制器（112）。 控制器（112）包括锁相环（PLL）模块（123）和至少一个调节器（128,130）。 至少一个调节器（128,130）被配置为至少部分地根据至少一个参数来控制转换器（110）。 控制器（112）被配置为响应于电网故障事件禁用转换器（110），以在电网故障事件期间保持发电机（104）和转换器（110）之间的耦合，以确定PLL模块 （123）被锁定在与所述电网相关联的电压上，以在所述电网故障事件之后调整所述至少一个参数，并且重新使得所述转换器将所述发电机（104）的输出提供给所述电网（ 102）。

公开(公告)号：US09379602B2

公开(公告)日：2016-06-28

申请号：US14354285

申请日：2011-10-28

申请人： Huibin Zhu ,  David Smith ,  Jun Zhu ,  Xueqin Wu

发明人： Huibin Zhu ,  David Smith ,  Jun Zhu ,  Xueqin Wu

IPC分类号： H02M1/36 ,  H02H7/06 ,  H02J3/38 ,  H02J3/40 ,  H02H7/12 ,  H02H3/06

CPC分类号： H02M1/36 ,  H02H3/066 ,  H02H7/06 ,  H02H7/12 ,  H02J3/38 ,  H02J3/383 ,  H02J3/40 ,  Y02E10/563

摘要： Systems, power modules (108), and methods (200) for using in controlling a converter (110) coupled between a power generator (104) and an electric grid (102) are provided. One of the power modules (108) includes the converter (110) configured to supply an output from the power generator (104) to the electric grid (102), and a controller (112) coupled to the converter (110). The controller (112) includes a phase-lock-loop (PLL) module (123) and at least one regulator (128, 130). The at least one regulator (128, 130) is configured to at least partially control the converter (110) as a function of at least one parameter. The controller (112) is configured to disable the converter (110) in response to a grid fault event, to maintain coupling between the power generator (104) and the converter (110) during the grid fault event, to determine whether the PLL module (123) is locked onto a voltage associated with the electric grid, to adjust the at least one parameter after the grid fault event, and to re-enable the converter to supply the output from the power generator (104) to the electric grid (102).

摘要翻译： 提供了用于控制耦合在发电机（104）和电网（102）之间的转换器（110）的系统，功率模块（108）和方法（200）。 功率模块（108）中的一个包括被配置为将功率发生器（104）的输出提供给电网（102）的转换器（110）和耦合到转换器（110）的控制器（112）。 控制器（112）包括锁相环（PLL）模块（123）和至少一个调节器（128,130）。 至少一个调节器（128,130）被配置为至少部分地根据至少一个参数来控制转换器（110）。 控制器（112）被配置为响应于电网故障事件禁用转换器（110），以在电网故障事件期间保持发电机（104）和转换器（110）之间的耦合，以确定PLL模块 （123）被锁定在与所述电网相关联的电压上，以在所述电网故障事件之后调整所述至少一个参数，并且重新使得所述转换器将所述发电机（104）的输出提供给所述电网（ 102）。

公开(公告)号：US09509231B2

公开(公告)日：2016-11-29

申请号：US14396917

申请日：2012-04-26

申请人： Huibin Zhu ,  David Smith ,  David Scott Wilmer ,  Maozhong Gong ,  Jun Zhu ,  Xueqin Wu

发明人： Huibin Zhu ,  David Smith ,  David Scott Wilmer ,  Maozhong Gong ,  Jun Zhu ,  Xueqin Wu

IPC分类号： H02M7/537 ,  H02M1/36 ,  H02M5/458 ,  H02M1/32

CPC分类号： H02M7/537 ,  H02M1/32 ,  H02M1/36 ,  H02M5/4585 ,  H02M2001/322

摘要： A power converter system includes a converter configured to be coupled to a power generation unit for receiving current from the power generation unit. A bus is coupled to the converter, and energy is stored within the bus when the current is conducted through the power converter system. A damping circuit is configured to be coupled to the bus and to the power generation unit, and a control system is coupled to the converter and to the damping circuit. The control system is configured to selectively discharge at least a portion of the energy stored within the bus through the damping circuit when the control system determines that a predetermined condition is met.

摘要翻译： 电力转换器系统包括被配置为耦合到用于从发电单元接收电流的发电单元的转换器。 总线耦合到转换器，并且当电流通过功率转换器系统传导时，能量被存储在总线内。 阻尼电路被配置为耦合到总线和发电单元，并且控制系统耦合到转换器和阻尼电路。 控制系统配置成当控制系统确定满足预定条件时，通过阻尼电路选择性地排放存储在总线内的能量的至少一部分。

公开(公告)号：US20140056041A1

公开(公告)日：2014-02-27

申请号：US14113946

申请日：2011-05-18

申请人： Huibin Zhu ,  David Smith ,  Maozhong Gong ,  Jun Zhu ,  Allen Ritter ,  Robert Gregory Wagoner ,  Anthony Galbraith ,  Xueqin Wu ,  Qiwei Zhang

发明人： Huibin Zhu ,  David Smith ,  Maozhong Gong ,  Jun Zhu ,  Allen Ritter ,  Robert Gregory Wagoner ,  Anthony Galbraith ,  Xueqin Wu ,  Qiwei Zhang

IPC分类号： H02H7/12 ,  H02J5/00

CPC分类号： H02H7/1203 ,  H02M3/1584 ,  H02M7/53871 ,  H02M2001/0003 ,  H02M2001/007

摘要： A power converter system includes a converter configured to be coupled to a power generation unit for receiving power from the power generation unit, and a bus coupled to the converter, wherein a voltage is generated across the bus when electricity is conducted through the power converter system. The power converter system also includes an inverter coupled to the bus, wherein the inverter is configured to supply power to an electrical distribution network. A control system is coupled to at least one of the converter and the inverter, wherein the control system is configured to adjust an operation of the at least one of the converter and the inverter to reduce the voltage across the bus during at least one of a low voltage event and a high voltage event.

摘要翻译： 电力转换器系统包括被配置为耦合到用于从发电单元接收功率的发电单元的转换器和耦合到转换器的总线，其中当通过功率转换器系统进行通电时，总线上产生电压 。 功率转换器系统还包括耦合到总线的逆变器，其中逆变器被配置为向配电网络供电。 控制系统耦合到转换器和逆变器中的至少一个，其中控制系统被配置为调整转换器和逆变器中的至少一个的操作，以在至少一个 低电压事件和高电压事件。

公开(公告)号：US20150103573A1

公开(公告)日：2015-04-16

申请号：US14396917

申请日：2012-04-26

申请人： Huibin Zhu ,  David Smith ,  David Scott Wilmer ,  Maozhong Gong ,  Jun Zhu ,  Xueqin Wu

发明人： Huibin Zhu ,  David Smith ,  David Scott Wilmer ,  Maozhong Gong ,  Jun Zhu ,  Xueqin Wu

IPC分类号： H02M7/537

CPC分类号： H02M7/537 ,  H02M1/32 ,  H02M1/36 ,  H02M5/4585 ,  H02M2001/322

摘要： A power converter system includes a converter configured to be coupled to a power generation unit for receiving current from the power generation unit. A bus is coupled to the converter, and energy is stored within the bus when the current is conducted through the power converter system. A damping circuit is configured to be coupled to the bus and to the power generation unit, and a control system is coupled to the converter and to the damping circuit. The control system is configured to selectively discharge at least a portion of the energy stored within the bus through the damping circuit when the control system determines that a predetermined condition is met.

摘要翻译： 电力转换器系统包括被配置为耦合到用于从发电单元接收电流的发电单元的转换器。 总线耦合到转换器，并且当电流通过功率转换器系统传导时，能量被存储在总线内。 阻尼电路被配置为耦合到总线和发电单元，并且控制系统耦合到转换器和阻尼电路。 控制系统配置成当控制系统确定满足预定条件时，通过阻尼电路选择性地排放存储在总线内的能量的至少一部分。

公开(公告)号：US20130077367A1

公开(公告)日：2013-03-28

申请号：US13243294

申请日：2011-09-23

申请人： Huibin Zhu ,  David Smith ,  Anthony William Galbraith ,  Maozhong Gong ,  Xueqin Wu

发明人： Huibin Zhu ,  David Smith ,  Anthony William Galbraith ,  Maozhong Gong ,  Xueqin Wu

IPC分类号： H02M7/537 ,  G05F1/70

CPC分类号： H02J3/16 ,  H02J3/381 ,  H02J2003/001 ,  H02J2003/388 ,  H02M1/32 ,  Y02E40/34

摘要： System, power modules, and methods for supplying an output voltage to an electric grid are provided. One example power module includes a switching device configured to supply an output from a power generator to an electric grid, a feedback unit configured to provide a feedback signal indicative of a deviation of a parameter associated with the electric grid, and a controller coupled to the feedback unit and the switching device. The controller is configured to adjust a reactive current of the output in response to at least one grid fault event to ride through the at least one grid fault event, to modify the deviation provided from the feedback unit, to control the switching device based on the modified deviation, and to detect an islanding condition based on the parameter associated with the electric grid.

摘要翻译： 提供了用于向电网提供输出电压的系统，功率模块和方法。 一个示例性功率模块包括被配置为将来自发电机的输出提供给电网的开关装置，被配置为提供指示与电网相关联的参数的偏差的反馈信号的反馈单元，以及耦合到 反馈单元和开关装置。 控制器被配置为响应于至少一个电网故障事件来调整输出的无功电流以穿过至少一个电网故障事件，以修改从反馈单元提供的偏差，以基于 基于与电网相关的参数来检测孤岛状态。

公开(公告)号：US20130222951A1

公开(公告)日：2013-08-29

申请号：US13406944

申请日：2012-02-28

申请人： Huibin Zhu ,  David Smith ,  Anthony William Galbraith ,  David Scott Wilmer

发明人： Huibin Zhu ,  David Smith ,  Anthony William Galbraith ,  David Scott Wilmer

IPC分类号： H02H9/00

CPC分类号： H02H3/16 ,  B60L3/04 ,  H02H3/08 ,  H02H7/122 ,  H02H9/04

摘要： A fault protection scheme for a photovoltaic power converter system is provided. According to aspects of the present disclosure, a fault protection circuit is coupled between a power converter and a ground reference. The fault protection circuit includes a fuse and a current sensor coupled in series with the fuse. A controller is configured to receive current readings from the current sensor and compare the current readings to a current threshold. The current threshold is selected to be less than the fuse current rating of the fuse. The controller identifies a fault condition if the current flowing through the ground protection circuit exceeds the current threshold value. A contactor can also be provided to temporarily lift the power converter relative to the ground reference to determine the existence of other fault paths in the system.

摘要翻译： 提供了一种用于光伏功率转换器系统的故障保护方案。 根据本公开的方面，故障保护电路耦合在功率转换器和接地参考之间。 故障保护电路包括与保险丝串联耦合的保险丝和电流传感器。 控制器被配置为从当前传感器接收电流读数并将当前读数与当前阈值进行比较。 选择电流阈值小于保险丝的额定熔断器电流。 如果流过接地保护电路的电流超过当前阈值，则控制器识别出故障状态。 还可以提供接触器以临时提升功率转换器相对于接地参考以确定系统中其它故障路径的存在。

公开(公告)号：US09843182B2

公开(公告)日：2017-12-12

申请号：US14354336

申请日：2011-10-28

申请人： Huibin Zhu ,  David Smith ,  Maozhong Gong ,  Xeuqin Wu

发明人： Huibin Zhu ,  David Smith ,  Maozhong Gong ,  Xeuqin Wu

IPC分类号： H02H7/10 ,  H02J3/28 ,  G01R31/02 ,  G01R19/25 ,  H02J3/38

CPC分类号： H02H7/10 ,  G01R19/2513 ,  G01R31/024 ,  H02J3/28 ,  H02J3/38 ,  H02J3/383 ,  Y02E10/563 ,  Y02E10/566 ,  Y02E70/30

摘要： Systems (100), power modules (108), and methods for using in controlling a converter (110) coupled between a power generator (104) and an electric grid (102). A power module (108) includes the converter (110) configured to supply the output from the power generator (104) to the electric grid (102) and a controller (112) coupled to the converter (110) and configured to disable the converter (110) in response to a grid fault event, to identify the type or the grid fault event after a first predetermined interval from disabling the converter (110), and to enable switching of the converter (110), when the type of the grid fault event is identified as a low voltage condition.

公开(公告)号：US20130258732A1

公开(公告)日：2013-10-03

申请号：US13430826

申请日：2012-03-27

申请人： Huibin Zhu ,  David Smith ,  David Scott Wilmer

发明人： Huibin Zhu ,  David Smith ,  David Scott Wilmer

IPC分类号： H02M7/44

CPC分类号： G01R31/42 ,  H02S50/10

摘要： A system and method for reducing reactive current in burn-in test systems for solar power converters is disclosed. An emulator configured to simulate a DC power source and the power converter subject to the burn-in test can be coupled in a two-unit circulating configuration. An AC feeder line configured to supply power to the two-unit circulating configuration. A controller can be configured to adjust the output of one or more of the emulator and power converter to reduce reactive current flowing in the AC feeder line. For instance, the controller can adjust the modulation of switching devices used in the power converter or emulator to adjust the power factor of various components of the burn-in test system to compensate for the reactive current in the AC feeder line.

摘要翻译： 公开了一种降低太阳能转换器的老化测试系统中无功电流的系统和方法。 配置成模拟DC电源的仿真器和经过老化测试的功率转换器可以以两单元循环配置耦合。 AC供电线路，配置为向两单元循环配置供电。 控制器可以被配置为调整一个或多个仿真器和功率转换器的输出，以减少在AC馈线中流动的无功电流。 例如，控制器可以调整在功率转换器或仿真器中使用的开关器件的调制，以调整老化测试系统的各个部件的功率因数，以补偿交流馈线中的无功电流。

公开(公告)号：US20130119763A1

公开(公告)日：2013-05-16

申请号：US13295591

申请日：2011-11-14

申请人： Huibin Zhu ,  David Smith ,  David Scott Wilmer

发明人： Huibin Zhu ,  David Smith ,  David Scott Wilmer

IPC分类号： H02J1/00 ,  H02M7/537

CPC分类号： H02M1/36 ,  H02M7/00 ,  Y10T307/50

摘要： A power converter includes a plurality of direct current (DC) conduits and a precharging and clamping circuit coupled to the DC conduits. The precharging and clamping circuit includes at least one diode, at least one switching device coupled in parallel with the diode, and at least one contactor device coupled to an alternating current (AC) source and the diode. The at least one contactor device is configured to facilitate alternating said precharging and clamping circuit between precharging operation and voltage clamping operation.

摘要翻译： 功率转换器包括多个直流（DC）导管和耦合到DC导管的预充电和钳位电路。 预充电和钳位电路包括至少一个二极管，与二极管并联耦合的至少一个开关器件，以及耦合到交流（AC）源极和二极管的至少一个接触器器件。 所述至少一个接触器装置构造成便于在预充电操作和电压钳位操作之间交替所述预充电和钳位电路。