公开(公告)号：WO2012044646A1

公开(公告)日：2012-04-05

申请号：PCT/US2011/053591

申请日：2011-09-28

Applicant: XANTREX TECHNOLOGY, INC. ,  WEST, Rick

Inventor： WEST, Rick

IPC: H02H7/20 ,  H01H9/54

CPC classification number: H02H7/20 ,  H02H3/05 ,  H02H3/08 ,  Y10T307/696

Abstract: A combiner circuit and voltage protection circuit is disclosed. A plurality of photovoltaic sources is provided. A set of fuses, each having one side coupled to one of the plurality of photovoltaic sources is provided. A set of contacts, each having one side coupled to the other side of one of the fuses is provided. The other side of the contacts are coupled together to combine the output of the photovoltatic sources to an output interface, the output interface being coupled to the load. A set of diodes are each coupled to each of the set of fuses and form a current path around the set of contacts. A transistor is coupled to each of the diodes and the load interface. The transistor has an on state completing the flow of current through the diodes around the set of contacts to the load interface.

Abstract translation: 公开了组合器电路和电压保护电路。 提供多个光源。 提供了一组熔丝，每组熔丝具有耦合到所述多个光伏源之一的一侧。 提供了一组触点，每个触点具有联接到一个保险丝的另一侧的一侧。 触点的另一侧耦合在一起，将光伏电源的输出组合到输出接口，输出接口耦合到负载。 一组二极管各自耦合到该组熔丝中的每一个并且形成围绕该组触点的电流路径。 晶体管耦合到每个二极管和负载接口。 晶体管具有导通状态，其完成了通过该组触点周围的二极管流到负载接口的电流。

公开(公告)号：WO2011022265A1

公开(公告)日：2011-02-24

申请号：PCT/US2010/045151

申请日：2010-08-11

Applicant: XANTREX TECHNOLOGY INC. ,  SERBAN, Emanuel

Inventor： SERBAN, Emanuel

IPC: G05F1/67 ,  H02J3/38 ,  H02J7/02 ,  H02J7/34

CPC classification number: G05F1/67 ,  H02M1/44 ,  Y02E10/58 ,  Y10S323/906

Abstract: A control strategy for distributed power generation modules in a power system that varies the line frequency or voltage according to a predetermined pattern to cause a PV inverter to modify its power output and thereby avoid overcharging a battery. When the power system operates in islanded mode, the AC load demand can be lower than the available energy from the PV array, causing the battery to become overcharged. To avoid this scenario, a hybrid inverter executes a pattern generator algorithm that varies the line frequency or voltage linearly, exponentially or any mathematical function or look-up tables. The PV inverter executes a pattern detection algorithm that detects the linear, exponential, or any mathematical function or look-up table change in the line frequency. In response, the PV inverter modifies its power output until an overcharging condition of the battery is removed. The line frequency/voltage can be varied within the anti-islanding limits to avoid premature disruption of the power system, and no additional settings are required at the device level in order to operate in any mode of operation: islanded, grid-connected or genset-connected.

Abstract translation: 一种用于根据预定模式改变线路频率或电压的电力系统中的分布式发电模块的控制策略，以使PV逆变器修改其功率输出，从而避免电池过度充电。 当电力系统工作在孤岛模式时，交流负载需求可能低于来自光伏阵列的可用能量，导致电池过充电。 为了避免这种情况，混合型逆变器执行模式发生器算法，其线性地，线性地，指数地或任何数学函数或查找表来改变线路频率或电压。 PV逆变器执行模式检测算法，其检测线路频率中的线性，指数或任何数学函数或查找表变化。 作为响应，PV逆变器修改其功率输出，直到电池的过充电状态被去除。 线路频率/电压可以在防孤岛限制内变化，以避免电力系统的过早中断，并且在设备级别不需要额外的设置，以便在任何操作模式下运行：孤岛，并网或发电机组 -连接的。

公开(公告)号：WO2004098261A2

公开(公告)日：2004-11-18

申请号：PCT/US2004/013561

申请日：2004-05-03

Applicant: XANTREX TECHNOLOGY INC. ,  HUDSON, Raymond, M.

Inventor： HUDSON, Raymond, M.

IPC: H02P7/06 ,  H02P9/00 ,  H02P9/04 ,  H02P9/10 ,  H02P9/46 ,  H02P11/00

CPC classification number: F03D7/0272 ,  F03D9/255 ,  F05B2270/107 ,  F05B2270/337 ,  H02P9/007 ,  H02P9/102 ,  H02P9/46 ,  H02P27/05 ,  H02P2101/15 ,  Y02E10/723

Abstract: A controller (28) for a doubly fed induction generator (12, 20) adjusts control signals to a rotor side converter (24) and line side converter (22) to adjust rotor current when a voltage transient on a utility grid (10) occurs, so that the doubly fed induction generator can ride through the transient. The controller can also turn off the transistors of the rotor side converter (24) to reduce rotor current and/or activate a crowbar (42) to reduce the voltage of the DC link (26) connecting the converters (22, 24) when significant voltage transients occur on the grid (10). This permits continued operation of the DFIG system without disconnecting from the grid.

Abstract translation: 用于双馈感应发电机（12,20）的控制器（28）将调节信号调整到转子侧转换器（24）和线路侧转换器（22），以在公用电网（10）上的电压瞬变发生时调节转子电流 ，使得双馈感应发电机可以穿过瞬变。 控制器还可以关闭转子侧转换器（24）的晶体管，以减少转子电流和/或激活撬棒（42），以便在显着的时候降低连接转换器（22,24）的DC链路（26）的电压 电压瞬变发生在电网（10）上。 这允许DFIG系统的继续运行，而不断开电网。

公开(公告)号：WO2013122610A1

公开(公告)日：2013-08-22

申请号：PCT/US2012/025739

申请日：2012-02-17

Applicant: XANTREX TECHNOLOGY, INC. ,  GARABANDIC, Djordje

Inventor： GARABANDIC, Djordje

IPC: G05F1/67

CPC classification number: H02S50/00 ,  G01R21/133 ,  G05F1/67 ,  Y02E10/58

Abstract: Disclosed are methods, systems, and other implementations, including a method that includes measuring a plurality of samples of power produced by a photovoltaic (PV) array over a first interval of time, determining, based on the measured plurality of samples a non-linear predictive model of a behavior of the power produced by the PV array, and performing a first adjustment of the PV array's voltage at a second time instant subsequent to an end of the first interval of time. The method further includes measuring at a third time instant another sample of the power of the PV array with the adjusted voltage, and determining a power difference between the power of the PV array with the adjusted voltage at the third time instant and a computed power level of the PV array at the third time instant determined from the non-linear predictive model.

Abstract translation: 公开了方法，系统和其他实施方式，包括一种方法，其包括在第一时间间隔内测量由光伏（PV）阵列产生的功率的多个样本，基于所测量的多个样本确定非线性 由PV阵列产生的功率的行为的预测模型，以及在第一时间间隔结束之后的第二时刻执行PV阵列的电压的第一调整。 该方法还包括在第三时间点测量具有调整的电压的PV阵列的功率的另一采样，并且确定PV阵列的功率与第三时刻的调整电压之间的功率差和计算出的功率电平 在从非线性预测模型确定的第三时刻的PV阵列。

公开(公告)号：WO2012166788A2

公开(公告)日：2012-12-06

申请号：PCT/US2012039978

申请日：2012-05-30

Applicant: XANTREX TECHNOLOGY INC ,  GARABANDIC DJORDJE

Inventor： GARABANDIC DJORDJE

IPC: H02J3/36 ,  H02J5/00

CPC classification number: H02J3/383 ,  H02J3/46 ,  H02S40/32 ,  H02S40/34 ,  H02S50/00 ,  Y02E10/563 ,  Y10T307/724

Abstract: A photovoltaic system includes: a photovoltaic generator comprising strings that each includes one or more photovoltaic cells; a power converter; switches; and a controller. The power converter is configured to convert direct current (DC) power provided by the photovoltaic generator into alternating current (AC) power, and to output the AC power. Each switch is associated with one of the strings and is configured to connect the associated string to the power converter when set to a first setting, such that power generated by the first string can flow to the power converter. Each switch is also configured to disconnect the string from the power converter when set to a second setting. The controller is configured to control the power provided by the photovoltaic generator by selectively connecting the strings of the photovoltaic generator to the power converter by controlling the settings of the switches.

Abstract translation: 光伏系统包括：光伏发电机，其包括每个包括一个或多个光伏电池的串; 电源转换器; 开关; 和控制器。 功率转换器被配置为将由光伏发电机提供的直流（DC）功率转换为交流（AC）功率并输出AC电力。 每个开关与一个串相关联，并且被配置为当设置为第一设置时将相关联的串连接到功率转换器，使得由第一串产生的功率可以流到功率转换器。 每个开关也被配置为在设置为第二个设置时将串与电源转换器断开。 控制器被配置为通过控制开关的设置来选择性地将光伏发电机的串连接到功率转换器来控制由光伏发电机提供的功率。

公开(公告)号：WO2012166605A2

公开(公告)日：2012-12-06

申请号：PCT/US2012/039595

申请日：2012-05-25

Applicant: XANTREX TECHNOLOGY INC. ,  KAISER, Karl

Inventor： KAISER, Karl

IPC: H02M7/42 ,  H02N6/00

CPC classification number: H02J3/383 ,  H02J3/385 ,  Y02E10/563 ,  Y02E10/58

Abstract: A controller for a photovoltaic system includes: a voltage control module configured perform a method for initializing a power inverter of the photovoltaic system including: opening an alternating current (AC) mains switch to disconnect the inverter from a power grid, opening a direct current (DC) switch to disconnect the inverter from a solar cell array; closing the AC mains switch to allow power to flow from the power grid to a DC capacitor bank connected to the inverter to charge the DC capacitor bank, monitoring the DC capacitor bank until a desired voltage is reached, initiating the operation of the inverter, stabilizing the DC voltage received at the inverter from the capacitor bank at a predetermined power up voltage; waiting for an inverter initialization period to elapse, and adjusting DC voltage received by inverter to a maximum voltage associated with a maximum power level of the solar cell array.

Abstract translation: 一种用于光伏系统的控制器，包括：电压控制模块，配置为对所述光伏系统的电力逆变器进行初始化的方法，包括：打开交流（AC）电源开关以将逆变器与电网断开，打开直流电（ DC）开关将逆变器与太阳能电池阵列断开; 关闭交流电源开关，以允许电力从电网流向连接到逆变器的直流电容器组，以对直流电容器组充电，监控直流电容器组直到达到所需的电压，启动逆变器的运行，稳定 在预定的上电电压下从电容器组接收的反相器上的DC电压; 等待逆变器初始化时间过去，并且将逆变器接收的直流电压调整到与太阳能电池阵列的最大功率电平相关联的最大电压。

公开(公告)号：WO2007139684A3

公开(公告)日：2008-12-24

申请号：PCT/US2007011468

申请日：2007-05-11

Applicant: XANTREX TECHNOLOGY INC ,  WEST RICK

Inventor： WEST RICK

IPC: G05F1/00

CPC classification number: H02M7/493 ,  H02M1/12 ,  H02M7/501 ,  H02M2001/007 ,  Y02E10/56 ,  Y10S323/906

Abstract: An electrical DC-to-AC power conversion apparatus is disclosed that is primarily intended for use with solar photovoltaic sources in electric utility grid-interactive applications. The invention improves the conversion efficiency and lowers the cost of DC-to-AC inverters. The enabling technology is a novel inverter circuit topology, where the bulk of the throughput power, from DC source to AC utility, is processed only once. The inverter does not require an isolation transformer and can be connected directly to a 480/277 Vac utility grid. The invention also allows the power converter to start into photovoltaic array having higher open circuit voltages. The invention also uses active ripple current cancellation to substantially reduce the cost, size and weight of the main filter inductors.

Abstract translation: 公开了一种主要用于电力电网交互应用中的太阳能光伏源的电DC-AC电力转换装置。 本发明提高了转换效率并降低了DC-AC逆变器的成本。 启用技术是一种新颖的逆变器电路拓扑，其中从DC源到AC电力的大部分吞吐量功率只被处理一次。 变频器不需要隔离变压器，可直接与480/277 Vac电网连接。 本发明还允许功率转换器开始具有较高开路电压的光伏阵列。 本发明还使用主动纹波电流消除来显着降低主滤波电感器的成本，尺寸和重量。

公开(公告)号：WO2012101520A1

公开(公告)日：2012-08-02

申请号：PCT/IB2012/000305

申请日：2012-01-27

Applicant: XANTREX TECHNOLOGY INC. ,  MCDIARMID, Ralph ,  MILETIC, Zoran

Inventor： MCDIARMID, Ralph ,  MILETIC, Zoran

IPC: G01R31/327 ,  H01L31/042

CPC classification number: G01R31/07 ,  G01R31/026 ,  H02H3/046 ,  H02H3/16 ,  H02H7/20 ,  H02S50/10

Abstract: A method/circuit for determining the continuity of a fuse comprising a first and second galvanic isolators and a fuse, signal-generation and signal-detection units, each communicatively coupled to a galvanic isolator. A signal is sent through the first galvanic isolator and received through the second galvanic isolator by the detection unit. A detection signal is generated indicating on whether the electrical signal is present in the closed circuit comprising the fuse. A circuit for determining the continuity of a fuse comprised in a ground fault detection circuit of a photovoltaic array is described.

Abstract translation: 一种用于确定包括第一和第二电流隔离器的熔丝的连续性的方法/电路，以及每个通信地耦合到电流隔离器的熔丝，信号发生和信号检测单元。 信号通过第一电隔离器发送并通过第二电隔离器被检测单元接收。 产生检测信号，指示电信号是否存在于包括保险丝的闭合电路中。 描述了用于确定包含在光伏阵列的接地故障检测电路中的保险丝的连续性的电路。

公开(公告)号：WO2012021430A1

公开(公告)日：2012-02-16

申请号：PCT/US2011/046891

申请日：2011-08-08

Applicant: XANTREX TECHNOLOGY INC. ,  WEST, Richard, T.

Inventor： WEST, Richard, T.

IPC: H01H47/00 ,  H01H47/32 ,  H01H9/54 ,  H01H33/59

CPC classification number: H01H47/001 ,  H01H9/541 ,  H01H33/596 ,  Y10T307/724 ,  Y10T307/937

Abstract: An electrical switch apparatus for use in connecting and disconnecting a DC power source and a load includes first and second pairs of controllable electromechanical contacts coupled to the DC power source and the load for connecting the power source to the load when the contacts are closed, and disconnecting the power source from the load when the contacts are open. A controller is coupled to the electromechanical contacts and programmed to produce control signals for opening and closing the contacts. A diode is coupled to the electromechanical contacts to prevent electrical current from flowing from the load to the power source, and a controllable semiconductor switch is coupled to the controller and across the power source for momentarily short circuiting the source in response to a control signal indicating a transition of either or both of the first and second pairs of electromechanical contacts from a closed condition to an open condition.

Abstract translation: 用于连接和断开DC电源和负载的电气开关装置包括耦合到DC电源的第一和第二对可控机电触点和用于当触点闭合时将电源连接到负载的负载;以及 当触点打开时，断开电源与负载的连接。 控制器耦合到机电触点并被编程以产生用于打开和闭合触点的控制信号。 二极管耦合到机电触头，以防止电流从负载流向电源，并且可控半导体开关耦合到控制器并跨过电源，以响应于控制信号指示源短暂地短路 第一对和第二对机电触点中的任一个或两个从闭合状态到断开状态的转变。

公开(公告)号：WO2012012276A2

公开(公告)日：2012-01-26

申请号：PCT/US2011/044112

申请日：2011-07-15

Applicant: XANTREX TECHNOLOGY INC. ,  WEST, Richard, T.

Inventor： WEST, Richard, T.

IPC: H02M7/00

CPC classification number: H02H7/205 ,  H02H3/16

Abstract: An electrical power converter for converting power from a bipolar DC source to supply an AC load is disclosed. For one such embodiment the bipolar DC source is a photovoltaic array and the AC power is sourced into an electric power grid. The bipolar photovoltaic array has positive and negative voltage potentials with respect to earth ground. The converter is a utility interactive inverter which does not require an isolation transformer at the electric power grid interface. Embodiments of the invention include methods of detecting and interrupting DC ground faults in the photovoltaic array.

Abstract translation: 公开了一种用于转换来自双极DC源的电力以供应AC负载的电力转换器。 对于一个这样的实施例，双极DC源是光伏阵列，并且AC电力被输入电力网。 双极光伏阵列相对于大地具有正电压和负电压。 该变流器是一种实用型交互式变流器，不需要电网接口处的隔离变压器。 本发明的实施例包括检测和中断光伏阵列中的DC接地故障的方法。