公开(公告)号：US09252596B2

公开(公告)日：2016-02-02

申请号：US13304935

申请日：2011-11-28

申请人： Ara Panosyan ,  Reigh Allen Walling

发明人： Ara Panosyan ,  Reigh Allen Walling

IPC分类号： H02J1/00 ,  H02J3/00 ,  H02J3/18 ,  H02J3/38

CPC分类号： H02J3/1835 ,  H02J3/382 ,  H02J3/383 ,  H02J3/386 ,  Y02E10/563 ,  Y02E10/763 ,  Y02E40/30 ,  Y10T307/718

摘要： A reactive power compensation method includes generating a variable power factor curve for at least one power generator based on information regarding network parameters; obtaining a value of an active output power parameter from the at least one generator; computing a reactive power based on the variable power factor curve and the value of the active power output parameter of the at least one generator; generating a reactive power compensation command based on the computed reactive power; and transmitting the reactive power compensation command to the at least one power generator for controlling operation of the at least one power generator.

摘要翻译： 无功功率补偿方法包括基于关于网络参数的信息为至少一个发电机生成可变功率因数曲线; 从所述至少一个发电机获得有效输出功率参数的值; 基于所述可变功率因数曲线和所述至少一个发电机的有功功率输出参数的值来计算无功功率; 基于所计算的无功功率产生无功功率补偿命令; 以及向所述至少一个发电机发送所述无功功率补偿命令，以控制所述至少一个发电机的运行。

公开(公告)号：US20140211529A1

公开(公告)日：2014-07-31

申请号：US13751704

申请日：2013-01-28

申请人： GENERAL ELECTRIC COMPANY

发明人： Jeyaprakash Kandasamy ,  Remesh Kumar Keeramthode ,  NVS Kumar Srighakollapu

IPC分类号： H02M7/797 ,  G05F1/70

CPC分类号： H02M7/797 ,  H02J3/1835 ,  H02J3/383 ,  H02M7/4807 ,  Y02E10/563 ,  Y02E40/30

摘要： A micro inverter includes a synchronous bi-directional power converter and a controller communicatively coupled to the synchronous bi-directional power converter. The controller is configured to operate the micro inverter in a forward conduction mode when photovoltaic (PV) power is available and operate the micro inverter in at least one of a reverse conduction mode and a reactive power compensation mode when PV power is unavailable.

摘要翻译： 微逆变器包括同步双向功率转换器和通信地耦合到同步双向功率转换器的控制器。 控制器被配置为当光伏（PV）功率可用时以正向传导模式操作微逆变器，并且当PV功率不可用时，以反向导通模式和无功功率补偿模式中的至少一个操作微逆变器。

公开(公告)号：US20130320901A1

公开(公告)日：2013-12-05

申请号：US13876223

申请日：2011-09-27

申请人： Victor Arestov

发明人： Victor Arestov

IPC分类号： G05F1/70 ,  H02P23/00

CPC分类号： G05F1/70 ,  H02J3/1835 ,  H02P23/26 ,  Y02E40/30

摘要： A circuit arrangement is for operating a load having a reactive characteristic on an AC power supply. The circuit arrangement enables the best possible reactive power compensation, that is, enables operation close to a cos θ of 1, in order to increase the overall efficiency of the arrangement or to achieve optimal energy savings. In order to control critical operating states, a feedback loop is provided that supplies a control current to a further reactive circuit element. This further circuit element is arranged parallel to the load or to the power factor correction capacitor, and is acted upon by a control current such that the control current counteracts a change in the reactive component of the load. The control current is derived from the load current as a variable proportional to the load current. In this way, a reactor for optimizing electromagnetic consumption is created.

摘要翻译： 电路装置用于在AC电源上操作具有无功特性的负载。 电路布置使得能够实现最佳可能的无功补偿，即使得接近cosθ为1的操作，以便提高布置的整体效率或实现最佳的能量节省。 为了控制关键的工作状态，提供了一个反馈回路，为另一个无功电路元件提供一个控制电流。 该另外的电路元件平行于负载或功率因数校正电容器布置，并且通过控制电流进行操作，使得控制电流抵消负载的无功分量的变化。 控制电流从负载电流导出为与负载电流成比例的变量。 以这种方式，产生用于优化电磁消耗的电抗器。

公开(公告)号：US20130258718A1

公开(公告)日：2013-10-03

申请号：US13435380

申请日：2012-03-30

申请人： Joshua Brian Pankratz

发明人： Joshua Brian Pankratz

IPC分类号： H02M7/44 ,  H02M3/22

CPC分类号： H02J3/1835 ,  H02J3/383 ,  Y02E10/563 ,  Y02E40/30

摘要： Low voltage ride through systems, methods, and apparatus are disclosed. An exemplary method includes applying real power from a photovoltaic array to an AC grid with an inverter, detecting a sag in the voltage in the AC grid, and responsive to the sag in the voltage in the AC grid, power from the photovoltaic array is utilized to provide power to at least one inverter-related component. When the sag in the voltage has abated, real power from the photovoltaic array is applied once again to the AC grid.

摘要翻译： 公开了低压穿越系统，方法和装置。 一种示例性方法包括将来自光伏阵列的实际功率应用于具有逆变器的AC电网，检测AC电网中的电压中的下垂，以及响应于AC电网中的电压的下垂，利用来自光伏阵列的功率 以向至少一个逆变器相关部件提供电力。 当电压下降时，来自光伏阵列的实际功率再次施加到AC电网。

公开(公告)号：US20130234523A1

公开(公告)日：2013-09-12

申请号：US13413507

申请日：2012-03-06

申请人： Dmitriy Anichkov ,  Mahesh Morjaria

发明人： Dmitriy Anichkov ,  Mahesh Morjaria

IPC分类号： H02J1/00

CPC分类号： H02J3/1835 ,  Y02E40/30 ,  Y10T307/707

摘要： A method and apparatus to control power output of a power plant. A control module includes a plurality of controllers for different power parameters of the power plant and a master controller. The plurality of controllers receive measured parameters from the power plant, compare the received parameters with received set points, and provide respective reactive power commands to the power plant. The master controller determines which of the plurality of controllers is to be enabled to output a reactive power command to the power plant.

摘要翻译： 一种控制发电厂功率输出的方法和装置。 控制模块包括用于发电厂的不同功率参数的多个控制器和主控制器。 多个控制器从发电厂接收测量参数，将接收的参数与接收的设定点进行比较，并向发电厂提供相应的无功功率命令。 主控制器确定多个控制器中的哪一个将被启用以向发电厂输出无功功率命令。

公开(公告)号：US08467210B2

公开(公告)日：2013-06-18

申请号：US12741657

申请日：2007-11-07

申请人： Andreas Gerner ,  Tanja Dambach ,  Christa Werner ,  Martin Werner ,  Severin Werner

发明人： Andreas Gerner ,  Armin Werner

IPC分类号： H02M3/24

CPC分类号： H02J3/26 ,  H02J3/1835 ,  Y02E40/30 ,  Y02E40/50

摘要： In order to provide a method for regulating a reactive power compensator, which is connected to an alternating current line having multiple phases, wherein for each phase an actual voltage V12, V23 and V31 present thereon is detected and from the actual voltages V12, V23 and V31 a counter system actual fraction is calculated. A control circuit suppresses the counter system actual fraction. A feedback loop determines the level of suppression of the counter system actual fraction with the help of controlled parameters. The method enables an adjustment of the counter system that is largely independent from operating staff. Accordingly, a comparator unit compares the counter system actual fraction to the counter system target fraction and defines the controlled parameters as a function of the comparison.

摘要翻译： 为了提供一种用于调节无功功率补偿器的方法，该无功功率补偿器连接到具有多相的交流线路，其中对于每个相位，检测其上存在的实际电压V12，V23和V31，并从实际电压V12，V23和 计算V31计数器实际分数。 控制电路抑制计数器系统的实际分数。 反馈环路通过受控参数确定计数器系统实际分数的抑制水平。 该方法使得能够大量独立于操作人员的计数器系统的调整。 因此，比较器单元将计数系统实际分数与计数系统目标分数进行比较，并将受控参数定义为比较的函数。

公开(公告)号：US20130134789A1

公开(公告)日：2013-05-30

申请号：US13304935

申请日：2011-11-28

申请人： Ara Panosyan ,  Reigh Allen Walling

发明人： Ara Panosyan ,  Reigh Allen Walling

IPC分类号： G05F1/70 ,  H02J1/00

CPC分类号： H02J3/1835 ,  H02J3/382 ,  H02J3/383 ,  H02J3/386 ,  Y02E10/563 ,  Y02E10/763 ,  Y02E40/30 ,  Y10T307/718

摘要： A reactive power compensation method includes generating a variable power factor curve for at least one power generator based on information regarding network parameters; obtaining a value of an active output power parameter from the at least one generator; computing a reactive power based on the variable power factor curve and the value of the active power output parameter of the at least one generator; generating a reactive power compensation command based on the computed reactive power; and transmitting the reactive power compensation command to the at least one power generator for controlling operation of the at least one power generator.

摘要翻译： 无功功率补偿方法包括基于关于网络参数的信息为至少一个发电机生成可变功率因数曲线; 从所述至少一个发电机获得有效输出功率参数的值; 基于所述可变功率因数曲线和所述至少一个发电机的有功功率输出参数的值来计算无功功率; 基于所计算的无功功率产生无功功率补偿命令; 以及向所述至少一个发电机发送所述无功功率补偿命令，以控制所述至少一个发电机的运行。

公开(公告)号：US20130094264A1

公开(公告)日：2013-04-18

申请号：US13634205

申请日：2010-03-15

申请人： William Crookes ,  David Reginald Trainer ,  Donald Collin Murray Oates

发明人： William Crookes ,  David Reginald Trainer ,  Donald Collin Murray Oates

IPC分类号： H02M7/217

CPC分类号： H02M7/217 ,  H02J3/1835 ,  H02J3/1857 ,  H02M7/49 ,  H02M2007/4835 ,  Y02E40/12 ,  Y02E40/16 ,  Y02E40/26 ,  Y02E40/30

摘要： A static synchronous compensator for use in reactive power compensation, the static synchronous compensator comprising at least one primary compensator limb including first and second DC terminals, and an AC terminal for connection in use to an AC network, the or each primary compensator limb defining first and second limb portions, each limb portion-including at least one switching element connected in series with a chain-link converter-between a respective one of the first and second DC terminate and the AC terminal, the switching elements of the first and second limb portions being operable to switch the respective chain-link converters in and out of circuit between the respective DC terminal and the AC terminal and the chain-link converters being operable to generate a voltage waveform at the AC terminal; and a secondary compensator limb including at least one DC link capacitor connected between the first and second DC terminals, the secondary compensator limb being connected in parallel with the or each primary compensator limb.

摘要翻译： 一种用于无功补偿的静态同步补偿器，所述静态同步补偿器包括至少一个包括第一和第二DC端子的主补偿器支路和用于连接到AC网络的AC端子，所述或每个初级补偿器支路限定第一 和第二分支部分，每个分支部分 - 包括与第一和第二直流终端之间的相应一个与AC端子之间的链链路转换器串联连接的至少一个开关元件，第一和第二支路的开关元件 部分可操作以在相应的直流端子和交流端子之间切换各个链节转换器进入和离开电路，链式转换器可操作以在AC端子处产生电压波形; 以及次级补偿器支路，其包括连接在所述第一和第二DC端子之间的至少一个DC链路电容器，所述辅助补偿器支路与所述或每个主要补偿器支路并联连接。

公开(公告)号：US20130070489A1

公开(公告)日：2013-03-21

申请号：US13699899

申请日：2010-08-18

申请人： Dongsheng Zhang

发明人： Dongsheng Zhang

IPC分类号： H02M5/458

CPC分类号： H02M5/458 ,  H02J3/1835 ,  H02M5/45 ,  H02M2001/0074 ,  H02M2001/008 ,  Y02E40/30

摘要： The disclosure discloses an electric energy conversion device and system, to solve the problems of severe harmonic pollution, low power factor during the electric energy feedback from a power generation device to a power grid in the conventional art. The electric energy conversion device comprises: a plurality of single-phase rectifier bridge circuits, a first input ends of the a plurality of single-phase rectifier bridge circuits, and a second input ends of the a plurality of single-phase rectifier bridge circuits, wherein two input ends of each three-phase fully-controlled bridge circuit are connected with two output ends of each the rectifier bridge circuit respectively. Through the technical solution of the disclosure, the waveform coefficient of the current of the power generation device is improved, the harmonic wave is reduced, and the power factor is improved.

摘要翻译： 本发明公开了一种电能转换装置和系统，用于解决传统技术中从发电装置到电网的电能反馈期间严重谐波污染的问题，低功率因数。 电能转换装置包括：多个单相整流桥电路，多个单相整流桥电路的第一输入端和多个单相整流桥电路的第二输入端， 其中每个三相全控桥电路的两个输入端分别与每个整流桥电路的两个输出端连接。 通过本发明的技术方案，提高了发电装置的电流波形系数，降低了谐波，提高了功率因数。

公开(公告)号：US08325499B2

公开(公告)日：2012-12-04

申请号：US13215527

申请日：2011-08-23

申请人： Philip T. Krein ,  Robert S. Balog, Jr.

发明人： Philip T. Krein ,  Robert S. Balog, Jr.

IPC分类号： H02J1/02

CPC分类号： H02J3/1835 ,  H02J3/1842 ,  H02J3/383 ,  H02J3/387 ,  H02J2001/004 ,  Y02E10/563 ,  Y02E40/22 ,  Y02E40/30

摘要： A method is provided for minimizing a double-frequency ripple power exchanged between a load and an energy source, the energy source delivering electrical power to the load through a single-phase power conditioner, and the power conditioner being coupled to an energy storage device. The method includes determining a phase shift of an AC output signal of the power condition and an average AC output power of the power conditioner. The average AC output power may be a predetermined value or a calculated value based on sensed or measured signals. The method further includes generating an AC signal at an energy storage device. The generated AC signal has an amplitude that is a function of the average AC output power and a phase shift substantially equal to 45 degrees minus an amount that is dependent on the determined phase shift. In some embodiments, the phase shift may be determined to be of a non-zero value.

摘要翻译： 提供了一种用于最小化负载和能量源之间交换的双频纹波功率的方法，所述能量源通过单相功率调节器将功率传送到负载，并且所述功率调节器耦合到能量存储装置。 该方法包括确定功率条件的AC输出信号的相移和功率调节器的平均AC输出功率。 平均交流输出功率可以是基于感测或测量信号的预定值或计算值。 该方法还包括在能量存储装置处产生AC信号。 所产生的AC信号具有作为平均AC输出功率的函数的幅度和基本上等于45度的相移减去取决于确定的相移的量。 在一些实施例中，可以将相移确定为非零值。