公开(公告)号：US09160245B2

公开(公告)日：2015-10-13

申请号：US13344060

申请日：2012-01-05

Applicant: Joachim Boecker ,  Michael Loenneker

Inventor： Joachim Boecker ,  Michael Loenneker

IPC: H02M5/45 ,  H02M5/27 ,  H02P9/02 ,  H02P13/06 ,  H02M3/34

CPC classification number: H02M5/272 ,  H02P9/02 ,  H02P13/06 ,  Y02E10/76

Abstract: Described is a method for operating a converter for a system for generating electrical energy. In an embodiment of the method, the output voltage of the converter is converted to a d, q coordinate system, wherein the d, q coordinate system is assigned to the frequency of the voltage for the energy supply grid. A desired value is furthermore specified in the d, q coordinate system, several momentary or future values are determined from the output voltage in the d, q coordinate system for different switch positions of the converter, deviations between the desired value and the momentary or future values are determined in the d, q coordinate system, and the converter is switched to one of the switch positions in dependence on these deviations.

Abstract translation: 描述了一种用于操作用于产生电能的系统的转换器的方法。 在该方法的一个实施例中，转换器的输出电压被转换成d，q坐标系，其中d，q坐标系被分配给能量供电电网的电压的频率。 在d，q坐标系中进一步规定了一个期望的值，对于转换器的不同开关位置的d，q坐标系中的输出电压确定几个瞬时值或将来的值，在期望值和瞬时或未来之间的偏差 值在d，q坐标系中确定，并且根据这些偏差将转换器切换到开关位置之一。

公开(公告)号：US09093854B2

公开(公告)日：2015-07-28

申请号：US13915757

申请日：2013-06-12

Applicant: Robert Bosch GmbH

Inventor： Martin Kessler

IPC: H02J3/00

CPC classification number: H02J3/005 ,  B60L11/1803 ,  B60L11/1864 ,  B60L2200/32 ,  B60L2220/12 ,  B60L2220/14 ,  B60L2220/16 ,  B60L2220/18 ,  B60L2240/545 ,  B60L2240/547 ,  B60L2240/549 ,  H02M1/15 ,  Y02E10/76 ,  Y02E70/30 ,  Y02T10/7005 ,  Y02T10/7061 ,  Y10T307/609

Abstract: A damping circuit for an energy storage device. The damping circuit comprises a current detection device designed to detect an output current of energy supply strings or the energy storage device and to generate an output current signal dependent on the output current. The damping circuit also includes a closed-loop control circuit coupled to the current detection device. The closed-loop control circuit designed to adjust the output current signal to a setpoint current signal and to output a corresponding current control signal. A first winding of a transformer is coupled to an output connection of the energy storage device. A second winding is galvanically isolated from the first winding. A compensation current generation device is coupled to the closed-loop control circuit, and is designed to feed a compensation current into the second winding of the transformer depending on the current control signal.

Abstract translation: 一种用于储能装置的阻尼电路。 阻尼电路包括设计用于检测能量供应串或能量存储装置的输出电流并根据输出电流产生输出电流信号的电流检测装置。 阻尼电路还包括耦合到电流检测装置的闭环控制电路。 闭环控制电路设计成将输出电流信号调整到设定值电流信号并输出​​相应的电流控制信号。 变压器的第一绕组耦合到能量存储装置的输出连接。 第二绕组与第一绕组电隔离。 补偿电流产生装置耦合到闭环控制电路，并且被设计成根据电流控制信号将补偿电流馈送到变压器的第二绕组中。

公开(公告)号：US09030174B2

公开(公告)日：2015-05-12

申请号：US13615898

申请日：2012-09-14

Applicant: Robert Gregory Wagoner ,  Robert Allen Seymour

Inventor： Robert Gregory Wagoner ,  Robert Allen Seymour

IPC: F03D9/00 ,  H02M7/5387 ,  H02M7/493 ,  H02J3/38

CPC classification number: H02M7/53871 ,  H02J3/386 ,  H02M7/493 ,  Y02E10/76 ,  Y02E10/763

Abstract: Systems and methods for reducing current imbalance between parallel bridge circuits used in a power converter of a doubly fed induction generator (DFIG) system are provided. A control system can monitor the bridge current of each of the bridge circuits coupled in parallel and generate a feedback signal indicative of the difference in bridge current between the parallel bridge circuits. Command signals for controlling the bridge circuits can then be developed based on the feedback signal to reduce current imbalance between the bridge circuits. For instance, the pulse width modulation of switching devices (e.g. IGBTs) used in the bridge circuits can be modified to reduce current imbalance between the parallel bridge circuits.

Abstract translation: 提供了用于减少在双馈感应发电机（DFIG）系统的功率转换器中使用的并联桥电路之间的电流不平衡的系统和方法。 控制系统可以监视并联耦合的每个桥式电路的桥式电流，并产生一个表示并联桥式电路之间桥式电流差异的反馈信号。 然后可以基于反馈信号来开发用于控制桥接电路的命令信号，以减少桥接电路之间的电流不平衡。 例如，可以修改在桥接电路中使用的开关器件（例如IGBT）的脉冲宽度调制，以减少并联电路之间的电流不平衡。

公开(公告)号：US08867248B2

公开(公告)日：2014-10-21

申请号：US13331539

申请日：2011-12-20

Applicant: Zitao (Peter) Wang

Inventor： Zitao (Peter) Wang

IPC: H02M7/42

CPC classification number: H02M7/487 ,  Y02B10/14 ,  Y02B10/30 ,  Y02E10/56 ,  Y02E10/76

Abstract: A highly efficient transformerless inverter and a method of controlling the same. The inverter is designed for use in a distributed power generation system, such as a home having photovoltaic cells (e.g., a solar panel), wind turbines, batteries, and other sources of DC electrical power. The inverter includes four switching states including a positive current path for a positive half-cycle, a free-wheel current path for the positive half-cycle, a negative current path for a negative half-cycle, and a second free-wheel current path for the negative half-cycle. The free-wheel current paths include a reduced number of circuit components (e.g., diodes), which enables a highly efficient inversion of DC power to AC power.

Abstract translation: 一种高效无变压器逆变器及其控制方法。 逆变器设计用于分布式发电系统，例如具有光伏电池（例如，太阳能电池板），风力涡轮机，电池和其它DC电力源的家庭。 逆变器包括四个开关状态，包括用于正半周期的正电流路径，正半周期的续流电流路径，负半周期的负电流路径和第二随机电流路径 为负半周期。 续流电流路径包括减少数量的电路部件（例如，二极管），其能够将DC电力高效地反转到AC电力。

公开(公告)号：US20140139200A1

公开(公告)日：2014-05-22

申请号：US13834651

申请日：2013-03-15

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Sungchun CHO

IPC: H02M3/156

CPC classification number: H02M3/156 ,  G05F1/67 ,  H02J3/385 ,  H02M3/3376 ,  Y02E10/58 ,  Y02E10/76

Abstract: An energy storage system (ESS) and a method thereof are disclosed. The system includes a maximum power tracking control unit changing a controlled variable for maximum power point extraction in proportion to an hourly current and power slope of the power generating unit, setting the change amount of the controlled variable to be relatively large if the hourly current and power slope is out of a predetermined hourly current and power slope range, and setting the change amount of the controlled variable to be relatively small if the hourly current and power slope is within a predetermined hourly current and power slope range, and a maximum power extracting unit extracting and converting a maximum power from the power generating unit in response to a control of the maximum power tracking control unit.

Abstract translation: 公开了一种储能系统（ESS）及其方法。 该系统包括：最大功率跟踪控制单元，根据发电单元的小时电流和功率斜率成比例地改变用于最大功率点提取的受控变量，如果小时电流和小时电流将控制变量的变化量设置得相对较大， 功率斜率超过预定的小时电流和功率斜率范围，并且如果小时电流和功率斜率在预定的小​​时电流和功率斜率范围内，则将控制变量的变化量设置为相对较小，并且最大功率提取 响应于最大功率跟踪控制单元的控制，单元从发电单元提取和转换最大功率。

公开(公告)号：US08680702B2

公开(公告)日：2014-03-25

申请号：US13505956

申请日：2010-09-30

Applicant: Francesco Castelli Dezza ,  Gabriele Marchegiani ,  Fabio Pallotti ,  Gabriele Rosati

Inventor： Francesco Castelli Dezza ,  Gabriele Marchegiani ,  Fabio Pallotti ,  Gabriele Rosati

IPC: H02P9/04

CPC classification number: H02P9/48 ,  H02M7/487 ,  H02P9/305 ,  H02P21/00 ,  H02P2101/15 ,  Y02E10/76

Abstract: A control system (50, 100) is for wind power plants including aerogenerators (10) provided with DC modular converters (40). The control system (50, 100) includes devices for receiving at least a voltage signal coming from a DC medium voltage line (MTDC) electrically connected to the converters (40) and a mechanical torque signal (CRIF) produced by the aerogenerators (10) and controls AC-DC conversion modules (40a′-40a″″) of the plant. The modules have electronic devices driven by impressed voltage and producing on their outputs a respective partial continuous voltage (Vdci). For each aerogenerator (10) there are secondary control stages (100) and a single main control stage (50). Each of the secondary control stages (100) supplies control signals to a respective AC-DC conversion module (40a′-40a″″) and is designed to keep the partial continuous voltage (Vdci) at a constant value.

Abstract translation: 控制系统（50,100）用于包括设有DC模块转换器（40）的风力发电机（10）的风力发电厂。 控制系统（50,100）包括至少用于接收来自电连接到转换器（40）的直流中压线（MTDC）的电压信号的装置和由风力发电机（10）产生的机械转矩信号（CRIF） 并控制工厂的AC-DC转换模块（40a'-40a“”）。 这些模块具有由外加电压驱动的电子器件，并在其输出端产生相应的部分连续电压（Vdci）。 对于每个风力发电机（10），存在二级控制级（100）和一个主控制级（50）。 每个次级控制级（100）将控制信号提供给相应的AC-DC转换模块（40a'-40a“”），并被设计成将部分连续电压（Vdci）保持在恒定值。

公开(公告)号：US20140078800A1

公开(公告)日：2014-03-20

申请号：US13615898

申请日：2012-09-14

Applicant: Robert Gregory Wagoner ,  Robert Allen Seymour

Inventor： Robert Gregory Wagoner ,  Robert Allen Seymour

IPC: H02M7/219

CPC classification number: H02M7/53871 ,  H02J3/386 ,  H02M7/493 ,  Y02E10/76 ,  Y02E10/763

Abstract: Systems and methods for reducing current imbalance between parallel bridge circuits used in a power converter of a doubly fed induction generator (DFIG) system are provided. A control system can monitor the bridge current of each of the bridge circuits coupled in parallel and generate a feedback signal indicative of the difference in bridge current between the parallel bridge circuits. Command signals for controlling the bridge circuits can then be developed based on the feedback signal to reduce current imbalance between the bridge circuits. For instance, the pulse width modulation of switching devices (e.g. IGBTs) used in the bridge circuits can be modified to reduce current imbalance between the parallel bridge circuits.

Abstract translation: 提供了用于减少在双馈感应发电机（DFIG）系统的功率转换器中使用的并联桥电路之间的电流不平衡的系统和方法。 控制系统可以监视并联耦合的每个桥式电路的桥式电流，并产生一个表示并联桥式电路之间桥式电流差异的反馈信号。 然后可以基于反馈信号来开发用于控制桥接电路的命令信号，以减少桥接电路之间的电流不平衡。 例如，可以修改在桥接电路中使用的开关器件（例如IGBT）的脉冲宽度调制，以减少并联电路之间的电流不平衡。

公开(公告)号：US08089785B2

公开(公告)日：2012-01-03

申请号：US12160743

申请日：2007-01-12

Applicant: Cuauhtemoc Rodriguez

Inventor： Cuauhtemoc Rodriguez

IPC: H02J3/38

CPC classification number: H02M7/4807 ,  H02M5/458 ,  H02M7/53871 ,  Y02E10/56 ,  Y02E10/76 ,  Y10S323/906

Abstract: A photovoltaic power conditioning unit for delivering power from a dc photovoltaic power source to an ac mains power supply is disclosed. The photovoltaic power conditioning unit may include a non-electrolytic energy storage capacitor, a dc-to-dc converter having an input connection coupled to an input and an output connection coupled to the energy storage capacitor. The photovoltaic power conditioning unit also may include a dc-to-ac converter having an input connection coupled to the energy storage capacitor and an output connection coupled to an output and a power injection control block configured to control an amount of power transferred from the dc-to-ac converter to the ac mains power supply based, at least in part, on an amplitude of a fluctuating sinusoidal component of a dc voltage on the non-electrolytic energy storage capacitor.

Abstract translation: 公开了一种用于将电力从直流光伏电源输送到交流电源的光伏功率调节单元。 光伏功率调节单元可以包括非电解储能电容器，具有耦合到输入的输入连接和耦合到储能电容器的输出连接的dc-dc转换器。 光伏功率调节单元还可以包括具有耦合到能量存储电容器的输入连接器和耦合到输出端的输出连接器和功率注入控制块的dc-to-ac转换器，其被配置为控制从dc 至少部分地基于非电解储能电容器上的直流电压的波动的正弦分量的振幅，对交流电源供电。

公开(公告)号：US20100277869A1

公开(公告)日：2010-11-04

申请号：US12565920

申请日：2009-09-24

Applicant: Robert Gregory Wagoner

Inventor： Robert Gregory Wagoner

IPC: H05K7/20

CPC classification number: H01F27/10 ,  F03D80/60 ,  H01F27/105 ,  H01F27/16 ,  H02M7/003 ,  Y02E10/76

Abstract: Embodiments of the invention can provide systems, methods, and apparatus for cooling a power conversion system. According to one embodiment, a system comprising a power conversion system having an electrical component with a magnetic core can be provided. The system can include a heat transfer path adjacent to a portion of the electrical component and electrically isolated from the electrical component. The system can also include a cooling medium. The cooling medium can be used in conjunction with the heat transfer path for transferring heat from the electrical component. At least in this way, a system for cooling a power conversion system can be provided that can reduce thermal effects associated with power conversion.

Abstract translation: 本发明的实施例可以提供用于冷却功率转换系统的系统，方法和装置。 根据一个实施例，可以提供包括具有带有磁芯的电气部件的电力转换系统的系统。 该系统可以包括与电气部件的一部分相邻并且与电气部件电隔离的传热路径。 该系统还可以包括冷却介质。 冷却介质可以与用于传递来自电气部件的热量的传热路径一起使用。 至少以这种方式，可以提供用于冷却功率转换系统的系统，其可以减少与功率转换相关联的热效应。

公开(公告)号：US20100118568A1

公开(公告)日：2010-05-13

申请号：US12558893

申请日：2009-09-14

Applicant: Lars HELLE ,  Philip Carne KJAER ,  John NIEUWENUIZEN ,  Morten LINDHOLM

Inventor： Lars HELLE ,  Philip Carne KJAER ,  John NIEUWENUIZEN ,  Morten LINDHOLM

IPC: H02M5/40

CPC classification number: H02M1/12 ,  Y02E10/76

Abstract: The present invention relates to a wind turbine facility comprising a power generator operationally connected to an AC/AC converter adapted to receive variable frequency AC-power from the power generator, and adapted to generate substantially fixed frequency AC-power. The wind turbine facility further comprises a harmonic filter system, and a grid transformer comprising a primary winding being operationally connected to the AC/AC converter, and a secondary winding adapted to be operationally connected to an associated, substantially fixed frequency AC-power supply grid. The grid transformer further comprises a tertiary winding being operationally connected to the harmonic filter in order to suppress unwanted harmonics, such as selected harmonics generated by the AC/AC converter. The turn ratio between the primary and tertiary windings is selected in such a manner that a voltage of the tertiary winding is lower than a nominal voltage level of the associated AC-power supply grid voltage.

Abstract translation: 技术领域本发明涉及一种风力涡轮机设施，包括操作地连接到AC / AC转换器的发电机，其适于从发电机接收可变频率AC电力，并且适于产生基本上固定的频率AC电力。 风力涡轮机设施还包括谐波滤波器系统和电网变压器，其包括可操作地连接到AC / AC转换器的初级绕组，以及适于可操作地连接到相关联的基本上固定的频率交流电网 。 电网变压器还包括三级绕组，其可操作地连接到谐波滤波器，以便抑制诸如由AC / AC转换器产生的所选谐波之类的不需要的谐波。 选择主绕组和第三绕组之间的匝数比，使得三次绕组的电压低于相关联的交流电网电压的额定电压电平。