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    POWER CONVERSION DEVICE
    1.
    发明公开
    POWER CONVERSION DEVICE 审中-公开

    公开(公告)号：US20240291275A1

    公开(公告)日：2024-08-29

    申请号：US18569604

    申请日：2021-06-24

    Applicant: Mitsubishi Electric Corporation

    Inventor： Kaho MUKUNOKI ,  Hiroki ISHIHARA ,  Toshiyuki FUJII

    IPC: H02J3/18 ,  H02J3/24 ,  H02J3/40

    CPC classification number: H02J3/1885 ,  H02J3/241 ,  H02J3/40

    Abstract: A power conversion device includes a power converter connected to a power storage element, and a control device. The control device includes a generator simulating unit to generate a voltage command value, and a signal generating unit to generate a control signal for the power converter based on the voltage command value. The generator simulating unit includes a first characteristics simulating unit to generate a first command value by simulating characteristics of a first synchronous generator, a second characteristics simulating unit to generate a second command value by simulating characteristics of a second synchronous generator different from the characteristics of the first synchronous generator, an adder to perform addition of the first command value and the second command value, and a voltage command generating unit to generate the voltage command value, based on an addition result of the first command value and the second command value.

    Inverter circuits for electrical machines
    5.
    发明授权
    Inverter circuits for electrical machines 有权
    电机逆变电路

    公开(公告)号：US09344001B2

    公开(公告)日：2016-05-17

    申请号：US14173095

    申请日：2014-02-05

    Applicant: Control Techniques Limited

    Inventor： Peter Eigenbrodt

    IPC: H02M1/12 ,  H02M7/42 ,  H02J3/18 ,  H02P9/08

    CPC classification number: H02M7/42 ,  H02J3/1885 ,  H02P9/08 ,  Y02E40/32

    Abstract: An inverter circuit comprises an inverter which can be configurable for controlling the supply of mains current from a grid to an electric machine in a start-up mode whereby the machine drives the prime mover for initialization. Thereafter the same inverter is reconfigurable as part of the circuit to supply reactive power to the grid when the machine is running as a generator powered by the prime mover.

    Abstract translation: 逆变器电路包括逆变器，其可以被配置为在起动模式下控制从电网到电机的电源电流的供应，由此机器驱动原动机进行初始化。 此后，当机器作为由原动机供电的发电机运行时，相同的逆变器可重新配置为电路的一部分，以向电网提供无功功率。

    METHOD FOR CONTROLLING A WIND TURBINE DURING AN ASYMMETRICAL GRID FAULT AND A WIND TURBINE
    6.
    发明申请
    METHOD FOR CONTROLLING A WIND TURBINE DURING AN ASYMMETRICAL GRID FAULT AND A WIND TURBINE 有权
    在不对称网格故障和风力涡轮机中控制风力涡轮机的方法

    公开(公告)号：US20150365031A1

    公开(公告)日：2015-12-17

    申请号：US14720510

    申请日：2015-05-22

    Applicant: Nordex Energy GmbH

    Inventor： Christian Wessels

    IPC: H02P9/00 ,  H02J3/18

    CPC classification number: H02P9/007 ,  F03D9/00 ,  H02J3/18 ,  H02J3/1885 ,  H02P23/26 ,  H02P2101/15 ,  Y02E10/763 ,  Y02E40/30

    Abstract: The invention is directed to a method for controlling a wind turbine connected to a three-phase electrical supply grid during an asymmetrical grid fault. The method is configured for wind turbines with a doubly-fed induction generator. The reactive current to be fed into the electrical supply grid in the negative phase-sequence system is generated by the line-side and the rotor-side converter in a coordinated manner and depends on the line voltage. The reactive current to be fed into the electrical supply grid is distributed among the rotor-side and line-side converters. As a result, even in the case of severely asymmetrical grid faults, the reactive current to be fed into the electrical supply grid can be provided and excessive loading of the rotor-side converter can be prevented using simple means. The invention is also directed to a wind turbine for performing the above method.

    Abstract translation: 本发明涉及一种用于控制在不对称电网故障期间连接到三相电网的风力涡轮机的方法。 该方法被配置为具有双馈感应发电机的风力涡轮机。 在负相序系统中馈送到电网的无功电流由线路侧和转子侧转换器以协调的方式产生，并且取决于线路电压。 馈送到电网的无功电流分布在转子侧和线路侧转换器之间。 结果，即使在严重不对称的电网故障的情况下，也可以提供馈送到电网的无功电流，并且可以使用简单的手段防止转子侧转换器的过载。 本发明还涉及一种用于执行上述方法的风力涡轮机。

    METHOD AND CONTROLLER FOR CONTINUOUSLY OPERATING A PLURALITY OF ELECTRIC ENERGY GENERATING MACHINES DURING A HIGH VOLTAGE CONDITION
    7.
    发明申请
    METHOD AND CONTROLLER FOR CONTINUOUSLY OPERATING A PLURALITY OF ELECTRIC ENERGY GENERATING MACHINES DURING A HIGH VOLTAGE CONDITION 有权
    在高电压条件下连续运行多种电力发电机的方法和控制器

    公开(公告)号：US20150249338A1

    公开(公告)日：2015-09-03

    申请号：US14427779

    申请日：2013-04-29

    Applicant: SIEMENS AKTIENGESELLSCHAFT

    Inventor： Robert J. Nelson ,  Najlae M. Yazghi ,  William F. Clark

    IPC: H02J4/00

    CPC classification number: H02J4/00 ,  H02J3/1885 ,  H02J3/382 ,  H02J3/383 ,  H02J3/386 ,  Y02E10/563 ,  Y02E10/763 ,  Y02E40/32 ,  Y10T307/718

    Abstract: A method and a controller for continuously operating a plurality of electric energy generating machines during a high voltage condition at a point of common coupling of the plurality of electric energy generating machines are provided herein. The method includes a) sensing a voltage level at the point of common coupling exceeding a permitted voltage level; b) curtailing an active power output of the plurality of electric energy generating machines such that a reactive capability of the plurality of electric energy generating machines is increased; c) establishing a set point of an electric quantity being present at the point of common coupling such that a reactive electric component providable by the electric energy generating machines is increased; and d) controlling an electric energy generating machine based on the set point of the electric quantity such that the high voltage condition at common coupling is at least partially remedied.

    Abstract translation: 本文提供了一种用于在多电能生成机器的公共耦合点的高电压条件下连续操作多个电能发生机的方法和控制器。 该方法包括：a）检测超过允许电压电平的公共耦合点处的电压电平; b）减少所述多个电能发电机的有功功率输出，使得所述多个电能发电机的无功能力增加; c）建立在公共耦合点处存在的电量的设定点，使得由电能发电机提供的无功电气分量增加; 以及d）基于所述电量的设定点来控制电能发电机，使得在共同耦合时的高电压条件至少部分得到补救。

    WIND FARM WITH FAST LOCAL REACTIVE POWER CONTROL
    8.
    发明申请
    WIND FARM WITH FAST LOCAL REACTIVE POWER CONTROL 有权
    具有快速本地反应动力控制的风力农场

    公开(公告)号：US20150088326A1

    公开(公告)日：2015-03-26

    申请号：US14397441

    申请日：2013-04-29

    Applicant: Senvion SE

    Inventor： Jens Fortmann

    IPC: F03D7/04 ,  G05B15/02

    CPC classification number: F03D7/048 ,  F03D7/043 ,  F05B2270/337 ,  G05B15/02 ,  H02J3/1885 ,  H02J3/386 ,  Y02E10/723 ,  Y02E10/763 ,  Y02E40/32

    Abstract: Wind farm comprising a farm master (1) and a plurality of wind energy installations (4). The farm master (1) has a controller (15) with an input for a control parameter for power supplied to a grid and transmits desired value specifications to a local controller (5) of the wind energy installations (4). According to the invention, the local controller (5) has dual structure and comprises a desired value channel (6), to which the desired value specification is applied by the farm master (1) and which is designed to output a stationary reactive power desired value, and a responsive channel (7) comprising an autonomous controller (75), to which no desired value specification is applied by the farm master (1) and to which an actual voltage of the particular wind energy installation (4) is applied via a washout filter (71). The autonomous controller (75) with the washout filter (71) enables a fast and dependent response to transient disturbances, in particular voltage spikes and voltage dips as a result of a short circuit. The individual wind energy installation and the wind farm as a whole therefore gain a behaviour which is identical to a synchronous generator and is very favourable for grid stability in the event of voltage disturbances.

    Abstract translation: 风电场包括农场主（1）和多个风能设备（4）。 农场主（1）具有控制器（15），其具有用于供电到电网的功率的控制参数的输入，并将期望的值规格发送到风能设备（4）的本地控制器（5）。 根据本发明，本地控制器（5）具有双重结构，并且包括期望值通道（6），农场主（1）应用期望值规范，并且被设计成输出所需的固定无功功率 值和响应通道（7），其包括自主控制器（75），农场主机（1）不对其施加期望的值规范，并且经由所述自动控制器（75）施加特定风能设备（4）的实际电压 冲洗过滤器（71）。 具有冲洗滤波器（71）的自主控制器（75）能够对短路造成的瞬态干扰，特别是电压尖峰和电压下降产生快速和依赖的响应。 因此，单个风力发电装置和风电场整体上获得与同步发电机相同的行为，并且在电压扰动的情况下非常有利于电网稳定性。

    Wind turbine control method
    9.
    发明授权
    Wind turbine control method 有权
    风力发电机组控制方法

    公开(公告)号：US08896142B2

    公开(公告)日：2014-11-25

    申请号：US12996046

    申请日：2009-06-03

    Applicant: Teresa Arlaban Gabeiras ,  Oscar Alonso Sadaba ,  Ana Huarte Amezqueta ,  Alberto García Barace ,  José Miguel García Sayes ,  Ricardo Royo García ,  Stephen Tonks ,  Miguel Núñez Polo

    Inventor： Teresa Arlaban Gabeiras ,  Oscar Alonso Sadaba ,  Ana Huarte Amezqueta ,  Alberto García Barace ,  José Miguel García Sayes ,  Ricardo Royo García ,  Stephen Tonks ,  Miguel Núñez Polo

    IPC: F03D9/00 ,  H02P9/04

    CPC classification number: H02J3/386 ,  F03D9/257 ,  F05B2270/1033 ,  H02J3/1885 ,  H02P9/42 ,  H02P9/48 ,  H02P2101/15 ,  Y02E10/72 ,  Y02E10/763 ,  Y02E40/32

    Abstract: The present disclosure relates to a method for controlling a wind turbine of the type including a rotor, a generator, a frequency converter, a control unit and means for connecting to a wind farm grid, using means for receiving a local voltage reference value (VREF) and a regulator (1) which calculates the reactive power to be generated (QT) as a function of the voltage error (ΔV), such that it can be operated over the entire voltage range. The system also includes: at least one saturator element (2, 6, 7) in which the reactive power to be generated is limited, whereby the limits (Q—MAX, Q—MIN, QC—MAX, QC—MIN, QS—MAX, QS—MIN) are calculated dynamically as a function of the voltage, this block outputting a reference reactive power of the wind turbine (Q—REF, QC—REF, Qs—REF); and an element (3) for calculating the actual limit of the active power (PMAX) as a function of the pre-limited reactive power (Q—REF, Qs—REF) and the apparent power available at that moment.

    Abstract translation: 本公开涉及一种用于控制类型的风力涡轮机的方法，包括转子，发电机，变频器，控制单元和用于连接到风电场电网的装置，使用用于接收局部电压参考值（VREF）的装置 ）和调节器（1），其计算作为电压误差（＆Dgr; V）的函数的要产生的无功功率（QT），使得其可以在整个电压范围内操作。 该系统还包括：至少一个饱和器元件（2,6,7），其中产生的无功功率被限制，由此限制（Q-MAX，Q-MIN，QC-MAX，QC-MIN，QS- MAX，QS-MIN）作为电压的函数动态地计算，该块输出风力涡轮机的参考无功功率（Q-REF，QC-REF，Qs-REF）; 以及用于根据预限制无功功率（Q-REF，Qs-REF）和当时可用的视在功率计算有功功率（PMAX）的实际极限的元件（3）。

    Decoupling controller for power systems
    10.
    发明授权
    Decoupling controller for power systems 有权
    电力系统的去耦控制器

    公开(公告)号：US08498752B2

    公开(公告)日：2013-07-30

    申请号：US13200901

    申请日：2011-10-04

    Applicant: Charles H. Wells

    Inventor： Charles H. Wells

    IPC: G05D17/00

    CPC classification number: H02J3/381 ,  H02J3/1885 ,  H02J3/386 ,  Y02E10/763 ,  Y02E40/32 ,  Y10T307/724

    Abstract: A power system controller using a 2×2 decoupling controller, a model reference, and feedback with delay. Embodiments provide control of microgrid frequency F and voltage V. In addition, this technique can also be used to control the real and reactive power delivered from the microgrid to the connected macrogrid. The control engineering approach is the same in both cases, but the roles of the four variables involved are reversed.

    Abstract translation: 使用2×2去耦控制器的电力系统控制器，模型参考和具有延迟的反馈。 实施例提供了对微电网频率F和电压V的控制。此外，该技术还可以用于控制从微电网传递到连接的宏栅的实际和无功功率。 在这两种情况下，控制工程方法是相同的，但涉及的四个变量的作用是相反的。

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