Methods and Systems for Operating a Two-Stage Power Converter
    41.
    发明申请
    Methods and Systems for Operating a Two-Stage Power Converter 有权
    用于操作两级功率转换器的方法和系统

    公开(公告)号:US20120062044A1

    公开(公告)日:2012-03-15

    申请号:US12974444

    申请日:2010-12-21

    IPC分类号: H02J3/34

    摘要: A power conversion system for providing power to an electrical grid is described. The system includes a boost converter coupled to a photovoltaic (PV) array and configured to control a PV array voltage. The system also includes an inverter coupled to the boost converter by at least one conductor and configured to regulate a voltage drop across the at least one conductor. The system also includes a system controller configured to control operation of the boost converter and the inverter.

    摘要翻译: 描述用于向电网提供电力的电力转换系统。 该系统包括耦合到光伏(PV)阵列并被配置为控制PV阵列电压的升压转换器。 该系统还包括通过至少一个导体耦合到升压转换器并被配置为调节穿过至少一个导体的电压降的逆变器。 该系统还包括被配置为控制升压转换器和逆变器的操作的系统控制器。

    ELECTRICAL SYSTEM AND CONTROL METHOD
    42.
    发明申请
    ELECTRICAL SYSTEM AND CONTROL METHOD 有权
    电气系统与控制方法

    公开(公告)号:US20100156192A1

    公开(公告)日:2010-06-24

    申请号:US12341862

    申请日:2008-12-22

    IPC分类号: H02M7/48

    摘要: A power generation system comprises at least two electrical systems connected at an electrical connection point. Each electrical system comprises a power conversion system comprising a converter including a plurality of switches for converting direct current power into alternating current power. The power generation system comprises a control system including at least two pulse width modulation (PWM) modulators, each PWM modulator for obtaining a fundamental waveform and a carrier signal, using the fundamental and carrier signals to generate a PWM pattern, and for providing the PWM pattern to a respective converter for driving the switches of the respective converter. The control system is configured to interleave carrier signals, fundamental waveforms, or a combination of carrier signals and fundamental waveforms of the at least two electrical systems to generate interleaved PWM patterns respectively for the at least two converters.

    摘要翻译: 发电系统包括在电连接点处连接的至少两个电气系统。 每个电气系统包括电力转换系统,其包括转换器,该转换器包括用于将直流电力转换为交流电力的多个开关。 发电系统包括一个包括至少两个脉冲宽度调制(PWM)调制器的控制系统,每个PWM调制器用于获得基波和载波信号,使用基波和载波信号产生PWM模式,并提供PWM 模式到用于驱动各个转换器的开关的相应转换器。 控制系统被配置为交替载波信号,基波或者载波信号和至少两个电气系统的基波形的组合,以分别为至少两个转换器产生交错PWM模式。

    Processing tantalum capacitors on assembled PWAs to yield low failure rate
    44.
    发明授权
    Processing tantalum capacitors on assembled PWAs to yield low failure rate 有权
    在组装的PWA上处理钽电容器以产生低故障率

    公开(公告)号:US07609072B2

    公开(公告)日:2009-10-27

    申请号:US11730995

    申请日:2007-04-05

    IPC分类号: G01R27/26 G01R31/12

    CPC分类号: G01R31/016

    摘要: A method of conditioning tantalum capacitors on printed wire assemblies is disclosed. According to the method, each of the capacitors on an assembly is subjected to the same conditioning level during testing. To condition the tantalum capacitors, surge currents are induced in the capacitors in a controlled manner as a way of aging the capacitors so that they can be used without de-rating rating with low failure rates. The level of voltage, timing and current levels are set by circuitry used to perform the testing. The same circuits that are used with the capacitors in a system application are also used for the tantalum capacitor test circuit during the conditioning process.

    摘要翻译: 公开了一种在印刷线组件上调节钽电容器的方法。 根据该方法,组件中的每个电容器在测试期间受到相同的调节水平。 为了调节钽电容器,电容器中的浪涌电流以受控的方式作为老化电容器的方式引起,使得它们可以在没有降低额定值且低故障率的情况下使用。 电压,定时和电流水平由用于执行测试的电路设置。 在系统应用中与电容器一起使用的相同电路在调节过程中也用于钽电容测试电路。

    System and method for overvoltage protection
    45.
    发明授权
    System and method for overvoltage protection 有权
    过电压保护系统及方法

    公开(公告)号:US09312682B2

    公开(公告)日:2016-04-12

    申请号:US13470564

    申请日:2012-05-14

    IPC分类号: H02H3/20 H02H7/06 H02H9/04

    摘要: In one aspect, the present subject matter discloses a method for overvoltage protection of an electrical system. The method may generally include detecting an overvoltage condition on an electrical system; and switching on, in response to the detected overvoltage condition, an impedance connected to the electrical system, wherein the impedance clamps voltage on the electrical system.

    摘要翻译: 在一个方面,本主题公开了一种用于电气系统的过电压保护的方法。 该方法通常可以包括检测电气系统上的过电压状况; 并且响应于检测到的过电压条件接通连接到电气系统的阻抗,其中阻抗钳位电气系统上的电压。

    METHOD AND SYSTEMS FOR OPERATING A WIND TURBINE
    48.
    发明申请
    METHOD AND SYSTEMS FOR OPERATING A WIND TURBINE 有权
    风力发电机运行方法与系统

    公开(公告)号:US20130234435A1

    公开(公告)日:2013-09-12

    申请号:US13416541

    申请日:2012-03-09

    IPC分类号: H02P9/04 H05K13/08

    摘要: A method and system for reducing a disturbance of an electric grid signal in a wind turbine is provided. The method includes providing a generator for the wind turbine system, and, coupling a power converter to the generator, the power converter. The power converter is configured to monitor at least one of a negative sequence component and a positive sequence component of a signal transmitted from an electric grid, determine if a disturbance exists based on the monitored signal, determine at least a portion of a magnitude of the negative sequence component of the signal, and, orient a voltage of the signal based on the determined magnitude negative sequence component to modify the instantaneous power flow through the power converter.

    摘要翻译: 提供了一种用于减少风力涡轮机中的电网信号的干扰的方法和系统。 该方法包括提供用于风力涡轮机系统的发电机,以及将功率转换器耦合到发电机功率转换器。 功率转换器被配置为监测从电网发送的信号的负序分量和正序分量中的至少一个,基于所监测的信号来确定是否存在干扰,确定至少一部分幅度 信号的负序分量,并且基于确定的幅度负序分量来定向信号的电压,以修改通过功率转换器的瞬时功率流。

    Methods and systems for operating a two-stage power converter
    49.
    发明授权
    Methods and systems for operating a two-stage power converter 有权
    用于操作两级电源转换器的方法和系统

    公开(公告)号:US08259479B2

    公开(公告)日:2012-09-04

    申请号:US12974444

    申请日:2010-12-21

    IPC分类号: H02M7/537

    摘要: A power conversion system for providing power to an electrical grid is described. The system includes a boost converter coupled to a photovoltaic (PV) array and configured to control a PV array voltage. The system also includes an inverter coupled to the boost converter by at least one conductor and configured to regulate a voltage drop across the at least one conductor. The system also includes a system controller configured to control operation of the boost converter and the inverter.

    摘要翻译: 描述用于向电网提供电力的电力转换系统。 该系统包括耦合到光伏(PV)阵列并被配置为控制PV阵列电压的升压转换器。 该系统还包括通过至少一个导体耦合到升压转换器并被配置为调节穿过至少一个导体的电压降的逆变器。 该系统还包括被配置为控制升压转换器和逆变器的操作的系统控制器。

    Cast-coil inductor
    50.
    发明授权
    Cast-coil inductor 有权
    浇注线圈电感

    公开(公告)号:US08089334B2

    公开(公告)日:2012-01-03

    申请号:US12366534

    申请日:2009-02-05

    IPC分类号: H01F27/24

    摘要: An inductor device is described. The inductor device includes a core comprising two core sections, at least one gap defined between the two core sections, and at least one cast coil and fringe shield assembly. The at least one cast coil and fringe shield assembly includes a conductor winding and a fringe shield sealed within an insulator. The at least one cast coil and fringe shield assembly is configured to at least partially surround portions of the two core sections.

    摘要翻译: 描述电感器件。 电感器件包括一个芯子,它包括两个芯部分,两个芯部分之间限定的至少一个间隙,以及至少一个铸造线圈和边缘屏蔽组件。 所述至少一个铸造线圈和边缘屏蔽组件包括密封在绝缘体内的导体绕组和边缘屏蔽。 至少一个铸造线圈和边缘屏蔽组件构造成至少部分地围绕两个芯部分的部分。