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    Control method for power converters with inverter blocks with silicon carbide MOSFETs
    61.
    发明授权
    Control method for power converters with inverter blocks with silicon carbide MOSFETs 有权

    公开(公告)号：US10148205B2

    公开(公告)日：2018-12-04

    申请号：US15422604

    申请日：2017-02-02

    Applicant: General Electric Company

    Inventor： Robert Gregory Wagoner ,  Dong Dong ,  Govardhan Ganireddy ,  David Smith

    IPC: H02M7/53862 ,  H02M7/5387 ,  H02P9/00 ,  H02M3/335 ,  H02M5/42 ,  H02M1/084

    Abstract: Systems and methods for operating a power converter with a plurality of inverter blocks with silicon carbide MOSFETs are provided. A converter can include a plurality of inverter blocks. Each inverter block can include a plurality of switching devices. The plurality of switching devices can include one or more silicon carbide MOSFETs. A control method can include providing, by a control system, one or more gating commands to a first inverter block in the plurality of inverter blocks. The control method can further include implementing, by the control system, a gating command delay to generate a first delayed gating command based at least in part on the one or more gating commands. The control method can further include providing, by the control system, the first delayed gating command to a second inverter block in the plurality of inverter blocks.

    Electrical Power Systems and Methods Using Distortion Filters
    63.
    发明申请
    Electrical Power Systems and Methods Using Distortion Filters 审中-公开

    公开(公告)号：US20180323620A1

    公开(公告)日：2018-11-08

    申请号：US15588902

    申请日：2017-05-08

    Applicant: General Electric Company

    Inventor： Govardhan Ganireddy ,  Saurabh Shukla ,  Rajni Burra ,  Robert Gregory Wagoner ,  Anthony Michael Klodowski ,  Yashomani Kolhatkar

    IPC: H02J3/38 ,  H02M5/04 ,  H02J3/01

    Abstract: An electrical power system includes a cluster of electrical power subsystems, each of the electrical power subsystems including a power converter electrically coupled to a generator having a generator rotor and a generator stator. Each of the electrical power subsystems defines a stator power path and a converter power path for providing power to the power grid. The converter power path includes a partial power transformer. The electrical power system further includes a subsystem breaker configured with each of the electrical power subsystems, and a cluster transformer for connecting each cluster of electrical power subsystems to the power grid. The electrical power system further includes a cluster power path extending between each subsystem breaker and the cluster transformer, and a distortion filter electrically coupled to the cluster transformer. The distortion filter reduces harmonics in current flowing from the electrical power subsystems to the cluster transformer.

    Method and system for controlling switching frequency of a doubly-fed induction generator (DFIG)
    68.
    发明授权
    Method and system for controlling switching frequency of a doubly-fed induction generator (DFIG) 有权
    用于控制双馈感应发电机（DFIG）的开关频率的方法和系统

    公开(公告)号：US09537437B2

    公开(公告)日：2017-01-03

    申请号：US13783449

    申请日：2013-03-04

    Applicant: General Electric Company

    Inventor： Robert Gregory Wagoner ,  David Smith

    IPC: H02P9/00 ,  H02J3/38

    CPC classification number: H02P9/007 ,  H02J3/386 ,  Y02E10/763

    Abstract: The present subject matter is directed to systems and methods for controlling variable speed generators, particularly converters associated with doubly-fed induction generators (DFIG) to permit use of harmonic attenuating filters that are generally smaller and less costly than previous similar filters. The subject matter provides for controlling line-side and rotor-side converters in such a manner that the frequencies generated by the converters are interleaved in a manner that the filters see a higher switching frequency and thus may be designed based on those higher frequencies, thereby requiring smaller and less expensive components.

    Abstract translation: 本主题涉及用于控制变速发电机的系统和方法，特别是与双馈感应发电机（DFIG）相关联的转换器，以允许使用通常比先前的类似滤波器更小且更便宜的谐波衰减滤波器。 主题提供了以这样的方式控制线路侧转子和转子侧转换器，使得由转换器产生的频率以滤波器看到更高的开关频率并因此可以基于那些较高频率被设计的方式进行交织，由此 需要更小和更便宜的组件。

    Current balance control for non-interleaved parallel bridge circuits in power converter
    69.
    发明授权
    Current balance control for non-interleaved parallel bridge circuits in power converter 有权
    电力转换器中非交错并联桥电路的电流平衡控制

    公开(公告)号：US09343991B2

    公开(公告)日：2016-05-17

    申请号：US13744975

    申请日：2013-01-18

    Applicant: General Electric Company

    Inventor： Robert Gregory Wagoner ,  Anthony Michael Klodowski

    IPC: H02M5/458 ,  H02M5/42 ,  H02M5/293 ,  H02M7/493 ,  H02P9/00 ,  H02P101/15

    CPC classification number: H02M5/42 ,  H02M5/293 ,  H02M5/4585 ,  H02M7/493 ,  H02P9/007 ,  H02P2101/15 ,  H02P2207/073

    Abstract: Systems and methods for reducing current imbalance between parallel bridge circuits used in a power converter of a power generation system, such as a wind driven doubly fed induction generator (DFIG) system, are provided. The power converter can include a plurality of bridge circuits coupled in parallel to increase the output power capability of the system. Each of the bridge circuits can include a pair of switching elements, such as insulated gate bipolar transistors (IGBTs), coupled in series with one another. The switching elements of the parallel bridge circuits can be controlled, for instance, using control commands (e.g. pulse width modulation commands) according to a substantially non-interleaved switching pattern. The timing of the control commands according to the substantially non-interleaved switching pattern can be adjusted to reduce current imbalance between the parallel bridge circuits.

    Abstract translation: 提供了用于减少在诸如风力驱动双馈感应发电机（DFIG）系统的发电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。 功率转换器可以包括并联耦合的多个桥式电路，以增加系统的输出功率能力。 每个桥接电路可以包括彼此串联耦合的一对开关元件，例如绝缘栅双极晶体管（IGBT）。 并联电路电路的开关元件可以例如根据基本上非交错的开关模式使用控制命令（例如，脉冲宽度调制命令）进行控制。 可以调整根据基本上非交织的开关模式的控制命令的定时，以减少并联桥电路之间的电流不平衡。

    SYSTEM AND METHOD FOR CONTROLLING A POWER GENERATION SYSTEM CONNECTED TO A WEAK GRID
    70.
    发明申请
    SYSTEM AND METHOD FOR CONTROLLING A POWER GENERATION SYSTEM CONNECTED TO A WEAK GRID 有权
    用于控制连接到弱网格的发电系统的系统和方法

    公开(公告)号：US20150349688A1

    公开(公告)日：2015-12-03

    申请号：US14663490

    申请日：2015-03-20

    Applicant: General Electric Company

    Inventor： Robert Gregory Wagoner ,  David Smith ,  Yong Xu

    IPC: H02P9/00 ,  F03D9/00 ,  H02P9/30

    CPC classification number: H02P9/007 ,  F03D9/255 ,  H02P9/00 ,  H02P23/26 ,  Y02E10/725

    Abstract: A method for controlling a power generation system connected to a weak grid may generally include operating a power converter of the system so as to produce current at or above a power factor threshold associated with a power factor operating requirement for the system, detecting that a generator speed of the system has increased over a period of time, detecting that a local reference voltage for the system has decreased within the same period of time over which the generator speed has increased and adjusting the operation of the power converter to produce current at a reduced power factor below the power factor threshold so as to increase a real power output of the system.

    Abstract translation: 用于控制连接到弱电网的发电系统的方法通常可以包括操作系统的功率转换器，以产生等于或高于与系统的功率因数运行要求相关联的功率因数阈值的电流，检测发电机 系统的速度在一段时间内增加，检测到系统的局部参考电压在发电机速度增加的相同时间内已经减少，并且调节功率转换器的工作以产生电流减少 功率因数低于功率因数阈值，以增加系统的实际功率输出。

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