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    Motor driving device
    93.
    发明授权
    Motor driving device 有权

    公开(公告)号：US09787084B2

    公开(公告)日：2017-10-10

    申请号：US15183881

    申请日：2016-06-16

    Applicant: FANUC CORPORATION

    Inventor： Tomokazu Yoshida

    IPC: H02P27/04 ,  H02H7/12 ,  H02M7/06

    CPC classification number: H02H7/1216 ,  H02M7/062 ,  H02P2201/03

    Abstract: A motor driving device includes: a converter that converts AC power into DC power; a DC link capacitor provided for the DC link; an inverter that converts DC power into AC power for a motor; an initial charging circuit that charges the DC link capacitor; a potential difference determination unit that determines a potential difference between both ends of the initial charging circuit; a direct current detecting unit that detects direct current supplied to the initial charging circuit; an alternating current detecting unit that detects alternating current supplied to a motor; and an abnormality determination unit that determines that abnormal heat generation occurs in the initial charging circuit when the alternating current detecting unit detects alternating current and the direct current detecting unit detects direct current, in a case in which a potential difference occurs between both of the ends of the initial charging circuit.

    FLUID EXTRACTION SYSTEM AND RELATED METHOD OF CONTROLLING OPERATING SPEEDS OF ELECTRIC MACHINES THEREOF
    94.
    发明申请
    FLUID EXTRACTION SYSTEM AND RELATED METHOD OF CONTROLLING OPERATING SPEEDS OF ELECTRIC MACHINES THEREOF 审中-公开
    流体萃取系统及其控制电机运行速度的相关方法

    公开(公告)号：US20170074081A1

    公开(公告)日：2017-03-16

    申请号：US14939335

    申请日：2015-11-12

    Applicant: General Electric Company

    Inventor： David Allan Torrey ,  Nathaniel Benedict Hawes

    IPC: E21B43/12 ,  F04D13/08

    CPC classification number: F04D13/08 ,  B01D17/0217 ,  B01D19/0057 ,  B01D21/267 ,  B01D45/12 ,  E21B43/128 ,  F04D13/10 ,  H02P5/74 ,  H02P6/15 ,  H02P6/16 ,  H02P2201/03

    Abstract: A fluid extraction system is presented. The fluid extraction system includes a direct current (DC) bus and a plurality of fluid extraction sub-systems configured to be electrically coupled to the DC-bus. At least one fluid extraction sub-system includes an electric machine configured to aid in the extraction of a fluid from a well. The electric machine includes a plurality of phase windings and a rotor. The at least one fluid extraction sub-system further includes a control sub-system to control a rotational speed of the rotor by selectively controlling a supply of a phase current to the plurality of phase windings such that the rotational speed of the rotor of the electric machine is different from rotational speed of a rotor of another electric machine in at least one of other fluid extraction sub-systems. Related method for controlling rotational speeds of electric machines is also presented.

    Abstract translation: 提出了一种流体萃取系统。 流体提取系统包括直流（DC）总线和被配置为电耦合到DC总线的多个流体抽出子系统。 至少一个流体提取子系统包括构造成有助于从井中提取流体的电机。 电机包括多个相绕组和转子。 所述至少一个流体提取子系统还包括控制子系统，以通过选择性地控制向所述多个相绕组的相电流的供应来控制所述转子的转速，使得所述电转子的转子的转速 机器不同于至少一个其它流体提取子系统中另一电机的转子的转速。 还提出了用于控制电机转速的相关方法。

    AC MOTOR DRIVE DEVICE
    96.
    发明申请
    AC MOTOR DRIVE DEVICE 有权
    交流电机驱动装置

    公开(公告)号：US20130307462A1

    公开(公告)日：2013-11-21

    申请号：US13981473

    申请日：2011-03-28

    Applicant: Manabu Ohashi ,  Kazuya Nakamura

    Inventor： Manabu Ohashi ,  Kazuya Nakamura

    IPC: H02P27/06

    CPC classification number: H02P27/06 ,  H02M1/32 ,  H02P3/22 ,  H02P2201/03 ,  H02P2201/07 ,  Y02P80/116

    Abstract: A circuit disconnection element that can open or short-circuit between a power storage element and a step-up/step-down bidirectional chopper circuit is provided in a power storage system, thereby preventing a self-discharge state in a process of charging. Furthermore, at the time of occurrence of an abnormality, the power storage element is detached from other devices including the step-up/step-down bidirectional chopper circuit. Accordingly, an energy loss of the power storage element at the time of power regeneration can be reduced to improve the energy use efficiency. Further, breakage influences such that the power storage element causes breakage in other devices at the time of occurrence of the abnormality can be prevented, thereby enabling to obtain an AC motor drive device having mounted therein a highly safe power storage system.

    Abstract translation: 在蓄电系统中设置有能够在蓄电元件与升压/降压双向斩波电路之间断开或短路的电路断路元件，从而防止充电过程中的自放电状态。 此外，在异常发生时，蓄电元件与包括升压/降压双向斩波电路的其他装置分离。 因此，可以降低功率再生时的蓄电元件的能量损失，提高能量利用效率。 此外，可以防止在发生异常时蓄电元件导致其他装置中的断线的破损，从而能够获得安装有高度安全的蓄电系统的交流电动机驱动装置。

    Variable speed drive with integral bypass contactor
    97.
    发明授权
    Variable speed drive with integral bypass contactor 有权
    带集成旁路接触器的变速驱动器

    公开(公告)号：US08014110B2

    公开(公告)日：2011-09-06

    申请号：US11932054

    申请日：2007-10-31

    Applicant: Harold R. Schnetzka ,  Ivan Jadric

    Inventor： Harold R. Schnetzka ,  Ivan Jadric

    IPC: F21V7/04 ,  H02H5/04 ,  H02H7/08

    CPC classification number: H02M1/12 ,  F25B49/025 ,  F25B2600/021 ,  H02M2001/123 ,  H02P27/08 ,  H02P29/50 ,  H02P2201/03 ,  H03L7/093 ,  H03L7/095 ,  H05K7/20936 ,  Y02B30/741

    Abstract: Systems and methods for operating a variable speed drive to receive an input AC power at a fixed AC input voltage and frequency and provide an output AC power at a variable voltage and variable frequency. The variable speed drive includes a converter stage to convert the input AC voltage to a boosted DC voltage, a DC link connected to the converter stage to filter and store the boosted DC voltage from the converter stage; and an inverter stage to convert the boosted DC voltage into AC power with variable voltage and the variable frequency. An integral bypass contactor is connected in parallel with the VSD between the AC power source and the AC output power. The integral bypass contactor is arranged to bypass the VSD when the VSD output frequency and voltage are approximately equal with the AC input voltage and frequency.

    Abstract translation: 用于操作变速驱动器以固定的AC输入电压和频率接收输入AC电力的系统和方法，并以可变电压和可变频率提供输出AC电力。 变速驱动器包括转换器级，用于将输入交流电压转换为升压直流电压;连接到转换器级的直流链路，用于对来自转换器级的升压直流电压进行滤波和存储; 以及将升压的直流电压转换为具有可变电压和可变频率的交流电的逆变器级。 一体式旁路接触器与交流电源和交流输出电源之间的VSD并联连接。 当VSD输出频率和电压与交流输入电压和频率近似相等时，集成旁路接触器被布置为绕过VSD。

    System and method to extend synchronous operation of an active converter in a variable speed drive
    98.
    发明授权
    System and method to extend synchronous operation of an active converter in a variable speed drive 有权
    扩展变频器中有源转换器的同步运行的系统和方法

    公开(公告)号：US07764041B2

    公开(公告)日：2010-07-27

    申请号：US11932280

    申请日：2007-10-31

    Applicant: Harold R. Schnetzka ,  Shreesha Adiga Manoor

    Inventor： Harold R. Schnetzka ,  Shreesha Adiga Manoor

    IPC: H02P27/04

    CPC classification number: H02M1/12 ,  F25B49/025 ,  F25B2600/021 ,  H02M2001/123 ,  H02P27/08 ,  H02P29/50 ,  H02P2201/03 ,  H03L7/093 ,  H03L7/095 ,  H05K7/20936 ,  Y02B30/741

    Abstract: Systems and methods for synchronous operation of variable speed drives having active converters include extending the synchronous operation of an active converter to the AC mains voltage during complete line dropout. A phase angle control circuit includes a squaring amplifier, a first phase-lock loop circuit associated and a second phase-lock loop circuit. The squaring amplifier receives the AC power source and outputs a rectangular output signal to a pair of phase lock loop (PLL) circuits. The first PLL circuit with a first lag-lead filter is configured with a high cutoff frequency to provide the converter stage with a phase angle parameter; and the second phase-lock loop circuit including a second lag-lead filter configured to have a low cutoff frequency to provide the lag-lead filter the capability of storing the phase angle of the mains voltage during mains interruption.

    Abstract translation: 具有有源转换器的变速驱动器的同步操作的系统和方法包括在完整的线路断开期间将有源转换器的同步操作扩展到AC电源电压。 相位角控制电路包括平方放大器，相关的第一锁相环电路和第二锁相环电路。 平方放大器接收交流电源，并向一对锁相环（PLL）电路输出矩形输出信号。 具有第一滞后引线滤波器的第一PLL电路配置有高截止频率，以向转换器级提供相位角参数; 并且所述第二锁相环电路包括被配置为具有低截止频率的第二滞后引线滤波器，以提供所述滞后引线滤波器在电源中断期间存储所述电源电压的相位角的能力。

    CONTROL APPARATUS
    99.
    发明申请
    CONTROL APPARATUS 有权
    控制装置

    公开(公告)号：US20090103336A1

    公开(公告)日：2009-04-23

    申请号：US12294183

    申请日：2007-03-27

    Applicant: Nobuhiro Nakamura

    Inventor： Nobuhiro Nakamura

    IPC: H02H7/125

    CPC classification number: H02M1/32 ,  G01R31/028 ,  G01R31/42 ,  H02H7/122 ,  H02H7/16 ,  H02H9/001 ,  H02M1/36 ,  H02M5/458 ,  H02P2201/03

    Abstract: The present invention provides a control apparatus for detecting an early stage short circuit between the terminals of an electrolytic capacitor, and detecting a short circuit between a load that is connected in parallel to the electrolytic capacitor, the apparatus performing appropriate processing before an adverse effect is inflicted on peripheral equipment. In the control apparatus, microcomputers switch on a second relay; an electrolytic capacitor is gradually charged via a current-limiting resistor; a first voltage detection control for detecting a voltage between terminals of the electrolytic capacitor is performed when a first set time period has elapsed after the second relay has been switched on; and a second voltage detection control for detecting a voltage between the terminals of the electrolytic capacitor is performed when a second set time period, which is longer than the first set time period, has elapsed after the second relay has been switched on.

    Abstract translation: 本发明提供一种用于检测电解电容器的端子之间的早期短路并检测与电解电容器并联连接的负载之间的短路的控制装置，该装置在不利影响之前进行适当的处​​理 对外围设备造成的影响。 在控制装置中，微型计算机接通第二继电器; 电解电容器通过限流电阻逐渐充电; 当在第二继电器接通之后经过第一设定时间时，执行用于检测电解电容器端子之间的电压的第一电压检测控制; 并且当在第二继电器接通之后已经经过比第一设定时间长的第二设定时间段时，执行用于检测电解电容器的端子之间的电压的第二电压检测控制。

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