中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

9 records (took 0.021 seconds)

    SYSTEMS AND METHODS FOR POWER RIDE-THROUGH IN VARIABLE SPEED DRIVES
    3.
    发明申请
    SYSTEMS AND METHODS FOR POWER RIDE-THROUGH IN VARIABLE SPEED DRIVES 审中-公开
    用于变速驱动器中的动力传动系统和方法

    公开(公告)号：WO2008021214A3

    公开(公告)日：2008-11-20

    申请号：PCT/US2007017757

    申请日：2007-08-10

    Applicant: BAKER HUGHES INC ,  LEUTHEN MICKEY ,  KNOX DICK ,  YOHANAN TOM G ,  RIDER JERALD

    Inventor： LEUTHEN MICKEY ,  KNOX DICK ,  YOHANAN TOM G ,  RIDER JERALD

    IPC: F04B49/06

    CPC classification number: H02H7/1222

    Abstract: Systems and methods for providing ride-through for interruptions in the power supplied to drives that are used to control equipment such as downhole submersible pumps. In one embodiment, a variable speed drive includes converter and inverter sections, a capacitor bank and a control system. The drive shuts down the converter section upon detecting a disruption in the AC input power and continues to generate output power by drawing on the energy stored in the capacitor bank. When the AC input power returns (or begins to return) to normal, the drive resumes operation of the converter section in a controlled manner (e.g., by presetting the firing angle of the SCR's in the converter to match the voltage across the capacitor bank.) The drive thereby limits the current that recharges the capacitor bank and prevents sudden inrushes of current that could damage the drive.

    Abstract translation: 系统和方法为提供给用于控制井下潜水泵等设备的驱动装置的供电中断提供穿越。 在一个实施例中，变速驱动器包括变换器和逆变器部分，电容器组和控制系统。 变频器在检测到交流输入电源中断后关闭变流器部分，并通过利用储存在电容器组中的能量继续产生输出电力。 当交流输入电源恢复（或开始恢复）正常时，变频器以受控方式恢复变频器部分的运行（例如，通过预先设置变频器中SCR的触发角度以匹配电容器组两端的电压。 ）驱动器因此限制了对电容器组进行再充电的电流，并防止可能会损坏驱动器的电流突然中断。

    METHOD FOR BOOSTING THE OUTPUT VOLTAGE OF A VARIABLE FREQUENCY DRIVE
    4.
    发明申请
    METHOD FOR BOOSTING THE OUTPUT VOLTAGE OF A VARIABLE FREQUENCY DRIVE 审中-公开
    提高可变频率驱动的输出电压的方法

    公开(公告)号：WO0189068A3

    公开(公告)日：2002-03-14

    申请号：PCT/US0115249

    申请日：2001-05-11

    Applicant: BAKER HUGHES INC

    Inventor： RIDER JERALD ,  LAYTON JAMES E ,  LEUTHEN JOHN M ,  KNOX DICK L

    IPC: E21B43/12 ,  F04B47/06 ,  H02M7/5387 ,  F04D13/08

    CPC classification number: F04B47/06 ,  E21B43/128

    Abstract: A sine wave filter including an inductor for each phase (three inductors) and three delta- or Y-connected capacitors is employed within a borehole power system, coupled within a three phase power system at the surface between the output of a variable frequency drive and a three phase power cable transmitting power to a borehole location, and boosts the output voltage of the drive. The sine wave filter is designed to have a resonant frequency higher than the maximum operational frequency of the drive, and a Q such that, at the maximum operational frequency of the drive, the filter provides a voltage gain equal to the ratio of the desired voltage to the drive's maximum output power at the maximum operational frequency. The sine wave filter also smooths the voltage waveform of a pulse width modulated variable frequency drive.

    Abstract translation: 在钻孔电力系统中采用了包括用于每相（三个电感器）的电感器和三个三角形或Y形连接的电容器的正弦波滤波器，其耦合在可变频率驱动器的输出之间的表面的三相电力系统和 三相电力电缆将电力传输到钻孔位置，并提高驱动器的输出电压。 正弦波滤波器被设计为具有高于驱动器的最大工作频率的谐振频率，以及Q，使得在驱动器的最大工作频率下，滤波器提供等于所需电压的比率的电压增益 以最大工作频率驱动变频器的最大输出功率。 正弦波滤波器还使脉宽调制变频器的电压波形平滑。

    5.
    发明专利
    未知

    公开(公告)号：BRPI0809907A2

    公开(公告)日：2014-10-07

    申请号：BRPI0809907

    申请日：2008-04-04

    Applicant: BAKER HUGHES INC

    Inventor： LEUTHEN MICKEY ,  PLITT SHELDON ,  RIDER JERALD ,  YOHANAN TOM G

    IPC: E21B43/12 ,  F04D15/02

    Abstract: Systems and methods for using variable speed drives to restart downhole submersible pump motors. In one embodiment, a downhole pump is controlled using a variable speed drive that includes a control system configured to detect interruptions in the operation of the pump system. After an interruption that requires the restart of the pump motor, the control system determines the reverse rotational speed of the pump motor and restarts the motor when this speed is sufficiently low. The control system may be configured to reduce the output voltage of the variable speed drive and sweep through a range of output frequencies to determine the frequency at which the current drawn by the motor is lowest. This is the frequency at which the drive's output matches the speed of the motor and the apparent impedance of the motor is highest. When the speed is low enough, the motor is restarted.

    METHOD FOR BOOSTING THE OUTPUT VOLTAGE OF A VARIABLE FREQUENCY DRIVE
    8.
    发明专利
    METHOD FOR BOOSTING THE OUTPUT VOLTAGE OF A VARIABLE FREQUENCY DRIVE 未知

    公开(公告)号：CA2408795C

    公开(公告)日：2005-11-22

    申请号：CA2408795

    申请日：2001-05-11

    Applicant: BAKER HUGHES INC

    Inventor： RIDER JERALD ,  KNOX DICK L ,  LAYTON JAMES E ,  LEUTHEN JOHN M

    IPC: E21B43/12 ,  F04B47/06 ,  H02M7/5387 ,  F04D13/08

    Abstract: A sine wave filter including an inductor for each phase (three inductors) an d three delta- or Y-connected capacitors is employed within a borehole power system, coupled within a three phase power system at the surface between the output of a variable frequency drive and a three phase power cable transmitting power to a borehole location, and boosts the output voltage of the drive. The sine wave filter is designed to have a resonant frequency higher than the maximum operational frequency of the drive, and a Q such tha t, at the maximum operational frequency of the drive, the filter provides a voltage gain equal to the ratio of the desired voltage to the drive's maximu m output power at the maximum operational frequency. The sine wave filter also smooths the voltage waveform of a pulse width modulated variable frequency drive.

Patent Agency Ranking