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1. 发明授权

US08334666B2 Device, computer program product and computer-implemented method for backspin detection in an electrical submersible pump assembly 有权
标题翻译：设备，计算机程序产品和计算机实现的电潜水泵组件中的后旋检测方法
公开(公告)号：US08334666B2
公开(公告)日：2012-12-18
申请号：US12869443
申请日：2010-08-26
申请人： Sheldon Plitt , John M. Leuthen
发明人： Sheldon Plitt , John M. Leuthen
IPC分类号： G01R31/02 , H02H3/04 , H02K11/00
CPC分类号： E21B47/0007 , H02P3/00
摘要： A system for detecting a backspin condition of a motor in an electrical submersible pump is described herein. The system comprises a variable speed drive for powering the motor via a power cable; and a controller, the controller having a memory, a computer processor, and a computer program product stored on the memory and executable by the processor. The computer program product comprises the instructions of: monitoring an input current or impedance on the power cable to determine changes in motor current impedance, comparing changes in the motor current impedance to a historical threshold value for backspin events to determine whether the motor is backspinning; impeding operable power to the motor when it is determined the motor is backspinning; supplying a low AC voltage to the motor after it is determined the motor is backspinning; and determining whether or not the motor has stopped backspinning by monitoring the low AC voltage.
摘要翻译：这里描述了用于检测电潜泵中的电动机的回旋状态的系统。该系统包括用于通过电力电缆为马达供电的变速驱动器; 以及控制器，所述控制器具有存储器，计算机处理器和存储在所述存储器上并可由所述处理器执行的计算机程序产品。计算机程序产品包括以下指令：监测电力电缆上的输入电流或阻抗，以确定电动机电流阻抗的变化，将电动机电流阻抗的变化与逆旋事件的历史阈值进行比较，以确定电动机是否反向旋转; 当确定电动机是后退时，阻碍对电动机的可操作的动力; 确定电动机后退后，向电动机提供低交流电压; 以及通过监视低交流电压来确定电动机是否已经停止反向旋转。

2. 发明授权

US08092190B2 Systems and methods for reducing pump downtime by determining rotation speed using a variable speed drive 有权
标题翻译：通过使用变速驱动器确定转速来减少停泵时间的系统和方法
公开(公告)号：US08092190B2
公开(公告)日：2012-01-10
申请号：US12061241
申请日：2008-04-02
申请人： John M. Leuthen , Sheldon Plitt , Jerald R. Rider , Tom G. Yohanan
发明人： John M. Leuthen , Sheldon Plitt , Jerald R. Rider , Tom G. Yohanan
IPC分类号： F04B49/06 , H02P1/16
CPC分类号： E21B43/128 , F04D15/0066
摘要： 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.
摘要翻译：使用变速驱动器重新启动井下潜水泵电机的系统和方法。在一个实施例中，使用变速驱动器控制井下泵，所述变速驱动器包括被配置为检测泵系统的操作中的中断的控制系统。在需要重新启动泵电机的中断之后，控制系统确定泵电机的反转速度，并在该速度足够低时重启电动机。控制系统可以被配置为减小变速驱动器的输出电压并且扫过一定范围的输出频率以确定由电动机汲取的电流最低的频率。这是驱动器的输出与电机速度匹配的频率，电机的视在阻抗最高。当速度足够低时，电机重启。

3. 发明申请

US20080247880A1 Systems and Methods for Reducing Pump Downtime by Determining Rotation Speed Using a Variable Speed Drive 有权
标题翻译：通过使用变速驱动确定转速来减少停泵时间的系统和方法
公开(公告)号：US20080247880A1
公开(公告)日：2008-10-09
申请号：US12061241
申请日：2008-04-02
申请人： John M. Leuthen , Sheldon Plitt , Jerald R. Rider , Tom G. Yohanan
发明人： John M. Leuthen , Sheldon Plitt , Jerald R. Rider , Tom G. Yohanan
IPC分类号： F04B49/06 , H02P5/00
CPC分类号： E21B43/128 , F04D15/0066
摘要： 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.
摘要翻译：使用变速驱动器重新启动井下潜水泵电机的系统和方法。在一个实施例中，使用变速驱动器控制井下泵，所述变速驱动器包括被配置为检测泵系统的操作中的中断的控制系统。在需要重新启动泵电机的中断之后，控制系统确定泵电机的反转速度，并在该速度足够低时重启电动机。控制系统可以被配置为减小变速驱动器的输出电压并且扫过一定范围的输出频率以确定由电动机汲取的电流最低的频率。这是驱动器的输出与电机速度匹配的频率，电机的视在阻抗最高。当速度足够低时，电机重启。

4. 发明申请

US20110050145A1 Device, Computer Program Product and Computer-Implemented Method for Backspin Detection in an Electrical Submersible Pump Assembly 有权
标题翻译：设备，计算机程序产品和计算机实现的电潜泵组件中反跳探测方法
公开(公告)号：US20110050145A1
公开(公告)日：2011-03-03
申请号：US12869443
申请日：2010-08-26
申请人： Sheldon Plitt , John M. Leuthen
发明人： Sheldon Plitt , John M. Leuthen
IPC分类号： H02H7/097
CPC分类号： E21B47/0007 , H02P3/00
摘要： A system for detecting a backspin condition of a motor in an electrical submersible pump is described herein. The system comprises a variable speed drive for powering the motor via a power cable; and a controller, the controller having a memory, a computer processor, and a computer program product stored on the memory and executable by the processor. The computer program product comprises the instructions of: monitoring an input current or impedance on the power cable to determine changes in motor current impedance, comparing changes in the motor current impedance to a historical threshold value for backspin events to determine whether the motor is backspinning; impeding operable power to the motor when it is determined the motor is backspinning; supplying a low AC voltage to the motor after it is determined the motor is backspinning; and determining whether or not the motor has stopped backspinning by monitoring the low AC voltage.
摘要翻译：这里描述了用于检测电潜泵中的电动机的回旋状态的系统。该系统包括用于通过电力电缆为马达供电的变速驱动器; 以及控制器，所述控制器具有存储器，计算机处理器和存储在所述存储器上并可由所述处理器执行的计算机程序产品。计算机程序产品包括以下指令：监测电力电缆上的输入电流或阻抗，以确定电动机电流阻抗的变化，将电动机电流阻抗的变化与逆旋事件的历史阈值进行比较，以确定电动机是否反向旋转; 当确定电动机是后退时，阻碍对电动机的可操作的动力; 确定电动机后退后，向电动机提供低交流电压; 以及通过监视低交流电压来确定电动机是否已经停止反向旋转。

5. 发明授权

US07607896B2 Systems and methods for power ride-through in variable speed drives 有权
标题翻译：变速驱动器中电力穿越的系统和方法
公开(公告)号：US07607896B2
公开(公告)日：2009-10-27
申请号：US11463836
申请日：2006-08-10
申请人： John M. Leuthen , Dick L. Knox , Tom G. Yohanan , Jerald R. Rider
发明人： John M. Leuthen , Dick L. Knox , Tom G. Yohanan , Jerald R. Rider
IPC分类号： F04B49/06
CPC分类号： H02H7/1222
摘要： 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.
摘要翻译：用于提供传递中断功能的系统和方法，用于提供给用于控制诸如井下潜水泵的设备的驱动器。在一个实施例中，变速驱动器包括转换器和逆变器部分，电容器组和控制系统。检测到AC输入功率中断后，驱动器关闭转换器部分，并通过利用存储在电容器组中的能量继续产生输出功率。当交流输入电源返回（或开始返回）正常时，驱动器以受控的方式恢复转换器部分的操作（例如，通过预设转换器中SCR的触发角度来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充电的电流，并防止可能损坏驱动器的电流突然损坏。

6. 发明授权

US4598353A Thyristor firing circuit for determining phase angle 失效
标题翻译：用于确定相位角的晶闸管点火电路
公开(公告)号：US4598353A
公开(公告)日：1986-07-01
申请号：US669143
申请日：1984-11-07
申请人： John M. Leuthen
发明人： John M. Leuthen
IPC分类号： H02M1/084 , H02M7/162 , H02M7/08
CPC分类号： H02M7/1626 , H02M1/0845
摘要： An SCR firing circuit allows the firing point to be changed. The firing circuit includes a ROM which has an output for each gate of each SCR. The ROM is programmed to fire the SCRs in a desired sequence. The ROM is driven by a counter, which counts pulses from an oscillator, the frequency of which is variable. The difference between the zero cross of the waveform and the ROM output is compared and averaged. The comparator output is summed with a variable DC demand voltage. The sum is applied to an integrator, which provides an integrated output to the oscillator to change the frequency of the oscillator if the firing point is changed.
摘要翻译： SCR点火电路允许改变点火点。点火电路包括具有每个SCR的每个栅极的输出的ROM。 ROM被编程为以期望的顺序触发SCR。 ROM由计数器驱动，计数器来自振荡器的脉冲，其频率是可变的。将波形的零交叉与ROM输出的差异进行比较和平均。比较器输出与可变直流需求电压相加。该和应用于积分器，该积分器为振荡器提供集成输出，以便在点火点改变时改变振荡器的频率。

7. 发明申请

US20090309524A1 System and Method for Adding Voltages of Power Modules in Variable Frequency Drives 有权
标题翻译：在变频器中增加功率模块电压的系统和方法
公开(公告)号：US20090309524A1
公开(公告)日：2009-12-17
申请号：US12476099
申请日：2009-06-01
申请人： Jerald R. Rider , John M. Leuthen , Jim E. Layton , Dick L. Knox
发明人： Jerald R. Rider , John M. Leuthen , Jim E. Layton , Dick L. Knox
IPC分类号： H02P27/00
CPC分类号： H02M5/458 , H02M7/49
摘要： Systems and methods for providing electrical power and to downhole oil production equipment such as electrical submersible pumps, wherein the outputs of multiple power modules are individually filtered before being added together to obtain a high voltage output that is provided to the downhole equipment. In one embodiment, an electrical drive system includes multiple power modules and corresponding filters. Each of the power modules is configured to receive an input power signal and to provide a corresponding pulse width modulated or stepped intermediate signal. The signal output by each power module is individually filtered to remove at least a portion of high-frequency components in the signal. The power modules and filters are coupled together in a configuration in which the filtered signals of the power modules are added to produce an output drive signal that is used to drive equipment such as an electrical submersible pump.
摘要翻译：用于提供电力的系统和方法以及诸如电潜泵的井下制油设备，其中多个功率模块的输出在被加入到一起之前被单独过滤以获得提供给井下设备的高压输出。在一个实施例中，电驱动系统包括多个功率模块和相应的滤波器。每个功率模块被配置为接收输入功率信号并提供相应的脉宽调制或阶梯式中间信号。每个功率模块输出的信号被单独滤波以去除信号中的至少一部分高频分量。功率模块和滤波器以其中添加了功率模块的滤波信号的配置耦合在一起，以产生用于驱动诸如电潜泵的设备的输出驱动信号。

8. 发明申请

US20090243398A1 Systems and Methods for Reducing Distortion in a Power Source Using an Active Harmonics Filter 失效
标题翻译：使用主动谐波滤波器减少电源失真的系统和方法
公开(公告)号：US20090243398A1
公开(公告)日：2009-10-01
申请号：US12058030
申请日：2008-03-28
申请人： Tom G. Yohanan , John M. Leuthen , Jerald R. Rider , Michael C. Underwood
发明人： Tom G. Yohanan , John M. Leuthen , Jerald R. Rider , Michael C. Underwood
IPC分类号： H02J1/02 , H04B1/10
CPC分类号： H02J3/1842 , Y02E40/22 , Y10T307/25
摘要： Systems and methods for reducing harmonic distortion in a power system resulting from non-linear loading on the power system. The power at an interface with a power source is measured, and then distortion in the waveforms of the supplied power is identified. Cancellation signals which cancel all or part of the distortion are then generated and injected at the interface. In one embodiment, the power is sampled to determine the waveform, and then a Fast Fourier Transform is performed on the waveform to convert it to the frequency domain. Harmonics of the fundamental frequency can then be identified, and conjugates of the harmonics generated. An inverse Fast Fourier Transform is performed on the conjugates to generate a signal which is amplified to produce the cancellation signal.
摘要翻译：用于减少由电力系统上非线性负载引起的电力系统谐波失真的系统和方法。测量与电源的接口处的功率，然后识别供电电源的波形失真。然后在接口处产生并注入取消全部或部分失真的消除信号。在一个实施例中，对功率进行采样以确定波形，然后对波形执行快速傅立叶变换以将其转换为频域。然后可以识别基频的谐波，并产生谐波的共轭。对共轭进行反向快速傅立叶变换以产生被放大以产生消除信号的信号。

9. 发明申请

US20070263331A1 Systems and Methods for Power Ride-Through in Variable Speed Drives 有权
标题翻译：变速驱动器电力穿越的系统和方法
公开(公告)号：US20070263331A1
公开(公告)日：2007-11-15
申请号：US11463836
申请日：2006-08-10
申请人： John M. Leuthen , Dick L. Knox , Tom G. Yohanan , Jerald R. Rider
发明人： John M. Leuthen , Dick L. Knox , Tom G. Yohanan , Jerald R. Rider
IPC分类号： H02H3/00
CPC分类号： H02H7/1222
摘要： 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.
摘要翻译：用于提供传递中断功能的系统和方法，用于提供给用于控制诸如井下潜水泵的设备的驱动器。在一个实施例中，变速驱动器包括转换器和逆变器部分，电容器组和控制系统。检测到AC输入功率中断后，驱动器关闭转换器部分，并通过利用存储在电容器组中的能量继续产生输出功率。当交流输入电源返回（或开始返回）正常时，驱动器以受控的方式恢复转换器部分的操作（例如，通过预设转换器中SCR的触发角度来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充电的电流，并防止可能损坏驱动器的电流突然损坏。

10. 发明授权

US5220494A Protection circuit and method for variable speed drives utilizing phase controlled converters 失效
标题翻译：使用相位控制转换器的变速驱动器的保护电路和方法
公开(公告)号：US5220494A
公开(公告)日：1993-06-15
申请号：US830307
申请日：1992-01-31
申请人： John M. Leuthen
发明人： John M. Leuthen
IPC分类号： H02H3/44 , H02H7/125 , H02M5/45
CPC分类号： H02H7/1252 , H02H3/44 , H02M5/4505
摘要： A method and circuit for detecting rapid increase in line voltages applied to variable speed drives utilizing a phase controlled converter. A three phase alternating current line voltage is applied to a full wave bridge rectifier to generate a direct current signal. A buffer amplifier having a high input impedance is coupled to the output of the rectifier and a diode is utilized to ensure that only positive voltage transients are detected. Positive voltage transients output through the buffer amplifier rapidly charge a capacitor through the low output impedance of the buffer amplifier and that charge is permitted to bleed off slowly through an associated resistor. The rate of change of the capacitor charge level is compared to a preset voltage level and increases beyond that preset level are utilized to trigger an inhibit signal which momentarily resets the delay angle of the switching devices within the phase controlled converter. In this manner, a rapid increase in the average slope of the input line voltage, whether or not preceded by a decrease, may be detected and removed from the input of a variable speed drive.
摘要翻译：一种用于检测利用相位控制转换器应用于变速驱动器的线路电压的快速增加的方法和电路。将三相交流线路电压施加到全波桥式整流器以产生直流电流信号。具有高输入阻抗的缓冲放大器耦合到整流器的输出，并且使用二极管来确保仅检测到正电压瞬变。通过缓冲放大器输出的正电压瞬态通过缓冲放大器的低输出阻抗快速对电容器充电，并允许电荷通过相关的电阻缓慢放出。将电容器充电电平的变化率与预设的电压电平进行比较，并且超过该预设电平的增益被用于触发暂时复位相控变换器内的开关器件的延迟角度的禁止信号。以这种方式，可以从变速驱动器的输入中检测和去除输入线电压的平均斜率的快速增加，无论是否在减小之前。

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