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    METHOD, APPARATUS AND COMPUTER-READABLE CODE FOR DETECTING AN INCIPIENT GROUND FAULT IN AN ELECTRICAL PROPULSION SYSTEM
    62.
    发明申请
    METHOD, APPARATUS AND COMPUTER-READABLE CODE FOR DETECTING AN INCIPIENT GROUND FAULT IN AN ELECTRICAL PROPULSION SYSTEM 有权
    用于检测电动推进系统中的地下故障的方法，装置和计算机可读代码

    公开(公告)号：US20070229090A1

    公开(公告)日：2007-10-04

    申请号：US11762216

    申请日：2007-06-13

    Applicant: AJITH KUMAR

    Inventor： AJITH KUMAR

    IPC: G01R31/02

    CPC classification number: B60L3/0023 ,  B60L3/0069 ,  B60L9/005 ,  B60L11/12 ,  B60L2200/26 ,  G01R31/008 ,  G01R31/025 ,  G01R31/088

    Abstract: Method, apparatus and computer-readable code are provided for detecting a location of an incipient ground fault in an electrical propulsion system. The apparatus may include a sensor configured to sense a respective ground leakage signal associated with a ground of the propulsion system. The apparatus may further include a second sensor configured to sense a voltage difference across a positive rail and a negative rail of the direct current bus. A correlator is coupled to the first sensor to receive the ground leakage signal, and further coupled to receive at least one signal indicative of a respective energization state of a respective electrical phase for each respective one of the plurality of electrical devices. The correlator is configured to individually correlate the ground leakage signal with each received phase energization state signal, and supply an individual correlation signal between the received ground leakage signal and each received phase energization state signal. A processor is coupled to the correlator for processing each of the individual correlation signals supplied by the correlator and extracting a correlation value from the supplied correlation signals. The correlation value, when outside a threshold range, is indicative of an incipient ground fault in a respective phase of one of the plurality of electrical devices. A module is provided for dynamically adjusting the threshold range for detecting an incipient ground fault. The adjusting may be based on a magnitude and/or a rate of change of the magnitude of the sensed voltage difference across the positive and negative rails of the direct current bus.

    Abstract translation: 提供了用于检测电力推进系统中初始接地故障的位置的方法，装置和计算机可读代码。 该装置可以包括被配置为感测与推进系统的地面相关联的相应的地面泄漏信号的传感器。 该装置还可以包括被配置为感测跨越直流母线的正轨和负轨的电压差的第二传感器。 相关器耦合到第一传感器以接收接地泄漏信号，并且还耦合以接收表示多个电气设备中的每个相应电气设备的相应电相的相应通电状态的至少一个信号。 相关器被配置为将接地泄漏信号与每个接收相位通电状态信号单独地相关，并且在接收到的接地泄漏信号和每个接收相位通电状态信号之间提供单独的相关信号。 处理器被耦合到相关器，用于处理由相关器提供的每个相关信号，并从所提供的相关信号中提取相关值。 当在阈值范围之外时，所述相关值指示所述多个电气设备之一的相应相位中的初始接地故障。 提供了用于动态调整阈值范围以检测初始接地故障的模块。 该调节可以基于直流母线的正和负极轨道上感测到的电压差值的大小和/或变化率。

    METHOD, SYSTEM AND COMPUTER SOFTWARE CODE FOR TRIP OPTIMIZATION WITH TRAIN/TRACK DATABASE AUGMENTATION
    63.
    发明申请
    METHOD, SYSTEM AND COMPUTER SOFTWARE CODE FOR TRIP OPTIMIZATION WITH TRAIN/TRACK DATABASE AUGMENTATION 有权
    方法，系统和计算机软件代码，用于跟踪/跟踪数据库的优化

    公开(公告)号：US20070219682A1

    公开(公告)日：2007-09-20

    申请号：US11622136

    申请日：2007-01-11

    Applicant: Ajith Kumar ,  Glenn Robert Shaffer

    Inventor： Ajith Kumar ,  Glenn Robert Shaffer

    IPC: G06F17/00

    CPC classification number: B61L3/006 ,  B61L27/0027

    Abstract: A system for providing at least one of train information and track characterization information for use in train performance, including a first element to determine a location of a train on a track segment and/or a time from a beginning of the trip. A track characterization element to provide track segment information, and a sensor for measuring an operating condition of at least one of the locomotives in the train are also included. A database is provided for storing track segment information and/or the operating condition of at least one of the locomotives. A processor is also included to correlate information from the first element, the track characterization element, the sensor, and/or the database, so that the database may be used for creating a trip plan that optimizes train performance in accordance with one or more operational criteria for the train.

    Abstract translation: 一种用于提供用于列车性能的列车信息和轨道表征信息中的至少一个的系统，包括用于确定列车在轨道段上的位置和/或从行程开始起的时间的第一元件。 还包括用于提供轨道段信息的轨道表征元件和用于测量列车中的至少一个机车的操作状态的传感器。 提供了一种用于存储轨道段信息和/或至少一个机车的操作条件的数据库。 还包括处理器以将来自第一元件，轨道表征元件，传感器和/或数据库的信息相关联，使得数据库可用于创建根据一个或多个操作来优化列车性能的旅行计划 火车的标准

    Locomotive speed determination
    65.
    发明申请
    Locomotive speed determination 失效
    机车速度确定

    公开(公告)号：US20070046220A1

    公开(公告)日：2007-03-01

    申请号：US11209493

    申请日：2005-08-23

    Applicant: Robert Alton ,  Ajith Kumar ,  Bret Worden

    Inventor： Robert Alton ,  Ajith Kumar ,  Bret Worden

    IPC: H02P5/00

    CPC classification number: B60L3/102 ,  B60L2200/26

    Abstract: A method and system for determining a ground speed for locomotives (e.g., 12, 14) of a train (16) comprising at least two locomotives for use in controlling an operation of the train. The method includes selecting an axle of any one locomotive of the train for measuring a speed corresponding to the selected axle. The method also includes determining a ground speed for at least another locomotive of the train based on a measured speed corresponding to the selected axle of the one locomotive.

    Abstract translation: 一种用于确定列车（16）的机车（例如，12,14）的地面速度的方法和系统，其包括用于控制列车的操作的至少两台机车。 该方法包括选择列车的任何一个机车的轴，以测量与所选轴相对应的速度。 该方法还包括基于与一个机车的所选轴相对应的测量速度来确定列车的至少另一个机车的地面速度。

    System and method for dealing with ground fault conditions that can arise in an electrical propulsion system
    66.
    发明申请
    System and method for dealing with ground fault conditions that can arise in an electrical propulsion system 有权

    公开(公告)号：US20060255656A1

    公开(公告)日：2006-11-16

    申请号：US11126801

    申请日：2005-05-11

    Applicant: Mark Linebach ,  Ajith Kumar ,  Bret Worden ,  Jeremy McGarry ,  Scott Zarella

    Inventor： Mark Linebach ,  Ajith Kumar ,  Bret Worden ,  Jeremy McGarry ,  Scott Zarella

    IPC: B60T8/34

    CPC classification number: B60L9/005 ,  B60L2200/26

    Abstract: A method and system is provided for detecting and performing diagnostics regarding an incipient ground fault that may occur in an electrical propulsion system of a traction vehicle, such as a locomotive, transit vehicle, or off-highway vehicle. The method allows providing a first ground connection for the electrical propulsion system. This first ground connection forms a grounding path generally used by the electrical propulsion system during normal operation. The method further allows providing a second ground connection for the electrical propulsion system. This second ground connection forms a grounding path selectively usable in lieu of the first ground connection. A control strategy is defined for switching between the first ground connection and the second ground connection. A respective leakage current associated with at least one of the first and second ground connections may be monitored. Switching between the first and second ground connections may be controlled based on the monitored leakage current associated with at least one of the first and second ground connections.

    Secondary power for critical loads for railroad
    69.
    发明申请
    Secondary power for critical loads for railroad 失效
    铁路重要载荷的次要功率

    公开(公告)号：US20060025902A1

    公开(公告)日：2006-02-02

    申请号：US11183368

    申请日：2005-07-17

    Applicant: Herbert Brown ,  Jeffrey Daigle ,  Ajith Kumar

    Inventor： Herbert Brown ,  Jeffrey Daigle ,  Ajith Kumar

    IPC: G06F17/00

    CPC classification number: B60L1/02 ,  B60L3/00 ,  B60L3/003 ,  B60L3/0092 ,  B60L11/08 ,  B60L2200/26 ,  Y02T10/70 ,  Y10T307/615

    Abstract: In a locomotive having at least one electrical load connected to at least one power source via a locomotive power carrying bus, a system for ensuring a current connection between the at least one power source and the at least one electrical load is provided. The system includes a first rectification device, wherein the first rectification device is connected between the at least one electrical load and the locomotive power carrying bus to provide a rectified current connection between a first power source and the at least one electrical load. The system further includes a second rectification device, wherein the second rectification device is connected between the at least one electrical load and the locomotive power carrying bus to provide a current connection between a second power source and the at least one electrical load and at least one auxiliary rectification device, wherein the at least one auxiliary rectification device is connected to the at least one electrical load and at least one of the first rectification device and the second rectification device to ensure a continuous current connection between the at least one power source and the at least one electrical load.

    Abstract translation: 在具有至少一个电负载的机车中，至少一个电力负载通过机车供电总线连接到至少一个电源，提供了用于确保至少一个电源和至少一个电负载之间的电流连接的系统。 该系统包括第一整流装置，其中第一整流装置连接在至少一个电负载和机车供电总线之间，以在第一电源和至少一个电负载之间提供整流电流连接。 所述系统还包括第二整流装置，其中所述第二整流装置连接在所述至少一个电负载和所述机车供电总线之间，以在第二电源和所述至少一个电负载之间提供电流连接，并且至少一个 辅助整流装置，其中所述至少一个辅助整流装置连接到所述至少一个电负载和所述第一整流装置和所述第二整流装置中的至少一个，以确保所述至少一个电源和所述第二整流装置之间的连续电流连接 至少一个电负载。

    Energy storage system and method for hybrid propulsion
    70.
    发明申请
    Energy storage system and method for hybrid propulsion 有权
    储能系统及混合推进方法

    公开(公告)号：US20050285554A1

    公开(公告)日：2005-12-29

    申请号：US10878804

    申请日：2004-06-28

    Applicant: Robert King ,  Dongwoo Song ,  Lembit Salasoo ,  Ajith Kumar

    Inventor： Robert King ,  Dongwoo Song ,  Lembit Salasoo ,  Ajith Kumar

    IPC: B60K6/00 ,  B60L11/18 ,  H02P3/00

    CPC classification number: B60L11/18 ,  B60L2200/26 ,  B60L2210/20 ,  Y02T10/7005 ,  Y02T10/725

    Abstract: A hybrid propulsion system. The system comprises one or more hybrid propulsion traction drives having an electric motor operable to produce mechanical power for propulsion. A hybrid propulsion traction drive is operable to receive power from an on-board power generation system. The electric motor is operable to receive power from an energy storage unit and operable to supply power to the energy storage unit. The energy storage unit may be coupled to the electric motor via a switch.

    Abstract translation: 混合推进系统。 该系统包括一个或多个混合推进牵引驱动器，其具有可操作以产生用于推进的机械动力的电动马达。 混合推进牵引驱动器可操作以从车载发电系统接收电力。 电动机可操作以从能量存储单元接收电力并可操作以向能量存储单元供电。 能量存储单元可以通过开关耦合到电动机。

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