公开(公告)号：US08538611B2

公开(公告)日：2013-09-17

申请号：US10736089

申请日：2003-12-15

申请人： Ajith K. Kumar ,  Paul K. Houpt ,  Stephen S. Mathe ,  Paul M. Julich ,  Jeffrey Kisak ,  Glenn Shaffer ,  Scott D. Nelson

发明人： Ajith K. Kumar ,  Paul K. Houpt ,  Stephen S. Mathe ,  Paul M. Julich ,  Jeffrey Kisak ,  Glenn Shaffer ,  Scott D. Nelson

IPC分类号： G06F19/00

CPC分类号： B61L27/0027 ,  B61L2205/04

摘要： A multi-level system for management of a railway system and its operational components in which the railway system has a first level configured to optimize an operation within the first level that includes first level operational parameters which define operational characteristics and data of the first level, and a second level configured to optimize an operation within the second level that includes second level operational parameters which define the operational characteristic and data of the second level. The first level provides the second level with the first level operational parameters, and the second level provides the first level with the second level operational parameters, such that optimizing the operation within the first level and optimizing the operation within the second level are each a function of optimizing a system optimization parameter. The levels can include a railroad infrastructure level, a track network level, a train level, a consist level and a locomotive level.

摘要翻译： 一种用于管理铁路系统及其操作部件的多级系统，其中铁路系统具有第一级，其被配置为优化在第一级内的操作，其包括定义第一级的操作特性和数据的第一级操作参数， 以及第二级，其被配置为优化所述第二级别内的操作，所述第二级别包括限定所述第二级别的操作特性和数据的第二级操作参数。 第一级提供具有第一级操作参数的第二级，并且第二级向第一级提供第二级操作参数，使得优化第一级中的操作并优化第二级内的操作各自是功能 优化系统优化参数。 水平可以包括铁路基础设施水平，轨道网络级别，列车级别，组合级别和机车级别。

公开(公告)号：US09120494B2

公开(公告)日：2015-09-01

申请号：US11566384

申请日：2006-12-04

申请人： Ajith K. Kumar ,  John E. Hershey ,  Carlos L. Hanze ,  Wolfgang Daum ,  David M. Davenport

发明人： Ajith K. Kumar ,  John E. Hershey ,  Carlos L. Hanze ,  Wolfgang Daum ,  David M. Davenport

IPC分类号： B61L3/12

CPC分类号： B61L3/127

摘要： A method for operating a train having at least one locomotive vehicle, the method including controlling operation of the train via a first crew member located on-board the locomotive unit, providing information that may be required for operation of the train to a second crew member located remote from the first crew member, and using the information to enable the second crew member to assist the first crew member in the controlling of the train.

摘要翻译： 一种用于操作具有至少一个机车的列车的方法，所述方法包括经由位于机车单元上的第一机组人员来控制列车的操作，提供列车运行所需的信息给第二机组人员 位于远离第一机组成员的位置，并且使用该信息使第二机组成员协助第一机组成员控制列车。

公开(公告)号：US07256974B2

公开(公告)日：2007-08-14

申请号：US11401664

申请日：2006-04-11

申请人： Christopher Wade McNally ,  Ajith K. Kumar ,  Bret Dwayne Worden

发明人： Christopher Wade McNally ,  Ajith K. Kumar ,  Bret Dwayne Worden

IPC分类号： G01R27/18 ,  G01R27/20

CPC分类号： H02H3/16

摘要： A system for isolating electrical ground faults and secondary failures in an electrical system, the system comprising an AC ground isolation state machine for detecting and isolating an AC ground, a DC ground isolation state machine for detecting and isolating a DC ground, a component failure isolation state machine for detecting and isolating a change in a resistance, and a component failure early detection algorithm for determining a failure before using the state machines.

摘要翻译： 一种用于隔离电气系统中的电接地故障和二次故障的系统，该系统包括用于检测和隔离AC地的AC接地隔离状态机，用于检测和隔离DC地的DC接地隔离状态机，部件故障隔离 用于检测和隔离电阻变化的状态机，以及用于在使用状态机之前确定故障的部件故障早期检测算法。

公开(公告)号：US06600979B1

公开(公告)日：2003-07-29

申请号：US09683874

申请日：2002-02-26

申请人： Ajith K. Kumar ,  Bret Dwayne Worden ,  Roland Paul Donajkowski

发明人： Ajith K. Kumar ,  Bret Dwayne Worden ,  Roland Paul Donajkowski

IPC分类号： B60T1300

CPC分类号： B60T13/665 ,  B60T8/172 ,  B60T17/228 ,  B60T2250/04

摘要： Method and system for determining a reference speed indicative of true ground speed of a vehicle having a plurality of axles are provided. The reference speed for a designated one of the axles is dynamically adjusted to account for changes in vehicular acceleration that may occur while determination of the reference speed is being performed. The method allows collecting a stream of samples over respective sampling intervals of at least one motion-indication parameter corresponding to a respective axle of the vehicle. In one aspect thereof, one may use a torque reduction rulebase configured to avoid high torque reduction, and inaccuracies in the motion-indication parameter due to high levels of creep, if any, in a wheel of the respective axle. The method further allows estimating an inertia value for the vehicle based on respective changes in tractive effort and acceleration over each sampling interval. The collected motion parameter samples may be adjusted for changes in acceleration over each sampling interval using the estimated inertial value. A signal indicative of axle speed may be limited to at least one respective limit value of rate and magnitude based on the inertially-adjusted parameter samples to, for example, provide accurate slip control.

摘要翻译： 提供了用于确定表示具有多个轴的车辆的真实地面速度的参考速度的方法和系统。 动态地调整指定的一个轴的参考速度，以考虑在执行基准速度的确定时可能发生的车辆加速度的变化。 该方法允许在对应于车辆的相应车轴的至少一个运动指示参数的相应采样间隔上收集样本流。 在其一个方面，可以使用扭矩减小规则库，其被配置为避免高扭矩减小，以及由于相应车轮的车轮中的高水平蠕变（如果有的话），运动指示参数的不准确性。 该方法还允许基于每个采样间隔上的牵引力和加速度的相应变化来估计车辆的惯性值。 可以使用估计的惯性值来针对每个采样间隔的加速度的变化来调整收集的运动参数样本。 指示轴速度的信号可以基于惯性调整的参数样本被限制到速率和幅度的至少一个相应极限值，以例如提供精确的滑动控制。

公开(公告)号：US5306972A

公开(公告)日：1994-04-26

申请号：US916314

申请日：1992-07-17

申请人： Paul R. Hokanson ,  Ajith K. Kumar

发明人： Paul R. Hokanson ,  Ajith K. Kumar

IPC分类号： H02K9/02 ,  H02K17/16 ,  H02P1/26 ,  H02K9/00

CPC分类号： H02P1/26 ,  H02K17/165 ,  H02K9/02

摘要： An alternating current (AC) motor system includes an AC motor having a rotor and a stator with the rotor having a plurality of air passes for passing cooling air and the stator having end windings extending from each end. An air deflector is coupled to one end of the rotor and has a generally curved configuration for directing cooling air exiting the air passages into a generally radial flow direction and onto the stator end windings. The stator end windings comprise turns of a plurality of electrical conductors forming the stator winding circuits which are wound to form a plurality of phase windings. Controllable switches are connected to the winding circuits for coupling the phase windings into either a parallel or series circuit arrangement. The system is responsive to motor speed and operating state for selectively switching the windings between the series and parallel electrical circuit arrangements. Resistors are coupled in series electrical circuit with each of the electrical phase windings and controllable switches are coupled in parallel with the resistors for selectively bypassing phase current around the resistors.

摘要翻译： 交流（AC）电动机系统包括具有转子和定子的交流电动机，转子具有多个用于通过冷却空气的空气通道，并且定子具有从每个端部延伸的端部绕组。 空气导流器联接到转子的一端并且具有大致弯曲的构造，用于将从空气通道排出的冷却空气引导到大致径向的流动方向并且到定子端绕组上。 定子端绕组包括形成定子绕组电路的多个电导体的匝，其缠绕以形成多个相绕组。 可控开关连接到绕组电路，用于将相绕组耦合到并联或串联电路装置中。 该系统响应于电动机速度和操作状态来选择性地切换串联和并联电路装置之间的绕组。 电阻器与串联电路耦合，每个电相绕组和可控开关与电阻器并联耦合，用于选择性旁路电阻周围的相电流。

公开(公告)号：US5208741A

公开(公告)日：1993-05-04

申请号：US784866

申请日：1991-10-30

申请人： Ajith K. Kumar

发明人： Ajith K. Kumar

IPC分类号： H02P3/12

CPC分类号： H02P3/22

摘要： An improved electrical circuit configuration for a chopper circuit is disclosed which is particularly adapted for use with an inductive load such as a braking resistor of the type used in many rapid transit vehicles. Instead of connecting a di/dt reactor directly in series with the electronic switch of the chopper circuit, a di/dt reactor is connected in series with the freewheeling diode. Using this configuration, the di/dt reactor does not have to continuously handle the average current through the electronic switch during the entire chopping operation. Hence, a much smaller, lighter, and less expensive di/dt reactor can be utilized.

摘要翻译： 公开了一种用于斩波电路的改进的电路配置，其特别适用于诸如在许多快速运输车辆中使用的类型的制动电阻器的感性负载。 代替直接与斩波电路的电子开关串联的di / dt电抗器，di / dt电抗器与续流二极管串联连接。 使用这种配置，di / dt电抗器在整个斩波操作期间不必连续处理通过电子开关的平均电流。 因此，可以使用更小，更轻和更便宜的di / dt反应器。

公开(公告)号：US20080077285A1

公开(公告)日：2008-03-27

申请号：US11533922

申请日：2006-09-21

申请人： Ajith K. Kumar ,  Bret D. Worden

发明人： Ajith K. Kumar ,  Bret D. Worden

IPC分类号： G06F17/00

CPC分类号： B61L3/006

摘要： A multi-mode control system for a locomotive includes a throttle control device having notch settings corresponding to, for a first, long haul mode, control signals for providing respective tractive effort or power from the locomotive, a master controller in communication with the throttle control device and adapted to receive said control signals from the throttle control device and to transmit respective command signals to power-train components of the locomotive to achieve the respective tractive effort or power, the master controller also adapted for sending alternative command signals when a user-operable mode selector is set to one of one or more alternative modes. The user-operable mode selector includes one or more user interface devices in communication with the master controller for selecting one alternative mode of the one or more alternative modes.

摘要翻译： 一种用于机车的多模式控制系统包括节流控制装置，其具有对应于第一长距离模式的切口设置，用于提供来自机车的相应牵引力或功率的控制信号，与节气门控制器通信的主控制器 并且适于从所述节气门控制装置接收所述控制信号，并且将相应的命令信号发送到所述机车的功率列车部件以实现相应的牵引力或功率，所述主控制器还适于在用户 - 可操作模式选择器被设置为一种或多种替代模式中的一种。 用户可操作模式选择器包括与主控制器通信的一个或多个用户界面设备，用于选择一个或多个替代模式的一个备选模式。

公开(公告)号：US20080023966A1

公开(公告)日：2008-01-31

申请号：US11460111

申请日：2006-07-26

申请人： Ajith K. Kumar

发明人： Ajith K. Kumar

IPC分类号： H02P9/04

CPC分类号： B61C7/04 ,  B60K6/26 ,  B60K6/46 ,  B60L11/123 ,  B60L2200/26 ,  B60Y2200/14 ,  H02P9/08 ,  Y02T10/6217 ,  Y02T10/642 ,  Y02T30/16

摘要： A propulsion system for a relatively large land-based vehicle, such as a locomotive or off-highway vehicle, is provided. The system may include a brushless dynamoelectric machine made up of a main alternator having a main rotor and a main stator, and an auxiliary alternator having an auxiliary rotor and an auxiliary stator, wherein the main rotor and the auxiliary rotor are disposed on a shaft for joint rotation with the shaft. The dynamoelectric machine is operable in a power generating mode, and in an engine cranking mode. A power source may be connected to pass current to one or more windings in the auxiliary stator to induce an alternating current flow in one or more windings in the auxiliary rotor. A rectifier may be connected to receive the alternating current flow from the one or more windings in the auxiliary rotor. The rectifier is further connected to supply a rectified current to one or more windings in the main rotor to induce an alternating current flow in one or more windings in the main stator of the machine, wherein the alternating current flow in the one or more windings in the main stator of the machine constitutes the current generated by the dynamoelectric machine during the power generating mode. The power source to be connected during the engine cranking mode may be first and second inverters connected to provide an AC conversion to a DC input from an energy storage device to supply a respective alternating current having some desired characteristics. The one inverter may be connected to the one or more windings in the main stator, and the other inverter may be connected to the one or more windings in the auxiliary stator to produce a torque in the main rotor of the machine. The torque produced at the main rotor of the machine is mechanically coupled to a crankshaft of an internal combustion engine of the propulsion system to start the engine during the engine cranking mode.

公开(公告)号：US07152888B2

公开(公告)日：2006-12-26

申请号：US10606723

申请日：2003-06-26

申请人： Ajith K. Kumar ,  Bret D. Worden

发明人： Ajith K. Kumar ,  Bret D. Worden

IPC分类号： B60B39/00 ,  B61F19/00

CPC分类号： B61C15/10

摘要： A system and method for assessing a health and functionality of a locomotive friction modifying system wherein the locomotive has a friction modifying applicator associated with a wheel of the locomotive for applying a friction modifying agent to a rail on which the wheel is traversing. The system and method comprise a sensor detecting a predetermined operational condition of the locomotive. The system and method also comprise a controller associated with the sensor and responsive to input from the sensor determining a per unit creep of an axle of the locomotive. The controller also determines a tractive effort of the axle of the locomotive and determines a friction modifying applicator state for the applicator associated with the axle. The controller further compares the determined per unit creep of the axle, the tractive effort of the axle and the state of the friction modifying applicator associated with the axle to a predetermined value indicative of the health and functionality of the locomotive friction modifying system. The controller provides an indication of the health and functionality of the locomotive friction modifying system.

摘要翻译： 一种用于评估机车摩擦改变系统的健康和功能性的系统和方法，其中所述机车具有与所述机车的车轮相关联的摩擦修改施加器，用于将摩擦改进剂施加到所述车轮所穿过的轨道。 该系统和方法包括检测机车的预定操作状态的传感器。 系统和方法还包括与传感器相关联的控制器，并且响应于来自传感器的输入，确定机车的轴的每单位蠕变。 控制器还确定机车车轴的牵引力，并确定与车轴相关联的施加器的摩擦改变施加器状态。 控制器进一步将轴的每单位蠕变，轴的牵引力和与轴相关联的摩擦修改施加器的状态确定为指示机车摩擦修改系统的健康和功能的预定值。 控制器提供机车摩擦修改系统的健康和功能的指示。

公开(公告)号：US06781808B2

公开(公告)日：2004-08-24

申请号：US09828382

申请日：2001-04-06

申请人： Ajith K. Kumar ,  Jeremy McGarry

发明人： Ajith K. Kumar ,  Jeremy McGarry

IPC分类号： H02H908

CPC分类号： B60L3/0023 ,  B60L2200/26

摘要： A method for detecting electrical faulty conditions in a plurality of power devices of a propulsion system is provided. The plurality of power devices is connectable in parallel circuit through a direct current (DC) link to an external DC power source. The method provides a first sequence of actions for determining an electrical short condition in at least one of the power devices upon the power source being connected. The method further provides a second sequence of actions for determining an electrical open condition in a respective one of the plurality of power devices during the occurrence of high current events.

摘要翻译： 提供一种用于检测推进系统的多个功率装置中的电气故障状况的方法。 多个功率器件可通过直流（DC）连接到外部DC电源的并联电路中连接。 该方法提供用于在电源连接时确定至少一个功率器件中的电短路状况的第一动作序列。 该方法进一步提供用于在发生高电流事件期间确定多个功率器件中的相应一个功率器件中的电开路状态的第二动作序列。