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    Current Profile Strategy for Minimizing Torque Ripple and Current
    1.
    发明申请
    Current Profile Strategy for Minimizing Torque Ripple and Current 有权
    最小化扭矩波纹和电流的当前轮廓策略

    公开(公告)号：US20150318806A1

    公开(公告)日：2015-11-05

    申请号：US14266110

    申请日：2014-04-30

    Applicant: CATERPILLAR INC

    Inventor： Jackson Wai ,  Carlos Nino Baron ,  Jesse Gerdes ,  Ernesto Inoa ,  Ahmed Khalil

    IPC: H02P6/10

    CPC classification number: H02P25/098 ,  B62D5/046 ,  H02K29/08 ,  H02P6/10 ,  H02P6/14 ,  Y02T10/7258

    Abstract: A method of controlling an electric motor may include determining a desired torque at the electric motor. A current at a first phase of the electric motor may be calculated at a controller. The calculated current may be a current that results in supplying the desired torque at the electric motor. The controller may compare the calculated current to a predetermined threshold current, and when the calculated current is greater than the predetermined threshold current, the controller may reduce the calculated current to the predetermined threshold current and adjust a current in a second phase adjacent to the first phase of the electric motor to continue to supply the desired torque at the electric motor.

    Abstract translation: 控制电动机的方法可以包括确定电动机的期望转矩。 可以在控制器处计算电动机的第一阶段的电流。 计算出的电流可以是导致在电动机上提供期望转矩的电流。 控制器可以将计算的电流与预定的阈值电流进行比较，并且当所计算的电流大于预定的阈值电流时，控制器可以将计算出的电流减小到预定的阈值电流，并且调节与第一 电动机的相位继续在电动机上提供期望的转矩。

    Sensorless Control of Switched Reluctance Machines for Low Speeds and Standstill
    3.
    发明申请
    Sensorless Control of Switched Reluctance Machines for Low Speeds and Standstill 审中-公开
    用于低速和静止的开关磁阻机的无传感器控制

    公开(公告)号：US20150381087A1

    公开(公告)日：2015-12-31

    申请号：US14314510

    申请日：2014-06-25

    Applicant: Caterpillar Inc.

    Inventor： Seok-hee Han ,  Carlos Nino Baron ,  Jackson Wai ,  Ahmed Khalil ,  Ernesto Inoa ,  Jesse Gerdes ,  James Michael Thorne

    IPC: H02P6/18

    CPC classification number: H02P6/185 ,  H02P6/18 ,  H02P25/08 ,  H02P25/089 ,  H02P27/06

    Abstract: A method for determining rotor position of a switched reluctance (SR) machine having a rotor and a stator is provided. The method may include injecting a test pulse into one or more idle phases of the SR machine, determining a decoupled flux value based at least partially on a total flux value corresponding to the test pulse and a mutual flux value, and determining the rotor position based at least partially on the decoupled flux value.

    Abstract translation: 提供了一种用于确定具有转子和定子的开关磁阻（SR）机器的转子位置的方法。 该方法可以包括将测试脉冲注入到SR机器的一个或多个空闲阶段中，至少部分地基于对应于测试脉冲的总通量值和相互通量值来确定解耦通量值，并且基于转子位置确定 至少部分地取决于解耦通量值。

    Hybrid Soft Switching for Current Regulation in Switched Reluctance Machines
    8.
    发明申请
    Hybrid Soft Switching for Current Regulation in Switched Reluctance Machines 审中-公开
    开关磁阻电机电流调节的混合软开关

    公开(公告)号：US20160248362A1

    公开(公告)日：2016-08-25

    申请号：US14626635

    申请日：2015-02-19

    Applicant: CATERPILLAR INC.

    Inventor： Carlos Nino Baron ,  Ernesto Inoa ,  Jackson Wai ,  Jesse Gerdes ,  Ahmed Khalil

    IPC: H02P25/08

    CPC classification number: H02P25/08 ,  H02P25/089

    Abstract: A method of regulating a phase current of an electric motor is provided. The method may include selectively enabling one or more switches of each phase of the electric motor according to one of at least a soft chopping motoring routine and a soft chopping generating routine, monitoring the phase current relative to a first hysteresis band, controlling the switches according to the soft chopping motoring routine when the phase current exceeds the first hysteresis band while operating according to the soft chopping generating routine, and controlling the switches according to the soft chopping generating routine when the phase current exceeds the first hysteresis band while operating according to the soft chopping motoring routine.

    Abstract translation: 提供一种调节电动机的相电流的方法。 该方法可以包括根据至少软斩波电动程序和软斩波产生程序中的至少一个选择性地启用电动机的每个相的一个或多个开关，监测相对于第一滞后带的相电流，根据 根据软斩波产生程序在相电流超过第一滞后频带的同时，根据软斩波产生程序在相电流超过第一滞后频带时控制开关，同时根据 软斩动作程序。

    Detecting Ground Fault Location
    9.
    发明申请
    Detecting Ground Fault Location 有权
    检测接地故障位置

    公开(公告)号：US20150192632A1

    公开(公告)日：2015-07-09

    申请号：US14150119

    申请日：2014-01-08

    Applicant: Caterpillar Inc.

    Inventor： Alexander C. Crosman, III ,  Ernesto Inoa ,  Jesse R. Gerdes

    IPC: G01R31/08 ,  G01R31/34 ,  G01R31/02

    CPC classification number: G01R31/025 ,  G01R31/086 ,  G01R31/343

    Abstract: A technique and system for detecting a location of a ground fault in an electrical system are provided. The technique and system include steps or components for determining a ground fault voltage, receiving a gate control signal associated with an electric load, comparing the ground fault voltage to the gate control signal, and determining whether the ground fault is located at the electric load based on the comparison of the ground fault voltage to the gate control signal.

    Abstract translation: 提供了用于检测电气系统中接地故障位置的技术和系统。 该技术和系统包括用于确定接地故障电压的步骤或组件，接收与电负载相关联的门控信号，将接地故障电压与门控制信号进行比较，以及确定接地故障是否位于电负载 关于接地故障电压与门控信号的比较。

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