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    Regenerative braking system for reducing fuel consumption
    1.
    发明授权
    Regenerative braking system for reducing fuel consumption 有权
    用于降低燃油消耗的再生制动系统

    公开(公告)号：US09481252B1

    公开(公告)日：2016-11-01

    申请号：US14724767

    申请日：2015-05-28

    Applicant: CATERPILLAR INC.

    Inventor： Baojun Si ,  Dustin C. Selvey ,  William J. Tate ,  Mary Jill Trumper ,  Alexander Cameron Crosman, III

    IPC: H02P3/14 ,  B60L7/20 ,  H02P27/04 ,  B60L7/06

    CPC classification number: B60L7/20 ,  B60L7/06 ,  B60L7/14 ,  B60L11/123 ,  B60L11/1861 ,  B60L15/007 ,  B60L15/2009 ,  B60L2210/30 ,  B60L2210/40 ,  H02P3/14 ,  H02P27/06

    Abstract: Systems and methods are disclosed for reducing engine fuel consumption during regenerative braking. According to certain embodiments, the regenerative braking system has an engine, a generator, a rectifier, a first inverter, a traction motor, and a reverse recovery unit. The generator is configured to be driven by the engine to produce AC electrical power. The rectifier is configured to receive AC electrical power from the generator and convert the AC power to DC power. The first inverter is configured to receive the DC power and convert the DC power to AC power. The traction motor is configured to be driven by the AC power in a traction mode, and to produce regenerated power when rotated in reverse in a regenerative braking mode. The reverse recovery unit has a second inverter and a filter. The second inverter is electrically connected in parallel with the rectifier and configured to communicate at least part of the regenerated power from the traction motor to the generator during the regenerative braking mode. The filter is electrically connected downstream of the second inverter and in parallel with the rectifier. The filter is configured to filter transient voltage generated by the second inverter during the regenerative braking mode.

    Abstract translation: 公开了用于在再生制动期间减少发动机燃料消耗的系统和方法。 根据某些实施例，再生制动系统具有发动机，发电机，整流器，第一逆变器，牵引电动机和反向恢复单元。 发电机构造成由发动机驱动以产生交流电力。 整流器被配置为从发电机接收AC电力并将AC电力转换成DC电力。 第一个反相器配置为接收直流电，并将直流电转换成交流电源。 牵引电动机被配置为在牵引模式下由交流电驱动，并且在再生制动模式下反向旋转时产生再生电力。 反向恢复单元具有第二反相器和滤波器。 第二逆变器与整流器并联电连接并且被配置为在再生制动模式期间将来自牵引电动机的再生功率的至少一部分传递到发电机。 滤波器电连接在第二反相器的下游并与整流器并联。 滤波器被配置为在再生制动模式期间过滤由第二逆变器产生的瞬态电压。

    Motor driver having integrated braking chopper
    4.
    发明授权
    Motor driver having integrated braking chopper 有权
    集成制动斩波器的电机驱动器

    公开(公告)号：US09455651B2

    公开(公告)日：2016-09-27

    申请号：US14572355

    申请日：2014-12-16

    Applicant: Caterpillar Inc.

    Inventor： Rodwan T. Adra ,  Edward L. Zwilling ,  Thomas M. Baker ,  William J. Tate ,  Eric M. Andris

    IPC: H02P3/12 ,  H02P3/22 ,  H02P27/06

    CPC classification number: H02P3/065

    Abstract: A motor driver for driving a motor is disclosed. The motor driver has a first power bus, a first switching device coupled between the first power bus and a first terminal of the motor, a second power bus, a second switching device coupled between the second power bus and a second terminal of the motor, and an integrated braking chopper coupled between the first and second power buses. The integrated braking chopper is configured to dissipate an extra power generated by the motor.

    Abstract translation: 公开了一种用于驱动马达的马达驱动器。 电动机驱动器具有第一电力总线，耦合在第一电力总线和电动机的第一端子之间的第一开关装置，第二电力总线，耦合在第二电力总线和电动机的第二端子之间的第二开关装置， 以及联接在第一和第二电力总线之间的集成制动斩波器。 集成的制动斩波器被配置为耗散由电动机产生的额外功率。

    Vector Currents Controller for Salient Pole Synchronous Machine
    5.
    发明申请
    Vector Currents Controller for Salient Pole Synchronous Machine 审中-公开
    矢量电流控制器用于凸极同步机

    公开(公告)号：US20160276962A1

    公开(公告)日：2016-09-22

    申请号：US14661791

    申请日：2015-03-18

    Applicant: Caterpillar Inc.

    Inventor： Ahmed Khalil ,  Ernesto Inoa ,  Baojun Si ,  Srikar Thaduvayi ,  William J. Tate

    IPC: H02P6/00 ,  H02P6/04 ,  H02P6/08

    CPC classification number: H02P21/22 ,  B60L15/2045 ,  B60L2200/44 ,  B60L2240/421 ,  B60L2240/423 ,  B60L2240/527 ,  H02P21/0089 ,  H02P2006/045 ,  Y02P90/60 ,  Y02T10/643 ,  Y02T10/644 ,  Y02T10/645 ,  Y02T10/72 ,  Y02T10/7283 ,  Y02T90/16

    Abstract: A control system for an alternating current (AC) machine having a rotor and a stator is disclosed. The control system may include a direct current (DC) link providing a variable DC link voltage; an inverter module operatively coupled between the DC link and the AC machine, and a controller in communication with the inverter module. The inverter module may include a plurality of gates in selective communication with each phase of the stator. The controller may be configured to receive a signal indicative of the variable DC link voltage, receive a signal indicative of a rotational speed of the rotor, receive a torque command, and generate a direct-axis current command and a quadrature-axis current command using the variable DC link voltage, the rotational speed, and the torque command as inputs into a three-dimensional lookup table preprogrammed into a memory associated with the controller.

    Abstract translation: 公开了一种具有转子和定子的交流（AC）机器的控制系统。 控制系统可以包括提供可变DC链路电压的直流（DC）链路; 可操作地耦合在DC链路和AC电机之间的逆变器模块，以及与逆变器模块通信的控制器。 逆变器模块可以包括与定子的每个相位选择性地连通的多个门。 控制器可以被配置为接收指示可变直流母线电压的信号，接收指示转子的转速的信号，接收转矩指令，并且使用以下方式生成直轴电流指令和正交轴电流指令： 可变直流链路电压，转速和转矩指令作为预先编程到与控制器相关联的存储器中的三维查找表的输入。

    SYSTEM AND METHOD FOR ENERGY MANAGEMENT FOR ELECTRIC DRIVE SYSTEM
    6.
    发明申请
    SYSTEM AND METHOD FOR ENERGY MANAGEMENT FOR ELECTRIC DRIVE SYSTEM 审中-公开
    电力系统能源管理系统与方法

    公开(公告)号：US20150244292A1

    公开(公告)日：2015-08-27

    申请号：US14711856

    申请日：2015-05-14

    Applicant: Caterpillar Inc.

    Inventor： Baojun Si ,  Dustin Selvey ,  William J. Tate ,  Alexander C. Crosman, III

    IPC: H02P3/22

    CPC classification number: H02P3/22 ,  B60L7/22

    Abstract: The present disclosure is related to a method for energy management for an electric drive system during regenerative braking of a machine. The machine includes an electric drive assembly. The electric drive assembly includes a generator, a motor, a primary direct current bus and a secondary direct current bus having a regenerative brake assembly. The method of energy management includes connecting at least a chopper and a crowbar across the secondary direct current bus. Further, the method includes directing a secondary power stored during regenerative braking, from the primary or secondary or both the buses through the chopper or the crowbar during fault condition.

    Abstract translation: 本公开涉及一种用于机器的再生制动期间的电驱动系统的能量管理方法。 该机器包括电驱动组件。 电驱动组件包括发电机，电动机，初级直流母线和具有再生制动组件的二次直流母线。 能量管理方法包括至少连接二次直流总线上的斩波器和撬棒。 此外，该方法包括在故障状态期间，通过斩波器或撬棍引导在再生制动期间存储的次级功率，来自初级或次级或两者的总线。

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