公开(公告)号：US20160172997A1

公开(公告)日：2016-06-16

申请号：US14567298

申请日：2014-12-11

Applicant: Caterpillar Inc.

Inventor： Eric M. Andris ,  Robert W. Lindsey

IPC: H02M7/44

CPC classification number: H02M7/003 ,  H05K7/1432

Abstract: A modular inverter unit for an inverter for generating an alternating current (AC) output based on a direct current (DC) input is disclosed. The modular inverter unit includes an input terminal configured to receive the DC input. The modular inverter unit further includes a power semiconductor device communicably coupled to the input terminal and encapsulated within a potting material. The power semiconductor device is configured to generate the AC output. The modular inverter unit further includes an output terminal communicably coupled to the power semiconductor device and configured to supply the AC output.

Abstract translation: 公开了一种用于产生基于直流（DC）输入的交流（AC）输出的逆变器的模块化逆变器单元。 模块化逆变器单元包括被配置为接收DC输入的输入端子。 模块化逆变器单元还包括可通信地耦合到输入端并封装在灌封材料内的功率半导体器件。 功率半导体器件被配置为产生AC输出。 模块化逆变器单元还包括可通信地耦合到功率半导体器件并被配置为提供AC输出的输出端子。

公开(公告)号：US09637006B2

公开(公告)日：2017-05-02

申请号：US14447824

申请日：2014-07-31

Applicant: CATERPILLAR INC.

Inventor： Robert W. Lindsey ,  Donald John Gilmore

IPC: B60L1/00 ,  B60L3/00 ,  H02G3/00 ,  B60L11/08 ,  B60L11/12 ,  B60L11/18 ,  B60L15/02 ,  B60W20/00

CPC classification number: B60L11/08 ,  B60L1/00 ,  B60L11/12 ,  B60L11/1811 ,  B60L15/025 ,  B60L2200/40 ,  B60L2210/00 ,  B60L2240/527 ,  B60W20/00 ,  Y02T10/643 ,  Y02T10/7005 ,  Y02T10/7072 ,  Y02T10/7077 ,  Y02T90/127 ,  Y02T90/14

Abstract: An electrical system architecture for a mobile, electric hybrid machine includes a first bus configured to receive electric power at a first, selectively adjustable voltage from an electrical power source. A second bus is configured to receive electric power at a second voltage that is lower than the first voltage. A controller is configured to determine a desired magnitude of the second voltage for the second bus, produce a signal indicative of a magnitude of the first, selectively adjustable voltage that is a multiple of the desired magnitude of the second voltage, and adjust the magnitude of the first voltage in the first bus to the multiple of the desired magnitude of the second voltage. A fixed-ratio power converter is configured to convert the power at the first voltage in the first bus to the power at the second voltage in the second bus.

公开(公告)号：US08901760B2

公开(公告)日：2014-12-02

申请号：US13752012

申请日：2013-01-28

Applicant: Caterpillar Inc.

Inventor： Jackson Wai ,  Robert R. Sychra ,  Robert W. Lindsey ,  Thomas M. Sopko ,  Bruce H. Hein

IPC: H02P9/00 ,  B60L11/08

CPC classification number: B60L11/08 ,  B60L3/0061 ,  B60L3/12 ,  B60L15/20 ,  B60L2200/40 ,  B60L2210/30 ,  B60L2210/40 ,  B60L2240/421 ,  B60L2260/28 ,  Y02T10/645 ,  Y02T10/70 ,  Y02T10/7077 ,  Y02T10/7241 ,  Y02T10/7275

Abstract: A machine is described that includes an electric drive for propelling the machine along a ground surface. The machine includes an electric power supply system configured to deliver operating electrical power to the electric drive. The electric power system includes a first generator and a second generator. The electric power system also includes a first rectifier coupled to the first generator and having a first direct current (DC) output and a second rectifier coupled to the second generator and having a second DC output. Both the first DC output and the second DC output are coupled to the single DC bus, thereby providing an arrangement for the first rectifier and the second rectifier to simultaneously provide power to the single DC bus. The electrical power system also includes a first inverter/controller coupled to the single DC bus and configured to provide a controlled alternating current to a first motor.

Abstract translation: 描述了一种机器，其包括用于沿着地面推进机器的电驱动器。 该机器包括被配置为向电驱动器输送工作电力的电力供应系统。 电力系统包括第一发电机和第二发电机。 电力系统还包括耦合到第一发生器并具有第一直流（DC）输出的第一整流器和耦合到第二发生器并具有第二DC输出的第二整流器。 第一直流输出和第二直流输出都耦合到单个直流总线，从而为第一整流器和第二整流器提供同时向单个DC总线提供电力的布置。 电力系统还包括耦合到单个DC总线的第一逆变器/控制器，并且被配置为向第一电动机提供受控的交流电。

公开(公告)号：US09234931B2

公开(公告)日：2016-01-12

申请号：US13790906

申请日：2013-03-08

Applicant: CATERPILLAR INC.

Inventor： Robert W. Lindsey ,  Daniel D. Podany ,  Sangameshwar Sonth ,  Thomas M. Sopko ,  Richard G. Auch ,  Jason Miller

IPC: H02H9/00 ,  E01C23/14 ,  G01R31/02 ,  E01C19/22 ,  G01R31/00

CPC classification number: G01R31/025 ,  E01C19/22 ,  E01C2301/10 ,  G01R31/006

Abstract: A fault detection system for a machine having a plurality of electrical conducting elements insulated from a frame ground of the machine is disclosed. The fault detection system may include a high voltage DC power source, a positive high voltage bus connected to a positive terminal of the high voltage DC power source and providing high voltage electrical power to the plurality of electrical conducting elements, and a negative high voltage bus connected to a negative terminal of the high voltage DC power source and returning high voltage electrical power from the plurality of electrical conducting elements. At least one of the positive and negative high voltage buses may be selectively connected through a plurality of switches to plural zones of the electrical conducting elements, with each of the plural zones being electrically connected in parallel, and selectively connected to the high voltage DC power source by one of the plurality of switches. A low voltage DC power source may be configured to form part of a leakage current detector selectively connected through each of the plurality of switches to each of the plural zones for detecting leakage current between an electrical conducting element and the frame ground.

Abstract translation: 公开了一种用于机器的故障检测系统，其具有与机器的框架接地绝缘的多个导电元件。 故障检测系统可以包括高压直流电源，连接到高压直流电源的正端的正高压母线，并向多个导电元件提供高压电力，以及负高压母线 连接到高压直流电源的负极端子并从多个导电元件返回高压电力。 正极和负极高压母线中的至少一个可以通过多个开关选择性地连接到导电元件的多个区域，其中多个区域中的每一个并联电连接，并且选择性地连接到高压DC电力 源由多个开关中的一个开关。 低压DC电源可以被配置成形成漏电流检测器的一部分，该漏电流检测器通过多个开关中的每一个选择性地连接到多个区域中的每一个，以检测导电元件和框架接地之间的漏电流。

公开(公告)号：US20140210208A1

公开(公告)日：2014-07-31

申请号：US13752012

申请日：2013-01-28

Applicant: CATERPILLAR INC.

Inventor： Jackson Wai ,  Robert R. Sychra ,  Robert W. Lindsey ,  Thomas M. Sopko ,  Bruce H. Hein

IPC: B60L11/08

CPC classification number: B60L11/08 ,  B60L3/0061 ,  B60L3/12 ,  B60L15/20 ,  B60L2200/40 ,  B60L2210/30 ,  B60L2210/40 ,  B60L2240/421 ,  B60L2260/28 ,  Y02T10/645 ,  Y02T10/70 ,  Y02T10/7077 ,  Y02T10/7241 ,  Y02T10/7275

Abstract: A machine is described that includes an electric drive for propelling the machine along a ground surface. The machine includes an electric power supply system configured to deliver operating electrical power to the electric drive. The electric power system includes a first generator and a second generator. The electric power system also includes a first rectifier coupled to the first generator and having a first direct current (DC) output and a second rectifier coupled to the second generator and having a second DC output. Both the first DC output and the second DC output are coupled to the single DC bus, thereby providing an arrangement for the first rectifier and the second rectifier to simultaneously provide power to the single DC bus. The electrical power system also includes a first inverter/controller coupled to the single DC bus and configured to provide a controlled alternating current to a first motor.

Abstract translation: 描述了一种机器，其包括用于沿着地面推进机器的电驱动器。 该机器包括被配置为向电驱动器输送工作电力的电力供应系统。 电力系统包括第一发电机和第二发电机。 电力系统还包括耦合到第一发生器并具有第一直流（DC）输出的第一整流器和耦合到第二发生器并具有第二DC输出的第二整流器。 第一直流输出和第二直流输出都耦合到单个直流总线，从而为第一整流器和第二整流器提供同时向单个DC总线提供电力的布置。 电力系统还包括耦合到单个DC总线的第一逆变器/控制器，并且被配置为向第一电动机提供受控的交流电。