公开(公告)号：US09702938B2

公开(公告)日：2017-07-11

申请号：US14661193

申请日：2015-03-18

Applicant: Caterpillar Inc.

Inventor： Jesse R. Gerdes ,  Jackson Wai ,  Ahmed Khalil ,  Benjamin P. Gottemoller

IPC: H02P21/00 ,  G01R31/34 ,  B60L3/00

CPC classification number: G01R31/343 ,  B60L3/0061

Abstract: A method for detecting a phase imbalance of an electrical component in a machine due to an actual fault is provided. The method includes receiving electrical parameter values associated with a plurality of phases of an electrical component, detecting a phase imbalance in the plurality of phases, calculating an imbalance ratio of the plurality of phases, applying a plurality of conditions to the imbalance ratio and to the received input vector, the plurality of conditions being associated with an actual fault in the machine, and determining whether the detected phase imbalance is due to a controls induced imbalance in the machine or due to the actual fault in the electrical component of the machine when at least one of the plurality of conditions is met.

公开(公告)号：US20160274191A1

公开(公告)日：2016-09-22

申请号：US14661193

申请日：2015-03-18

Applicant: Caterpillar Inc.

Inventor： Jesse R. Gerdes ,  Jackson Wai ,  Ahmed Khalil ,  Benjamin P. Gottemoller

IPC: G01R31/34 ,  H02P23/14 ,  H02P23/00

CPC classification number: G01R31/343 ,  B60L3/0061

Abstract: A method for detecting a phase imbalance of an electrical component in a machine due to an actual fault is provided. The method includes receiving electrical parameter values associated with a plurality of phases of an electrical component, detecting a phase imbalance in the plurality of phases, calculating an imbalance ratio of the plurality of phases, applying a plurality of conditions to the imbalance ratio and to the received input vector, the plurality of conditions being associated with an actual fault in the machine, and determining whether the detected phase imbalance is due to a controls induced imbalance in the machine or due to the actual fault in the electrical component of the machine when at least one of the plurality of conditions is met.

Abstract translation: 提供了一种用于检测由于实际故障导致的机器中的电气部件的相位不平衡的方法。 该方法包括接收与电气部件的多个相位相关联的电参数值，检测多个相位中的相位不平衡，计算多个相位的不平衡比，将多个条件应用于不平衡比和 接收的输入向量，多个条件与机器中的实际故障相关联，并且确定检测到的相位不平衡是由于控制引起机器中的不平衡还是由​​于当机器的电气部件中的实际故障时 满足多种条件中的至少一种。

公开(公告)号：US20160031323A1

公开(公告)日：2016-02-04

申请号：US14879097

申请日：2015-10-09

Applicant: Caterpillar Inc.

Inventor： Benjamin P. Gottemoller

IPC: B60L3/00 ,  B60L7/14

CPC classification number: B60L3/003 ,  B60L3/0076 ,  B60L7/14

Abstract: The present disclosure is related to a method to control a contactor tip assembly associated with a grid of an electric drive system is provided. The contactor tip assembly includes at least one first contactor tip and at least one second contactor tip. The method includes introducing a delay signal associated with an operation of at least one of the first contactor tip and the second contactor tip. Further, the operation includes a closing event and an opening event thereof. The method also includes controlling the operation of the first and second contactor tips in an alternate manner. Further, a delay is present between a sequential operation of one of the first and second contactor tips and the other of the first and second contactor tips based, at least in part, on the introduced delay signal.

Abstract translation: 本公开涉及一种用于控制与电驱动系统的电网相关联的接触器末端组件的方法。 接触器尖端组件包括至少一个第一接触器尖端和至少一个第二接触器尖端。 该方法包括引入与第一接触器尖端和第二接触器尖端中的至少一个的操作相关联的延迟信号。 此外，操作包括关闭事件及其打开事件。 该方法还包括以替代方式来控制第一和第二接触器尖端的操作。 此外，至少部分地基于引入的延迟信号，在第一和第二接触器尖端之一的顺序操作与第一和第二接触器尖端中的另一个之间存在延迟。