公开(公告)号：US10666182B1

公开(公告)日：2020-05-26

申请号：US15947540

申请日：2018-04-06

Applicant: Caterpillar Inc.

Inventor： Carlos E. Nino Baron ,  Ahmed Khalil ,  Jackson Wai ,  Jesse R. Gerdes ,  Sangameshwar Sonth ,  Amir Saad

IPC: H02P25/08 ,  H02P21/18 ,  H02P21/14 ,  H02P6/185

Abstract: A control system for a rotary electric machine includes a controller configured to generate dynamic input current data based upon a dynamic analysis of self flux data, mutual flux data, and saturation scaling factor data. Upon generating a torque request, the controller is configured to determine a desired electrical input based upon the dynamic input current data to generate the desired output torque. The desired electrical input includes a magnitude and duration of an electrical pulse and a desired angular position of the rotor of the rotary electric machine relative to the stator of the machine. The controller determines an angular position of the rotor and generates an operating command to generate the desired electrical input at the desired angular position of the rotor to propel the rotary electric machine and generate the desired output torque. A rotary electric machine and method of operating same are provided.

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：US09625512B2

公开(公告)日：2017-04-18

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.

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。