公开(公告)号：US20220075005A1

公开(公告)日：2022-03-10

申请号：US17484262

申请日：2021-09-24

Applicant: Eaton Intelligent Power Limited

Inventor： Santosh Kumar Sharma ,  Abhilash Pani ,  Steven Andrew Dimino ,  Mark Alan Verheyen

IPC: G01R31/52 ,  G01R31/34 ,  G01R31/72 ,  G01R31/42

Abstract: A system and method for detecting a phase-to-ground fault in an AC electrical machine operates to receive measurements of three-phase voltages and currents provided to the AC electrical machine, compute at least one of a zero sequence component and a negative sequence component of voltage and current from the three-phase voltages and currents, and calculate a fault severity index (FSI) based on the zero or negative sequence component of voltage and current, so as to identify a phase-to-ground fault in the AC electrical machine. Calculating the FSI further includes determining a total value of the zero or negative sequence current, determining a noise-contributed value of the zero or negative sequence current included in the total value, determining a compensated value of the zero or negative sequence current based on the total value and the noise-contributed value, and calculating the FSI based on the compensated value.

公开(公告)号：US20220025891A1

公开(公告)日：2022-01-27

申请号：US17380531

申请日：2021-07-20

Applicant: Eaton Intelligent Power Limited

Inventor： Sneha Abhyankar ,  Gurmeet Singh ,  Santosh Kr Sharma ,  Swetha Prakash ,  Amresh Kumar ,  Ragini Jain ,  Steven Andrew Dimino ,  David Glenn Loucks

IPC: F04D15/00 ,  F04D13/06

Abstract: A control system includes: a controller configured to: access an estimated torque and estimated speed of a motor mechanically coupled to an impeller of a centrifugal machine; access at least one set of pre-determined performance data values associated with a known speed of the impeller, where each set of pre-determined performance data values includes: a plurality of flowrate values and a plurality of performance metric values; determine an operating point of the centrifugal machine based on the estimated torque, the estimated speed, and the at least one set of pre-determined performance data values; compare the determined operating point to a best efficiency point (BEP) associated with the centrifugal machine; and determine whether to change the speed of the motor based on the comparison.

公开(公告)号：US11762038B2

公开(公告)日：2023-09-19

申请号：US17484262

申请日：2021-09-24

Applicant: Eaton Intelligent Power Limited

Inventor： Santosh Kumar Sharma ,  Abhilash Pani ,  Steven Andrew Dimino ,  Mark Alan Verheyen

IPC: G01R31/52 ,  G01R31/34 ,  G01R31/72 ,  G01R31/42

CPC classification number: G01R31/52 ,  G01R31/34 ,  G01R31/346 ,  G01R31/42 ,  G01R31/72

Abstract: A system and method for detecting a phase-to-ground fault in an AC electrical machine operates to receive measurements of three-phase voltages and currents provided to the AC electrical machine, compute at least one of a zero sequence component and a negative sequence component of voltage and current from the three-phase voltages and currents, and calculate a fault severity index (FSI) based on the zero or negative sequence component of voltage and current, so as to identify a phase-to-ground fault in the AC electrical machine. Calculating the FSI further includes determining a total value of the zero or negative sequence current, determining a noise-contributed value of the zero or negative sequence current included in the total value, determining a compensated value of the zero or negative sequence current based on the total value and the noise-contributed value, and calculating the FSI based on the compensated value.

公开(公告)号：US20240186931A1

公开(公告)日：2024-06-06

申请号：US18075002

申请日：2022-12-05

Applicant: Eaton Intelligent Power Limited

Inventor： Steven Andrew Dimino ,  Zhe Zhang

IPC: H02P23/14 ,  B65G23/00

CPC classification number: H02P23/14 ,  B65G23/00

Abstract: A control apparatus for a conveying system includes: a control module configured to control a power converter coupled to a motor, and a modification module. The modification module is configured to: estimate a size parameter of an item conveyed by the motor, determine if a hold command is received; and if a hold command is received, modify one or more parameters of the control module based on the estimated size parameter of the item to thereby hold a rotor of the motor at a rotor hold position.

公开(公告)号：US11221377B2

公开(公告)日：2022-01-11

申请号：US15380724

申请日：2016-12-15

Applicant: Eaton Intelligent Power Limited

Inventor： Santosh Kumar Sharma ,  Abhilash Pani ,  Steven Andrew Dimino ,  Mark Alan Verheyen

IPC: G01R31/52 ,  G01R31/34 ,  G01R31/72 ,  G01R31/42

Abstract: A system and method for detecting a phase-to-ground fault in an AC electrical machine operates to receive measurements of three-phase voltages and currents provided to the AC electrical machine, compute at least one of a zero sequence component and a negative sequence component of voltage and current from the three-phase voltages and currents, and calculate a fault severity index (FSI) based on the zero or negative sequence component of voltage and current, so as to identify a phase-to-ground fault in the AC electrical machine. Calculating the FSI further includes determining a total value of the zero or negative sequence current, determining a noise-contributed value of the zero or negative sequence current included in the total value, determining a compensated value of the zero or negative sequence current based on the total value and the noise-contributed value, and calculating the FSI based on the compensated value.