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公开(公告)号：US09787210B2
公开(公告)日：2017-10-10
申请号：US14596351
申请日：2015-01-14
Applicant: Rockwell Automation Technologies, Inc.
Inventor： Yogesh P. Patel , Rangarajan Tallam , Brian P. Brown , Jiangang Hu , James J. Campbell
CPC classification number: H02M5/44 , H02H9/001 , H02H9/002 , H02M7/125 , H02M2001/123
Abstract: Precharging systems and methods are presented for precharging a DC bus circuit in a power conversion system, in which precharging current is connected through a precharging resistance coupled between only a single AC input line and the DC bus circuit when the DC bus voltage is less than a non-zero threshold, and a controller individually activates controllable rectifier switching devices when the DC bus voltages greater than or equal to the threshold using DC gating or pulse width modulation to selectively provide a bypass path around the precharging resistance for normal load currents in the power conversion system.
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公开(公告)号：US20170178782A1
公开(公告)日：2017-06-22
申请号：US14972588
申请日：2015-12-17
Applicant: Rockwell Automation Technologies, Inc.
Inventor： Xikai Sun , Wei Qian , Shaofeng Zhang , Haihui Lu , Lixiang Wei , Yuan Xiao , Jiangang Hu , Richard A. Lukaszewski
CPC classification number: H01F27/085 , H01F3/10 , H01F27/306
Abstract: For reducing volume requirements and magnetic flux leakage, a compact inductor includes a first planar core with a first core thickness along a first axis orthogonal to a plane of the first planar core. In addition, the inductor includes a second planar core disposed parallel to the first planar core with a second core thickness along the first axis. The inductor further includes a plurality of electrical windings disposed between and adjacent to an inside plane of the first planar core and an inside plane of the second planar core. The electrical windings may include insulated electrical wires. No magnetic teeth may be disposed between the first planar core and the second planar core. The first axis is parallel to a magnetic axis of each electrical winding.
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公开(公告)号：US20170131340A1
公开(公告)日：2017-05-11
申请号：US15409919
申请日：2017-01-19
Applicant: Rockwell Automation Technologies, Inc.
Inventor： Rangarajan M. Tallam , Jiangang Hu , Brian P. Brown
CPC classification number: G01R31/025 , B60L3/0069 , B60L3/04 , B60L3/12 , B60L2220/42 , G01R31/40 , H02H3/16 , H02H7/1216 , H02M5/458 , Y02T10/646
Abstract: Power conversion systems, disclosed examples include power conversion systems, ground fault detection apparatus and methods to detect and identify ground faults in a power conversion system using AC coupling to sense a system voltage to determine a leakage flux linkage, and to identify a faulted converter phase based on a phase shift angle of the leakage flux linkage.
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公开(公告)号：US20160204709A1
公开(公告)日：2016-07-14
申请号：US14596351
申请日：2015-01-14
Applicant: Rockwell Automation Technologies, Inc.
Inventor： Yogesh P. Patel , Rangarajan Tallam , Brian P. Brown , Jiangang Hu , James J. Campbell
IPC: H02M5/44
CPC classification number: H02M5/44 , H02H9/001 , H02H9/002 , H02M7/125 , H02M2001/123
Abstract: Precharging systems and methods are presented for precharging a DC bus circuit in a power conversion system, in which precharging current is connected through a precharging resistance coupled between only a single AC input line and the DC bus circuit when the DC bus voltage is less than a non-zero threshold, and a controller individually activates controllable rectifier switching devices when the DC bus voltages greater than or equal to the threshold using DC gating or pulse width modulation to selectively provide a bypass path around the precharging resistance for normal load currents in the power conversion system.
Abstract translation: 提出了预充电系统和方法，用于对电力转换系统中的直流总线电路进行预充电，其中当直流母线电压小于一个时，预充电电流通过仅在单个AC输入线和直流总线电路之间耦合的预充电电阻来连接 非零阈值，并且当DC总线电压大于或等于阈值时，控制器单独激活可控整流器开关器件，使用DC门控或脉冲宽度调制，以选择性地为电源中的正常负载电流提供围绕预充电电阻的旁路 转换系统
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公开(公告)号：US20240345178A1
公开(公告)日：2024-10-17
申请号：US18299655
申请日：2023-04-12
Applicant: Rockwell Automation Technologies, Inc.
Inventor： John Zhuo Liu , Jasper Hao Yang , Julie Haihui Lu , Yujia Cui , Kadir Liano , Tim Liu , George Cheng , Navid Zargari , Bijan SayyarRodsari , Jiangang Hu
CPC classification number: G01R31/52 , G01R31/088
Abstract: For transformer fault detection, a method generates a transition region that separates a health region and a fault region in a two-dimensional feature space of two feature indicators for a plurality of operation conditions using a fault detection model for a power transformer type. The method determines the feature indicators of a given power transformer of the power transformer type. The method determines whether the feature indicators in the transition region satisfy a fault condition. The method predicts an inter-turn short fault for the given power transformer in response to satisfying the fault condition or the feature indicators being in the fault region.
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Patent Agency Ranking
公开(公告)号：US20230400845A1
公开(公告)日：2023-12-14
申请号：US17839004
申请日：2022-06-13
Applicant: Rockwell Automation Technologies, Inc.
Inventor： Yujia Cui , Jiangang Hu , Rangarajan Tallam , Robert J. Miklosovic
IPC: G05B23/02
CPC classification number: G05B23/0283
Abstract: An industrial system and a method including using a processor, estimating a reliability of a component of an industrial system using a prognostic model program, using the processor, updating weighting vector parameters of the prognostic model program based on collected data and a previous reliability estimate using machine learning, and using the processor, selectively generating a warning based on comparison of the reliability with a threshold and/or deviation of weighting vector parameters.
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公开(公告)号：US10725116B2
公开(公告)日：2020-07-28
申请号：US15861886
申请日：2018-01-04
Applicant: Rockwell Automation Technologies, Inc.
Inventor： Lixiang Wei , Jiangang Hu , Jeffrey D. McGuire
IPC: H02P29/024 , G01R31/50 , G06F17/11 , H02H7/08
Abstract: A method and controller to automatically determine a grounding condition of a motor drive, in which an inverter is operated at a predetermined frequency while a load resistor is connected between a single phase of a motor drive inverter output and a reference node, a leakage flux linkage value is computed according to a neutral-ground voltage of the motor drive, and a processor determines whether the motor drive is solid grounded, high-resistance grounded, or floating according to the leakage flux linkage value. In certain examples, the processor automatically turns the inverter off while the load resistor is connected between the single phase of the inverter output and the reference node, and automatically determines whether the motor drive is delta corner grounded according to the neutral-ground voltage.
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公开(公告)号：US10564207B2
公开(公告)日：2020-02-18
申请号：US15409919
申请日：2017-01-19
Applicant: Rockwell Automation Technologies, Inc.
Inventor： Rangarajan M. Tallam , Jiangang Hu , Brian P. Brown
IPC: G01R27/18 , G01R31/02 , H02M5/458 , G01R31/40 , B60L3/12 , H02H3/16 , B60L3/00 , B60L3/04 , H02H7/12
Abstract: Power conversion systems, ground fault detection apparatus and methods to detect and identify ground faults in a power conversion system using AC coupling to sense a system voltage to determine a leakage flux linkage, and to identify a faulted converter phase based on a phase shift angle of the leakage flux linkage.
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公开(公告)号：US10302688B2
公开(公告)日：2019-05-28
申请号：US15410000
申请日：2017-01-19
Applicant: Rockwell Automation Technologies, Inc.
Inventor： Jiangang Hu , Zhijun Liu , Jeffrey D. McGuire , Lixiang Wei
IPC: G01R27/18 , G01R31/02 , G01R31/40 , B60L3/00 , B60L3/04 , B60L3/12 , G01R31/08 , H02H3/16 , H02H7/12
Abstract: Power conversion systems, disclosed examples include power conversion systems, ground fault detection apparatus and methods to detect and identify ground faults in a power conversion system using AC coupling to sense a system voltage to determine a leakage flux linkage, and to identify a faulted converter phase based on a phase shift angle of the leakage flux linkage.
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公开(公告)号：US20170131341A1
公开(公告)日：2017-05-11
申请号：US15410000
申请日：2017-01-19
Applicant: Rockwell Automation Technologies, Inc.
Inventor： Jiangang Hu , Zhijun Liu , Jeffrey D. McGuire , Lixiang Wei
CPC classification number: G01R31/025 , B60L3/0069 , B60L3/04 , B60L3/12 , B60L2220/42 , G01R31/086 , G01R31/40 , H02H3/16 , H02H7/1216 , Y02T10/646
Abstract: Power conversion systems, disclosed examples include power conversion systems, ground fault detection apparatus and methods to detect and identify ground faults in a power conversion system using AC coupling to sense a system voltage to determine a leakage flux linkage, and to identify a faulted converter phase based on a phase shift angle of the leakage flux linkage.
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