公开(公告)号：US20190104205A1

公开(公告)日：2019-04-04

申请号：US15719925

申请日：2017-09-29

Applicant: Rockwell Automation Technologies, Inc.

Inventor： Dayin Xu ,  Zhenhuan Yuan ,  Robert H. Schmidt ,  Guolin Zhang ,  Scott D. Braun ,  Fuhua Ding

IPC: H04L29/06

CPC classification number: H04L69/26 ,  G05B19/4185 ,  H04L12/4625 ,  H04L45/302 ,  H04L49/35 ,  H04L67/12 ,  H04L69/18

Abstract: The subject matter disclosed herein describes a switch embedded in a motor controller and a network protocol executing on the switch to provide communication between devices connected to the motor controller in a motor drive application. The embedded switch is configured to communicate via separate ports with an external controller, a network interface for the motor controller, additional motor controllers, and with the motor or other devices mounted on the motor. The network protocol includes a first tier for data that requires deterministic delivery at a high data rate, a second tier for data that requires a high delivery rate but is also tolerant of some variation in delivery time, and a third tier for data that may be delivered at a slower data rate. The embedded switch receives data at any port, identifies the communication tier to which the data belongs, and delivers it to another port accordingly.

公开(公告)号：US20190101436A1

公开(公告)日：2019-04-04

申请号：US15719897

申请日：2017-09-29

Applicant: Rockwell Automation Technologies, Inc.

Inventor： Linglai Li ,  Zhenhuan Yuan ,  Kun Wei ,  Robert H. Schmidt ,  Michael J. Melfi ,  Brian Fast ,  Sunil R. Gaddam ,  Chris E. Gottlieb

IPC: G01H1/00 ,  H02K11/21

CPC classification number: G01H1/006 ,  G01R31/343 ,  H02H7/08 ,  H02K11/21 ,  H02P29/0241 ,  H02P29/032

Abstract: The subject matter disclosed herein describes a method and system to monitor and identify vibrations in a rotational mechanical system. Various fault conditions in a rotating machine operating at variable speeds may be identified, at least in part, by identifying the multiple of the fundamental frequency, or order, at which the vibration occurs. The orders of vibration present in a measured vibration signal may be determined by finding an order spectrum of a measured vibration signal in the position domain. A fault vector is generated from the order spectrum that identifies the magnitude of each order of vibration present in the measured vibration signal. The fault vector may be plotted on a radar chart to provide a visual indication of the type of fault present in the mechanical system. Evaluation models for each fault determines a probability and magnitude for each fault condition being present in the sampled vibration signal.

公开(公告)号：US09998030B2

公开(公告)日：2018-06-12

申请号：US14285497

申请日：2014-05-22

Applicant: ROCKWELL AUTOMATION TECHNOLOGIES, INC.

Inventor： Lixiang Wei ,  Russel J. Kerkman ,  Richard A. Lukaszewski ,  Haihui Lu ,  Zhenhuan Yuan

IPC: H02M7/537 ,  H02P9/00 ,  G05F1/67 ,  H02M1/32 ,  G01B3/52

CPC classification number: H02M7/537 ,  G01B3/52 ,  G05F1/67 ,  H02M1/32 ,  H02P9/007

Abstract: The present techniques include methods and systems for operating converter to maintain a lifespan of the converter. In some embodiments, the operating frequency of the converter may be increased such that stress may be reduced on the bond wires of the converter. More specifically, embodiments involve calculating the aging parameters for certain operating conditions of the converter operating in a maximum power point tracking (MPPT) mode and determining whether the MPPT operation results in aging the converter to a point which reduces the converter lifespan below a desired lifespan. If the MPPT operation reduces the converter lifespan below the desired lifespan, the frequency of the converter may be increased such that the converter may be controlled to operate at a percentage of MPPT. Thus, in some embodiments, power output may be optimized with respect to maintaining a desired lifespan of the converter.

公开(公告)号：US09880223B2

公开(公告)日：2018-01-30

申请号：US14295123

申请日：2014-06-03

Applicant: ROCKWELL AUTOMATION TECHNOLOGIES, INC.

Inventor： David M. Messersmith ,  Douglas J. Bader ,  Haihui Lu ,  Thomas A. Nondahl ,  Zhenhuan Yuan

IPC: G01R31/34 ,  H02P23/14 ,  G01R27/08 ,  G01R27/26

CPC classification number: G01R31/343 ,  G01R27/08 ,  G01R27/2611 ,  H02P23/14

Abstract: A method of estimating stator resistance of an induction motor is provided. The method includes applying voltage pulses through two phase paths of the motor for a plurality of electrical cycles to inject current in the motor, wherein the voltage pulses are applied until rotor flux of the motor is substantially stabilized and measuring stator voltage and stator current in response to the applied voltage pulses for each of the plurality of electrical cycles. The method also includes calculating the stator resistance based upon the measured stator voltages and the stator currents.

公开(公告)号：US09590547B2

公开(公告)日：2017-03-07

申请号：US14696648

申请日：2015-04-27

Applicant: Rockwell Automation Technologies, Inc.

Inventor： Haihui Lu ,  Zhenhuan Yuan ,  Lixiang Wei ,  Russel J. Kerkman ,  Richard Lukaszewski ,  Ahmed Mohamed Sayed Anmed

IPC: F03D9/00 ,  H02P9/00 ,  F03D7/02 ,  F03D7/04 ,  H02J3/38 ,  H02P9/10 ,  H02H7/06 ,  H02H7/12 ,  H02P101/15 ,  H02H9/00 ,  H02J3/00

CPC classification number: H02P9/006 ,  F03D7/0224 ,  F03D7/0284 ,  F03D7/0288 ,  F03D7/04 ,  F03D9/255 ,  H02H7/06 ,  H02H7/12 ,  H02H9/002 ,  H02J3/386 ,  H02J2003/001 ,  H02P9/007 ,  H02P9/102 ,  H02P9/48 ,  H02P2101/15 ,  Y02E10/723 ,  Y02E10/763

Abstract: A double fed induction generator (DFIG) converter, methods and computer readable mediums are presented in which rotor side current spikes are attenuated by selectively activating at least one series damping circuit to conduct current through a series damping circuit resistance coupled in series between one or more DFIG rotor leads and a grid side converter in response to a grid fault occurrence or a grid fault clearance, and selectively bypassing the series damping circuit resistance after activating the series damping circuit.

Abstract translation: 提出了一种双馈感应发电机（DFIG）转换器，方法和计算机可读介质，其中通过选择性地激活至少一个串联阻尼电路来使转子侧电流尖峰衰减，以将电流传导通过串联耦合在一个或多个 DFIG转子引线和电网侧转换器响应于电网故障发生或电网故障间隙，并且在启动串联阻尼电路之后选择性地旁路串联阻尼电路电阻。