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公开(公告)号：US09960723B2
公开(公告)日：2018-05-01
申请号：US15173767
申请日：2016-06-06
Applicant: Rockwell Automation Technologies, Inc.
Inventor： Shaofeng Zhang , Haihui Lu , Yogesh P. Patel , Ahmed Mohamed Sayed Ahmed , Lixiang Wei , Richard Lukaszewski
CPC classification number: H02P27/06 , H02M1/126 , H02M1/32 , H02M1/36 , H02M5/4585 , H02M7/217 , H02M7/219 , H02M2001/0009 , Y02B70/1441
Abstract: Disclosed examples include power conversion systems, computer readable mediums and methods for mitigating input filter resonance, in which a controller operates an active front end (AFE) rectifier in a first mode to turn a single rectifier switching device on and off and measures a filter voltage or current signal while all of the rectifier switches are off. The controller determines a resonant frequency based on a transient response of the measured voltage or current signal, and selectively adjusts a rectifier control parameter to mitigate filter resonance based on the resonant frequency.
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公开(公告)号：US20160111967A1
公开(公告)日：2016-04-21
申请号：US14978571
申请日：2015-12-22
Applicant: Rockwell Automation Technologies, Inc.
Inventor： Lixiang Wei , Yuan Xiao , Haihui Lu , Douglas B. Weber
IPC: H02M5/458
CPC classification number: H02M5/458 , H02M7/49 , H02M2001/325
Abstract: Multilevel inverters, power cells and bypass methods are presented in which a power cell switching circuit is selectively disconnected from the power cell output, and a bypass which is closed to connect first and second cell output terminals to selectively bypass a power stage of a multilevel inverter, with an optional AC input switch to selectively disconnect the AC input from the power cell switching circuit during bypass.
Abstract translation: 提出了多电平逆变器，功率单元和旁路方法，其中功率单元开关电路与功率单元输出选择性地断开，并且闭合的旁路连接第一和第二单元输出端子以选择性地旁路多电平逆变器的功率级 具有可选的AC输入开关，用于在旁路期间选择性地断开AC电源与电源开关电路的输入。
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3.发明申请DOUBLE FED INDUCTION GENERATOR (DFIG) CONVERTER AND METHOD FOR IMPROVED GRID FAULT RIDETHROUGH 有权双电源感应发电机（DFIG）转换器和改进的电网故障的方法RIDETHROUGH公开(公告)号：US20150229257A1
公开(公告)日：2015-08-13
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 Ahmed
IPC: H02P9/00
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。
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4.发明申请公开(公告)号：US20140253055A1
公开(公告)日：2014-09-11
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
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.
Abstract translation: 本技术包括用于操作转换器以保持转换器寿命的方法和系统。 在一些实施例中，可以增加转换器的工作频率，使得可以在转换器的接合线上减小应力。 更具体地，实施例涉及为以最大功率点跟踪（MPPT）模式操作的转换器的某些操作条件计算老化参数，并且确定MPPT操作是否导致转换器老化到将转换器寿命降低到期望寿命以下的点 。 如果MPPT操作将转换器寿命降低到期望的寿命以下，则可以增加转换器的频率，使得可以将转换器控制为以MPPT的百分比进行操作。 因此，在一些实施例中，可以相对于维持转换器的期望寿命来优化功率输出。
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公开(公告)号：US10217555B2
公开(公告)日：2019-02-26
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
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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Patent Agency Ranking
公开(公告)号：US20140285230A1
公开(公告)日：2014-09-25
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
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.
Abstract translation: 提供了一种估计感应电动机的定子电阻的方法。 该方法包括通过电动机的两个相位路径施加电压脉冲多个电循环以在电动机中注入电流，其中施加电压脉冲直到电动机的转子磁通基本稳定并且响应于测量定子电压和定子电流 对于多个电循环中的每一个的施加的电压脉冲。 该方法还包括基于所测量的定子电压和定子电流来计算定子电阻。
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公开(公告)号：US11258388B1
公开(公告)日：2022-02-22
申请号：US16986936
申请日：2020-08-06
Applicant: Rockwell Automation Technologies, Inc.
Inventor： Lei Jin , Zhendong Zhang , Haihui Lu , Timothy M. Rowan
Abstract: A system may include an inverter configured to convert a direct current (DC) voltage to an alternating current (AC) voltage. The system may also include a control system communicatively coupled to the inverter. The control system may receive a torque current feedback from a motor and may generate, based on the torque current feedback, a command torque current and a command flux current. The control system may generate, based on the command torque current and the command flux current, a command torque voltage and a command flux voltage and may generate, based on a slip frequency and a rotor frequency, a command frequency. The control system may determine one or more operating parameters for the inverter based on the command frequency, the command torque voltage, and the command flux voltage and may control the inverter based on the one or more operating parameters.
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公开(公告)号：US11146165B2
公开(公告)日：2021-10-12
申请号：US16951912
申请日：2020-11-18
Applicant: Rockwell Automation Technologies, Inc.
Inventor： Lei Jin , Haihui Lu , Ahmed S. Mohamed Sayed Ahmed , Rob J Miklosovic
Abstract: For grid-connected power converter control, a method estimates a d-axis grid voltage from a d-axis reference current modified with a d-axis current and a q-axis current modified with a filter inductive reactance. The method generates a q-axis current error from a direct current (DC) voltage input and a DC bus voltage. The method estimates an observer q-axis grid voltage from a q-axis voltage output. The q-axis grid voltage observer estimates the q-axis grid voltage in a direct/quadrature (dq) reference frame equivalent to an ABC to DQ reference frame transform. The method determines a d-axis voltage output as a function of a d-axis current error and a q-axis current modified with a filter inductive reactance. The method determines a q-axis voltage output as a sum of the q-axis current controller output and the observer q-axis grid voltage.
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公开(公告)号：US20200303943A1
公开(公告)日：2020-09-24
申请号：US16357653
申请日：2019-03-19
Applicant: Rockwell Automation Technologies, Inc.
Inventor： Lei Jin , Haihui Lu , Karthik Palaniappan , Ahmed S. Mohamed Sayed Ahmed
Abstract: For grid-connected power converter control, a method estimates a d-axis grid voltage from a d-axis reference current modified with a d-axis current, and a q-axis current modified with a filter inductive reactance. The method generates a q-axis grid voltage from a direct current (DC) voltage input modified with the DC bus voltage modified with a notch filter to balance the voltage input and further reduced with the q-axis current. The method modifies the estimated d-axis grid voltage and the q-axis grid voltage by selectively removing second-order harmonics. The method further determines a d-axis voltage output and a q-axis voltage output as a function of the modified estimated d-axis grid voltage and the modified q-axis grid voltage.
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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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