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公开(公告)号：US20150256112A1
公开(公告)日：2015-09-10
申请号：US14721814
申请日：2015-05-26
Applicant: ROCKWELL AUTOMATION TECHNOLOGIES, INC.
Inventor： Bruce W. Weiss , Doyle F. Busse , Jeremy J. Keegan , Lixiang Wei , Michael W. Loth , Rangarajan M. Tallam , Yogesh Patel
Abstract: Systems and methods are provided for pre-charging the DC bus on a motor drive. Pre-charging techniques involve pre-charge circuitry including a manual switch, an automatic switch, and pre-charge control circuitry to switch the automatic switch between pre-charge and pre-charge bypass modes in response to an initialized pre-charge operation, input voltage sags, and so forth. In some embodiments, the pre-charge operation may be initialized by switching the manual switch closed. In some embodiments, the pre-charge operation may also be initialized by a detected voltage sag on the DC bus. The pre-charge circuitry may also be configured to disconnect to isolate a motor drive from the common DC bus under certain fault conditions.
Abstract translation: 提供的系统和方法用于在电机驱动器上对DC总线进行预充电。 预充电技术涉及预充电电路，包括手动开关，自动开关和预充电控制电路，以响应于初始化的预充电操作，输入的预充电和预充电旁路模式来切换自动开关 电压骤降等。 在一些实施例中，预充电操作可以通过关闭手动开关来初始化。 在一些实施例中，预充电操作也可以由DC总线上的检测到的电压暂降来初始化。 预充电电路还可以被配置为在某些故障条件下将电动机驱动器与公共DC总线隔离。
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公开(公告)号：US09092030B2
公开(公告)日：2015-07-28
申请号：US13803472
申请日：2013-03-14
Applicant: ROCKWELL AUTOMATION TECHNOLOGIES, INC.
Inventor： Bruce William Weiss , Robert Michael Michalski , Lixiang Wei , Garron Koch Morris , Brian Patrick Brown
CPC classification number: G05B23/0224 , G05B11/01 , G05D23/1917 , H02P31/00
Abstract: An electric motor drive system includes a fan configured to cool power electronic components of the electric motor drive system. The electric motor drive system also includes a temperature sensor disposed proximate an air inlet of the fan and configured to sense an ambient temperature of air entering the air inlet. In addition, the electric motor drive system includes a processor communicatively coupled to the temperature sensor and configured to determine at least one of a drive prognostic and a derating requirement based on the sensed ambient temperature.
Abstract translation: 电动机驱动系统包括：风扇，被配置为冷却所述电动机驱动系统的电力部件。 电动机驱动系统还包括温度传感器，该温度传感器设置在风扇的空气入口附近，并被配置为感测进入空气入口的空气的环境温度。 此外，电动机驱动系统包括通信地耦合到温度传感器并且被配置为基于感测到的环境温度来确定驱动器预测和降额要求中的至少一个的处理器。
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公开(公告)号：US09048755B2
公开(公告)日：2015-06-02
申请号：US13926810
申请日：2013-06-25
Applicant: ROCKWELL AUTOMATION TECHNOLOGIES, INC.
Inventor： Lixiang Wei , Richard A. Lukaszewski , Russel J. Kerkman
IPC: H02P7/00 , H02M7/537 , H02M7/5387 , H02P9/00 , H02P27/08
CPC classification number: H02M7/537 , H02M7/53875 , H02P9/007 , H02P27/08 , H02P29/68
Abstract: The present techniques include methods and systems for operating an inverter to maintain a lifespan of the inverter. In some embodiments, the switching frequency and/or the output current of the inverter may be changed such that stress may be reduced on the inverter bond wires of the inverter. More specifically, embodiments involve calculating the aging parameters for certain operating conditions of the inverter and determining whether the operating conditions result in aging the inverter to a point which reduces the inverter lifespan below a desired lifespan. If the operating conditions reduce the inverter lifespan below the desired lifespan, the switching frequency may be reduced to a lower or minimum switching frequency of the inverter and/or the output current of the inverter may be reduced to a maximum output current at the minimum switching frequency.
Abstract translation: 本技术包括用于操作逆变器以维持逆变器寿命的方法和系统。 在一些实施例中，可以改变逆变器的开关频率和/或输出电流，使得逆变器的反相器接合线上的应力可能减小。 更具体地，实施例涉及计算逆变器的某些工作条件的老化参数，并且确定操作条件是否导致变频器老化到将变频器寿命降低到期望寿命以下的时间点。 如果工作条件将变频器寿命降低到期望的寿命以下，开关频率可以降低到变频器的较低或最小开关频率，和/或可以将逆变器的输出电流降至最小输出电流 频率。
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24.发明申请SYSTEM FOR DETECTION OF A GROUND FAULT IN A HIGH RESISTANCE GROUND NETWORK 审中-公开用于在高电压接地网络中检测地面故障的系统公开(公告)号：US20140225625A1
公开(公告)日：2014-08-14
申请号：US14252556
申请日：2014-04-14
Applicant: ROCKWELL AUTOMATION TECHNOLOGIES, INC.
Inventor： Lixiang Wei , Zhijun Liu , Brian Patrick Brown , David W. Kirschnik , Russ J. Kerkman , Richard A. Lukaszewski , Gary Skibinski , Carlos Daniel Rodriguez-Valdez
IPC: G01R31/02
CPC classification number: G01R31/025 , H02H3/16 , H02H7/08
Abstract: A method is provided for detection of a ground fault in a high resistance network in a voltage source power conversion circuit comprising a power converter that converts incoming AC power to DC power applied to a DC bus and an inverter that converts DC power from the DC bus to output AC power. The method includes detecting a midpoint-to-ground voltage between a low side of the DC bus and a ground potential and detecting the presence of a ground fault in a high resistance network based upon the detected midpoint-to-ground voltage.
Abstract translation: 提供一种用于检测电压源电力转换电路中的高电阻网络中的接地故障的方法，该电压源电力转换电路包括将输入AC电力转换为施加到DC总线的DC电力的电力转换器和从DC总线转换DC电力的逆变器 输出交流电源。 该方法包括检测DC总线的低侧与地电位之间的中点到地电压，并且基于检测到的中点到地电压来检测高电阻网络中的接地故障的存在。
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公开(公告)号：US20130286702A1
公开(公告)日：2013-10-31
申请号：US13926810
申请日：2013-06-25
Applicant: ROCKWELL AUTOMATION TECHNOLOGIES, INC.
Inventor： Lixiang Wei , Richard A. Lukaszewski , Russel J. Kerkman
IPC: H02M7/537
CPC classification number: H02M7/537 , H02M7/53875 , H02P9/007 , H02P27/08 , H02P29/68
Abstract: The present techniques include methods and systems for operating an inverter to maintain a lifespan of the inverter. In some embodiments, the switching frequency and/or the output current of the inverter may be changed such that stress may be reduced on the inverter bond wires of the inverter. More specifically, embodiments involve calculating the aging parameters for certain operating conditions of the inverter and determining whether the operating conditions result in aging the inverter to a point which reduces the inverter lifespan below a desired lifespan. If the operating conditions reduce the inverter lifespan below the desired lifespan, the switching frequency may be reduced to a lower or minimum switching frequency of the inverter and/or the output current of the inverter may be reduced to a maximum output current at the minimum switching frequency.
Abstract translation: 本技术包括用于操作逆变器以维持逆变器寿命的方法和系统。 在一些实施例中，可以改变逆变器的开关频率和/或输出电流，使得逆变器的反相器接合线上的应力可能减小。 更具体地，实施例涉及计算逆变器的某些工作条件的老化参数，并且确定操作条件是否导致变频器老化到将变频器寿命降低到期望寿命以下的时间点。 如果工作条件将变频器寿命降低到期望的寿命以下，开关频率可以降低到变频器的较低或最小开关频率，和/或可以将逆变器的输出电流降至最小输出电流 频率。
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Patent Agency Ranking
公开(公告)号：US11641167B1
公开(公告)日：2023-05-02
申请号：US17575949
申请日：2022-01-14
Applicant: Rockwell Automation Technologies, Inc.
Inventor： James A. Ulrich , Lixiang Wei , Ahmed Mohamed Sayed Ahmed , Nickolay N. Guskov
Abstract: A transformerless parallel active rectifier system includes N multiphase common mode inductors directly connected to a shared multiphase AC input with no intervening transformer, and N active rectifiers coupled to respective ones of the N multiphase common mode inductors and having respective DC outputs coupled to a shared DC bus, where N is an integer greater than 1. The N active rectifiers have ground current regulators and are synchronized to provide DPWM switching control signals synchronized to one another to regulate their respective ground currents and concurrently regulate the shared DC bus voltage.
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公开(公告)号：US11336206B2
公开(公告)日：2022-05-17
申请号：US17029874
申请日：2020-09-23
Applicant: Rockwell Automation Technologies, Inc.
Inventor： Yujia Cui , Garron K. Morris , Lixiang Wei
IPC: H02M7/5387 , H02M1/088 , H02M5/458 , H02P27/08
Abstract: Methods, non-transitory computer readable mediums, and power conversion systems with a controller configured to provide modulated inverter switching control signals at a first switching frequency in response to an inverter current being greater than a first threshold and less than a second threshold, the second threshold being greater than the first threshold. The controller is further configured to provide the inverter switching control signals at a second switching frequency in response to the inverter current being greater than the second threshold, and to provide the inverter switching control signals at a third switching frequency in response to the inverter current being less than the first threshold, where the second switching frequency is less than the first switching frequency and the third switching frequency is greater than the first switching frequency.
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公开(公告)号：US20220065909A1
公开(公告)日：2022-03-03
申请号：US17010624
申请日：2020-09-02
Applicant: Rockwell Automation Technologies, Inc.
Inventor： Lixiang Wei , Bing Li , Jacob Lamb
Abstract: For motor stator resistance calculation, a method estimates an output voltage using a Direct Current (DC) bus voltage and a duty ratio for a motor drive at a first switching frequency and at least one second switching frequency. The method measures an output current at the first switching frequency and the at least one second switching frequency. The method calculates a first stator resistance for the first switching frequency and at least one second stator resistance for the at least one second switching frequency. The method estimates a stator resistance at a DC condition based on the first stator resistance and the at least one second stator resistance. The method sets a dynamic compensation based on a stator resistance error between the first switching frequency and the at least one second switching frequency.
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29.发明授权公开(公告)号：US10811990B1
公开(公告)日：2020-10-20
申请号：US16370503
申请日：2019-03-29
Applicant: Rockwell Automation Technologies, Inc.
Inventor： Ahmed S. Mohamed Sayed Ahmed , Lixiang Wei , Ehsan Al-Nabi , Nirav Patel , Sang Woo Nam
Abstract: An active rectifier includes first and second DC nodes, a switching circuit, and a controller configured to compute a voltage reference according to a load signal of the DC output, and a non-linear relationship between a load condition of the DC output and a DC bus voltage at the DC output, and to generate rectifier switching control signals according to the voltage reference to cause the switching circuit to convert AC input power from the AC input to control the DC bus voltage at the DC output.
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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
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.
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