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公开(公告)号：US20190242934A1
公开(公告)日：2019-08-08
申请号：US15891272
申请日：2018-02-07
Applicant: Rockwell Automation Technologies, Inc.
Inventor： David Leggate , Russel J. Kerkman , Brian J. Seibel
IPC: G01R27/08 , H03K7/08 , G06F1/025 , H02M7/5387
Abstract: For calculating load resistance, a pulse generation module drives a pulse width modulation (PWM) inverter in response to a control voltage. The PWM inverter includes a U phase pole, a V phase pole, and a W phase pole. Each U, V, and W phase pole includes an upper pole device and a lower pole device. The PWM inverter turns off the U phase pole, turns on the W upper pole device, turns off the W lower pole device, and applies the control voltage to the V upper pole device and the V lower pole device. A forward drop correction module corrects the control voltage based on a feedforward compensation voltage determined from a forward voltage drop. A load resistance module calculates a load resistance for a load based on an average control voltage, an average bus voltage, and an average load feedback current.
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12.发明授权Phase lock loop with cascade tracking filters for synchronizing an electric grid 有权具有用于同步电网的级联跟踪滤波器的锁相环公开(公告)号：US09270286B2
公开(公告)日：2016-02-23
申请号：US14319469
申请日：2014-06-30
Applicant: ROCKWELL AUTOMATION TECHNOLOGIES, INC.
Inventor： Ahmed Mohamed Sayed Ahmed , Russel J. Kerkman , Brian J. Seibel
Abstract: Present embodiments relate to a method for synchronizing an electric grid. The method includes receiving a phase voltage of the electric grid. The method further includes determining one or more disturbance frequencies in the phase voltage via a plurality of sequential tracking filters, wherein each of the plurality of tracking filters corresponds to a harmonic of the received phase voltage. The method further includes removing the disturbance frequencies components sequentially to produce a minimally distorted frequency, and performing a PLL operation on the clean frequency to determine a phase angle of the frequency.
Abstract translation: 本实施例涉及一种同步电网的方法。 该方法包括接收电网的相电压。 该方法还包括经由多个顺序跟踪滤波器来确定相电压中的一个或多个扰动频率，其中多个跟踪滤波器中的每一个对应于接收相电压的谐波。 该方法还包括顺序地去除干扰频率分量以产生最小失真的频率，以及对干净频率执行PLL操作以确定频率的相位角。
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公开(公告)号：US09124245B2
公开(公告)日：2015-09-01
申请号：US14551333
申请日：2014-11-24
Applicant: Rockwell Automation Technologies, Inc.
Inventor： Russel J. Kerkman , Ahmed Mohamed Sayed Ahmed , Brian J. Seibel
CPC classification number: H03H11/04 , G01R25/00 , H02M1/4233 , H03F1/565 , H03H7/38 , Y02B70/126
Abstract: A phase angle detector with a PLL, a power converter, and a method for reducing offsets in an input signal, in which an adaptive offset processor selectively removes a DC offset component from the input signal to generate a modified signal including a fundamental frequency component and higher order harmonics of the input signal with the DC offset component removed, and the PLL provides a phase angle signal at least partially according to the modified signal.
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公开(公告)号：US20250044773A1
公开(公告)日：2025-02-06
申请号：US18228398
申请日：2023-07-31
Applicant: Rockwell Automation Technologies, Inc.
Inventor： David C. Mazur , Nathaniel S. Sandler , Jonathan A. Mills , Richard Resseguie , Brian J. Seibel , Eugene Mourzine , Jakob Methfessel , Lisa D. Hughes , Kurt D. Sneen
IPC: G05B19/418
Abstract: Systems and methods described herein may involve monitoring an asset based on multiple device models representing the asset as operated in different process states. The systems and methods may involve receiving acquired data corresponding to a current operation of the asset and identifying a device model of the multiple device models based on the acquired data. The device model may correspond to a process state of the different process states, an operational parameter that the asset is operated in, and a training status indication.
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公开(公告)号：US11671037B1
公开(公告)日：2023-06-06
申请号：US17737826
申请日：2022-05-05
Applicant: Rockwell Automation Technologies, Inc.
Inventor： Bing Li , Brian J. Seibel
IPC: H02P6/08 , H02P25/022
CPC classification number: H02P6/08 , H02P25/022 , H02P2207/055
Abstract: For improving Maximum Torque per Amps (MTPA) control, a method generates an offline MTPA curve based on an autotune test for a motor, which is used as offline MTPA control in order to run a motor at a high efficiency operation point. Another online method generates a search zone for the MTPA curve for a given torque point. The search zone includes an upper D-axis reference current and a lower D-axis reference current for the given torque point. The method iteratively modifies a D-axis reference current between the upper D-axis reference current and the lower D-axis reference current of the search zone. The method modifies a Q-axis reference current to output the given torque. The method updates a corresponding current pair of the given torque point to the modified D-axis reference current and the modified Q-axis reference current with a lowest current amplitude to improve MTPA control of the motor.
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Patent Agency Ranking
公开(公告)号：US20200228029A1
公开(公告)日：2020-07-16
申请号：US16789899
申请日：2020-02-13
Applicant: Rockwell Automation Technologies, Inc.
Inventor： Jacob M. Lamb , Brian J. Seibel , Timothy M. Rowan
IPC: H02M7/5395 , H02P27/08 , H02M1/088
Abstract: Power conversion systems and a controller thereof include a processing system that generates inverter switching control signals at a switching frequency, and transitions the switching frequency from a starting frequency to a target frequency over an integer number N blocks. The individual blocks include an integer number M subblocks with a starting frequency subblock in which the processing system generates the switching control signals at the starting frequency, and a target frequency subblock in which the processing system generates the switching control signals at the target frequency. The processing system operates the inverter at multiple demanded voltage values for multiple characterized switching frequencies, measures and records a corresponding inverter output current value for each of the demanded voltage values, creates and stores a lookup table for adjusted demand voltages at each of the characterized switching frequencies, and operate the inverter according to the adjusted demand voltages.
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公开(公告)号：US09973102B1
公开(公告)日：2018-05-15
申请号：US15408757
申请日：2017-01-18
Applicant: Rockwell Automation Technologies, Inc.
Inventor： Prathamesh R. Vadhavkar , Brian J. Seibel , Ahmed Sayed Ahmed
CPC classification number: H02M5/458 , G05B19/042 , G05B2219/41432 , H02M1/084 , H02M1/12 , H02M1/126 , H02M1/32 , H02M1/42 , H02M1/4233 , H02M5/4585 , H02M2001/0009 , H02P27/08 , H02P29/032
Abstract: A power conversion system can be implemented to reduce load disturbances on a DC bus which may be caused by load activity, such as a motor starting, stopping and/or ramping up or down. In one aspect, the power conversion system can receive externally supplied multi-phase AC electric power, such as three-phase power from a power grid, and use a converter circuit to generate the DC bus. The power conversion system can then use an inverter circuit to generate multi-phase AC electric power from the DC bus for driving the load with adjustable frequencies and/or amplitudes as desired. The power conversion system can receive feedback signals to sense the load activity and adjust the converter and/or inverter circuits accordingly to reduce the load disturbances on the DC bus.
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公开(公告)号：US20170331389A1
公开(公告)日：2017-11-16
申请号：US15152961
申请日：2016-05-12
Applicant: Rockwell Automation Technologies, Inc.
Inventor： Ahmed Mohamed Sayed Ahmed , Prathamesh R. Vadhavkar , Brian J. Seibel
CPC classification number: H02M5/4585 , H02M1/08 , H02M1/32 , H02M5/42 , H02M5/453 , H02M5/458 , H02M2001/325 , H02P23/0004 , H02P27/06 , H02P29/00 , H02P2201/03
Abstract: Power conversion systems and methods are provided for ride through of abnormal grid conditions or disturbances, in which a system rectifier is operated in a first mode to regulate a DC voltage of an intermediate DC circuit, an inverter is operated in the first mode to convert DC power from the intermediate DC circuit to provide AC output power to drive a load. In response to detecting an abnormal grid condition, the system changes to a second mode in which the rectifier is turned off and the inverter regulates the DC voltage of the intermediate DC circuit using power from the load.
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公开(公告)号：US09535133B2
公开(公告)日：2017-01-03
申请号：US14071911
申请日：2013-11-05
Applicant: ROCKWELL AUTOMATION TECHNOLOGIES, INC.
Inventor： Ahmed Mohamed Sayed Ahmed , Brian J. Seibel , Russel Kerkman
CPC classification number: G01R31/40 , H02J3/24 , H02J9/06 , H02J13/0006 , Y02B70/3291 , Y02B90/222 , Y04S20/12 , Y04S20/248
Abstract: Described herein are methods, systems, and apparatuses for determining sag in a signal. In one example, a method of tracking sag in a signal includes, when in an initial state, monitoring for when the signal transitions to a sag state based at least on an output of a tracking filter. In response to the signal transitioning to the sag state, increasing a bandwidth of the tracking filter and, when in the sag state, monitoring for when the signal transitions to a recovering state. The method further includes, in response to the signal transitioning to the recovering state, decreasing the bandwidth of the tracking filter.
Abstract translation: 这里描述了用于确定信号中的下垂的方法，系统和装置。 在一个示例中，跟踪信号中的下垂的方法包括：当处于初始状态时，至少基于跟踪滤波器的输出监视信号什么时候转变到松弛状态。 响应于信号转换到下垂状态，增加跟踪滤波器的带宽，并且当处于下垂状态时，监视信号何时转换到恢复状态。 该方法还包括响应于信号转换到恢复状态，减小跟踪滤波器的带宽。
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公开(公告)号：US08825421B2
公开(公告)日：2014-09-02
申请号：US13735524
申请日：2013-01-07
Applicant: Rockwell Automation Technologies, Inc.
Inventor： Brian J. Seibel , Russel J. Kerkman , Carlos Daniel Rodriquez-Valdez
Abstract: Methods and systems for tracking an electronic signal corresponding to an operating frequency of an electronic component are provided. A method may include sampling the signal to determine previous and current time samples of the signal. A frequency of interest in the signal may also be pre-warped to decrease adverse warping effects resulting from processing signals having relatively higher operating frequencies. The previous and current time samples of the signals, along with the pre-warped frequency of interest, may be input into a digital tracking filter. The digital tracking filter may be configured to execute one or more algorithms on the previous and current time samples and the pre-warped frequency of interest to estimate a current operating frequency.
Abstract translation: 提供了用于跟踪对应于电子部件的工作频率的电子信号的方法和系统。 方法可以包括对信号进行采样以确定信号的先前和当前时间采样。 信号中感兴趣的频率也可以被预先翘曲，以减少由具有相对更高的工作频率的信号产生的不利的翘曲效应。 信号的先前和当前时间样本以及感兴趣的预翘曲频率可以被输入到数字跟踪滤波器中。 数字跟踪滤波器可以被配置为对先前和当前时间采样和感兴趣的预翘曲频率执行一个或多个算法来估计当前工作频率。
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