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1. 发明授权

US11368109B2 Power conversion system with PWM carrier transition smoothing and autotuning 有权
公开(公告)号：US11368109B2
公开(公告)日：2022-06-21
申请号：US16789899
申请日：2020-02-13
申请人： Rockwell Automation Technologies, Inc.
发明人： Jacob M. Lamb , Brian J. Seibel , Timothy M. Rowan
IPC分类号： H02M7/5395 , H02M1/088 , H02P27/08 , H02M5/458 , H02M1/00
摘要： 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.

2. 发明授权

US10601343B1 Power conversion system with PWM carrier transition smoothing and autotuning 有权
公开(公告)号：US10601343B1
公开(公告)日：2020-03-24
申请号：US16248966
申请日：2019-01-16
申请人： Rockwell Automation Technologies, Inc.
发明人： Jacob M. Lamb , Brian J. Seibel , Timothy M. Rowan
IPC分类号： H02M7/5395 , H02M1/088 , H02P27/08 , H02M1/00 , H02M5/458
摘要： 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.

3. 发明授权

US09973103B1 System for power conversion with reactive power compensation 有权
公开(公告)号：US09973103B1
公开(公告)日：2018-05-15
申请号：US15408786
申请日：2017-01-18
申请人： Rockwell Automation Technologies, Inc.
发明人： Prathamesh R. Vadhavkar , Brian J. Seibel , Russel J. Kerkman
IPC分类号： H02M5/458 , H02M1/42 , H02M1/12 , H02M1/32 , H02P27/08 , G05B19/042
CPC分类号： 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
摘要： A power conversion system can be implemented to actively control a load while compensating for reactive power which may be sourced or consumed by an input filter circuit. 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 a 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 input filter circuit can be coupled to the converter circuit to filter out harmonics resulting from switching of the converter circuit. The power conversion system can receive feedback signals which may be used to determine reactive power sourced or consumed by the filter circuit, and can adjust the converter circuit to compensate for such reactive power.

4. 发明申请

US20150123700A1 INDUSTRIAL SYSTEM PHASE SAG DETECTION 有权
标题翻译：工业系统相位检测
公开(公告)号：US20150123700A1
公开(公告)日：2015-05-07
申请号：US14071911
申请日：2013-11-05
申请人： ROCKWELL AUTOMATION TECHNOLOGIES, INC.
发明人： Ahmed Mohamed sayed ahmed , Brian J. Seibel , Russel Kerkman
IPC分类号： G01R31/40
CPC分类号： G01R31/40 , H02J3/24 , H02J9/06 , H02J13/0006 , Y02B70/3291 , Y02B90/222 , Y04S20/12 , Y04S20/248
摘要： 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.
摘要翻译：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。

5. 发明授权

US10527661B2 Calculating a load resistance 有权
公开(公告)号：US10527661B2
公开(公告)日：2020-01-07
申请号：US15891272
申请日：2018-02-07
申请人： Rockwell Automation Technologies, Inc.
发明人： David Leggate , Russel J. Kerkman , Brian J. Seibel
IPC分类号： G01R27/08 , H03K7/08 , G06F1/025 , H02M7/5387 , G01R21/127
摘要： 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.

6. 发明授权

US10389292B1 DC bus regulation using rectifier and inverter 有权
公开(公告)号：US10389292B1
公开(公告)日：2019-08-20
申请号：US15939741
申请日：2018-03-29
申请人： Rockwell Automation Technologies, Inc.
发明人： Jacob M. Lamb , Ahmed S. Mohamed Sayed Ahmed , Brian J. Seibel , Timothy M. Rowan
IPC分类号： H02P1/00 , H02P27/08 , H02P23/20 , H02M3/24
摘要： Power converters, controllers, methods and non-transitory computer readable mediums are presented, in which a processor operates a switching rectifier in a first mode to regulate a DC bus voltage signal using rectifier switching control for motoring rectifier operation when the measured DC bus voltage value is less than or equal to a first threshold value, operates the switching rectifier in a second mode to regulate the DC bus voltage signal using rectifier switching control for regenerative rectifier operation when the measured DC bus voltage value is greater than the first threshold value and less than or equal to a higher second threshold value, and operates an inverter in a third mode to regulate the DC bus voltage signal using inverter acceleration/deceleration control when the measured DC bus voltage value is greater than the second threshold value.

7. 发明授权

US09847733B2 Power conversion system with DC bus regulation for abnormal grid condition ride through 有权
公开(公告)号：US09847733B2
公开(公告)日：2017-12-19
申请号：US15152961
申请日：2016-05-12
申请人： Rockwell Automation Technologies, Inc.
发明人： Ahmed Mohamed Sayed Ahmed , Prathamesh R. Vadhavkar , Brian J. Seibel
IPC分类号： H02M5/45 , H02M5/458 , H02M1/08 , H02P23/00 , H02P27/06 , H02M5/42 , H02M5/453
CPC分类号： H02M5/4585 , H02M1/08 , H02M1/32 , H02M5/42 , H02M5/453 , H02M5/458 , H02M2001/325 , H02P23/0004 , H02P27/06 , H02P29/00 , H02P2201/03
摘要： 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.

8. 发明授权

US10541626B1 Power conversion system with PWM carrier emulation 有权
公开(公告)号：US10541626B1
公开(公告)日：2020-01-21
申请号：US16247634
申请日：2019-01-15
申请人： Rockwell Automation Technologies, Inc.
发明人： Jacob M. Lamb , Brian J. Seibel , Timothy M. Rowan , Lixiang Wei
IPC分类号： H02M5/45 , H02P27/06 , H02M7/5387 , H03K3/017 , H02P27/08 , H02M5/458
摘要： Power conversion systems and a controller thereof includes a first processing system that computes phase references for respective phase lines of an inverter according to a feedback value, a setpoint value, and a scaling factor to emulate a scaled frequency that is less than a switching frequency, and a second processing system that generates a carrier waveform having the switching frequency, receives the phase reference from the first processing system for each inverter phase line, and compares each phase reference with the carrier waveform to generate pulse width modulated switching control signals for switching devices of the inverter.

9. 发明申请

US20150381187A1 PHASE LOCK LOOP WITH CASCADE TRACKING FILTERS FOR SYNCHRONIZING AN ELECTRIC GRID 有权
标题翻译：用于同步电网的CASCADE跟踪滤波器的相位锁定环
公开(公告)号：US20150381187A1
公开(公告)日：2015-12-31
申请号：US14319469
申请日：2014-06-30
申请人： ROCKWELL AUTOMATION TECHNOLOGIES, INC.
发明人： Ahmed Mohamed Sayed Ahmed , Russel J. Kerkman , Brian J. Seibel
IPC分类号： H03L7/08 , H03L7/085
CPC分类号： H02J3/01 , H02J3/48 , Y02E40/40
摘要： 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.
摘要翻译：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。

10. 发明申请

US20130124125A1 DIGITAL IMPLEMENTATION OF A TRACKING FILTER 有权
标题翻译：跟踪过滤器的数字实现
公开(公告)号：US20130124125A1
公开(公告)日：2013-05-16
申请号：US13735524
申请日：2013-01-07
申请人： ROCKWELL AUTOMATION TECHNOLOGIES, INC.
发明人： Brian J. Seibel , Russel J. Kerkman , Carlos Daniel Rodriquez-Valdez
IPC分类号： G06F17/00
CPC分类号： G06F17/00 , G01R23/02
摘要： 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.
摘要翻译：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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