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公开(公告)号：US20160254760A1
公开(公告)日：2016-09-01
申请号：US14634737
申请日：2015-02-28
Applicant: Rockwell Automation Technologies, Inc.
Inventor： Zhendong Zhang , Takayoshi Matsuo , David Leggate , Timothy M. Rowan , Russel J. Kerkman , Bing Li
IPC: H02M7/48
CPC classification number: H02M7/48 , H02M7/53871 , H02M7/5395 , H02M2001/0009
Abstract: Methods and apparatus are presented for sampling low side inverter phase currents, in which current sampling is selectively delayed in a given PWM cycle by a non-zero sampling delay time value from a nominal sample time if the middle pulse width value is less than a non-zero first threshold to facilitate adequate signal settling for accurate current measurement, and if a middle total continuous on-time near the end of the given PWM cycle is less than a non-zero second threshold, the middle total continuous on-time is selectively extended by adding a non-zero adjustment offset time value to a middle pulse width value for a next PWM cycle.
Abstract translation: 提出了用于采样低侧逆变器相电流的方法和装置，其中如果中间脉冲宽度值小于非正常采样时间，则在给定PWM周期中电流采样被选择性地从标称采样时间的非零采样延迟时间值延迟 为了促进适当的信号稳定以便精确的电流测量，并且如果在给定的PWM周期结束附近的中间总连续导通时间小于非零第二阈值，则中间的总连续导通时间是选择性的 通过向下一个PWM周期的中间脉冲宽度值添加非零调整偏移时间值来扩展。
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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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公开(公告)号：US10250161B1
公开(公告)日：2019-04-02
申请号：US15945836
申请日：2018-04-05
Applicant: Rockwell Automation Technologies, Inc.
Inventor： David Leggate , Russel J. Kerkman
IPC: H02M7/5387 , H02M5/458 , H02M1/38
Abstract: Power conversion systems, methods and control apparatus to operate a power converter, including a processor computes an angle of an AC output current signal, compute a first voltage error that represents an inverter switch dead time voltage error in a synchronous reference frame according to the angle, computes a compensated voltage command according to the first voltage error and according to a voltage control reference, and controls an inverter according to the compensated voltage command.
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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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Patent Agency Ranking
15.发明授权Double fed induction generator (DFIG) converter and method for improved grid fault ridethrough 有权双馈感应发电机（DFIG）转换器和改进电网故障穿通的方法公开(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。
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16.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：US08988060B2
公开(公告)日：2015-03-24
申请号：US14070229
申请日：2013-11-01
Applicant: Rockwell Automation Technologies, Inc.
Inventor： Russel J. Kerkman , Carlos D. Rodriguez-Valdez
Abstract: A system and method for controlling an electrical device is provided. The method comprises receiving three phase power from a source, decomposing signals representative of power in each phase of the three phase power to provide a positive-sequence component of each phase and tracking the positive-sequence component of each phase via a phase locked loop and a tracking filter.
Abstract translation: 提供了一种用于控制电气设备的系统和方法。 该方法包括从源接收三相功率，分解代表三相功率的每相中的功率的信号，以提供每相的正序分量，并通过锁相环追踪每相的正序分量; 跟踪过滤器
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公开(公告)号：US20140055182A1
公开(公告)日：2014-02-27
申请号：US14070229
申请日：2013-11-01
Applicant: ROCKWELL AUTOMATION TECHNOLOGIES, INC.
Inventor： Russel J. Kerkman , Carlos D. Rodriguez-Valdez
IPC: H02J3/26
Abstract: A system and method for controlling an electrical device is provided. The method comprises receiving three phase power from a source, decomposing signals representative of power in each phase of the three phase power to provide a positive-sequence component of each phase and tracking the positive-sequence component of each phase via a phase locked loop and a tracking filter.
Abstract translation: 提供了一种用于控制电气设备的系统和方法。 该方法包括从源接收三相功率，分解代表三相功率的每相中的功率的信号，以提供每相的正序分量，并通过锁相环追踪每相的正序分量; 跟踪过滤器
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