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11. 发明授权

US07106025B1 Cancellation of dead time effects for reducing common mode voltages 有权
标题翻译：取消死区时间效应以降低共模电压
公开(公告)号：US07106025B1
公开(公告)日：2006-09-12
申请号：US11068196
申请日：2005-02-28
申请人： Qiang Yin , Russel J. Kerkman , Richard A. Lukaszewski
发明人： Qiang Yin , Russel J. Kerkman , Richard A. Lukaszewski
IPC分类号： H02P5/28 , H02M1/12
CPC分类号： H02M7/53873 , H02M2001/385 , H02P27/08
摘要： Methods and apparatus for canceling dead time effects in the form of common mode voltages produced by a three-phase power conversion device in a rectifier/inverter variable frequency drive (VFD) system includes limiting the voltage difference between phase voltages at certain switching transition times to an amount δ, that is a function of the dead time that is specified for the switches and delaying gating signals to the switches to remove unexpected pulses produced by common mode voltages.
摘要翻译：在整流/变频变频驱动（VFD）系统中，通过三相电力变换装置产生的共模电压形式的取消死区时间效应的方法和装置包括将某些开关转换时间的相电压之间的电压差限制到数量三角形，这是为开关指定的死区时间的函数，并延迟门控信号给开关以消除由共模电压产生的意外脉冲。

12. 发明授权

US07400518B2 Modulation methods and apparatus for reducing common mode noise 有权
标题翻译：用于降低共模噪声的调制方法和装置
公开(公告)号：US07400518B2
公开(公告)日：2008-07-15
申请号：US11438569
申请日：2006-05-22
申请人： Qiang Yin , Russel J. Kerkman
发明人： Qiang Yin , Russel J. Kerkman
IPC分类号： H02M1/12 , H02M7/5387
CPC分类号： H02M7/5395 , H02M1/12 , H02M2001/123 , H02P27/08
摘要： A method and apparatus for reducing common mode noise in a three phase pulse width modulated (PWM) system the method comprising the steps of receiving modulating waveforms, identifying a first of the modulating waveforms that is instantaneously the maximum of the modulating waveforms, identifying a second of the modulating waveforms that is instantaneously the minimum of the modulating waveforms, for a first phase associated with at least one of the first and second identified waveforms, substituting a first substitute waveform for the one of the first and second waveforms, for the first phase, modifying at least one of the first substituted waveform and duty cycle signals generated by comparing the first substituted waveform with the carrier signal as a function of a first rule set to substantially minimize the effects of turn on delays and for at least one of the second and third phases, modifying at least one of the associated modulating waveform and duty cycle signals generated by comparing the modulating waveform with the carrier signal as a function of a second rule set to substantially eliminate the effects of turn on delays where the second rule set is different than the first rule set.
摘要翻译：一种用于降低三相脉宽调制（PWM）系统中的共模噪声的方法和装置，该方法包括以下步骤：接收调制波形，识别瞬时调制波形的最大值的第一调制波形，识别第二对于与第一和第二识别波形中的至少一个相关联的第一阶段，立即将最小调制波形的调制波形替换为第一和第二波形中的第一波形的第一替代波形，通过将所述第一替代波形与所述载波信号进行比较来生成的所述第一替代波形和占空比信号中的至少一个作为第一规则集的函数，以将接通延迟的影响基本上最小化，并且对于所述第二替代波形中的至少一个和第三阶段，修改由所生成的相关联的调制波形和占空比信号中的至少一个将所述调制波形与所述载波信号作为第二规则集的函数进行比较，以基本上消除所述第二规则集不同于所述第一规则集的导通延迟的影响。

13. 发明授权

US08503207B2 Discontinuous pulse width drive modulation method and apparatus for reduction of common-mode voltage in power conversion systems 有权
标题翻译：用于降低功率转换系统中共模电压的不连续脉宽驱动调制方法和装置
公开(公告)号：US08503207B2
公开(公告)日：2013-08-06
申请号：US12893838
申请日：2010-09-29
申请人： Rangarajan M. Tallam , Russel J. Kerkman , David Leggate
发明人： Rangarajan M. Tallam , Russel J. Kerkman , David Leggate
IPC分类号： H02M7/797
CPC分类号： H02M5/4585 , H02M1/12 , H02M2001/0025 , H02M2001/123 , H02M2001/385
摘要： Control systems, methods and power conversion systems are presented for reducing common mode voltages in AC motor loads driven by inverter PWM control using switching sequences with only active vectors where a first vector of each switching sequence differs by one phase switching state from a last vector of a switching sequence of an adjacent sector, along with enhanced deadtime compensation and reflected wave reduction techniques in providing pulse width modulated switching signals to a switching inverter.
摘要翻译：提出了控制系统，方法和功率转换系统，用于降低由逆变器PWM控制驱动的交流电动机负载中的共模电压，其中仅使用具有每个开关序列的第一向量与一个相位切换状态与最后一个矢量相邻扇区的切换序列，以及增强的死区时间补偿以及向切换逆变器提供脉宽调制切换信号的反射波减少技术。

14. 发明授权

US08471516B2 Adjustable speed drive lifetime improvement method 有权
标题翻译：可调速驱动寿命改善方法
公开(公告)号：US08471516B2
公开(公告)日：2013-06-25
申请号：US12786229
申请日：2010-05-24
申请人： Lixiang Wei , Richard A. Lukaszewski , Russel J. Kerkman
发明人： Lixiang Wei , Richard A. Lukaszewski , Russel J. Kerkman
IPC分类号： G05B11/28
CPC分类号： H02M7/537 , H02M7/53875 , H02P9/007 , H02P27/08 , H02P29/68
摘要： 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.
摘要翻译：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。

15. 发明申请

US20120212172A1 MODULAR LINE-TO-GROUND FAULT IDENTIFICATION 失效
标题翻译：模块化的线对地故障识别
公开(公告)号：US20120212172A1
公开(公告)日：2012-08-23
申请号：US13031454
申请日：2011-02-21
申请人： Carlos Rodriguez Valdez , Russel J. Kerkman , Rangarajan Tallam
发明人： Carlos Rodriguez Valdez , Russel J. Kerkman , Rangarajan Tallam
IPC分类号： H02P23/00 , H02J4/00
CPC分类号： G01R31/025 , G01R31/42
摘要： The present invention relates generally to systems and methods for detecting ground faults (i.e., line-to-ground faults) in electrical power conversion systems. In particular, the embodiments described herein include a common mode voltage booster module configured to calculate a common mode voltage boost factor and a common mode voltage boost function based on a plurality of voltage commands for the system. The common mode voltage boost factor and/or the common mode voltage boost function may be applied to the voltage commands to generate boosted voltage commands which, when applied to an inverter or converter, source current indicative of ground faults in the system. More specifically, the common mode voltage boost factor may be multiplied by a common mode voltage calculated by a common mode voltage calculator and summed with the voltage commands. In addition, the common mode voltage boost function may be summed with the voltage commands after the voltage commands have been summed with the common mode voltage boost factor.
摘要翻译：本发明一般涉及用于检测电力转换系统中的接地故障（即，线对地故障）的系统和方法。特别地，本文所述的实施例包括共模电压升压模块，其被配置为基于用于该系统的多个电压指令来计算共模升压因子和共模升压功能。共模升压因子和/或共模升压功能可以被施加到电压指令以产生升压电压命令，当被施加到逆变器或转换器时，指示系统中的接地故障的源电流。更具体地，共模电压升高因子可以乘以由共模电压计算器计算并与电压指令相加的共模电压。此外，共模电压升压功能可以在电压指令与共模升压因子相加之后与电压指令相加。

16. 发明申请

US20110199072A1 POWER CONTROL SYSTEM AND METHOD 有权
标题翻译：功率控制系统和方法
公开(公告)号：US20110199072A1
公开(公告)日：2011-08-18
申请号：US12706488
申请日：2010-02-16
申请人： Russel J. Kerkman , Carlos D. Rodriguez-Valdez
发明人： Russel J. Kerkman , Carlos D. Rodriguez-Valdez
IPC分类号： G01R25/00
CPC分类号： H02J3/26 , G01R25/00 , G01R29/18 , H02J3/44
摘要： 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.
摘要翻译：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

17. 发明授权

US4706012A Frequency compensated regulator 失效
标题翻译：频率补偿调节器
公开(公告)号：US4706012A
公开(公告)日：1987-11-10
申请号：US863015
申请日：1986-05-14
申请人： Russel J. Kerkman , Timothy M. Rowan
发明人： Russel J. Kerkman , Timothy M. Rowan
IPC分类号： H02M7/48 , H02P21/00 , H02P27/04 , H02P5/40 , G05F1/44
CPC分类号： H02M7/48
摘要： A regulator for a closed loop control system receives a sinusoidal reference input signal i* and sums it with a feedback signal i to produce an error signal. A control signal is produced by the regulator by combining signal components which include: (a) a component proportional to the error signal; (b) a componet proportional to the integral of the error signal; and (c) a component related to the frequency of the reference input signal. The latter component insures that an accurate control signal is produced by the regulator over a wide frequency range.
摘要翻译：用于闭环控制系统的调节器接收正弦参考输入信号i *并将其与反馈信号i相加以产生误差信号。控制信号由调节器通过组合信号分量产生，包括：（a）与误差信号成比例的分量; （b）与误差信号的积分成正比的分量; 和（c）与参考输入信号的频率相关的分量。后一部件确保了调节器在较宽的频率范围内产生精确的控制信号。

18. 发明授权

US4680695A Cross coupled current regulator 失效
标题翻译：交叉耦合电流调节器
公开(公告)号：US4680695A
公开(公告)日：1987-07-14
申请号：US922775
申请日：1986-10-27
申请人： Russel J. Kerkman , Timothy M. Rowan
发明人： Russel J. Kerkman , Timothy M. Rowan
IPC分类号： H02M7/48 , H02P21/00 , H02P27/04 , H02P13/30 , H02P5/40
CPC分类号： H02M7/48
摘要： A current regulator for a variable frequency power supply includes a proportional plus integral circuit that produces a composite control output signal for each phase. To improve the performance of the current regulator at higher frequencies, the composite control output signal for each phase also inlcudes a cross coupled component which is produced by multiplying a d.c. signal proportional to frequency times an integrator output signal from another phase. The composite control signals are applied to a voltage source inverter which produces the output currents to a load.
摘要翻译：用于可变频率电源的电流调节器包括比例积分电路，其产生用于每个相位的复合控制输出信号。为了提高电流调节器在较高频率下的性能，每相的复合控制输出信号还包括一个交叉耦合分量，该交叉耦合分量是通过将直流与频率成比例的信号乘以来自另一相的积分器输出信号。复合控制信号被施加到产生到负载的输出电流的电压源逆变器。

19. 发明授权

US08964427B2 Adaptive online filter for DC offset elimination 有权
标题翻译：自适应在线滤波器，用于直流偏移消除
公开(公告)号：US08964427B2
公开(公告)日：2015-02-24
申请号：US13537993
申请日：2012-06-29
申请人： Russel J. Kerkman , Ahmed Mohamed Sayed Ahmed , Brian J. Seibel
发明人： Russel J. Kerkman , Ahmed Mohamed Sayed Ahmed , Brian J. Seibel
IPC分类号： H02M1/12 , H02M1/14
CPC分类号： H03H11/04 , G01R25/00 , H02M1/4233 , H03F1/565 , H03H7/38 , Y02B70/126
摘要： 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.
摘要翻译：具有PLL的相位角检测器，功率转换器和用于减少输入信号中的偏移的方法，其中自适应偏移处理器从输入信号中选择性地去除DC偏移分量，以产生包括基频分量的修正信号，去除DC偏移分量的输入信号的高阶谐波，并且PLL根据修改的信号至少部分地提供相位角信号。

20. 发明授权

US08188694B2 Parallel power inverter motor drive system 有权
标题翻译：并联电力变频器电机驱动系统
公开(公告)号：US08188694B2
公开(公告)日：2012-05-29
申请号：US12837931
申请日：2010-07-16
申请人： Rangarajan M. Tallam , Russel J. Kerkman , Richard H. Radosevich , Alan J. Campbell
发明人： Rangarajan M. Tallam , Russel J. Kerkman , Richard H. Radosevich , Alan J. Campbell
IPC分类号： H02P27/00
CPC分类号： H02M5/4585
摘要： Multiple inverter motor drives are interconnected in parallel to provide a common output to a motor. Common control circuitry is coupled to all parallel drives via optical cables and provides signals to power layer circuitry of each inverter for generation, at the power layer, of timing for gate drive signals for the respective inverter power electronic switches. The resulting timing exhibits a high degree of synchronicity such that very little imbalance occurs in the outputs of the paralleled drives, resulting in very low circulating currents.
摘要翻译：多个变频器电机驱动器并联互连，为电机提供公共输出。公共控制电路通过光缆耦合到所有并行驱动器，并且向每个逆变器的功率层电路提供信号，以在功率层产生用于各个逆变器功率电子开关的栅极驱动信号的定时。所得到的定时表现出高度的同步性，使得在并联驱动器的输出中发生非常小的不平衡，导致非常低的循环电流。

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