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。

公开(公告)号：US20120140532A1

公开(公告)日：2012-06-07

申请号：US12957672

申请日：2010-12-01

申请人： Rangarajan M. Tallam ,  David Leggate

发明人： Rangarajan M. Tallam ,  David Leggate

IPC分类号： H02M5/44

CPC分类号： H02M7/53875

摘要： Power conversion systems and methods are provided for operating a multi-phase inverter to drive a load while mitigating reflected waves, in which one or more PWM modulating signals are selectively adjusted if at least one of the phase signals or values is transitioning into or out of an over-modulation range outside a pulse width modulation carrier waveform range.

摘要翻译： 提供了功率转换系统和方法，用于操作多相逆变器来驱动负载，同时减轻反射波，其中如果相位信号或值中的至少一个正在转换或退出，则选择性地调整一个或多个PWM调制信号 脉宽调制载波波形范围外的过调制范围。

公开(公告)号：US08488345B2

公开(公告)日：2013-07-16

申请号：US12957672

申请日：2010-12-01

申请人： Rangarajan M. Tallam ,  David Leggate

发明人： Rangarajan M. Tallam ,  David Leggate

IPC分类号： H02M5/45

CPC分类号： H02M7/53875

摘要： Power conversion systems and methods are provided for operating a multi-phase inverter to drive a load while mitigating reflected waves, in which one or more PWM modulating signals are selectively adjusted if at least one of the phase signals or values is transitioning into or out of an over-modulation range outside a pulse width modulation carrier waveform range.

摘要翻译： 提供了功率转换系统和方法，用于操作多相逆变器来驱动负载，同时减轻反射波，其中如果相位信号或值中的至少一个正在转换或退出，则选择性地调整一个或多个PWM调制信号 脉宽调制载波波形范围外的过调制范围。

公开(公告)号：US20120075892A1

公开(公告)日：2012-03-29

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： H02M5/22 ,  H02M7/12 ,  H02M7/48

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。

公开(公告)号：US07881081B1

公开(公告)日：2011-02-01

申请号：US12761893

申请日：2010-04-16

申请人： Rangarajan M. Tallam ,  David Leggate ,  David W. Kirschnik ,  Richard A. Lukaszewski

发明人： Rangarajan M. Tallam ,  David Leggate ,  David W. Kirschnik ,  Richard A. Lukaszewski

IPC分类号： H02M1/12

CPC分类号： H02M1/44 ,  H02M7/5395 ,  H02M2001/123 ,  H02M2007/53876

摘要： Control systems, methods and power conversion systems are presented for controlling common mode currents in power converters, in which feedback signals used in pulse width modulated inverter switching control are selectively adjusted to ensure minimum differences between the resulting common mode compensated feedback signals according to a common mode dwell time in each pulse width modulation period, with the common mode dwell time being adjusted according to modulation index.

摘要翻译： 提出了用于控制功率转换器中的共模电流的控制系统，方法和功率转换系统，其中选择性地调节在脉冲宽度调制的逆变器切换控制中使用的反馈信号，以确保根据共同的所产生的共模补偿反馈信号之间的最小差异 模式驻留时间在每个脉冲宽度调制周期内，共模停留时间根据调制指数进行调整。

公开(公告)号：US07738267B1

公开(公告)日：2010-06-15

申请号：US12394613

申请日：2009-02-27

申请人： Rangarajan Tallam ,  Russel Kerkman ,  David Leggate

发明人： Rangarajan Tallam ,  Russel Kerkman ,  David Leggate

IPC分类号： H02J3/36

CPC分类号： H02M1/44 ,  H02M7/5387 ,  H02M2001/123 ,  H02M2007/53876

摘要： Control systems, methods and power conversion systems are presented for controlling 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，方法和电力转换系统，用于控制由逆变器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第一个矢量 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。

公开(公告)号：US06541933B1

公开(公告)日：2003-04-01

申请号：US09996950

申请日：2001-11-20

申请人： David Leggate ,  Russel J. Kerkman

发明人： David Leggate ,  Russel J. Kerkman

IPC分类号： G05B1128

CPC分类号： H02M7/5395 ,  H02P27/08

摘要： Method and apparatus for eliminating greater than twice motor overvoltage by altering modulating signals provided to a PWM controller which in turn provides firing pulses to a PWM inverter. The modulating waves are altered by either tying them to positive or negative DC buses or limiting the maximum magnitudes to a maximum magnitude value above which modulating waveforms are known to cause greater than twice overvoltage. Pass through modulating waveform angles at which waveforms have to be modified are determined as a function of modulating waveform symmetries and the first pass through angle within a waveform cycle.

摘要翻译： 通过改变提供给PWM控制器的调制信号来消除大于两倍的电动机过电压的方法和装置，其进而向PWM逆变器提供点火脉冲。 调制波通过将它们连接到正或负DC总线或将最大幅度限制到最大幅度值来改变，其中已知调制波形导致大于两倍的过电压。 通过波形必须被修改的调制波形角度被确定为在波形周期内调制波形对称性和第一通过角度的函数。

公开(公告)号：US06477067B1

公开(公告)日：2002-11-05

申请号：US09969382

申请日：2001-10-02

申请人： Russel J. Kerkman ,  David Leggate

发明人： Russel J. Kerkman ,  David Leggate

IPC分类号： H02M112

CPC分类号： H02M7/5395 ,  H02M2001/385

摘要： A method and apparatus for reducing distortion at the outputs of an inverter system, the apparatus including a polarity discriminator for determining the polarity of a current passing through an output terminal to a load, a compensator programmed with different upper and lower compensation values and controlled by the discriminator to provide the upper compensation value as an output when the current polarity is positive and providing the lower compensation value when the polarity is negative and a combiner for receiving a modulating signal and the compensation value provided by the compensator and mathematically combining the two signals to generate a modified modulating signal.

摘要翻译： 一种用于减少逆变器系统的输出端的失真的方法和装置，该装置包括用于确定通过输出端子到负载的电流的极性的极性鉴别器，用不同的上限和下限补偿值编程的补偿器，并由 鉴别器当电流极性为正时提供较高的补偿值作为输出，并且当极性为负极时提供较低的补偿值，以及用于接收调制信号的组合器和由补偿器提供的补偿值，并在数学上组合两个信号 以产生修改的调制信号。

公开(公告)号：US07626836B2

公开(公告)日：2009-12-01

申请号：US11259510

申请日：2005-10-26

申请人： David Leggate ,  Gary Leonard Skibinski ,  Gary R. Woltersdorf

发明人： David Leggate ,  Gary Leonard Skibinski ,  Gary R. Woltersdorf

IPC分类号： H02M1/12 ,  H02M1/14

CPC分类号： H02M7/53875 ,  H02M2007/53876

摘要： An apparatus and method for controlling an inverter, the apparatus including an adjustable frequency controller receiving a reference frequency value and generating a command frequency value as a function thereof, an adjustable voltage controller receiving a reference voltage value and generating a command voltage value as a function thereof and independent of the command frequency and a modulator receiving the command frequency value and the command voltage value and generating pulse width modulated (PWM) inverter control signals as a function thereof.

摘要翻译： 一种用于控制逆变器的装置和方法，该装置包括接收参考频率值并产生其作为其功能的命令频率值的可变频率控制器，接收参考电压值并产生指令电压值作为函数的可调电压控制器 并且独立于指令频率，以及接收指令频率值和指令电压值并产生脉冲宽度调制（PWM）逆变器控制信号作为其功能的调制器。

公开(公告)号：US20140254217A1

公开(公告)日：2014-09-11

申请号：US13787291

申请日：2013-03-06

申请人： Bing Li ,  David Leggate ,  Timothy Rowan

发明人： Bing Li ,  David Leggate ,  Timothy Rowan

IPC分类号： G01R21/06 ,  H02M5/458

CPC分类号： G01R21/06 ,  G01R19/2513 ,  G01R31/42 ,  H02H7/1216 ,  H02H7/1255 ,  H02M1/14 ,  H02M1/32 ,  H02M5/4585

摘要： Methods and apparatus are presented for detecting phase loss and/or excessive ripple in a power converter, in which bandpass filters are used to obtain harmonic voltage amplitudes associated with the power converter DC bus, and phase loss is detected if a ratio of the second harmonic to the sixth harmonic and/or a ratio of the fourth harmonic to the sixth harmonic exceed predetermined threshold values.

摘要翻译： 提出了用于检测功率转换器中的相位损耗和/或过大纹波的方法和装置，其中使用带通滤波器来获得与功率转换器DC总线相关联的谐波电压幅度，并且如果二次谐波的比率 到第六谐波和/或第四谐波与第六谐波的比率超过预定阈值。