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41. 发明申请

US20080224651A1 METHOD AND SYSTEM FOR CONTROLLING PERMANENT MAGNET AC MACHINES 有权
标题翻译：用于控制永磁交流电机的方法和系统
公开(公告)号：US20080224651A1
公开(公告)日：2008-09-18
申请号：US11685722
申请日：2007-03-13
申请人： Steven E. Schulz , Silva Hiti , Khwaja M. Rahman
发明人： Steven E. Schulz , Silva Hiti , Khwaja M. Rahman
IPC分类号： H02P27/00
CPC分类号： H02P21/02 , H02P21/0089 , H02P21/05
摘要： Methods and systems are provided for controlling permanent magnet machines under varying loads. The method comprises generating a d-axis voltage command and a q-axis voltage command, producing a modified d-axis current command based on the q-axis voltage command and a d-axis current command, converting the modified d-axis current command to a modified d-axis voltage command, and transmitting the modified d-axis voltage command and the q-axis voltage command to the PM machine. The d-axis voltage command is based on a d-axis current command.
摘要翻译：提供了用于在变化的负载下控制永磁体机器的方法和系统。该方法包括生成d轴电压指令和q轴电压指令，基于q轴电压指令和d轴电流指令产生修正的d轴电流指令，将修正的d轴电流指令到修改的d轴电压指令，并将修改的d轴电压命令和q轴电压命令发送到PM机。 d轴电压指令基于d轴电流指令。

42. 发明授权

US07391181B2 Loss minimized PWM for voltage source inverters taking into account inverter non-linearity 有权
标题翻译：考虑到变频器非线性，电压源逆变器的损耗最小化为PWM
公开(公告)号：US07391181B2
公开(公告)日：2008-06-24
申请号：US11376910
申请日：2006-03-16
申请人： Brian Welchko , Steven E. Schulz , Silva Hiti
发明人： Brian Welchko , Steven E. Schulz , Silva Hiti
IPC分类号： H02P23/00
CPC分类号： H02P27/04 , H02M2001/0048 , Y02B70/1491
摘要： A dynamic pulse width modulation (PWM) selection device automatically switches between discontinuous PWM (DPWM) control methods. The PWM selection device comprises a PWM control module. The PWM control module determines a desired pulse width of a switching control signal according to a desired output signal. The PWM control module controls an actual pulse width of the switching control signal according to the desired pulse width and a first PWM control method. A selection module determines whether the desired pulse width exceeds a pulse width threshold. The selection module selects a second PWM control method when the desired pulse width exceeds the pulse width threshold.
摘要翻译：动态脉宽调制（PWM）选择装置自动切换不连续PWM（DPWM）控制方式。 PWM选择装置包括PWM控制模块。 PWM控制模块根据期望的输出信号确定切换控制信号的期望脉冲宽度。 PWM控制模块根据期望的脉冲宽度和第一PWM控制方法控制开关控制信号的实际脉冲宽度。选择模块确定期望的脉冲宽度是否超过脉冲宽度阈值。当所需脉冲宽度超过脉冲宽度阈值时，选择模块选择第二个PWM控制方法。

43. 发明申请

US20110089883A1 MOTOR PHASE WINDING FAULT DETECTION METHOD AND APPARATUS 审中-公开
标题翻译：电机相绕组故障检测方法及装置
公开(公告)号：US20110089883A1
公开(公告)日：2011-04-21
申请号：US12582733
申请日：2009-10-21
申请人： Mohammad N. Anwar , S.M. N. Hasan , Khwaja M. Rahman , Silva Hiti , Steven E. Schulz , Sean E. Gleason
发明人： Mohammad N. Anwar , S.M. N. Hasan , Khwaja M. Rahman , Silva Hiti , Steven E. Schulz , Sean E. Gleason
IPC分类号： G01R31/06
CPC分类号： G01R31/343 , G01R31/346
摘要： A method of detecting a phase winding fault in a multi-phase electric machine is executable via a motor controller, and includes measuring feedback signals of the machine, including each phase current, and generating reference phase voltages for each phase. The method includes calculating a predetermined voltage value using the feedback signals and reference phase voltages, and comparing the voltage value to a corresponding threshold to determine the fault. A control action is executed when the voltage value exceeds the corresponding threshold. The voltage value is one or more of: a ratio of a normalized zero sequence voltage to a modulation index, an RMS voltage for each phase, and total harmonic distortion of each phase current. An apparatus detects the fault, and includes a motor controller and an algorithm as set forth above. The apparatus may include a voltage inverter for generating a multi-phase alternating current output for powering the machine.
摘要翻译：检测多相电机中的相绕组故障的方法可通过马达控制器执行，并且包括测量机器的反馈信号，包括每个相电流，并产生每相的参考相电压。该方法包括使用反馈信号和参考相电压来计算预定电压值，并将电压值与相应的阈值进行比较以确定故障。当电压值超过相应的阈值时，执行控制动作。电压值是以下中的一个或多个：归一化零序电压与调制指数的比率，每相的RMS电压以及每个相电流的总谐波失真。一种装置检测故障，并包括如上所述的马达控制器和算法。该装置可以包括电压逆变器，用于产生用于为机器供电的多相交流输出。

44. 发明授权

US07449859B2 Reduction of subharmonic oscillation at high frequency operation of a power inverter 有权
标题翻译：降低变频器高频运行时的次谐波振荡
公开(公告)号：US07449859B2
公开(公告)日：2008-11-11
申请号：US11676527
申请日：2007-02-20
申请人： Bonho Bae , Nitinkumar R. Patel , Steven E. Schulz , Silva Hiti
发明人： Bonho Bae , Nitinkumar R. Patel , Steven E. Schulz , Silva Hiti
IPC分类号： H02P23/00
CPC分类号： B60L15/025 , B60L11/1803 , B60L15/20 , B60L2210/20 , B60L2220/14 , H02P21/04 , Y02T10/643 , Y02T10/7005 , Y02T10/725 , Y02T10/7275
摘要： A control architecture for an electrical inverter includes a synchronous frame current regulator and a stationary frame current regulator. The stationary frame current regulator receives input currents that represent filtered versions of stationary frame currents that correspond to the inverter output currents. The control architecture employs an adaptive filter module that filters the stationary frame currents to remove the fundamental motor frequency component (and its related harmonics), thus extracting any low frequency harmonic components. The stationary frame current regulator processes the low frequency components, while the synchronous frame current regulator processes the fundamental frequency component, resulting in suppression of low frequency oscillations in the inverter output.
摘要翻译：用于电力逆变器的控制架构包括同步电流调节器和静止电流调节器。静态框架电流调节器接收表示对应于逆变器输出电流的静态框电流的滤波版本的输入电流。控制架构采用自适应滤波器模块，对固定电流进行滤波，去除基波电机频率分量（及其相关谐波），从而提取任何低频谐波分量。静态电流调节器处理低频分量，而同步电流调节器处理基频分量，从而抑制逆变器输出中的低频振荡。

45. 发明授权

US07432683B2 PWM pattern sequence to reduce losses in voltage source inverters 有权
标题翻译： PWM模式序列，以减少电压源逆变器的损耗
公开(公告)号：US07432683B2
公开(公告)日：2008-10-07
申请号：US11561513
申请日：2006-11-20
申请人： Brian Welchko , Steven E. Schulz , Silva Hiti , Stephen T. West
发明人： Brian Welchko , Steven E. Schulz , Silva Hiti , Stephen T. West
IPC分类号： H02P5/34
CPC分类号： H02P27/06 , H02M7/53875 , H02M2007/53876 , H02P21/00
摘要： A method for controlling an inverter uses sequences of predetermined states where each state uniquely corresponding to a set of control signals provided to the inverter that is coupled to a motor. The method includes repeatedly applying a first center null timing sequence of the states while monitoring a zero crossing condition and then changing the repeated application of the first center null timing sequence of the states into a repeated application of a second center null timing sequence of states when the monitoring detects a zero crossing condition. The repeated application of the first center null timing sequence sequentially provides the inverter with a first predetermined sequence of sets of control signals. The monitoring of a zero crossing condition monitors for a zero crossing condition in an electrical current flowing between the inverter and a terminal of the motor. The second center null timing sequence defines a second predetermined sequence of sets of control signals.
摘要翻译：用于控制逆变器的方法使用预定状态的序列，其中每个状态唯一对应于提供给耦合到电动机的逆变器的一组控制信号。该方法包括在监视过零状态的同时重复地应用状态的第一中心零点定时序列，然后将状态的第一中心零点定时序列的重复应用改变为重复应用第二中心零点定时时序序列，监控检测到过零状态。重复应用第一中心零点定时序列顺序地向逆变器提供第一预定的一组控制信号。过零状态的监视监视在逆变器和电动机的端子之间流动的电流中的过零状态。第二中心零点定时序列定义了控制信号组的第二预定序列。

46. 发明申请

US20080224649A1 ANTI-WINDUP CONTROL FOR A CURRENT REGULATOR OF A PULSE WIDTH MODULATION INVERTER 有权
标题翻译：脉冲宽度调制逆变器的电流调节器的反向控制
公开(公告)号：US20080224649A1
公开(公告)日：2008-09-18
申请号：US11685729
申请日：2007-03-13
申请人： Bonho Bae , Steven E. Schulz , Silva Hiti , Nitinkumar R. Patel
发明人： Bonho Bae , Steven E. Schulz , Silva Hiti , Nitinkumar R. Patel
IPC分类号： H02P27/04
CPC分类号： H02P21/22
摘要： A control architecture for an electrical inverter includes a command limiter that is realized as a circular voltage limiter. The command limiter includes a Cartesian-to-polar converter coupled to a command source such as a synchronous frame current regulator. The Cartesian-to-polar converter provides magnitude and phase components for d-q command voltages. The command limiter further includes a magnitude limiter that limits the magnitude component to the maximum fundamental voltage component of the inverter, and a polar-to-Cartesian converter that converts the limited magnitude component and the phase component into modified d-q command voltages.
摘要翻译：用于逆变器的控制结构包括实现为圆形电压限制器的指令限制器。命令限制器包括耦合到诸如同步帧电流调节器的命令源的笛卡尔到极化转换器。笛卡尔到极化转换器为d-q指令电压提供幅度和相位分量。命令限制器还包括限幅器，其将幅度分量限制到逆变器的最大基波电压分量;以及极限到笛卡尔转换器，其将受限幅度分量和相位分量转换为修改的d-q指令电压。

47. 发明申请

US20110187304A1 MOTOR PHASE WINDING FAULT DETECTION METHOD AND APPARATUS 有权
标题翻译：电机相绕组故障检测方法及装置
公开(公告)号：US20110187304A1
公开(公告)日：2011-08-04
申请号：US12698221
申请日：2010-02-02
申请人： Mohammad N. Anwar , S.M. N. Hasan , Khwaja M. Rahman , Silva Hiti , Steven E. Schulz , Sean E. Gleason
发明人： Mohammad N. Anwar , S.M. N. Hasan , Khwaja M. Rahman , Silva Hiti , Steven E. Schulz , Sean E. Gleason
IPC分类号： G01R31/06
CPC分类号： G01R31/343
摘要： A method of detecting a phase winding fault in a multi-phase electric machine is executable via a motor controller, and includes measuring feedback signals of the machine, including each phase current, and generating reference phase voltages for each phase. The method includes calculating a predetermined voltage value using the feedback signals and reference phase voltages, and comparing the voltage value to a corresponding threshold to determine the fault. A control action is executed when the voltage value exceeds the corresponding threshold. The voltage value is one or more of: a ratio of a normalized negative sequence voltage to a modulation index, an RMS voltage for each phase, and total harmonic distortion of each phase current. An apparatus detects the fault, and includes a motor controller and an algorithm as set forth above. The apparatus may include a voltage inverter for generating a multi-phase alternating current output for powering the machine.
摘要翻译：检测多相电机中的相绕组故障的方法可通过马达控制器执行，并且包括测量机器的反馈信号，包括每个相电流，并产生每相的参考相电压。该方法包括使用反馈信号和参考相电压来计算预定电压值，并将电压值与相应的阈值进行比较以确定故障。当电压值超过相应的阈值时，执行控制动作。电压值是以下中的一个或多个：归一化负序电压与调制指数的比率，每相的RMS电压以及每个相电流的总谐波失真。一种装置检测故障，并包括如上所述的马达控制器和算法。该装置可以包括电压逆变器，用于产生用于为机器供电的多相交流输出。

48. 发明授权

US07518335B2 Method and apparatus for PWM control of voltage source inverter to minimize current sampling errors in electric drives 有权
标题翻译：用于电压源逆变器PWM控制的方法和装置，以最小化电力驱动器中的电流采样误差
公开(公告)号：US07518335B2
公开(公告)日：2009-04-14
申请号：US11462454
申请日：2006-08-04
申请人： Stephen T. West , Brian Welchko , Steven E. Schulz , Silva Hiti
发明人： Stephen T. West , Brian Welchko , Steven E. Schulz , Silva Hiti
IPC分类号： H02P27/08
CPC分类号： H02P27/08
摘要： A method for controlling an alternating current (AC) motor includes choosing a pulse sequence based on a ripple current in the AC motor at a sampling instant; and providing a voltage to the AC motor based on the pulse sequence.
摘要翻译：一种用于控制交流（AC）电动机的方法包括：在采样时刻根据交流电动机的纹波电流选择脉冲序列; 并且基于脉冲序列向AC电动机提供电压。

49. 发明申请

US20080197800A1 REDUCTION OF SUBHARMONIC OSCILLATION AT HIGH FREQUENCY OPERATION OF A POWER INVERTER 有权
标题翻译：降低功率变换器高频运行时的次谐波振荡
公开(公告)号：US20080197800A1
公开(公告)日：2008-08-21
申请号：US11676527
申请日：2007-02-20
申请人： Bonho Bae , Nitinkumar R. Patel , Steven E. Schulz , Silva Hiti
发明人： Bonho Bae , Nitinkumar R. Patel , Steven E. Schulz , Silva Hiti
IPC分类号： H02P27/04
CPC分类号： B60L15/025 , B60L11/1803 , B60L15/20 , B60L2210/20 , B60L2220/14 , H02P21/04 , Y02T10/643 , Y02T10/7005 , Y02T10/725 , Y02T10/7275
摘要： A control architecture for an electrical inverter includes a synchronous frame current regulator and a stationary frame current regulator. The stationary frame current regulator receives input currents that represent filtered versions of stationary frame currents that correspond to the inverter output currents. The control architecture employs an adaptive filter module that filters the stationary frame currents to remove the fundamental motor frequency component (and its related harmonics), thus extracting any low frequency harmonic components. The stationary frame current regulator processes the low frequency components, while the synchronous frame current regulator processes the fundamental frequency component, resulting in suppression of low frequency oscillations in the inverter output.
摘要翻译：用于电力逆变器的控制架构包括同步电流调节器和静止电流调节器。静态框架电流调节器接收表示对应于逆变器输出电流的静态框电流的滤波版本的输入电流。控制架构采用自适应滤波器模块，对固定电流进行滤波，去除基波电机频率分量（及其相关谐波），从而提取任何低频谐波分量。静态电流调节器处理低频分量，而同步电流调节器处理基频分量，从而抑制逆变器输出中的低频振荡。

50. 发明申请

US20080094023A1 METHOD AND APPARATUS FOR PWM CONTROL OF VOLTAGE SOURCE INVERTER TO MINIMIZE CURRENT SAMPLING ERRORS IN ELECTRIC DRIVES 有权
标题翻译：用于电压源逆变器的PWM控制以最小化电驱动电流采样误差的方法和装置
公开(公告)号：US20080094023A1
公开(公告)日：2008-04-24
申请号：US11462454
申请日：2006-08-04
申请人： Stephen T. West , Brian Welchko , Steven E. Schulz , Silva Hiti
发明人： Stephen T. West , Brian Welchko , Steven E. Schulz , Silva Hiti
IPC分类号： H02P27/08 , H02P27/00
CPC分类号： H02P27/08
摘要： A method for controlling an alternating current (AC) motor includes choosing a pulse sequence based on a ripple current in the AC motor at a sampling instant; and providing a voltage to the AC motor based on the pulse sequence.
摘要翻译：一种用于控制交流（AC）电动机的方法包括：在采样时刻根据交流电动机的纹波电流选择脉冲序列; 并且基于脉冲序列向AC电动机提供电压。

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