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51. 发明授权

US08362732B2 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：US08362732B2
公开(公告)日：2013-01-29
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： G01R31/02
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。

52. 发明授权

US08358095B2 Method and system for testing electric motors 有权
标题翻译：电动机测试方法及系统
公开(公告)号：US08358095B2
公开(公告)日：2013-01-22
申请号：US12533762
申请日：2009-07-31
申请人： Peter J. Savagian , Steven E. Schulz , Silva Hiti
发明人： Peter J. Savagian , Steven E. Schulz , Silva Hiti
IPC分类号： G01R31/02 , H02H3/04 , H02K11/00
CPC分类号： G01R31/343
摘要： Method and systems for testing an electric motor are provided. A switching circuit coupled to the motor is operated in a first mode causing current to flow through the motor such that the motor is actuated with near zero torque. A magnitude of the current is repeatedly adjusted between first and second values. The current flow through the motor is monitored.
摘要翻译：提供了用于测试电动机的方法和系统。耦合到电动机的开关电路以第一模式操作，使得电流流过电动机，使得电动机以接近零的转矩被致动。在第一和第二值之间重复地调整电流的大小。监测通过电机的电流。

53. 发明申请

US20120112674A1 CONTROL OF A TRACTION POWER INVERTER MODULE IN A VEHICLE HAVING AN ELECTRIC TRACTION MOTOR 有权
标题翻译：具有电动牵引电机的车辆中的跟踪功率变换器模块的控制
公开(公告)号：US20120112674A1
公开(公告)日：2012-05-10
申请号：US13086532
申请日：2011-04-14
申请人： Steven E. Schulz , Mohammad N. Anwar , Michael J. Grimmer , Silva Hiti
发明人： Steven E. Schulz , Mohammad N. Anwar , Michael J. Grimmer , Silva Hiti
IPC分类号： H02P6/08
CPC分类号： H02P27/08 , B60L11/1803 , Y02T10/642 , Y02T10/7005
摘要： A method for controlling a traction power inverter module (TPIM) in a vehicle includes determining a commanded output torque of the motor using a controller. The method further includes controlling the TPIM and motor using a discontinuous pulse width modulated (DPWM) signal when the commanded output torque is less than a calibrated torque threshold. A continuous pulse width modulated (CPWM) signal is used when the commanded output torque is greater than the threshold. The method may include determining a direction of a change in the commanded output torque, and controlling the TPIM, via the controller, using the DPWM signal only when the commanded output torque drops below a predetermined hysteresis level. A vehicle includes a traction motor producing a motor torque for propelling the vehicle, an ESS, a TPIM, and a controller configured as noted above.
摘要翻译：用于控制车辆中的牵引力逆变器模块（TPIM）的方法包括使用控制器确定电动机的命令输出转矩。该方法还包括当指令的输出转矩小于校准转矩阈值时，使用不连续的脉宽调制（DPWM）信号来控制TPIM和电动机。当指令输出转矩大于阈值时，使用连续脉宽调制（CPWM）信号。该方法可以包括：仅当指令的输出转矩低于预定的滞后电平时，才通过控制器使用DPWM信号来确定所命令的输出转矩的变化方向，并控制TPIM。车辆包括产生用于推进车辆的电动机扭矩的牵引电动机，ESS，TPIM和如上所述配置的控制器。

54. 发明授权

US07768220B2 Harmonic torque ripple reduction at low motor speeds 有权
标题翻译：低电机转速下的谐波转矩脉动降低
公开(公告)号：US07768220B2
公开(公告)日：2010-08-03
申请号：US12108868
申请日：2008-04-24
申请人： Steven E. Schulz , Goro Tamai , Silva Hiti
发明人： Steven E. Schulz , Goro Tamai , Silva Hiti
IPC分类号： H02P6/10
CPC分类号： H02P29/50
摘要： Methods and systems are provided for reducing torque ripple in an electric motor. A method comprises receiving a torque command and determining a cancellation current command based on the torque command. The method further comprises generating a harmonic cancellation command based on the cancellation current command, wherein the harmonic cancellation command compensates for a phase shift and an attenuation introduced by a current regulated control module coupled to an inverter coupled to the electric motor. The method further comprises providing the harmonic cancellation command to the current regulated control module, wherein the current regulated control module is configured to control the inverter in response to the harmonic cancellation command and the torque command.
摘要翻译：提供了减少电动机转矩波动的方法和系统。一种方法包括：接收转矩指令并根据转矩指令确定取消电流指令。该方法还包括基于消除电流指令产生谐波消除命令，其中谐波消除指令补偿由耦合到与电动机耦合的逆变器的电流调节控制模块引入的相移和衰减。该方法还包括向当前调节控制模块提供谐波消除命令，其中当前调节控制模块被配置为响应于谐波消除指令和转矩指令来控制逆变器。

55. 发明授权

US07642737B2 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电流调节器的防饱和控制
公开(公告)号：US07642737B2
公开(公告)日：2010-01-05
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： H02P21/00
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。

56. 发明授权

US07622877B2 Method and system for controlling permanent magnet AC machines 有权
标题翻译：永磁交流电机控制方法及系统
公开(公告)号：US07622877B2
公开(公告)日：2009-11-24
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： H02P7/00
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。

57. 发明申请

US20090267555A1 HARMONIC TORQUE RIPPLE REDUCTION AT LOW MOTOR SPEEDS 有权
标题翻译：低电机速度下的谐波扭矩纹波减少
公开(公告)号：US20090267555A1
公开(公告)日：2009-10-29
申请号：US12108868
申请日：2008-04-24
申请人： Steven E. Schulz , Goro Tamai , Silva Hiti
发明人： Steven E. Schulz , Goro Tamai , Silva Hiti
IPC分类号： H02P6/10
CPC分类号： H02P29/50
摘要： Methods and systems are provided for reducing torque ripple in an electric motor. A method comprises receiving a torque command and determining a cancellation current command based on the torque command. The method further comprises generating a harmonic cancellation command based on the cancellation current command, wherein the harmonic cancellation command compensates for a phase shift and an attenuation introduced by a current regulated control module coupled to an inverter coupled to the electric motor. The method further comprises providing the harmonic cancellation command to the current regulated control module, wherein the current regulated control module is configured to control the inverter in response to the harmonic cancellation command and the torque command.
摘要翻译：提供了减少电动机转矩波动的方法和系统。一种方法包括：接收转矩指令并根据转矩指令确定取消电流指令。该方法还包括基于消除电流指令产生谐波消除命令，其中谐波消除指令补偿由耦合到与电动机耦合的逆变器的电流调节控制模块引入的相移和衰减。该方法还包括向当前调节控制模块提供谐波消除命令，其中当前调节控制模块被配置为响应于谐波消除命令和扭矩命令来控制逆变器。

58. 发明授权

US07042186B2 Decoupling a harmonic signal from a signal path 失效
标题翻译：从信号路径去耦合一个谐波信号
公开(公告)号：US07042186B2
公开(公告)日：2006-05-09
申请号：US10720626
申请日：2003-11-24
申请人： Constantin C. Stancu , Silva Hiti , Steven E. Schulz , Nitinkumar R. Patel
发明人： Constantin C. Stancu , Silva Hiti , Steven E. Schulz , Nitinkumar R. Patel
IPC分类号： G05B11/36
CPC分类号： H02P6/185 , H02P6/183 , H02P21/18 , H02P2203/11 , H02P2207/01
摘要： A method for decoupling a harmonic signal from an input signal wherein the harmonic signal is harmonic relative to a signal other than the input signal. An angular position of the other signal is multiplied by a value representing the harmonic to obtain an angular position multiple. A harmonic decoupling block uses the angular position multiple to obtain correction signals representing the harmonic signal, and subtracts the correction signals from the input current to decouple the harmonic signal from the input signal. This method is useful for decoupling unwanted harmonics from currents into which high-frequency signals have been injected for control of electric motors.
摘要翻译：一种用于将谐波信号与输入信号去耦的方法，其中谐波信号是相对于输入信号以外的信号的谐波。将另一信号的角位置乘以表示谐波的值，以获得角位置倍数。谐波去耦块使用角位置倍数来获得表示谐波信号的校正信号，并从输入电流中减去校正信号，以将谐波信号与输入信号去耦。该方法对于将不想要的谐波与已注入高频信号的电流去耦以控制电动机是有用的。

59. 发明申请

US20080272732A1 METHOD AND SYSTEM FOR MOTOR CONTROL WITH DELAY COMPENSATION 有权
标题翻译：具有延迟补偿的电机控制方法与系统
公开(公告)号：US20080272732A1
公开(公告)日：2008-11-06
申请号：US11743718
申请日：2007-05-03
申请人： Steven E. Schulz , Nitinkumar R. Patel , Bonho Bae , Stephen T. West
发明人： Steven E. Schulz , Nitinkumar R. Patel , Bonho Bae , Stephen T. West
IPC分类号： H02P27/04
CPC分类号： H02P23/0004
摘要： Methods and systems are provided for controlling an electric machine via an inverter while compensating for one or more hardware delays. The method includes receiving a control signal, producing a first sampling signal based on the control signal, and adjusting the sampling signal to compensate for a first delay of the one or more hardware delays. The inverter is operable to produce a voltage signal based on the control signal, and the electric machine is operable to produce a current based on the voltage signal. A sampling of the current is performed based on the first sampling signal.
摘要翻译：提供了用于通过反相器控制电机的方法和系统，同时补偿一个或多个硬件延迟。该方法包括接收控制信号，基于控制信号产生第一采样信号，以及调整采样信号以补偿一个或多个硬件延迟的第一延迟。逆变器可操作以基于控制信号产生电压信号，并且电机可操作以基于电压信号产生电流。基于第一采样信号执行电流的采样。

60. 发明授权

US07679309B2 Method and system for motor control with delay compensation 有权
标题翻译：延时补偿电机控制方法及系统
公开(公告)号：US07679309B2
公开(公告)日：2010-03-16
申请号：US11743718
申请日：2007-05-03
申请人： Steven E. Schulz , Nitinkumar R. Patel , Bonho Bae , Stephen T. West
发明人： Steven E. Schulz , Nitinkumar R. Patel , Bonho Bae , Stephen T. West
IPC分类号： H02P23/00
CPC分类号： H02P23/0004
摘要： Methods and systems are provided for controlling an electric machine via an inverter while compensating for one or more hardware delays. The method includes receiving a control signal, producing a first sampling signal based on the control signal, and adjusting the sampling signal to compensate for a first delay of the one or more hardware delays. The inverter is operable to produce a voltage signal based on the control signal, and the electric machine is operable to produce a current based on the voltage signal. A sampling of the current is performed based on the first sampling signal.
摘要翻译：提供了用于通过反相器控制电机的方法和系统，同时补偿一个或多个硬件延迟。该方法包括接收控制信号，基于控制信号产生第一采样信号，以及调整采样信号以补偿一个或多个硬件延迟的第一延迟。逆变器可操作以基于控制信号产生电压信号，并且电机可操作以基于电压信号产生电流。基于第一采样信号执行电流的采样。

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