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21. 发明授权

US06979968B2 Method and system for managing processor execution time utilizing variable frequency switching 有权
标题翻译：使用可变频率切换管理处理器执行时间的方法和系统
公开(公告)号：US06979968B2
公开(公告)日：2005-12-27
申请号：US10676529
申请日：2003-10-01
申请人： James M. Nagashima , Thomas P. O'Meara , Nitinkumar R. Patel , Steven E. Schulz
发明人： James M. Nagashima , Thomas P. O'Meara , Nitinkumar R. Patel , Steven E. Schulz
IPC分类号： H02P3/00 , H02P5/00 , H02P23/00
CPC分类号： H02P23/0004
摘要： The present invention includes a method for managing processor execution time in a motor controller. The method includes receiving motor speed data, comparing the received motor speed data to predetermined motor speed ranges, determining a motor speed range based on the comparison, and modulating an inverter switching frequency of the motor controller processor based on the motor speed range. The step of receiving motor speed data may include receiving machine terminal information, processing the received machine terminal information utilizing a sensorless control algorithm, and determining motor speed data based on the processed information. The step of modulating the inverter switching frequency may include determining a modified inverter switching frequency value based on the determined motor speed range and providing the modified inverter switching frequency value to a processor control algorithm. In one embodiment, the processor control algorithm modifies the inverter switching frequency based on the modified inverter switching frequency value.
摘要翻译：本发明包括一种用于在马达控制器中管理处理器执行时间的方法。该方法包括接收电动机速度数据，将接收到的电动机速度数据与预定的电动机速度范围进行比较，基于比较确定电动机速度范围，以及基于电动机速度范围来调制电动机控制器处理器的逆变器开关频率。接收电动机速度数据的步骤可以包括接收机器终端信息，利用无传感器控制算法处理所接收的机器终端信息，以及基于处理的信息确定电动机速度数据。调制逆变器开关频率的步骤可以包括基于所确定的电动机速度范围确定修正的逆变器开关频率值，并将修改的逆变器开关频率值提供给处理器控制算法。在一个实施例中，处理器控制算法基于经修改的逆变器开关频率值来修改逆变器开关频率。

22. 发明授权

US06763622B2 Amplitude detection method and apparatus for high frequency impedance tracking sensorless algorithm 有权
标题翻译：用于高频阻抗跟踪无传感器算法的幅度检测方法和装置
公开(公告)号：US06763622B2
公开(公告)日：2004-07-20
申请号：US10268507
申请日：2002-10-10
申请人： Steven E. Schulz , Nitinkumar R. Patel
发明人： Steven E. Schulz , Nitinkumar R. Patel
IPC分类号： H02P146
CPC分类号： B60L11/18 , B60L11/1803 , B60L15/025 , H02P6/181 , H02P6/183 , H02P6/185 , H02P21/0089 , H02P21/18 , H02P21/26 , H02P2203/05 , H02P2203/11 , H02P2207/05 , Y02T10/643 , Y02T10/7005 , Y02T10/7258
摘要： A control system for an electric motor including an inverter for providing power to the electric motor, a controller for controlling the inverter, a first motor speed control block in the controller injecting a high frequency signal into the electric motor to determine the speed and position of the electric motor, where the first motor speed control block includes a tuned moving average filter to determine the magnitude of high frequency current in the electric motor.
摘要翻译：一种用于电动机的控制系统，包括用于向电动机提供电力的逆变器，用于控制逆变器的控制器，控制器中的第一电动机速度控制块，将高频信号注入电动机以确定速度和位置电动机，其中第一电动机速度控制块包括调谐移动平均滤波器，以确定电动机中的高频电流的大小。

23. 发明授权

US08319460B2 Method and system for initiating operation of an electric motor 有权
标题翻译：电动机启动运行的方法和系统
公开(公告)号：US08319460B2
公开(公告)日：2012-11-27
申请号：US12606839
申请日：2009-10-27
申请人： Yo Chan Son , Jihoon Jang , Brian A. Welchko , Nitinkumar R. Patel , Steven E. Schulz
发明人： Yo Chan Son , Jihoon Jang , Brian A. Welchko , Nitinkumar R. Patel , Steven E. Schulz
IPC分类号： H02P6/04
CPC分类号： H02P6/20
摘要： Methods and systems for controlling an electric motor are provided. The motor includes a plurality of windings. Each winding is coupled to a respective set of first and second switches. The first switch of each set of switches is simultaneously activated. Current flow through the plurality of windings is measured while the first switch of each set of switches is activated. The electric motor is controlled according to a first motor control method if the measured current is below a predetermined threshold. The electric motor is controlled according to a second motor control method if the measured current is above the predetermined threshold.
摘要翻译：提供了用于控制电动机的方法和系统。马达包括多个绕组。每个绕组耦合到相应的一组第一和第二开关。每组开关的第一个开关同时被激活。当每组开关的第一开关被激活时，测量通过多个绕组的电流。如果测量电流低于预定阈值，则根据第一电动机控制方法来控制电动机。如果测量的电流高于预定阈值，则根据第二电动机控制方法来控制电动机。

24. 发明授权

US08253360B2 Vector controlled motor drive system implementing pulse width modulated (PWM) waveforms 有权
标题翻译：实现脉宽调制（PWM）波形的矢量控制电机驱动系统
公开(公告)号：US08253360B2
公开(公告)日：2012-08-28
申请号：US12503591
申请日：2009-07-15
申请人： Steven E. Schulz , Yo Chan Son , Nitinkumar R. Patel
发明人： Steven E. Schulz , Yo Chan Son , Nitinkumar R. Patel
IPC分类号： H02P21/00
CPC分类号： H02P6/182 , B60L15/025 , B60L15/08 , B60L2200/26 , B60L2260/44 , H02P21/04 , H02P21/18 , H02P21/24 , H02P27/08 , Y02T10/643
摘要： A vector controlled motor drive system is provided that includes a test vector and duty cycle generator module designed to receive a set of three-phase voltage command signals and designed to generate a set of pulse width modulated (PWM) waveforms. The set of PWM waveforms comprise: a first modified switching vector signal for a first motor phase that comprises at least two test pulses over three consecutive PWM cycles. The first modified switching vector signal has a first amplitude value that changes between a high amplitude value and a low amplitude value during the three consecutive PWM cycles. A number of transitions by the first modified switching vector signal between the low amplitude value and the high amplitude value over the three consecutive PWM cycles is greater than six and less than twelve.
摘要翻译：提供了一个矢量控制的电机驱动系统，其包括测试矢量和占空比发生器模块，该模块设计成接收一组三相电压指令信号，并被设计成产生一组脉冲宽度调制（PWM）波形。所述PWM波形组包括：用于第一电动机相位的第一修改的开关矢量信号，其包括在三个连续的PWM周期上的至少两个测试脉冲。第一修改开关矢量信号具有在三个连续PWM周期期间在高振幅值和低振幅值之间变化的第一振幅值。在三个连续PWM周期中，通过第一修改的开关矢量信号在低振幅值和高幅度值之间的转换大于6并小于12。

25. 发明申请

US20080197796A1 SYSTEM AND METHOD FOR CONTROLLING ELECTRIC DRIVE SYSTEMS 有权
标题翻译：用于控制电力驱动系统的系统和方法
公开(公告)号：US20080197796A1
公开(公告)日：2008-08-21
申请号：US11676539
申请日：2007-02-20
申请人： Bon-Ho Bae , Steven E. Schulz , Nitinkumar R. Patel
发明人： Bon-Ho Bae , Steven E. Schulz , Nitinkumar R. Patel
IPC分类号： H02P7/00
CPC分类号： B60L11/1861 , B60L15/025 , Y02T10/643 , Y02T10/7005 , Y02T10/7044 , Y02T10/705 , Y02T10/7258
摘要： Methods, apparatus, and systems are provided for regulating the operation of a drive system within a battery voltage and power range. The apparatus includes a PI regulator producing a signal for regulating a torque output of the drive system based on a DC voltage source limit and/or power limit, a converter normalizing the signal from the PI regulator to produce a new torque limit, and a switch selecting either the new torque limit or an available torque limit of the drive system. The PI regulator includes an integrator having an initial value based on the torque output of the drive system and a copper loss term.
摘要翻译：提供了用于调节电池电压和功率范围内的驱动系统的操作的方法，装置和系统。该装置包括PI调节器，其产生用于基于直流电压源极限和/或功率限制来调节驱动系统的转矩输出的信号，转换器对来自PI调节器的信号进行归一化以产生新的转矩极限，以及开关选择新的转矩限制或驱动系统的可用转矩极限。 PI调节器包括具有基于驱动系统的转矩输出的初始值和铜损失项的积分器。

26. 发明授权

US07088077B2 Position-sensorless control of interior permanent magnet machines 有权
标题翻译：内置永磁机的无位置传感器控制
公开(公告)号：US07088077B2
公开(公告)日：2006-08-08
申请号：US10984178
申请日：2004-11-09
申请人： James M. Nagashima , Khwaja M. Rahman , Nitinkumar R. Patel , Steven E. Schulz , Terence G. Ward , Stanley K. Fujii
发明人： James M. Nagashima , Khwaja M. Rahman , Nitinkumar R. Patel , Steven E. Schulz , Terence G. Ward , Stanley K. Fujii
IPC分类号： H02P9/00 , H02P7/00
CPC分类号： H02P21/04 , H02P21/0089 , H02P21/22 , H02P29/02
摘要： A method of controlling an IPM machine having a salient rotor. Stator terminal signals are measured and rotated to obtain synchronous reference frame current signals. A rotor position is estimated based on an impedance generated using the rotor and included in the current signals. The estimated rotor position is used to control the machine. An alternator-starter system in which this method is used can provide high cranking torque and generation power over a wide speed range while providing operational efficiency.
摘要翻译：一种控制具有显着转子的IPM机的方法。定子端子信号被测量和旋转以获得同步参考帧电流信号。基于使用转子产生的并且包括在电流信号中的阻抗来估计转子位置。估计的转子位置用于控制机器。使用该方法的交流发电机 - 起动器系统可以在宽的速度范围内提供高起动转矩和发电功率，同时提供操作效率。

27. 发明授权

US07023168B1 Field weakening motor control system and method 失效
标题翻译：弱磁电机控制系统及方法
公开(公告)号：US07023168B1
公开(公告)日：2006-04-04
申请号：US10939553
申请日：2004-09-13
申请人： Nitinkumar R. Patel , Steven E. Schulz , Seung Ki Sul , Bon-Ho Bae
发明人： Nitinkumar R. Patel , Steven E. Schulz , Seung Ki Sul , Bon-Ho Bae
IPC分类号： H02P3/18 , H02P5/04 , H02P5/28
CPC分类号： H02P21/10 , H02P21/0089
摘要： A control system for an electric machine includes a flux weakening module, which includes a voltage magnitude calculator that receives d-axis and q-axis command voltages and that generates a voltage magnitude. An error circuit compares the voltage magnitude to a reference voltage and generates an error signal. A controller receives the error signal and generates a feedback flux correction signal. A limiter limits the feedback flux correction signal to a predetermined flux value and generates a limited feedback flux correction signal. A feedforward stator flux generating circuit generates a feedforward stator flux signal. A summing circuit sums the feedforward stator flux signal and the limited feedback flux correction signal to generate a final stator flux command.
摘要翻译：一种用于电机的控制系统包括磁通削弱模块，其包括接收d轴和q轴指令电压并产生电压幅度的电压幅度计算器。误差电路将电压幅度与参考电压进行比较，并产生误差信号。控制器接收误差信号并产生反馈磁通校正信号。限制器将反馈磁通校正信号限制在预定磁通值，并产生有限的反馈磁通校正信号。前馈定子通量产生电路产生前馈定子磁通信号。求和电路将前馈定子磁通信号和有限反馈磁通校正信号相加，以产生最终的定子通量指令。

28. 发明授权

US07002318B1 Position sensor fault tolerant control for automotive propulsion system 有权
标题翻译：汽车推进系统的位置传感器容错控制
公开(公告)号：US07002318B1
公开(公告)日：2006-02-21
申请号：US10948630
申请日：2004-09-23
申请人： Steven E. Schulz , Sean E Gleason , Nitinkumar R. Patel , James M. Nagashima , Yu-Seok Jeong , Seung Ki Sul , Michael Milani
发明人： Steven E. Schulz , Sean E Gleason , Nitinkumar R. Patel , James M. Nagashima , Yu-Seok Jeong , Seung Ki Sul , Michael Milani
IPC分类号： H02P7/50 , B80L3/00
CPC分类号： B60L3/0038 , H02P2203/05 , Y02T10/642
摘要： A control system for a motor including a rotor comprises a sensorless sensor module that includes a saliency-based estimator module that generates a first rotor position signal based on saliency and a back electromotive force (emf) estimator module that generates a second rotor position signal based on back emf. A selector selects the first rotor position signal for rotor speeds below a first rotor speed and the second rotor position signal for rotor speeds above the first rotor speed. A rotor position sensor senses a position of the rotor and generates a third rotor position signal. A fault detection module senses faults in the rotor position sensor and outputs the third rotor position signal when a fault is not detected and one of the first and second rotor position signals when the fault is detected. An indirect field oriented control (IFOC) system controls the motor based on a selected one of the first, second and third rotor position signals.
摘要翻译：一种用于包括转子的电动机的控制系统包括无传感器传感器模块，其包括基于显着性产生第一转子位置信号的基于显着的估计器模块和产生基于第二转子位置信号的反电动势（emf）估计器模块在后面emf 选择器选择转子速度低于第一转子速度的第一转子位置信号和用于转子速度高于第一转子速度的第二转子位置信号。转子位置传感器感测转子的位置并产生第三转子位置信号。当检测到故障时，故障检测模块检测转子位置传感器中的故障并输出第三转子位置信号，当检测到故障时，第一和第二转子位置信号中的一个。间接磁场定向控制（IFOC）系统基于第一，第二和第三转子位置信号中选定的一个来控制电动机。

29. 发明授权

US06894454B2 Position sensorless control algorithm for AC machine 有权
标题翻译：交流电机无位置传感器控制算法
公开(公告)号：US06894454B2
公开(公告)日：2005-05-17
申请号：US10268503
申请日：2002-10-10
申请人： Nitinkumar R. Patel , Steven E. Schulz , James M. Nagashima , Seung Ki Sul , Yo-Chan Son , Bon-Ho Bae
发明人： Nitinkumar R. Patel , Steven E. Schulz , James M. Nagashima , Seung Ki Sul , Yo-Chan Son , Bon-Ho Bae
IPC分类号： H02P21/00 , H02P1/46 , H02P6/18 , H02P27/04
CPC分类号： H02P21/00 , H02P21/26 , H02P21/32
摘要： A control system for an electric motor including an inverter for providing power to the electric motor, a controller for controlling the inverter, a first motor speed control block in the controller injecting a high frequency signal into the electric motor to determine the speed and position of the electric motor, a second motor speed control block in the controller detecting the back electromotive force to determine the speed and position of the electric motor, and a transition control block in said controller to vary operation between the first motor speed control block and the second motor speed control block.
摘要翻译：一种用于电动机的控制系统，包括用于向电动机提供电力的逆变器，用于控制逆变器的控制器，控制器中的第一电动机速度控制块，将高频信号注入电动机以确定速度和位置所述电动机，所述控制器中的第二电动机速度控制块检测所述反电动势以确定所述电动机的速度和位置;以及所述控制器中的转换控制块，以改变所述第一电动机速度控制块和所述第二电动机速度控制块之间的操作电机速度控制块。

30. 发明授权

US07015667B2 Current regulation for a field weakening motor control system and method 有权
标题翻译：减弱电机控制系统和方法的电流调节
公开(公告)号：US07015667B2
公开(公告)日：2006-03-21
申请号：US10808082
申请日：2004-03-24
申请人： Nitinkumar R. Patel , Steven E. Schulz
发明人： Nitinkumar R. Patel , Steven E. Schulz
IPC分类号： H02P7/00
CPC分类号： H02P21/08
摘要： A control system and method for an electric machine includes a first calculation module that receives a modified torque command and a calculated stator flux command and that generates first and second current commands and first and second voltage commands. A voltage magnitude calculation module generates a voltage magnitude based the first and second voltage commands. A reference voltage calculator module generates a reference voltage based on a DC link voltage, an angular stator velocity and the first and second current commands. A flux weakening module generates the calculated flux command based on the angular stator velocity, the reference voltage and the voltage magnitude.
摘要翻译：一种用于电机的控制系统和方法包括：第一计算模块，其接收修改的转矩指令和计算的定子磁通指令，并产生第一和第二电流指令以及第一和第二电压指令。电压幅度计算模块基于第一和第二电压命令产生电压幅度。参考电压计算器模块基于DC链路电压，角定子速度和第一和第二电流命令产生参考电压。磁通弱化模块基于角定子速度，参考电压和电压幅度产生计算的磁通指令。

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