公开(公告)号：US08421391B2

公开(公告)日：2013-04-16

申请号：US12778733

申请日：2010-05-12

申请人： Chia-Chou Yeh ,  Steven E. Schulz

发明人： Chia-Chou Yeh ,  Steven E. Schulz

IPC分类号： H02P7/00

CPC分类号： G01K7/42 ,  G01K13/08 ,  H02K11/20 ,  H02P29/64

摘要： An electric motor system includes an electric motor comprising a stator with windings and a rotor configured to operate at a motor speed; a cooling system comprising coolant configured to cool the rotor and the stator, the coolant having a coolant flow rate and a coolant temperature; an inverter module coupled to the electric motor and configured to provide current to the windings based on inverter control signals; a current regulated torque controller coupled to the inverter module and configured to generate the inverter control signals in response to a derated torque command; and a temperature estimation controller coupled to the current regulated torque controller and configured to generate the derated torque command based on an initial torque command and an estimated stator winding temperature. The temperature estimation controller is configured to estimate the estimated stator winding temperature based on the motor speed and the coolant flow rate.

摘要翻译： 电动机系统包括电动机，其包括具有绕组的定子和被配置为以电动机速度操作的转子; 冷却系统，其包括被配置为冷却所述转子和所述定子的冷却剂，所述冷却剂具有冷却剂流速和冷却剂温度; 逆变器模块，其耦合到所述电动机并且被配置为基于逆变器控制信号向所述绕组提供电流; 耦合到所述逆变器模块并被配置为响应于降额转矩命令而产生所述逆变器控制信号的电流调节转矩控制器; 以及温度估计控制器，其耦合到所述电流调节转矩控制器，并且被配置为基于初始转矩指令和所估计的定子绕组温度来产生所述降额转矩指令。 温度估计控制器被配置为基于电动机速度和冷却剂流量来估计定子绕组温度。

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。

公开(公告)号：US08288886B2

公开(公告)日：2012-10-16

申请号：US12614464

申请日：2009-11-09

申请人： Mohammad N. Anwar ,  Steven E. Schulz ,  Stephan N. Green ,  James E. Tarchinski

发明人： Mohammad N. Anwar ,  Steven E. Schulz ,  Stephan N. Green ,  James E. Tarchinski

IPC分类号： B60L1/00 ,  B60L3/00 ,  H02G3/00

CPC分类号： H02M1/44 ,  B60K6/48 ,  B60L11/14 ,  B60L15/20 ,  B60L2270/145 ,  Y02T10/6221 ,  Y02T10/645 ,  Y02T10/70 ,  Y02T10/7077 ,  Y02T10/7275

摘要： A method for avoiding electrical resonance in a vehicle having a high-voltage (HV) direct current (DC) bus shared by a first and a second power electronic converter device, such as an air conditioning compressor module (ACCM) and a traction power inverter (TPIM), includes determining an impedance characteristic of the bus, defining resonance points for the bus, selecting lower and upper switching frequency boundaries for the TPIM, and preventing the TPIM from operating within a range defined by these boundaries. A vehicle includes the first and second power electronic converter device, e.g., the APPM and the TPIM, the shared HV DC, and a controller having the algorithm set forth above, wherein the controller is adapted for avoiding electrical resonance in the HV DC bus by executing the algorithm.

摘要翻译： 一种用于避免车辆中具有由第一和第二电力电子转换器装置共享的高压（HV）直流（DC）总线的方法，例如空调压缩机模块（ACCM）和牵引电力逆变器 （TPIM）包括确定总线的阻抗特性，为总线定义谐振点，为TPIM选择下限和上限开关频率边界，并防止TPIM在由这些边界限定的范围内运行。 车辆包括第一和第二电力电子转换器装置，例如APPM和TPIM，共享HV DC，以及具有上述算法的控制器，其中控制器适于避免HV DC总线中的电共振，由 执行算法。

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。

公开(公告)号：US20120084039A1

公开(公告)日：2012-04-05

申请号：US12895924

申请日：2010-10-01

申请人： Wei D. Wang ,  Steven E. Schulz ,  Jeffrey David ,  Jackie L. Cui ,  Andrew M. Zettel ,  Hanne Buur

发明人： Wei D. Wang ,  Steven E. Schulz ,  Jeffrey David ,  Jackie L. Cui ,  Andrew M. Zettel ,  Hanne Buur

IPC分类号： G01D18/00

CPC分类号： G01D18/006

摘要： A method includes detecting a first event and executing a first procedure to identify a sensor offset in response to detecting the first event. The method further includes determining, via a computing device, whether the sensor offset was measured during the execution of the first procedure, scheduling a second procedure to execute in response to detecting a second event if the sensor offset was not measured during the first procedure, and scheduling the first procedure to execute in response to detecting a subsequent occurrence of the first event if the sensor offset was measured during the first procedure.

摘要翻译： 一种方法包括检测第一事件并且执行第一过程以响应于检测到第一事件来识别传感器偏移。 该方法还包括经由计算设备确定在执行第一过程期间是否测量了传感器偏移量，如果在第一过程期间未测量传感器偏移量，则调度响应于检测到第二事件执行的第二过程， 以及如果在所述第一过程期间测量了所述传感器偏移量，则响应于检测到所述第一事件的后续出现来调度执行所述第一过程。

公开(公告)号：US07923944B2

公开(公告)日：2011-04-12

申请号：US11758941

申请日：2007-06-06

申请人： Steven E. Schulz ,  Terry Murrell

发明人： Steven E. Schulz ,  Terry Murrell

IPC分类号： H02P5/00

CPC分类号： H02P5/74

摘要： A motor control processor is provided for motor phase current sampling of multiple variable frequency controlled electric motors, and includes an analog-to-digital (A/D) converter and a controller. The A/D converter has multiple analog inputs and generates a digital output signal in response to the multiple analog inputs. The controller is coupled to the A/D converter and determines a maximum desired switching frequency for a first one of the multiple variable frequency controlled electric motors. The controller further selects a base period in response to the maximum desired switching frequency and defines a phase shift time delay as a fraction of the base period so the controller may control the multiple analog inputs of the A/D converter to sample motor phase currents of each of the multiple variable frequency controlled electric motors at sample times determined by the controller in response to the base period and the phase shift time delay.

摘要翻译： 提供电动机控制处理器用于多个可变频率控制电动机的电动机相电流采样，并且包括模数（A / D）转换器和控制器。 A / D转换器具有多个模拟输入，并响应多个模拟输入产生数字输出信号。 控制器耦合到A / D转换器，并确定多个可变频率控制的电动机中的第一个的最大期望开关频率。 控制器还响应于最大期望的开关频率选择基准周期，并将相移时间延迟定义为基本周期的一部分，以便控制器可以控制A / D转换器的多个模拟输入以对电机相位电流进行采样 在由控制器响应于基准周期和相移时间延迟确定的采样时间的多个可变频率控制电动机中的每一个。

公开(公告)号：US07659688B2

公开(公告)日：2010-02-09

申请号：US11743709

申请日：2007-05-03

申请人： Steven E. Schulz ,  Sean E Gleason ,  Brian A Welchko

发明人： Steven E. Schulz ,  Sean E Gleason ,  Brian A Welchko

IPC分类号： H02P23/00

CPC分类号： H02P21/06 ,  H02P21/14 ,  H02P2203/05

摘要： Methods and systems are provided for aligning a resolver in an electric motor system. The method includes commanding a d-axis current command and a speed command, operating an electric motor without a load in response to the d-axis current command and the speed command, determining a rotor speed in response to the speed command, and determining an offset of the resolver based on the speed command and the rotor speed when the rotor speed has substantially stabilized.

摘要翻译： 提供了用于对准电动机系统中的旋转变压器的方法和系统。 该方法包括命令d轴电流指令和速度指令，响应于d轴电流指令和速度指令，无负载地操作电动机，响应速度指令确定转子速度，并确定 当转子速度基本上稳定时，基于速度指令和转子速度的旋转变压器的偏移。

公开(公告)号：US20080278106A1

公开(公告)日：2008-11-13

申请号：US11747548

申请日：2007-05-11

申请人： David T. Fu ,  Wei D. Wang ,  Steven E. Schulz

发明人： David T. Fu ,  Wei D. Wang ,  Steven E. Schulz

IPC分类号： G03B27/42

CPC分类号： G03B27/42 ,  G01D5/204

摘要： An apparatus, system, and method are provided for simulating outputs of a resolver. One apparatus includes an adjustable sine waveform generator for simulating first and second sine wave signals, and an adjustable cosine waveform generator for simulating first and cosine wave signals. The apparatus also includes an adjustable waveform generator and an adjustable gain circuit coupled to the sine waveform generator and cosine waveform generator. The system includes a device simulating a resolver coupled to a motor controller. The device includes an adjustable sine waveform generator and an adjustable cosine waveform generator coupled to an adjustable waveform generator and an adjustable gain circuit. One method includes transmitting a signal simulating at least one resolver fault condition to a motor controller to determine if the motor controller detects the fault condition(s). If the motor controller fails to detect the fault condition(s) and/or transmit an error message, the motor controller is malfunctioning.

摘要翻译： 提供了一种用于模拟分解器的输出的装置，系统和方法。 一种装置包括用于模拟第一和第二正弦波信号的可调正弦波形发生器和用于模拟第一和余弦波信号的可调余弦波形发生器。 该装置还包括可调波形发生器和耦合到正弦波形发生器和余弦波形发生器的可调增益电路。 该系统包括模拟与马达控制器耦合的旋转变压器的装置。 该装置包括可调正弦波形发生器和耦合到可调波形发生器和可调增益电路的可调余弦波形发生器。 一种方法包括将模拟至少一个分解器故障状况的信号发送到电动机控制器以确定电动机控制器是否检测到故障状况。 如果电机控制器无法检测到故障状况和/或发送错误信息，则电机控制器发生故障。

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。

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。