公开(公告)号：US07723946B2

公开(公告)日：2010-05-25

申请号：US11736687

申请日：2007-04-18

申请人： Brian A Welchko ,  Steven E. Schulz ,  Silva Hiti

发明人： Brian A Welchko ,  Steven E. Schulz ,  Silva Hiti

IPC分类号： H02P27/04

CPC分类号： H02M1/12 ,  H02P27/08 ,  H03K7/04

摘要： Method and system are provided for controlling an alternating current (AC) motor via an inverter. The method includes selecting a pulse sequencing method based on a modulation index of the inverter, and providing a voltage to the AC motor based on the pulse sequencing method. The system includes an inverter having a modulation index (Mi) and a controller coupled to the inverter. The controller selects a pulse sequencing method based on Mi and produces a signal based on the pulse sequencing method. The inverter includes a switch network producing a voltage in response to the signal, and the voltage drives the AC motor.

摘要翻译： 提供了用于通过逆变器控制交流（AC）电动机的方法和系统。 该方法包括基于逆变器的调制指数选择脉冲排序方法，并且基于脉冲排序方法向交流电动机提供电压。 该系统包括具有调制指数（Mi）的逆变器和耦合到逆变器的控制器。 控制器选择基于Mi的脉冲排序方法，并根据脉冲排序方法产生信号。 逆变器包括响应于信号产生电压的开关网络，并且电压驱动AC电动机。

公开(公告)号：US20080197902A1

公开(公告)日：2008-08-21

申请号：US11676574

申请日：2007-02-20

申请人： Brian A. Welchko ,  Bonho Bae ,  Steven E. Schulz ,  Silva Hiti

发明人： Brian A. Welchko ,  Bonho Bae ,  Steven E. Schulz ,  Silva Hiti

IPC分类号： H03K3/017

CPC分类号： H03K3/017 ,  H02M7/5395 ,  H02M2001/0025 ,  H02P27/06

摘要： Methods and apparatus are provided for reducing voltage distortion effects at low speed operation in electric drives. The method comprises receiving a first signal having a duty cycle with a range between minimum and maximum achievable duty cycles, producing a second duty cycle based on the minimum achievable duty cycle if the duty cycle is within a distortion range and less than a first clipping value, producing a second duty cycle based on the closer of minimum and maximum pulse widths if the duty cycle is within the distortion range and between the first and a second clipping value, producing a second duty cycle based on the maximum achievable duty cycle if the duty cycle is within the distortion range and greater than the second clipping value, and transmitting a second signal to the voltage source inverter having the second duty cycle.

摘要翻译： 提供了用于在电驱动器中降低低速运行时的电压失真效应的方法和装置。 该方法包括接收具有在最小和最大可实现占空比之间的范围的占空比的第一信号，如果占空比在失真范围内并小于第一限幅值，则基于最小可实现占空比产生第二占空比 如果占空比在失真范围内，并且在第一和第二限幅值之间，则基于更小的最小和最大脉冲宽度产生第二占空比，如果占空比基于最大可实现的占空比，则产生第二占空比 循环处于失真范围内并且大于第二限幅值，并且将第二信号发送到具有第二占空比的电压源逆变器。

公开(公告)号：US07411801B2

公开(公告)日：2008-08-12

申请号：US11300249

申请日：2005-12-14

申请人： Brian Welchko ,  Steven E. Schulz ,  Silva Hiti

发明人： Brian Welchko ,  Steven E. Schulz ,  Silva Hiti

IPC分类号： H02M7/537

CPC分类号： H02M7/53871

摘要： Methods and apparatus are provided for modifying a pulse width modulation signal controlling a voltage source inverter. The method comprises the steps of determining a duty cycle of the signal, clipping the duty cycle when a modulation index is greater than a minimum modulation index and less than a maximum modulation index, clipping the duty cycle when the modulation index is greater than or equal to the maximum modulation index, and transmitting the duty cycle to the voltage source inverter. The minimum modulation index indicates a distortion range.

摘要翻译： 提供了用于修改控制电压源逆变器的脉宽调制信号的方法和装置。 该方法包括以下步骤：确定信号的占空比，当调制指数大于最小调制指数并小于最大调制指数时削减占空比，当调制指数大于或等于时限制占空比 到最大调制指数，并将占空比传送到电压源逆变器。 最小调制指数表示失真范围。

公开(公告)号：US20080183405A1

公开(公告)日：2008-07-31

申请号：US11668830

申请日：2007-01-30

申请人： Brian A. Welchko ,  Silva Hiti ,  Steven E. Schulz

发明人： Brian A. Welchko ,  Silva Hiti ,  Steven E. Schulz

IPC分类号： G01L3/00

CPC分类号： H02P23/14

摘要： In an embodiment of a method, the method includes measuring currents and voltages that are coupled to a motor that includes an internal permanent magnet and determining a reactive power in response to the measured currents and voltages. The method further includes estimating a first flux orthogonal to an axis of the internal permanent motor and estimating a second flux aligned with the axis of the internal permanent motor. Additionally, the method includes estimating a torque in response to the measured currents and the first and second fluxes.

摘要翻译： 在方法的实施例中，该方法包括测量耦合到包括内部永磁体的电动机的电流和电压，并响应于测量的电流和电压来确定无功功率。 该方法还包括估计与内部永久电动机的轴正交的第一通量，并估计与内部永久电动机的轴线对准的第二通量。 另外，该方法包括响应于测量的电流和第一和第二通量来估计转矩。

公开(公告)号：US20080116840A1

公开(公告)日：2008-05-22

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： H02P27/04

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。

公开(公告)号：US07218071B1

公开(公告)日：2007-05-15

申请号：US11375429

申请日：2006-03-14

申请人： Brian Welchko ,  Steven E. Schulz ,  Silva Hiti

发明人： Brian Welchko ,  Steven E. Schulz ,  Silva Hiti

IPC分类号： H02P27/06

CPC分类号： H02P6/085 ,  H02P23/03 ,  H02P2209/07

摘要： Methods and apparatus are provided for controlling AC motor torque output. The method comprises the steps of producing a current based on a first comparison of a fundamental output frequency of the AC motor with a predetermined frequency and a second comparison of a magnitude of a commanded current with a predetermined DC current, and supplying the current to the AC motor.

摘要翻译： 提供了用于控制交流电动机转矩输出的方法和装置。 该方法包括以下步骤：基于交流电动机的基本输出频率与预定频率的第一比较以及指令电流的大小与预定直流电流的第二比较产生电流，并将电流提供给 交流电机。

公开(公告)号：US08100799B2

公开(公告)日：2012-01-24

申请号：US11853884

申请日：2007-09-12

申请人： Brian A. Welchko ,  Steven E. Schulz ,  Silva Hiti

发明人： Brian A. Welchko ,  Steven E. Schulz ,  Silva Hiti

IPC分类号： F16H3/72

CPC分类号： F16H3/728 ,  B60K6/445 ,  B60L11/123 ,  B60L11/14 ,  B60L15/025 ,  B60L2200/26 ,  F16H3/66 ,  F16H2037/0866 ,  F16H2037/102 ,  F16H2037/104 ,  F16H2037/106 ,  F16H2200/0043 ,  F16H2200/201 ,  F16H2200/2041 ,  Y02T10/6217 ,  Y02T10/6239 ,  Y02T10/643 ,  Y02T10/646 ,  Y02T10/7005 ,  Y02T10/7077 ,  Y02T10/7258

摘要： Methods and systems for driving an automobile are provided. The system includes a prime mover power source and a two-mode, compound-split, electro-mechanical transmission, including first and second motors, coupled to the prime mover power source, a power inverter coupled to the first and second motors, and a processor coupled to the first and second motors and the power inverter. The processor is configured to modify a signal controlling the power inverter utilizing a first voltage distortion compensation method if a modulation index of the signal is less than a first modulation index value and modify the signal utilizing a second voltage distortion compensation method if the modulation index is at least equal to the first modulation index value.

摘要翻译： 提供了用于驾驶汽车的方法和系统。 该系统包括原动机电源和耦合到原动机电源的耦合到第一和第二电动机的电力逆变器的双模式复合分裂机电变速器，包括第一和第二电动机，以及 处理器耦合到第一和第二电动机和电力逆变器。 处理器被配置为如果信号的调制指数小于第一调制指数值，则使用第一电压失真补偿方法来修改控制功率逆变器的信号，并且如果调制指数为 至少等于第一调制指数值。

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。

公开(公告)号：US07880425B2

公开(公告)日：2011-02-01

申请号：US11944793

申请日：2007-11-26

申请人： Brian A. Welchko ,  Steven E. Schulz ,  Silva Hiti

发明人： Brian A. Welchko ,  Steven E. Schulz ,  Silva Hiti

IPC分类号： H02P27/00

CPC分类号： B60L9/18 ,  B60L11/18 ,  H02P6/08 ,  H02P21/22 ,  H02P27/06 ,  H02P2205/01 ,  Y02T10/643 ,  Y02T10/7005

摘要： In various embodiments, an electric motor drive system (400, FIG. 4) and a motor vehicle (1000, FIG. 10) include an inverter (404, FIG. 4) adapted to generate (604, FIG. 6), based on inverter control inputs, a number, N, of phase current waveforms (118, FIG. 1), and a phase current sampling apparatus (408, FIG. 4) having a same number, N, of current sensors (502, 503, 504, FIG. 5). Each of the current sensors is adapted to receive one of the phase current waveforms, and the current sensors are adapted simultaneously to sample the phase current waveforms and to generate digital values representing amplitudes of the phase current waveforms. The system and motor vehicle also include a controller (410, FIG. 4) adapted to receive the digital values, to perform an evaluation of the digital values, and to generate the inverter control inputs (462, FIG. 4) based on the evaluation.

摘要翻译： 在各种实施例中，电动机驱动系统（400，图4）和机动车辆（图10中的1000）包括适于产生（604，图6）的逆变器（图4），基于 逆变器控制输入，N个相电流波形（图118）和具有相同数量N的电流传感器（502,503,504）的相电流采样装置（408，图4） ，图5）。 每个电流传感器适于接收一个相电流波形，并且电流传感器同时适应于对相电流波形进行采样并产生表示相电流波形幅度的数字值。 系统和机动车辆还包括适于接收数字值的控制器（410，图4），以执行数字值的评估，并且基于评估产生逆变器控制输入（462，图4） 。

公开(公告)号：US07774148B2

公开(公告)日：2010-08-10

申请号：US11668830

申请日：2007-01-30

申请人： Brian A Welchko ,  Silva Hiti ,  Steven E. Schulz

发明人： Brian A Welchko ,  Silva Hiti ,  Steven E. Schulz

IPC分类号： G01L1/00 ,  H02K21/12 ,  H02P23/00 ,  G01R1/20

CPC分类号： H02P23/14

摘要： In an embodiment of a method, the method includes measuring currents and voltages that are coupled to a motor that includes an internal permanent magnet and determining a reactive power in response to the measured currents and voltages. The method further includes estimating a first flux orthogonal to an axis of the internal permanent motor and estimating a second flux aligned with the axis of the internal permanent motor. Additionally, the method includes estimating a torque in response to the measured currents and the first and second fluxes.

摘要翻译： 在方法的实施例中，该方法包括测量耦合到包括内部永磁体的电动机的电流和电压，并响应于测量的电流和电压来确定无功功率。 该方法还包括估计与内部永久电动机的轴正交的第一通量，并估计与内部永久电动机的轴线对准的第二通量。 另外，该方法包括响应于测量的电流和第一和第二通量来估计转矩。