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    Method and system for controlling a power inverter in electric drives
    22.
    发明授权
    Method and system for controlling a power inverter in electric drives 有权
    用于控制电力变频器中的电力变换器的方法和系统

    公开(公告)号：US07888905B2

    公开(公告)日：2011-02-15

    申请号：US12013093

    申请日：2008-01-11

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

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

    IPC分类号： H02P27/04

    CPC分类号： H02M7/53875 ,  H02M2007/53876

    摘要： Methods and systems for controlling a power inverter in an electric drive system of an automobile are provided. A signal controlling the power inverter is modified utilizing a first voltage distortion compensation method if a modulation index of the signal is less than a first modulation index value. The signal is modified 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： 提供了一种用于控制汽车电驱动系统中的电力逆变器的方法和系统。 如果信号的调制指数小于第一调制指数值，则利用第一电​​压失真补偿方法来修改控制功率逆变器的信号。 如果调制指数至少等于第一调制指数值，则利用第二电压失真补偿方法修改信号。

    METHOD AND SYSTEM FOR PULSE POSITION SCHEDULING IN ELECTRIC DRIVES
    24.
    发明申请
    METHOD AND SYSTEM FOR PULSE POSITION SCHEDULING IN ELECTRIC DRIVES 有权
    电机驱动脉冲位置调度方法与系统

    公开(公告)号：US20080258673A1

    公开(公告)日：2008-10-23

    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： H02P27/08 ,  H02M1/12

    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（M SUB）的逆变器和耦合到逆变器的控制器。 控制器选择基于M i i i的脉冲排序方法，并基于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。

    Electric motor drive systems, motor vehicles, and methods of phase current regulation
    26.
    发明授权
    Electric motor drive systems, motor vehicles, and methods of phase current regulation 有权
    电动机驱动系统，机动车辆和相电流调节方法

    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） 。

    Method and system for operating an electric motor coupled to multiple power supplies
    27.
    发明授权
    Method and system for operating an electric motor coupled to multiple power supplies 有权
    用于操作耦合到多个电源的电动马达的方法和系统

    公开(公告)号：US07800331B2

    公开(公告)日：2010-09-21

    申请号：US11945368

    申请日：2007-11-27

    申请人： Sibaprasad Chakrabarti ,  Brian A. Welchko ,  Silva Hiti

    发明人： Sibaprasad Chakrabarti ,  Brian A. Welchko ,  Silva Hiti

    IPC分类号： H02P1/00

    CPC分类号： H02P27/08 ,  H02P2209/03 ,  Y02T10/7258

    摘要： Methods and systems are provided for operating an electric motor having at least one winding coupled to first and second power supplies. A torque command for the electric motor is received. A present power reserve for the first and second power supplies is determined based at least in part on the torque command. An operating voltage for the second power supply is determined based on the present power reserve. The operating voltage for the second power supply is applied to the at least one winding. The application of the operating voltage allowing the present power reserve to flow between the first and second power supplies and the motor.

    摘要翻译： 提供了用于操作具有耦合到第一和第二电源的至少一个绕组的电动机的方法和系统。 接收到电动机的转矩指令。 至少部分地基于转矩指令来确定用于第一和第二电源的当前功率储备。 基于当前动力储备来确定第二电源的工作电压。 第二电源的工作电压被施加到至少一个绕组。 施加允许当前功率储备在第一和第二电源和电动机之间流动的工作电压。

    Torque estimator for IPM motors
    28.
    发明授权
    Torque estimator for IPM motors 有权
    IPM电机的扭矩估计器

    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。

    Dead-time compensation method for electric drives
    30.
    发明授权
    Dead-time compensation method for electric drives 有权
    电驱动器的死区补偿方法

    公开(公告)号：US07286375B1

    公开(公告)日：2007-10-23

    申请号：US11625962

    申请日：2007-01-23

    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： H02M1/12 ,  H02M7/68 ,  H02M7/44

    CPC分类号： H02M7/53803 ,  H02M2001/385

    摘要： Methods and apparatus are provided for compensating for a deviation in voltage output of a phase leg inverter when dead-time periods are inserted to prevent shoot-through failures. The method includes determining a pulse width for an input signal to the inverter such that the inverter voltage output is a desired amount. The pulse width is based on the non-inverted or inverted pulse sequences of two carrier signals and the polarity of current through the inverter. An amount of pulse width is added to the input signal when the current is positive, and an amount of pulse width is subtracted from the input signal when the current is negative. An additional amount of pulse width is added to or subtracted from the input signal depending on whether the carrier signal sequence changes from a non-inverted signal to an inverted signal or changes from an inverted signal to a non-inverted signal, respectively.

    摘要翻译： 提供了方法和装置，用于在插入死区时间时补偿相位臂逆变器的电压输出偏差，以防止直通故障。 该方法包括：确定用于反相器的输入信号的脉冲宽度，使得逆变器电压输出为期望的量。 脉冲宽度基于两个载波信号的非反相或反相脉冲序列以及通过反相器的电流极性。 当电流为正时，将一定量的脉冲宽度加到输入信号上，当电流为负时，从输入信号中减去一定量的脉冲宽度。 根据载波信号序列是否从非反相信号改变为反相信号，或分别从反相信号改变为非反相信号，将附加量的脉冲宽度加到输入信号或从输入信号中减去。