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    APPARATUS, SYSTEMS, AND METHODS FOR REDUCING VOLTAGE SOURCE INVERTER LOSSES
    11.
    发明申请
    APPARATUS, SYSTEMS, AND METHODS FOR REDUCING VOLTAGE SOURCE INVERTER LOSSES 有权
    降低电压源逆变器损耗的装置，系统和方法

    公开(公告)号：US20080297100A1

    公开(公告)日：2008-12-04

    申请号：US11756421

    申请日：2007-05-31

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

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

    IPC分类号： H02P27/04

    CPC分类号： H02M7/53875 ,  B60L15/025 ,  B60L2210/42 ,  B60L2240/70 ,  H02M2001/0054 ,  H02M2007/53876 ,  Y02T10/643 ,  Y02T10/7241 ,  Y02T10/7291 ,  Y02T90/16

    摘要： Apparatus, systems, and methods are provided for reducing voltage source inverter losses. One apparatus includes a sensor couplable to the motor and configured to sense an operating frequency of the motor and an amount of torque produced by the motor. The apparatus also includes a controller coupled to the sensor, the controller configured to determine a zero vector modulation (ZVM) based on the sensed frequency and torque. A system includes means for sensing a threshold output frequency of the motor and means for sensing a threshold torque of the motor. The system also includes means for determining a ZVM for the inverter based on the sensed threshold frequency and threshold torque. One method includes sensing that a motor is operating below a threshold frequency and is producing torque above a threshold torque amount. The method also includes determining a ZVM for the inverter based on the sensed frequency and torque.

    摘要翻译： 提供了用于减少电压源逆变器损耗的装置，系统和方法。 一种装置包括可耦合到电动机并且被配置为感测电动机的工作频率和由电动机产生的转矩的量的传感器。 该装置还包括耦合到传感器的控制器，该控制器被配置成基于感测到的频率和转矩来确定零矢量调制（ZVM）。 系统包括用于感测电动机的阈值输出频率的装置和用于感测电动机的阈值转矩的装置。 该系统还包括用于基于感测的阈值频率和阈值扭矩来确定用于逆变器的ZVM的装置。 一种方法包括检测电动机工作在阈值频率以下并且产生高于阈值扭矩量的转矩。 该方法还包括基于感测的频率和转矩来确定逆变器的ZVM。

    Electric motor drive systems, motor vehicles, and methods of phase current regulation
    13.
    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） 。

    Torque estimator for IPM motors
    14.
    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
    16.
    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。

    METHOD AND SYSTEM FOR PULSE POSITION SCHEDULING IN ELECTRIC DRIVES
    17.
    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。

    Method and system for controlling a power inverter in electric drives of vehicles with two-mode transmissions
    18.
    发明授权
    Method and system for controlling a power inverter in electric drives of vehicles with two-mode transmissions 有权
    用于控制双模传动车辆电动变频器中的电力变换器的方法和系统

    公开(公告)号：US08165737B2

    公开(公告)日：2012-04-24

    申请号：US11923287

    申请日：2007-10-24

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

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

    IPC分类号： G05D3/00

    CPC分类号： B60W20/15 ,  B60K1/02 ,  B60K6/365 ,  B60K6/445 ,  B60K6/52 ,  B60K6/547 ,  B60L15/20 ,  B60L2200/26 ,  B60L2240/423 ,  B60W10/08 ,  B60W20/00 ,  B60W2710/083 ,  Y02T10/6239 ,  Y02T10/6265 ,  Y02T10/645 ,  Y02T10/72 ,  Y02T10/7275

    摘要： Methods and systems for controlling a power inverter in automobiles utilizing two-mode transmissions are provided. The various embodiments control the power inverter by, responsive to a commanded torque of the electric motor being below a first torque level, controlling the power inverter to set a switching frequency of the power inverter at a first set frequency; and, responsive to the commanded torque of the electric motor being between the first torque level and a second torque level, controlling the power inverter to determine the switching frequency of the power inverter as a function of the commanded torque of the electric motor while maintaining the switching frequency above a dynamic frequency limit. The method reduces switching frequencies in the inverter at high commanded torques, while maintaining the switching frequencies above dynamic frequency limit that provides effective control over the motor.

    摘要翻译： 提供了利用双模传输来控制汽车中的功率逆变器的方法和系统。 各种实施例通过响应于电动机的指令转矩低于第一转矩水平来控制功率逆变器，控制功率逆变器将功率逆变器的开关频率设定在第一设定频率; 并且响应于所述电动机的所述指令转矩在所述第一转矩水平和第二转矩水平之间，控制所述电力逆变器，以根据所述电动机的指令转矩来确定所述电力逆变器的开关频率，同时保持 开关频率高于动态频率限制。 该方法以较高的指令转矩降低变频器的开关频率，同时保持开关频率高于动态频率限制，从而提供对电机的有效控制。

    Phase current sampling and regulating apparatus and methods, and electric motor drive systems
    19.
    发明授权
    Phase current sampling and regulating apparatus and methods, and electric motor drive systems 有权
    相电流采样和调节装置及方法以及电动机驱动系统

    公开(公告)号：US07834574B2

    公开(公告)日：2010-11-16

    申请号：US11944781

    申请日：2007-11-26

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

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

    IPC分类号： H02P1/32

    CPC分类号： G01R19/2509 ,  G01R19/2513 ,  G01R31/007 ,  H02P21/00

    摘要： In various embodiments, a phase current sampling apparatus (300, 600, FIGS. 3, 6), an electric motor drive system (100, FIG. 1), and a motor vehicle (1200, FIG. 12) include switching circuitry adapted to receive first and second phase current waveforms. The switching circuitry provides the first phase current waveform during at least two offset sampling instants, and provides the second phase current waveform during a reference sampling instant. An analog-to-digital converter is adapted to sample the first phase current waveform at the offset sampling instants, and to sample the second phase current waveform at the reference sampling instant. An embodiment of a method for regulating phase current waveforms includes an analog-to-digital converter generating samples of a first phase current waveform at sampling instants that occur before and after a reference sampling instant, and generating a sample of a second phase current waveform at the reference sampling instant.

    摘要翻译： 在各种实施例中，相电流采样装置（300,600，图3,6），电动机驱动系统（100，图1）和机动车辆（图12中的1200）包括适于 接收第一和第二相电流波形。 开关电路在至少两个偏移采样时刻提供第一相电流波形，并且在参考采样时刻期间提供第二相电流波形。 模拟 - 数字转换器适于在偏移采样时刻采样第一相电流波形，并在参考采样时刻采样第二相电流波形。 用于调节相电流波形的方法的实施例包括模数转换器，其在采样时刻产生在采样时刻之前和之后的采样时刻产生第一相电流波形的采样，并且产生第二相电流波形的采样 参考采样时刻。

    Apparatus, systems, and methods for reducing voltage source inverter losses
    20.
    发明授权
    Apparatus, systems, and methods for reducing voltage source inverter losses 有权
    用于减少电压源逆变器损耗的装置，系统和方法

    公开(公告)号：US07755319B2

    公开(公告)日：2010-07-13

    申请号：US11756421

    申请日：2007-05-31

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

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

    IPC分类号： H02P27/04

    CPC分类号： H02M7/53875 ,  B60L15/025 ,  B60L2210/42 ,  B60L2240/70 ,  H02M2001/0054 ,  H02M2007/53876 ,  Y02T10/643 ,  Y02T10/7241 ,  Y02T10/7291 ,  Y02T90/16

    摘要： Apparatus, systems, and methods are provided for reducing voltage source inverter losses. One apparatus includes a sensor couplable to the motor and configured to sense an operating frequency of the motor and an amount of torque produced by the motor. The apparatus also includes a controller coupled to the sensor, the controller configured to determine a zero vector modulation (ZVM) based on the sensed frequency and torque. A system includes means for sensing a threshold output frequency of the motor and means for sensing a threshold torque of the motor. The system also includes means for determining a ZVM for the inverter based on the sensed threshold frequency and threshold torque. One method includes sensing that a motor is operating below a threshold frequency and is producing torque above a threshold torque amount. The method also includes determining a ZVM for the inverter based on the sensed frequency and torque.

    摘要翻译： 提供了用于减少电压源逆变器损耗的装置，系统和方法。 一种装置包括可耦合到电动机并且被配置为感测电动机的工作频率和由电动机产生的转矩的量的传感器。 该装置还包括耦合到传感器的控制器，该控制器被配置成基于感测到的频率和转矩来确定零矢量调制（ZVM）。 系统包括用于感测电动机的阈值输出频率的装置和用于感测电动机的阈值转矩的装置。 该系统还包括用于基于感测的阈值频率和阈值扭矩来确定用于逆变器的ZVM的装置。 一种方法包括检测电动机工作在阈值频率以下并且产生高于阈值扭矩量的转矩。 该方法还包括基于感测的频率和转矩来确定逆变器的ZVM。