利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

129 条记录 (耗时 0.029 秒)

    Method and system for controlling a power inverter in electric drives of vehicles with two-mode transmissions
    32.
    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
    34.
    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
    35.
    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。

    Method and system for pulse position scheduling in electric drives
    36.
    发明授权
    Method and system for pulse position scheduling in electric drives 有权
    电力驱动器脉冲位置调度方法与系统

    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。

    METHOD AND APPARATUS TO REDUCE PWM VOLTAGE DISTORTION IN ELECTRIC DRIVES
    37.
    发明申请
    METHOD AND APPARATUS TO REDUCE PWM VOLTAGE DISTORTION IN ELECTRIC DRIVES 有权
    降低电动机PWM电压失真的方法和装置

    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。

    TORQUE ESTIMATOR FOR IPM MOTORS
    38.
    发明申请
    TORQUE ESTIMATOR FOR IPM MOTORS 有权
    IPM电机的扭矩估计

    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。