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    Vehicular electrical system and method for controlling an inverter during motor deceleration
    1.
    发明授权
    Vehicular electrical system and method for controlling an inverter during motor deceleration 有权
    车辆电气系统和电机减速期间控制变频器的方法

    公开(公告)号：US08446113B2

    公开(公告)日：2013-05-21

    申请号：US12817950

    申请日：2010-06-17

    申请人： Brian A Welchko ,  Konstantin S. Majarov ,  Silva Hiti ,  Steven E. Schulz ,  Aniket Kothari ,  Nicholas Kokotovich

    发明人： Brian A Welchko ,  Konstantin S. Majarov ,  Silva Hiti ,  Steven E. Schulz ,  Aniket Kothari ,  Nicholas Kokotovich

    IPC分类号： H02P3/14

    CPC分类号： B60L7/06 ,  B60L3/04 ,  B60L7/003 ,  B60L7/08 ,  Y02T10/7258

    摘要： Methods and systems for operating an inverter having a plurality of high switches and a plurality of low switches coupled to an electric motor are provided. An event indicative of deceleration of the electric motor is detected. The inverter is alternated between a first mode of operation and a second mode of operation during the deceleration of the electric motor. In the first mode of operation, each of the plurality of high switches is activated and each of the plurality of low switches is deactivated or each of the plurality of low switches is activated and each of the plurality of high switches is deactivated. In the second mode of operation, each of the plurality of high switches is deactivated and each of the plurality of low switches is deactivated.

    摘要翻译： 提供了用于操作具有多个高开关的逆变器和耦合到电动机的多个低开关的方法和系统。 检测到表示电动机减速的事件。 逆变器在电动机的减速期间在第一操作模式和第二操作模式之间交替。 在第一操作模式中，多个高开关中的每一个被激活，并且多个低开关中的每一个被去激活，或者多个低开关中的每一个被激活，并且多个高开关中的每一个被去激活。 在第二操作模式中，多个高开关中的每一个被去激活，并且多个低开关中的每一个被去激活。

    VEHICULAR ELECTRICAL SYSTEM AND METHOD FOR CONTROLLING AN INVERTER DURING MOTOR DECELERATION
    3.
    发明申请
    VEHICULAR ELECTRICAL SYSTEM AND METHOD FOR CONTROLLING AN INVERTER DURING MOTOR DECELERATION 有权
    在电机减速期间控制逆变器的车辆电气系统和方法

    公开(公告)号：US20110309777A1

    公开(公告)日：2011-12-22

    申请号：US12817950

    申请日：2010-06-17

    申请人： Brian A. Welchko ,  Konstantin S. Majarov ,  Silva Hiti ,  Steven E. Schulz ,  Aniket Kothari ,  Nicholas Kokotovich

    发明人： Brian A. Welchko ,  Konstantin S. Majarov ,  Silva Hiti ,  Steven E. Schulz ,  Aniket Kothari ,  Nicholas Kokotovich

    IPC分类号： H02P3/14

    CPC分类号： B60L7/06 ,  B60L3/04 ,  B60L7/003 ,  B60L7/08 ,  Y02T10/7258

    摘要： Methods and systems for operating an inverter having a plurality of high switches and a plurality of low switches coupled to an electric motor are provided. An event indicative of deceleration of the electric motor is detected. The inverter is alternated between a first mode of operation and a second mode of operation during the deceleration of the electric motor. In the first mode of operation, each of the plurality of high switches is activated and each of the plurality of low switches is deactivated or each of the plurality of low switches is activated and each of the plurality of high switches is deactivated. In the second mode of operation, each of the plurality of high switches is deactivated and each of the plurality of low switches is deactivated.

    摘要翻译： 提供了用于操作具有多个高开关的逆变器和耦合到电动机的多个低开关的方法和系统。 检测到表示电动机减速的事件。 逆变器在电动机的减速期间在第一操作模式和第二操作模式之间交替。 在第一操作模式中，多个高开关中的每一个被激活，并且多个低开关中的每一个被去激活，或者多个低开关中的每一个被激活，并且多个高开关中的每一个被去激活。 在第二操作模式中，多个高开关中的每一个被去激活，并且多个低开关中的每一个被去激活。

    Method and system for controlling a power inverter in electric drives
    4.
    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：US07652443B2

    公开(公告)日：2010-01-26

    申请号：US11923270

    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： H02P7/00

    CPC分类号： B60L15/08 ,  B60L2240/421 ,  B60L2240/423 ,  B60L2240/526 ,  B60L2270/14 ,  Y02T10/645

    摘要： Methods and systems for controlling a power inverter in an electric drive system of an automobile 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。 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。

    Method and system for controlling pulse width modulation in a power inverter in electric drives
    7.
    发明授权
    Method and system for controlling pulse width modulation in a power inverter in electric drives 有权
    电力变频器中脉宽调制控制方法及系统

    公开(公告)号：US07679310B2

    公开(公告)日：2010-03-16

    申请号：US11923293

    申请日：2007-10-24

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

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

    IPC分类号： H02P23/00

    CPC分类号： B60L15/08 ,  B60L11/1803 ,  B60L15/007 ,  B60L15/20 ,  B60L2210/42 ,  B60L2240/421 ,  B60L2240/423 ,  H02P27/08 ,  Y02T10/644 ,  Y02T10/645 ,  Y02T10/7005 ,  Y02T10/7241 ,  Y02T10/7275

    摘要： Methods and systems for controlling a power inverter in an electric drive system of an automobile are provided. The various embodiments control the power inverter by, responsive to either a commanded torque of the electric motor being above a first torque level, or a commanded speed of the electric motor being above a first speed level, controlling the power inverter with a discontinuous pulse width modulated (DPWM) signal to generate a modulated voltage waveform for driving the electric motor. Additionally, the embodiments control the power inverter by, responsive to both a commanded torque of the electric motor being below the first torque level, and a commanded speed of the electric motor being below the first speed level, controlling the power inverter with a continuous pulse width modulated (CPWM) signal to generate the modulated voltage waveform for driving the electric motor.

    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。 各种实施例通过响应于电动机的指令转矩高于第一转矩水平或电动机的指令速度高于第一速度水平来控制功率逆变器，以不连续脉冲宽度控制功率逆变器 调制（DPWM）信号以产生用于驱动电动机的调制电压波形。 此外，这些实施例通过响应于电动机的指令转矩低于第一转矩水平和电动机的指令速度低于第一速度水平来控制功率逆变器，以连续脉冲 宽度调制（CPWM）信号以产生用于驱动电动机的调制电压波形。

    Method and system for operating a motor to reduce noise in an electric vehicle
    8.
    发明授权
    Method and system for operating a motor to reduce noise in an electric vehicle 有权
    用于操作电动机以减少电动车辆噪声的方法和系统

    公开(公告)号：US07576500B2

    公开(公告)日：2009-08-18

    申请号：US11756349

    申请日：2007-05-31

    申请人： Nitinkumar R. Patel ,  Mohammad N. Anwar ,  Silva Hiti ,  Brian A Welchko ,  Steven E. Schulz ,  Lisa M. Talarico

    发明人： Nitinkumar R. Patel ,  Mohammad N. Anwar ,  Silva Hiti ,  Brian A Welchko ,  Steven E. Schulz ,  Lisa M. Talarico

    IPC分类号： H02P1/00

    CPC分类号： H02P27/08 ,  B60L2270/142 ,  H02M1/14 ,  Y02T10/642

    摘要： Methods and systems for operating a motor coupled to an electrical bus in a vehicle are provided. Selected resonant frequencies of the electrical bus are determined. The selected resonant frequencies include a low resonant frequency and a high resonant frequency. Power is provided to the motor through at least one switch operating at a switching frequency. The switching frequency is controlled as a function of a rate of operation of the motor. The function is characterized by one of a first substantially linear portion having a first slope when the switching frequency is less than or equal to a selected switching frequency and a second substantially linear portion having a second slope if the switching frequency is greater than the selected frequency, the selected switching frequency being greater than the low resonant frequency and a substantially linear portion having a y-intercept being greater than the low resonant frequency.

    摘要翻译： 提供了用于操作耦合到车辆中的电气总线的马达的方法和系统。 确定电气总线的选定谐振频率。 所选择的谐振频率包括低谐振频率和高谐振频率。 通过至少一个以开关频率工作的开关将电力提供给电动机。 开关频率根据电机的运行速度进行控制。 该功能的特征在于当开关频率小于或等于所选择的开关频率时具有第一斜率的第一基本线性部分中的一个以及具有第二斜率的第二基本线性部分，如果开关频率大于所选择的频率 ，所选择的开关频率大于低谐振频率，并且具有大于低谐振频率的y截距的基本线性部分。

    Method and apparatus to reduce PWM voltage distortion in electric drives
    9.
    发明授权
    Method and apparatus to reduce PWM voltage distortion in electric drives 有权
    减少电力驱动器中PWM电压失真的方法和装置

    公开(公告)号：US07471526B2

    公开(公告)日：2008-12-30

    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： H02M7/537 ,  H02P23/00

    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。

    METHOD AND SYSTEM FOR OPERATING A MOTOR TO REDUCE NOISE IN AN ELECTRIC VEHICLE
    10.
    发明申请
    METHOD AND SYSTEM FOR OPERATING A MOTOR TO REDUCE NOISE IN AN ELECTRIC VEHICLE 有权
    用于操作电动机以减少电动车噪声的方法和系统

    公开(公告)号：US20080298785A1

    公开(公告)日：2008-12-04

    申请号：US11756349

    申请日：2007-05-31

    申请人： Nitinkumar R. Patel ,  Mohammad N. Anwar ,  Silva Hiti ,  Brian A. Welchko ,  Steven E. Schulz ,  Lisa M. Talarico

    发明人： Nitinkumar R. Patel ,  Mohammad N. Anwar ,  Silva Hiti ,  Brian A. Welchko ,  Steven E. Schulz ,  Lisa M. Talarico

    IPC分类号： H02P7/285

    CPC分类号： H02P27/08 ,  B60L2270/142 ,  H02M1/14 ,  Y02T10/642

    摘要： Methods and systems for operating a motor coupled to an electrical bus in a vehicle are provided. Selected resonant frequencies of the electrical bus are determined. The selected resonant frequencies include a low resonant frequency and a high resonant frequency. Power is provided to the motor through at least one switch operating at a switching frequency. The switching frequency is controlled as a function of a rate of operation of the motor. The function is characterized by one of a first substantially linear portion having a first slope when the switching frequency is less than or equal to a selected switching frequency and a second substantially linear portion having a second slope if the switching frequency is greater than the selected frequency, the selected switching frequency being greater than the low resonant frequency and a substantially linear portion having a y-intercept being greater than the low resonant frequency.

    摘要翻译： 提供了用于操作耦合到车辆中的电气总线的马达的方法和系统。 确定电气总线的选定谐振频率。 所选择的谐振频率包括低谐振频率和高谐振频率。 通过至少一个以开关频率工作的开关将电力提供给电动机。 开关频率根据电机的运行速度进行控制。 该功能的特征在于当开关频率小于或等于所选择的开关频率时具有第一斜率的第一基本线性部分中的一个以及具有第二斜率的第二基本线性部分，如果开关频率大于所选择的频率 ，所选择的开关频率大于低谐振频率，并且具有大于低谐振频率的y截距的基本线性部分。