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22 条记录 (耗时 0.023 秒)

    Method and apparatus for reducing noise and vibration in switched reluctance motor drives
    1.
    发明授权
    Method and apparatus for reducing noise and vibration in switched reluctance motor drives 失效
    用于降低开关磁阻电动机驱动器中的噪声和振动的方法和装置

    公开(公告)号：US06922036B1

    公开(公告)日：2005-07-26

    申请号：US09998735

    申请日：2001-11-30

    申请人： Mehrdad Ehsani ,  Babak Fahimi

    发明人： Mehrdad Ehsani ,  Babak Fahimi

    IPC分类号： H02P1/46 ,  H02P3/18 ,  H02P25/08 ,  H02P5/28 ,  H02P7/36

    CPC分类号： H02P25/098

    摘要： According to one embodiment of the invention, a method includes generating, by a computer, a phase current profile, generating a phase current according to the phase current profile, and applying the phase current to the switched reluctance motor drive. Generating the phase current profile includes initializing one or more first profile parameters which define at least a first portion of the phase current profile. Generating the phase current profile also includes determining whether a first performance criterion is satisfied based on operation of the switched reluctance motor drive using the first profile parameters. Generating the phase current profile also includes updating at least one the first profile parameters if the first performance criterion is not satisfied.

    摘要翻译： 根据本发明的一个实施例，一种方法包括由计算机产生相电流分布，根据相电流分布产生相电流，以及将相电流施加到开关磁阻电机驱动器。 生成相电流分布包括初始化限定相电流分布的至少第一部分的一个或多个第一分布参数。 生成相电流轮廓还包括基于使用第一轮廓参数的开关磁阻电机驱动器的操作来确定是否满足第一性能标准。 如果不满足第一性能标准，则生成相电流分布还包括更新至少一个第一简档参数。

    Methods and apparatuses for fault management in permanent magnet synchronous machines using the field reconstruction method
    6.
    发明授权
    Methods and apparatuses for fault management in permanent magnet synchronous machines using the field reconstruction method 有权
    使用现场重建方法对永磁同步电机进行故障管理的方法和装置

    公开(公告)号：US08314576B2

    公开(公告)日：2012-11-20

    申请号：US12838442

    申请日：2010-07-17

    申请人： Babak Fahimi ,  Amir Khoobroo

    发明人： Babak Fahimi ,  Amir Khoobroo

    IPC分类号： H02P6/12 ,  H02P23/14

    CPC分类号： H02P23/14 ,  H02P21/141 ,  H02P23/12 ,  H02P2207/05

    摘要： Methods and apparatuses for detecting faults and optimizing phase currents in an electromechanical energy converter are disclosed. An example method comprises: measuring a current of a phase of the electromechanical energy converter, modeling the electromechanical energy converter with the current measurement input into a field reconstruction module, calculating a flux linkage of the electromechanical energy converter, comparing the flux linkage with a flux linkage from a no fault electromechanical energy converter, and optimizing the current of the phase of the electromechanical energy converter in response to the comparison. Other embodiments are described and claimed.

    摘要翻译： 公开了用于检测机电能量转换器中的故障和优化相电流的方法和装置。 一个示例性方法包括：测量机电能量转换器的相的电流，利用电流测量输入将机电能量转换器建模到场重构模块中，计算机电能量转换器的磁链，将磁通与通量 从无故障机电能量转换器的连接，以及响应于比较优化机电能量转换器的相位的电流。 描述和要求保护其他实施例。

    Estimation of state-of-health in batteries
    7.
    发明授权
    Estimation of state-of-health in batteries 有权
    电池中健康状况的估计

    公开(公告)号：US09366732B2

    公开(公告)日：2016-06-14

    申请号：US12876976

    申请日：2010-09-07

    申请人： Babak Fahimi ,  Anahita Banaei

    发明人： Babak Fahimi ,  Anahita Banaei

    IPC分类号： G01R31/36 ,  G01R31/02

    CPC分类号： G01R31/3679 ,  G01R31/025 ,  G01R31/3651

    摘要： Estimation of a state-of-health (SOH) in a battery are disclosed. An example technique includes determining if a terminal voltage of the chemical battery differs from a calculated terminal voltage. In response to determining that the terminal voltage of the chemical battery differs from the calculated terminal voltage, calculating a range of voltages by taking the convolution of a terminal current of the chemical battery with a range of impulse responses from a look up table of impulse responses corresponding to different SOH. The technique further includes comparing the terminal voltage of the chemical battery with the range of calculated voltages to determine a second impulse response that corresponds to the case where the terminal voltage matches the calculated voltage. The look up table of impulse responses corresponding to different SOHs is then used to determine the SOH of the chemical battery from the second impulse response.

    摘要翻译： 公布了电池中健康状况（SOH）的估计。 一个示例技术包括确定化学电池的端电压是否与计算的端电压不同。 响应于确定化学电池的端电压与计算的端电压不同，通过将化学电池的端电流与脉冲响应的查询表的脉冲响应范围进行卷积来计算电压范围 对应不同的SOH。 该技术还包括将化学电池的端电压与计算出的电压的范围进行比较，以确定对应于端电压与计算电压相匹配的情况的第二脉冲响应。 然后使用与不同SOH相对应的脉冲响应的查找表从第二脉冲响应确定化学电池的SOH。

    Techniques and apparatus for the measurement of mutual inductance in a switched reluctance machine
    8.
    发明授权
    Techniques and apparatus for the measurement of mutual inductance in a switched reluctance machine 有权
    用于测量开关磁阻电机中的互感的技术和装置

    公开(公告)号：US08125170B2

    公开(公告)日：2012-02-28

    申请号：US12140232

    申请日：2008-06-16

    申请人： Babak Fahimi ,  Umamaheshwar Krishnamurthy

    发明人： Babak Fahimi ,  Umamaheshwar Krishnamurthy

    IPC分类号： H02P6/00

    CPC分类号： G01R31/34 ,  G01R27/2611 ,  H02P25/089

    摘要： A system and technique for measuring the mutual inductance in a switched reluctance machine (SRM). In a first example embodiment of the technique, a voltage pulse is applied to primary coil when the machine is stationery. By measuring current in the primary coil and measuring induced voltages in adjacent open circuited coils mutual inductance may be determined. In another example embodiment, a voltage pulse is applied to the primary coil when the machine is stationery. The secondary coil is allowed to freewheel current through the phase. By measuring time taken by the primary phase to reach a preset value, the mutual inductance for the known position of a rotor can be determined.

    摘要翻译： 用于测量开关磁阻电机（SRM）中互感的系统和技术。 在该技术的第一示例性实施例中，当机器是文具时，将电压脉冲施加到初级线圈。 通过测量初级线圈中的电流并测量相邻开路线圈中的感应电压，可以确定互感。 在另一个示例实施例中，当机器是文具时，电压脉冲被施加到初级线圈。 允许次级线圈使电流通过相位。 通过测量主相达到预设值所花费的时间，可以确定转子已知位置的互感。

    Methods and apparatuses for elimination of torque pulsation in doubly fed induction generators using the field reconstruction method
    9.
    发明授权
    Methods and apparatuses for elimination of torque pulsation in doubly fed induction generators using the field reconstruction method 有权
    使用场重构方法消除双馈感应发电机中的转矩脉动的方法和装置

    公开(公告)号：US08742733B2

    公开(公告)日：2014-06-03

    申请号：US13098273

    申请日：2011-04-29

    申请人： Morgan M. Kiani ,  Wei Wang ,  Babak Fahimi ,  Wei-Jen Lee

    发明人： Morgan M. Kiani ,  Wei Wang ,  Babak Fahimi ,  Wei-Jen Lee

    IPC分类号： H02P9/00 ,  H02P9/04

    CPC分类号： H02P9/007 ,  H02P27/05 ,  H02P2101/15 ,  H02P2207/01

    摘要： Methods and apparatuses for substantially eliminating torque pulsation in a doubly fed induction machine are disclosed. An example method comprises: measuring a stator current of the doubly fed induction machine, measuring a rotor current of the doubly fed induction machine, calculating a total magnetic flux density in an airgap of the doubly fed induction machine, calculating a tangential force density, calculating an electromagnetic torque, repeating the calculation of the electromagnetic torque over one electrical cycle to estimate a torque pulsation, determining a new rotor current that substantially eliminates the torque pulsation by referencing a set of optimal rotor currents in a look-up table, and changing the rotor current in response to the determination. Other embodiments are described and claimed.

    摘要翻译： 公开了用于基本上消除双馈感应电机中的扭矩脉动的方法和装置。 一个示例方法包括：测量双馈感应电机的定子电流，测量双馈感应电机的转子电流，计算双馈感应电机的气隙中的总磁通密度，计算切向力密度，计算 电磁转矩，重复在一个电循环上的电磁转矩的计算以估计转矩脉动，通过参考查找表中的一组最佳转子电流来确定基本上消除转矩脉动的新转子电流，并且 转子电流响应确定。 描述和要求保护其他实施例。

    Estimation of State-Of-Health in Batteries
    10.
    发明申请
    Estimation of State-Of-Health in Batteries 有权
    电池状态估计

    公开(公告)号：US20110060538A1

    公开(公告)日：2011-03-10

    申请号：US12876976

    申请日：2010-09-07

    申请人： Babak Fahimi ,  Anahita Banaei

    发明人： Babak Fahimi ,  Anahita Banaei

    IPC分类号： G01R31/36

    CPC分类号： G01R31/3679 ,  G01R31/025 ,  G01R31/3651

    摘要： Methods and apparatuses for estimation of a state-of-health in a battery are disclosed. An example method comprises: determining if a terminal voltage of the chemical battery differs from a calculated terminal voltage; in response to determining that the terminal voltage of the chemical battery differs from the calculated terminal voltage, calculating a range of voltages by taking the convolution of a terminal current of the chemical battery with a range of impulse responses from a look up table of impulse responses corresponding to different states-of-health; comparing the terminal voltage of the chemical battery with the range of calculated voltages to determine a second impulse response that corresponds to the case where the terminal voltage matches the calculated voltage; and using the look up table of impulse responses corresponding to different states-of-health to determine the state-of-health of the chemical battery from the second impulse response. Other embodiments are described and claimed.

    摘要翻译： 公开了用于估计电池中的健康状况的方法和装置。 一种示例性方法包括：确定化学电池的端电压是否与计算的端电压不同; 响应于确定化学电池的端电压与计算出的端电压不同，通过将化学电池的端电流与脉冲响应的查询表中的脉冲响应范围进行卷积来计算电压范围 对应于不同的健康状况; 将化学电池的端子电压与计算出的电压的范围进行比较，以确定对应于端子电压与计算出的电压匹配的情况的第二脉冲响应; 以及使用对应于不同健康状况的脉冲响应的查找表来确定来自第二脉冲响应的化学电池的健康状态。 描述和要求保护其他实施例。