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118 条记录 (耗时 0.035 秒)

    Protection of motor drive systems from current sensor faults
    11.
    发明授权
    Protection of motor drive systems from current sensor faults 有权
    保护电机驱动系统免受电流传感器故障的影响

    公开(公告)号：US08867181B2

    公开(公告)日：2014-10-21

    申请号：US13244052

    申请日：2011-09-23

    申请人： S. M. Nayeem Hasan ,  Steven E. Schulz ,  David P. Tasky

    发明人： S. M. Nayeem Hasan ,  Steven E. Schulz ,  David P. Tasky

    IPC分类号： H02H5/04 ,  H02H3/00 ,  G01R31/34 ,  H02P21/00 ,  H02H7/00 ,  H02P29/02

    CPC分类号： H02P29/022 ,  H02H7/00 ,  H02P21/22 ,  H02P29/0243 ,  H02P29/032

    摘要： Methods and apparatus are provided for detecting a phase current sensor fault in a multi-phase electrical motor. The method comprises, receiving an input torque command T* and measuring a set of feedback signals of the motor including a phase current Ix for each of the phases of the motor, generating direct and quadrature command phase currents Id*, Iq* for the motor corresponding to a value of the input torque command T*, determining a total command current Is=[(Iq*)2+(Id*)2]½, generating a negative sequence current Ineg, where for three phases Ineg=(⅓)[Ia+(α2)Ib+(α)Ic], where α=ej2π/3, combining Ineg and Is to provide a normalized negative sequence current Inn=Ineg/Is, comparing the normalized negative sequence current Inn to a predetermined threshold value INN* to determine the presence of a phase current sensor fault, and executing a control action when Inn>INN*.

    摘要翻译： 提供了用于检测多相电动机中的相电流传感器故障的方法和装置。 该方法包括：接收输入转矩指令T *并测量电动机的一组反馈信号，该电动机的每个相位包括相电流Ix，为电动机产生直接和正交指令相电流Id *，Iq * 对应于输入转矩指令T *的值，确定总指令电流Is = [（Iq *）2+（Id *）2] 1/2，产生负序电流Ineg，其中三相Ineg =（1/3） [Ia +（α2）Ib +（α）Ic]，其中α= ej2＆pgr; / 3，组合Ineg和Is，以提供归一化的负序电流Inn = Ineg / Is，将归一化负序电流Inn与预定阈值INN *确定相电流传感器故障的存在，并在Inn> INN *时执行控制动作。

    Electric motor stator winding temperature estimation
    14.
    发明授权
    Electric motor stator winding temperature estimation 有权
    电动机定子绕组温度估算

    公开(公告)号：US08487575B2

    公开(公告)日：2013-07-16

    申请号：US12568002

    申请日：2009-09-28

    申请人： Chia-Chou Yeh ,  Nitinkumar R. Patel ,  Yo Chan Son ,  Steven E. Schulz

    发明人： Chia-Chou Yeh ,  Nitinkumar R. Patel ,  Yo Chan Son ,  Steven E. Schulz

    IPC分类号： G05D23/00

    CPC分类号： H02P6/08 ,  G01R31/343 ,  H02P29/664

    摘要： A temperature estimation controller and methods are provided for estimating stator winding temperature over a full range of motor operating speeds. In one implementation, the angular velocity of a motor is determined along with a total power loss for each phase of said motor. The total power loss in each phase comprises stator winding power loss and a core power loss. Stator winding temperatures for each phase of motor can then estimated based on the total power loss in that phase, and a combined thermal impedance for that phase. The combined thermal impedance comprises a first thermal impedance between the stator winding and the stator core, and a second thermal impedance between the stator core and the motor coolant.

    摘要翻译： 提供了一种温度估计控制器和方法，用于在整个电机运行速度范围内估计定子绕组温度。 在一个实施方式中，确定电动机的角速度以及所述电动机的每相的总功率损耗。 每相中的总功率损耗包括定子绕组功率损耗和铁芯功率损耗。 然后可以根据该阶段的总功率损耗和该阶段的组合热阻抗来估计电机各相的定子绕组温度。 组合的热阻抗包括定子绕组和定子铁心之间的第一热阻抗，以及定子铁芯和电动机冷却剂之间的第二热阻抗。

    Motor temperature estimation based on thermal model
    15.
    发明授权
    Motor temperature estimation based on thermal model 有权
    基于热模型的电机温度估计

    公开(公告)号：US08482237B2

    公开(公告)日：2013-07-09

    申请号：US13039347

    申请日：2011-03-03

    申请人： Daniel J. Berry ,  Pankaj Mithal ,  Paul F. Turnbull ,  Peter J. Savagian ,  Chia-Chou Yeh ,  Steven E. Schulz

    发明人： Daniel J. Berry ,  Pankaj Mithal ,  Paul F. Turnbull ,  Peter J. Savagian ,  Chia-Chou Yeh ,  Steven E. Schulz

    IPC分类号： H02H7/08

    CPC分类号： B60L3/0061 ,  B60L2220/12 ,  B60L2220/14 ,  B60L2220/18 ,  B60L2240/36 ,  B60L2240/421 ,  B60L2240/423 ,  B60L2240/425 ,  B60L2260/44 ,  G01K7/42 ,  G01K2205/00 ,  Y02T10/642

    摘要： A vehicle includes a power source, a motor, and a computing device. The power source provides electrical energy to the motor, and the motor generates rotational motion from the electrical energy received. The computing device is configured to estimate a temperature of the motor in real time based at least in part on a thermal model of the motor. The thermal model includes a plurality of nodes and at least one thermal resistance. Each node represents a region of the motor and each thermal resistance represents a heat transfer path between at least two of the nodes. A method includes solving one or more energy balance equations to determine a temperature change at each node and estimating the temperature of the motor in real time based at least in part on the temperature change at each node and at least one of the thermal resistances in the thermal model.

    摘要翻译： 车辆包括电源，电动机和计算装置。 电源向电动机提供电能，并且电动机从接收的电能产生旋转运动。 计算设备被配置为至少部分地基于电动机的热模型实时地估计电动机的温度。 热模型包括多个节点和至少一个热阻。 每个节点表示电动机的区域，每个热阻表示至少两个节点之间的热传递路径。 一种方法包括解决一个或多个能量平衡方程以确定每个节点处的温度变化并且至少部分地基于每个节点处的温度变化以及至少一个热电阻来实时估计电动机的温度 热模型。

    MOTOR PHASE WINDING FAULT DETECTION METHOD AND APPARATUS
    19.
    发明申请
    MOTOR PHASE WINDING FAULT DETECTION METHOD AND APPARATUS 有权
    电机相绕组故障检测方法及装置

    公开(公告)号：US20110187304A1

    公开(公告)日：2011-08-04

    申请号：US12698221

    申请日：2010-02-02

    申请人： Mohammad N. Anwar ,  S.M. N. Hasan ,  Khwaja M. Rahman ,  Silva Hiti ,  Steven E. Schulz ,  Sean E. Gleason

    发明人： Mohammad N. Anwar ,  S.M. N. Hasan ,  Khwaja M. Rahman ,  Silva Hiti ,  Steven E. Schulz ,  Sean E. Gleason

    IPC分类号： G01R31/06

    CPC分类号： G01R31/343

    摘要： A method of detecting a phase winding fault in a multi-phase electric machine is executable via a motor controller, and includes measuring feedback signals of the machine, including each phase current, and generating reference phase voltages for each phase. The method includes calculating a predetermined voltage value using the feedback signals and reference phase voltages, and comparing the voltage value to a corresponding threshold to determine the fault. A control action is executed when the voltage value exceeds the corresponding threshold. The voltage value is one or more of: a ratio of a normalized negative sequence voltage to a modulation index, an RMS voltage for each phase, and total harmonic distortion of each phase current. An apparatus detects the fault, and includes a motor controller and an algorithm as set forth above. The apparatus may include a voltage inverter for generating a multi-phase alternating current output for powering the machine.

    摘要翻译： 检测多相电机中的相绕组故障的方法可通过马达控制器执行，并且包括测量机器的反馈信号，包括每个相电流，并产生每相的参考相电压。 该方法包括使用反馈信号和参考相电压来计算预定电压值，并将电压值与相应的阈值进行比较以确定故障。 当电压值超过相应的阈值时，执行控制动作。 电压值是以下中的一个或多个：归一化负序电压与调制指数的比率，每相的RMS电压以及每个相电流的总谐波失真。 一种装置检测故障，并包括如上所述的马达控制器和算法。 该装置可以包括电压逆变器，用于产生用于为机器供电的多相交流输出。

    Electric motor drive systems, motor vehicles, and methods of phase current regulation
    20.
    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） 。