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    Protection of motor drive systems from current sensor faults
    2.
    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
    5.
    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
    6.
    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。

    VEHICLE MOTOR TEMPERATURE DETERMINATION
    7.
    发明申请
    VEHICLE MOTOR TEMPERATURE DETERMINATION 有权
    车辆电机温度测定

    公开(公告)号：US20120271606A1

    公开(公告)日：2012-10-25

    申请号：US13090990

    申请日：2011-04-20

    申请人： Chia-Chou YEH ,  Steven E. SCHULZ ,  Daniel J. BERRY

    发明人： Chia-Chou YEH ,  Steven E. SCHULZ ,  Daniel J. BERRY

    IPC分类号： G06G7/48

    CPC分类号： G06F17/5018 ,  F02D41/065 ,  F02D2200/021 ,  F02D2200/022 ,  F02D2200/0414

    摘要： Methods and systems are provided for determining a temperature of a motor of a vehicle having an ignition when the ignition is turned on following a period of time in which the ignition had been turned off. An amount of time for which the vehicle had been turned off is determined. A motor temperature model is run using a time step to simulate the amount of time for which the vehicle had been turned off to determine an initial value of the temperature of the motor.

    摘要翻译： 提供了方法和系统，用于在点火已经关闭的时间段之后，当点火开启时确定具有点火的车辆的电动机的温度。 确定车辆关闭的时间量。 使用时间步长运行电动机温度模型来模拟车辆已经关闭的时间量，以确定电动机的温度的初始值。