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1. 发明授权

US08354817B2 Methods and systems for diagnosing stator windings in an electric motor 有权
标题翻译：用于诊断电动机定子绕组的方法和系统
公开(公告)号：US08354817B2
公开(公告)日：2013-01-15
申请号：US12486910
申请日：2009-06-18
申请人： Chia-Chou Yeh , Steven E. Schulz , Mohammad N. Anwar
发明人： Chia-Chou Yeh , Steven E. Schulz , Mohammad N. Anwar
IPC分类号： H02P23/00
CPC分类号： G01R31/343 , G01R31/024 , H02P21/06 , H02P29/02 , H02P29/0243
摘要： Systems and methods are provided for diagnosing stator windings in an electric motor operating under control of a current-regulating control loop. The current-regulating control loop is configured to provide a command voltage to the electric motor. The command voltage comprises a current-regulated voltage based on a difference between a commanded current and a measured current through the stator windings. The method comprises determining a negative sequence component of the command voltage, and identifying a fault condition when a characteristic of the negative sequence component is greater than a threshold value.
摘要翻译：提供了系统和方法，用于诊断在电流调节控制回路控制下工作的电动机中的定子绕组。电流调节控制回路被配置为向电动机提供指令电压。指令电压包括基于指令电流和通过定子绕组的测量电流之间的差的电流调节电压。所述方法包括确定所述指令电压的负序分量，以及当所述负序分量的特性大于阈值时识别故障状况。

2. 发明授权

US08054084B2 Methods and systems for diagnosing stator windings in an electric motor 有权
标题翻译：用于诊断电动机定子绕组的方法和系统
公开(公告)号：US08054084B2
公开(公告)日：2011-11-08
申请号：US12468362
申请日：2009-05-19
申请人： Steven E. Schulz , Khwaja M. Rahman , Chia-Chou Yeh
发明人： Steven E. Schulz , Khwaja M. Rahman , Chia-Chou Yeh
IPC分类号： G01R31/06
CPC分类号： G01R31/346 , G01R31/024 , G01R31/34
摘要： Systems and methods are provided for identifying a fault condition in stator windings in an electric motor. A method comprises applying a first signal at a first electrical angle to the stator windings and measuring a second signal from the stator windings in response to the first signal. The method further comprises determining a measured response for the electric motor at the first electrical angle based on the second signal and obtaining a nominal response for the electric motor at the first electrical angle. A fault condition is identified when a magnitude of the difference between the measured response and the nominal response is greater than a threshold value.
摘要翻译：提供了用于识别电动机中定子绕组中的故障状况的系统和方法。一种方法包括以第一电角施加第一信号到定子绕组，并响应于第一信号测量来自定子绕组的第二信号。该方法还包括基于第二信号确定第一电角度下的电动机的测量响应，并以第一电角度获得电动机的标称响应。当测量的响应和标称响应之间的差值的大小大于阈值时，识别故障状况。

3. 发明授权

US08762116B2 Vehicle motor temperature determination 有权
标题翻译：汽车电机温度测定
公开(公告)号：US08762116B2
公开(公告)日：2014-06-24
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 , G06F17/50
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。

4. 发明申请

US20120226483A1 MOTOR TEMPERATURE ESTIMATION BASED ON THERMAL MODEL 有权
标题翻译：基于热模型的电机温度估计
公开(公告)号：US20120226483A1
公开(公告)日：2012-09-06
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： G06F17/11 , G06G7/48
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。

5. 发明授权

US08487575B2 Electric motor stator winding temperature estimation 有权
标题翻译：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。

6. 发明授权

US08482237B2 Motor temperature estimation based on thermal model 有权
标题翻译：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。

7. 发明授权

US08185342B2 Estimating rotor angular position and velocity and verifying accuracy of position sensor outputs 有权
标题翻译：估算转子角位置和速度，验证位置传感器输出的精度
公开(公告)号：US08185342B2
公开(公告)日：2012-05-22
申请号：US12541734
申请日：2009-08-14
申请人： Chia-Chou Yeh , Brian A. Welchko , Steven E. Schulz
发明人： Chia-Chou Yeh , Brian A. Welchko , Steven E. Schulz
IPC分类号： G01P3/00
CPC分类号： H02P6/16 , H02P6/15 , H02P6/18
摘要： Methods, system and apparatus are provided for estimating rotor angular position and angular velocity during a position sensor fault, and for verifying the accuracy or inaccuracy of a position sensor's outputs based on the estimated rotor angular position and angular velocity of the rotor following a position sensor fault.
摘要翻译：提供了用于在位置传感器故障期间估计转子角位置和角速度的方法，系统和装置，并且用于基于位置传感器跟随位置传感器的转子的估计的转子角位置和角速度来验证位置传感器的输出的准确性或不准确度故障。

8. 发明授权

US08421391B2 Electric motor stator winding temperature estimation systems and methods 有权
标题翻译：电动机定子绕组温度估算系统及方法
公开(公告)号：US08421391B2
公开(公告)日：2013-04-16
申请号：US12778733
申请日：2010-05-12
申请人： Chia-Chou Yeh , Steven E. Schulz
发明人： Chia-Chou Yeh , Steven E. Schulz
IPC分类号： H02P7/00
CPC分类号： G01K7/42 , G01K13/08 , H02K11/20 , H02P29/64
摘要： An electric motor system includes an electric motor comprising a stator with windings and a rotor configured to operate at a motor speed; a cooling system comprising coolant configured to cool the rotor and the stator, the coolant having a coolant flow rate and a coolant temperature; an inverter module coupled to the electric motor and configured to provide current to the windings based on inverter control signals; a current regulated torque controller coupled to the inverter module and configured to generate the inverter control signals in response to a derated torque command; and a temperature estimation controller coupled to the current regulated torque controller and configured to generate the derated torque command based on an initial torque command and an estimated stator winding temperature. The temperature estimation controller is configured to estimate the estimated stator winding temperature based on the motor speed and the coolant flow rate.
摘要翻译：电动机系统包括电动机，其包括具有绕组的定子和被配置为以电动机速度操作的转子; 冷却系统，其包括被配置为冷却所述转子和所述定子的冷却剂，所述冷却剂具有冷却剂流速和冷却剂温度; 逆变器模块，其耦合到所述电动机并且被配置为基于逆变器控制信号向所述绕组提供电流; 耦合到所述逆变器模块并被配置为响应于降额转矩命令而产生所述逆变器控制信号的电流调节转矩控制器; 以及温度估计控制器，其耦合到所述电流调节转矩控制器，并且被配置为基于初始转矩指令和所估计的定子绕组温度来产生所述降额转矩指令。温度估计控制器被配置为基于电动机速度和冷却剂流量来估计定子绕组温度。

9. 发明授权

US08253365B2 Methods and systems for performing fault diagnostics for rotors of electric motors 有权
标题翻译：用于执行电动机转子故障诊断的方法和系统
公开(公告)号：US08253365B2
公开(公告)日：2012-08-28
申请号：US12582456
申请日：2009-10-20
申请人： Chia-Chou Yeh
发明人： Chia-Chou Yeh
IPC分类号： G01R31/06 , G06F19/00
CPC分类号： G01R31/343
摘要： A method for fault diagnosis for a rotor of an electric motor, the electric motor also having a stator, includes the steps of generating, via a processor, a measured motor current for the stator, determining, via the processor, a resolver angle of the rotor, determining, via the processor, a flux angle of the rotor, calculating, via the processor, a transformation angle using the resolver angle and the flux angle, conducting, via the processor, a transformation of the motor current using the transformation angle, and identifying, via the processor, a fault condition based on the transformation.
摘要翻译：一种用于电动机的转子的故障诊断方法，所述电动机还具有定子，包括以下步骤：经由处理器产生所述定子的测量的电动机电流，经由所述处理器确定所述定子的解算角度转子，通过处理器确定转子的磁通角，经由处理器，使用分解器角度和磁通角计算变换角，通过处理器，使用变换角度对电机电流进行变换，以及经由所述处理器识别基于所述转换的故障状况。

10. 发明授权

US08565954B2 Vehicle motor temperature determination 有权
标题翻译：汽车电机温度测定
公开(公告)号：US08565954B2
公开(公告)日：2013-10-22
申请号：US13267755
申请日：2011-10-06
申请人： Chia-Chou Yeh , Daniel J. Berry , Paul F. Turnbull
发明人： Chia-Chou Yeh , Daniel J. Berry , Paul F. Turnbull
IPC分类号： B60L11/00 , B60K17/00 , F16H59/00 , G06G7/48
CPC分类号： F02D41/14 , F02D2041/1433 , F02N2200/023 , F02N2200/045
摘要： Methods, systems, and vehicles are provided pertaining to the determination of a temperature of a vehicle motor having an ignition when the ignition is turned on following a period of time in which the ignition had been turned off. A memory stores a function having a boundary condition that comprises a prior temperature from when the ignition was turned off. A processor is coupled to the memory. The processor is configured to determine an amount of time for which the ignition has been turned on and determine the temperature of the motor using the function if the amount of time for which the ignition has been turned on is less than a predetermined threshold.
摘要翻译：提供了方法，系统和车辆关于在点火已经关闭的时间段之后点火开启时具有点火的车辆电动机的温度的确定。存储器存储具有边界条件的功能，该边界条件包括从点火开关关闭时的先前温度。处理器耦合到存储器。处理器被配置为确定点火开启的时间量，并且如果点火开启的时间量小于预定阈值，则使用该功能确定电动机的温度。

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