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46 条记录 (耗时 0.026 秒)

    Redundant DC bus discharge for an electric motor system
    2.
    发明授权
    Redundant DC bus discharge for an electric motor system 有权
    用于电动机系统的冗余直流母线放电

    公开(公告)号：US07944160B2

    公开(公告)日：2011-05-17

    申请号：US12047120

    申请日：2008-03-12

    申请人： Silva Hiti ,  David Tang ,  Brian A. Welchko ,  Milun Perisic ,  Constantin C. Stancu

    发明人： Silva Hiti ,  David Tang ,  Brian A. Welchko ,  Milun Perisic ,  Constantin C. Stancu

    IPC分类号： H02P21/00

    CPC分类号： H02P21/0003 ,  H02M2001/322

    摘要： Methods and apparatus are provided for discharging a direct current (DC) bus providing power to a motor control circuit in an electric motor system. The method includes the steps of detecting a predetermined discharge signal and generating operational control signals comprising phase currents for dissipating energy from the DC bus through a passive load in response to detecting the predetermined discharge signal, wherein the passive load includes motor windings of an electric motor of the electric motor system. The method also includes the step of providing the operational control signals to the motor control circuit for discharging the DC bus through the motor control circuit and the motor windings of the electric motor.

    摘要翻译： 提供了用于对在电动机系统中的电动机控制电路供电的直流（DC）总线的放电的方法和装置。 该方法包括以下步骤：响应于检测到预定的放电信号，产生包括用于从DC总线通过无源负载消耗能量的相电流的操作控制信号，其中被动负载包括电动机的电动机绕组 的电机系统。 该方法还包括向电动机控制电路提供操作控制信号以通过电动机控制电路和电动机的电动机绕组排放DC总线的步骤。

    DC bus discharge in an electric motor system
    4.
    发明授权
    DC bus discharge in an electric motor system 有权
    直流母线放电在电动马达系统中

    公开(公告)号：US07944161B2

    公开(公告)日：2011-05-17

    申请号：US12047123

    申请日：2008-03-12

    申请人： Silva Hiti ,  David Tang ,  Brian A. Welchko ,  Milun Perisic ,  Constantin C. Stancu

    发明人： Silva Hiti ,  David Tang ,  Brian A. Welchko ,  Milun Perisic ,  Constantin C. Stancu

    IPC分类号： H02P21/00

    CPC分类号： H02P27/06 ,  H02P3/22 ,  H02P23/10

    摘要： Methods and apparatus are provided for improved discharge of a DC bus which provides power to an inverter. An electric motor system provided with the improved discharge method for discharge of the DC bus includes an electric motor, the inverter which provides electric control for the permanent magnet electric motor, the direct current (DC) bus which provides power to the inverter, and a processor. The processor generates operational control signals and provides such operational control signals to the inverter. In response to detecting a predetermined discharge signal, the processor generates operational control signals for generating a ripple current in motor windings of the electric motor to dissipate energy from the DC bus through a passive load, the passive load including the motor windings of the electric motor.

    摘要翻译： 提供了用于改进向逆变器提供电力的DC总线的放电的方法和装置。 具有改善的用于排放DC总线的放电方法的电动机系统包括电动机，为永磁电动机提供电力控制的逆变器，向逆变器供电的直流（DC）总线，以及 处理器。 处理器产生操作控制信号，并向变频器提供这种操作控制信号。 响应于检测到预定的放电信号，处理器产生用于在电动机的电动机绕组中产生纹波电流的操作控制信号，以通过无源负载从DC总线耗散能量，包括电动机的电动机绕组的被动负载 。

    Prediction of transistor temperature in an inverter power module of a vehicle, and related operating methods
    8.
    发明授权
    Prediction of transistor temperature in an inverter power module of a vehicle, and related operating methods 有权
    车辆逆变器功率模块中晶体管温度的预测及相关操作方法

    公开(公告)号：US08847427B2

    公开(公告)日：2014-09-30

    申请号：US13221667

    申请日：2011-08-30

    申请人： Khiet Le ,  Gregory D. Rosdahl ,  David Tang ,  Seok-Joo Jang ,  Song He

    发明人： Khiet Le ,  Gregory D. Rosdahl ,  David Tang ,  Seok-Joo Jang ,  Song He

    IPC分类号： B60L1/00

    CPC分类号： H02P27/06 ,  B60L3/003 ,  B60L2240/525 ,  B60L2260/44 ,  H02M1/32 ,  H02M2001/327 ,  Y02T10/642

    摘要： A power module system for a vehicle includes a circuit board, a power transistor mounted to the circuit board, and a temperature sensor mounted to the circuit board in a sensing location remote from the power transistor. The temperature sensor is configured to measure a real-time temperature at the sensing location. The system also includes a processor coupled to the temperature sensor to generate a predicted real-time silicon temperature for the power transistor from the measured real-time temperature at the sensing location. The predicted real-time silicon temperature is generated using a selected calibration curve that corresponds to a current operating state of the vehicle.

    摘要翻译： 用于车辆的电源模块系统包括电路板，安装到电路板的功率晶体管和安装在远离功率晶体管的感测位置中的电路板的温度传感器。 温度传感器被配置为测量感测位置处的实时温度。 该系统还包括耦合到温度传感器的处理器，以从感测位置处测量的实时温度产生功率晶体管的预测实时硅温度。 使用对应于车辆的当前操作状态的所选择的校准曲线来生成预测的实时硅温度。

    Systems and methods for monitoring current in an electric motor
    9.
    发明授权
    Systems and methods for monitoring current in an electric motor 有权
    用于监测电动机电流的系统和方法

    公开(公告)号：US08558496B2

    公开(公告)日：2013-10-15

    申请号：US13049653

    申请日：2011-03-16

    申请人： Brian A. Welchko ,  Silva Hiti ,  Ronald W. Young ,  David Tang ,  Gregory S. Smith

    发明人： Brian A. Welchko ,  Silva Hiti ,  Ronald W. Young ,  David Tang ,  Gregory S. Smith

    IPC分类号： G05B5/00

    CPC分类号： B60L3/0038 ,  B60L2240/429 ,  B60L2240/529 ,  H02P29/027 ,  H02P29/032 ,  Y02T10/642

    摘要： Systems and methods are provided for monitoring current in an electric motor. An electrical system includes a (DC) interface, an electric motor, an inverter module coupled between the DC interface and the electric motor, a first current sensor between a first phase leg of the inverter module and a first phase of the electric motor to measure a first current flowing through the first phase of the electric motor, a second current sensor between the first phase leg and the DC interface to measure a second current flowing through the first phase leg, and a control module coupled to the first current sensor and the second current sensor. The control module is configured to initiate remedial action based at least in part on a difference between the first current measured by the first current sensor and the second current measured by the second current sensor.

    摘要翻译： 提供了用于监视电动机中的电流的系统和方法。 电气系统包括（DC）接口，电动机，耦合在DC接口和电动机之间的逆变器模块，在逆变器模块的第一相支路和电动机的第一相之间的第一电流传感器，以测量 流过电动机的第一相的第一电流，在第一相支路和DC接口之间的第二电流传感器，以测量流过第一相支线的第二电流;以及控制模块，耦合到第一电流传感器和 第二电流传感器。 控制模块被配置为至少部分地基于由第一电流传感器测量的第一电流与由第二电流传感器测量的第二电流之间的差异来启动补救动作。

    Method of determining at least one refraction characteristic of an ophthalmic lens
    10.
    发明授权
    Method of determining at least one refraction characteristic of an ophthalmic lens 有权
    确定眼科镜片的至少一个折射特性的方法

    公开(公告)号：US09052253B2

    公开(公告)日：2015-06-09

    申请号：US13884069

    申请日：2011-11-28

    申请人： Stephane Boutinon ,  David Tang

    发明人： Stephane Boutinon ,  David Tang

    IPC分类号： G01M11/02

    CPC分类号： G01M11/0228 ,  G01M11/0214

    摘要： Method of determining at least one refractive characteristic of an ophthalmic lens, includes: a) placing the lens on a support having at least one prop element contacting one of the main faces of the lens in a contact zone area smaller than that of the main faces; b) lighting the lens placed on its support with lighting elements; c) capturing an image of the prop element of the support lighted by light rays that have passed through the lens, the image being captured in an image capture plane substantially perpendicular to an optical axis of the lens; d) in the image, identifying the image of the prop element of the support and determining at least one characteristic representative of the geometry of the image of the prop element; and e) from the characteristic representative of the geometry of the image of the prop element, deducing the looked-for refractive characteristic.

    摘要翻译： 确定眼用透镜的至少一种折射特性的方法包括：a）将透镜放置在具有至少一个支撑元件的支撑件上，所述至少一个支撑元件接触所述透镜的主面之一的接触区域小于所述主表面 ; b）用照明元件照亮放置在其支架上的镜头; c）拍摄通过透镜的光线照射的支撑物的支柱元件的图像，该图像被捕获在基本上垂直于透镜的光轴的图像捕获平面中; d）在图像中，识别支撑件的支撑元件的图像，并且确定表示支柱元件的图像的几何形状的至少一个特征; 和e）从表示支撑元件的图像的几何形状的特征，推导出所寻找的折射特性。