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    • 84. 发明申请
    • RELIABLE CURRENT SENSING FOR INVERTER-CONTROLLED ELECTRIC MACHINE
    • 用于逆变电机的可靠电流检测
    • US20160261213A1
    • 2016-09-08
    • US14639153
    • 2015-03-05
    • FORD GLOBAL TECHNOLOGIES, LLC
    • JASWANT S. GARCHA
    • H02P6/00B60L11/18H02K11/00
    • H02K11/27B60L11/1803G01R15/202G01R31/343G01R31/42H02K11/0094H02K11/33H02P6/005H02P6/08H02P27/06H02P27/08
    • Phase currents of an inverter-driven electric machine are measured by mounting phase conductors of each respective phase current into a central passage of a respective flux core. A plurality of current sensors are mounted into a gap of each respective flux core to generate a respective plurality of current signals for each phase current. The Hall-effect devices are connected to a plurality of multi-channel op amp devices for conditioning the current signals such that each set of Hall-effect devices is connected to a different one of the op amp devices and such that each op amp device receives one current signal corresponding to each phase current. Thus, a valid conditioned current signal corresponding to each phase conductor is generated by the op amp devices unless there are multiple simultaneous failures of the Hall-effect devices and the op amp devices.
    • 逆变器驱动电机的相电流通过将各相电流的相导体安装到各磁通芯的中心通路来测定。 多个电流传感器安装在每个相应的磁通芯的间隙中,以产生每个相电流的相应的多个电流信号。 霍尔效应器件连接到多个多通道运算放大器器件,用于对电流信号进行调理,使得每组霍尔效应器件连接到运算放大器件中的不同器件,并且每个运放器件接收 一个电流信号对应于每个相电流。 因此,除了霍尔效应器件和运算放大器件的多个同时故障之外,由运算放大器器件产生对应于每个相导体的有效调节电流信号。
    • 90. 发明授权
    • Method of diagnosing a blocked heat exchanger
    • 诊断堵塞式热交换器的方法
    • US09383414B2
    • 2016-07-05
    • US14473007
    • 2014-08-29
    • Atieva, Inc.
    • Jean-Philippe Gauthier
    • G01R31/34
    • G01R31/343F01P11/14F01P2025/66F01P2050/22
    • A method is provided for testing the performance of a vehicle-mounted heat exchanger and determining whether debris is preventing air from efficiently passing through the heat exchanger. To test performance, after the vehicle is traveling faster than a preset minimum speed, the power to the DC fan motor that is adjacent to the heat exchanger is interrupted and the back EMF of the motor is used to determine fan motor speed. As rotation of the unpowered fan motor is due to the air flowing through the heat exchanger, the rate of fan rotation is used to indicate the relative health of the heat exchanger. If the rotation of the fan motor indicates insufficient air flow, then a notification message (e.g., visual or auditory warning indicator) is transmitted. If the test indicates sufficient air flow, normal operation of the fan motor is re-initiated and power is re-connected to the motor.
    • 提供了一种用于测试车载热交换器的性能并确定碎片是否阻止空气有效地通过热交换器的方法。 为了测试性能,在车辆行驶速度比预设的最小速度快之后,与热交换器相邻的直流风扇马达的电力被中断,电机的反电动势用于确定风扇电机的速度。 由于无电动风扇马达的旋转是由于空气流过热交换器,所以风扇旋转速率用于表示热交换器的相对健康状况。 如果风扇马达的旋转表示气流不足,则发送通知信息(例如视觉或听觉警告指示符)。 如果测试表明有足够的空气流量,则重新启动风扇电机的正常运行,并将电源重新连接到电机。