DC-DC power converter and control method
    21.
    发明授权
    DC-DC power converter and control method 有权
    DC-DC电源转换器及控制方式

    公开(公告)号:US08188616B2

    公开(公告)日:2012-05-29

    申请号:US12732510

    申请日:2010-03-26

    IPC分类号: B60L1/00 B60L3/00 H02G3/00

    摘要: A vehicle includes a high-voltage (HV) energy storage system (ESS), an HV power bus, a DC-DC power converter electrically connected to the HV power bus, an HV bus connector, a low voltage (LV) battery power bus, and a pair of LV bus connectors. The vehicle includes a vehicle module electrically connected to the HV and LV bus connectors, an LV power bus electrically connected to the DC-DC power converter and to the module, and a controller. The controller has an algorithm that controls the converter to power the module via one of the LV bus connectors during a transient LV condition. The converter and a method of controlling the same are also provided, with the method including determining the LV condition, powering the vehicle module via one of the LV bus connectors during the transient LV condition, and powering the module via the other LV connector otherwise.

    摘要翻译: 车辆包括高压(HV)储能系统(ESS),高压电源总线,电连接到高压电源总线的直流 - 直流电力转换器,高压总线连接器,低压(LV)电池电源总线 ,以及一对LV总线连接器。 车辆包括电连接到HV和LV总线连接器的车辆模块,电连接到DC-DC电力转换器和模块的LV电力总线以及控制器。 控制器具有一个算法,控制转换器在瞬态LV状态期间通过其中一个LV总线连接器为模块供电。 还提供了转换器及其控制方法,该方法包括确定LV状态,并且在瞬态LV状态期间通过LV总线连接器中的一个为车辆模块供电,以及另外通过另一个LV连接器为模块供电。

    SYSTEM AND METHOD FOR DETECTING LOSS OF ISOLATION WHILE AN AC MOTOR IS OPERATING
    24.
    发明申请
    SYSTEM AND METHOD FOR DETECTING LOSS OF ISOLATION WHILE AN AC MOTOR IS OPERATING 有权
    用于检测交流电机运行时的隔离损失的系统和方法

    公开(公告)号:US20100244760A1

    公开(公告)日:2010-09-30

    申请号:US12412053

    申请日:2009-03-26

    IPC分类号: H02P29/02 H02H9/08 G01R31/34

    摘要: Methods and systems are provided for detecting loss of isolation of a motor, connections, or phase cables while an AC motor is operating. The system includes a power supply that is substantially isolated from the ground or chassis having a power supply voltage, and a power inverter electrically coupled to the power supply. The power inverter is configured to provide AC current from the power supply in an AC phase at an AC terminal, with the phase having current at a fundamental frequency that controls the motor speed. An electric motor is electrically coupled to the AC terminal of the power inverter and has a chassis that is substantially electrically isolated from the AC terminal of the power inverter under normal operating conditions. A processor is configured to control the AC current provided by the power inverter. The processor is configured to receive a first voltage signal related to current flowing through a motor chassis. The first voltage signal includes a first component related to the fundamental frequency of the phases, and a second component related to the power supply voltage. The processor is further configured to filter the first voltage signal to attenuate the second component, to measure an amplitude of the first component, and to determine if an AC loss of isolation condition exists by comparing the amplitude of the first component to a fault value.

    摘要翻译: 提供了用于在AC电动机运行时检测电动机,连接或相位电缆的隔离损失的方法和系统。 该系统包括与具有电源电压的地面或底盘基本上隔离的电源,以及电耦合到电源的功率逆变器。 电力逆变器被配置为在AC端子处的AC相中提供来自电源的AC电流,其中相位具有控制电动机速度的基频的电流。 电动机电耦合到电力逆变器的AC端子,并且具有在正常操作条件下与电力逆变器的AC端子基本上电隔离的底盘。 处理器被配置为控制由电力逆变器提供的AC电流。 处理器被配置为接收与流过马达机箱的电流相关的第一电压信号。 第一电压信号包括与相的基频相关的第一分量和与电源电压有关的第二分量。 处理器还被配置为对第一电压信号进行滤波以衰减第二分量,以测量第一分量的振幅,并且通过将第一分量的幅度与故障值进行比较来确定是否存在隔离条件的AC损失。