Detection of and response to second leakage detection circuit

    公开(公告)号:US09702917B2

    公开(公告)日:2017-07-11

    申请号:US14307487

    申请日:2014-06-17

    CPC classification number: G01R31/006 G01R31/025

    Abstract: A system includes an isolation detection unit (IDU) having a first leakage detection circuit and being configured to determine an isolation characteristic for a voltage bus; and a circuit detection and response unit (CDRU) configured to determine whether the first leakage detection circuit is coupled to a second leakage detection circuit by a common ground. The CDRU can use a change in isolation characteristic of the voltage bus to determine whether a second detection circuit is coupled, and can characterize a coupled circuit. IDU operation and fault detection thresholds can be altered to mitigate confounding effects caused by simultaneous operation of both circuits. A system can be disposed at an electric vehicle to detect coupling of a detection circuit at a charging apparatus, or disposed at a charging apparatus to detect coupling of a leakage detection circuit at an electric vehicle.

    Detection of and Response to Second Leakage Detection Circuit
    6.
    发明申请
    Detection of and Response to Second Leakage Detection Circuit 有权
    检测和响应第二泄漏检测电路

    公开(公告)号:US20150362543A1

    公开(公告)日:2015-12-17

    申请号:US14307487

    申请日:2014-06-17

    CPC classification number: G01R31/006 G01R31/025

    Abstract: A system includes an isolation detection unit (IDU) having a first leakage detection circuit and being configured to determine an isolation characteristic for a voltage bus; and a circuit detection and response unit (CDRU) configured to determine whether the first leakage detection circuit is coupled to a second leakage detection circuit by a common ground. The CDRU can use a change in isolation characteristic of the voltage bus to determine whether a second detection circuit is coupled, and can characterize a coupled circuit. IDU operation and fault detection thresholds can be altered to mitigate confounding effects caused by simultaneous operation of both circuits. A system can be disposed at an electric vehicle to detect coupling of a detection circuit at a charging apparatus, or disposed at a charging apparatus to detect coupling of a leakage detection circuit at an electric vehicle.

    Abstract translation: 一种系统包括具有第一泄漏检测电路并被配置为确定电压总线的隔离特性的隔离检测单元(IDU); 以及电路检测和响应单元(CDRU),其被配置为确定所述第一泄漏检测电路是否通过公共接地耦合到第二泄漏检测电路。 CDRU可以使用电压总线的隔离特性的改变来确定第二检测电路是否耦合,并且可以表征耦合电路。 可以更改IDU操作和故障检测阈值,以减轻由两个电路的同时操作引起的混淆效应。 系统可以设置在电动车辆上以检测充电装置处的检测电路的耦合,或者设置在充电装置处,以检测电动车辆的泄漏检测电路的耦合。

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