A ground-fault determination apparatus, which is for use in a vehicle power supply system including a DC power source and a DC supply circuit, includes an acquisition unit that applies an AC signal to the DC supply circuit through a series connection of a resistor and a capacitor to acquire a peak value of the AC signal divided by a resistance of the resistor and an insulation resistance of the DC supply circuit, a ground-fault determination unit that determines presence of a ground-fault based on a comparison between a determination threshold and the peak value, an estimation unit that estimates at least one of a maximum output voltage of the DC supply circuit and a common capacitance between the DC supply circuit and a vehicle body, and a setting unit that sets the determination threshold based on at least one of the maximum output voltage and the common capacitance.


    Access

    Download


    Export, share and cite



    Title :

    Ground-fault determination apparatus


    Contributors:

    Publication date :

    2018-11-06


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



    GROUND FAULT DETERMINATION SYSTEM AND GROUND FAULT DETERMINATION METHOD

    KITAMOTO RYOTA | European Patent Office | 2023

    Free access

    GROUND FAULT DETERMINATION DEVICE

    MIZOGUCHI HAYATO / ITO MASAYA | European Patent Office | 2015

    Free access

    GROUND FAULT DETERMINATION DEVICE

    MIZOGUCHI HAYATO / ITO MASAYA | European Patent Office | 2015

    Free access

    GROUND FAULT DETERMINATION DEVICE

    MIZOGUCHI HAYATO / MAEHARA TSUNEO | European Patent Office | 2015

    Free access

    Ground fault detection apparatus

    KAWAMURA YOSHIHIRO | European Patent Office | 2020

    Free access