In order to detect deterioration of a DC link capacitor between a DC source and an inverter load in an electric propulsion vehicle, capacitance of the link capacitor must be accurately measured during in-service use. A charge is established on the link capacitor. The capacitor is isolated from the source and the inverter load. A constant current circuit is activated to discharge the capacitor. A first voltage is measured across the capacitor at a first time during the discharging. A second voltage is measured across the capacitor at a second time during the discharging. A discharge current flowing from the capacitor is measured during the discharging. The capacitance is calculated in response to the discharge current multiplied by a ratio of a difference between the second and first times to a difference between the first and second voltages. The calculated capacitance is monitored for a decline indicative of a failure.


    Zugriff

    Download


    Exportieren, teilen und zitieren



    Titel :

    DC link capacitance measurement for electric vehicle drivetrain


    Beteiligte:
    GOVINDARAJ ARVIND (Autor:in) / LEI GUANGYIN (Autor:in) / BLACKMAN MANSUR A (Autor:in) / CHEN CHINGCHI (Autor:in)

    Erscheinungsdatum :

    2016-10-18


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

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



    Drivetrain for an electric vehicle and electric vehicle comprising such a drivetrain

    SYLVAIN MAYOUX | Europäisches Patentamt | 2024

    Freier Zugriff

    Electric vehicle drivetrain optimisation

    Eckert, Jony J. / Silva, Ludmila C.A. / Costa, Eduardo S. et al. | IET | 2017

    Freier Zugriff

    DRIVETRAIN FOR AN ELECTRIC VEHICLE AND ELECTRIC VEHICLE COMPRISING SUCH A DRIVETRAIN

    MAYOUX SYLVAIN | Europäisches Patentamt | 2024

    Freier Zugriff

    Transmission, hybrid drivetrain and drivetrain for an electric vehicle

    ZIEMER PETER / KUBERCZYK RAFFAEL / SIBLA CHRISTIAN et al. | Europäisches Patentamt | 2018

    Freier Zugriff

    Transmission, Hybrid Drivetrain and Drivetrain for an Electric Vehicle

    ZIEMER PETER / KUBERCZYK RAFFAEL / SIBLA CHRISTIAN et al. | Europäisches Patentamt | 2016

    Freier Zugriff