A method performed by a control unit for detecting performance deterioration of components comprised in a coupling chain connecting a power grid to a vehicle, wherein the coupling chain at least comprises a supply unit configured to charge the vehicle, the method comprising measuring amplitude of a first voltage at a first point of the coupling chain, measuring amplitude of a second voltage at a second point of the coupling chain, measuring a first current flowing through the coupling chain, estimating an impedance using the measured amplitude of the first voltage, the amplitude of the second voltage and the first current, detecting that performance deterioration of components comprised in the coupling chain has occurred by comparing the estimated impedance to a reference impedance, wherein the deterioration of components is detected if the estimated impedance is equal to or greater than the reference impedance.
METHOD FOR DETECTING PERFORMANCE DETERIORATION OF COMPONENTS
2022-09-15
Patent
Elektronische Ressource
Englisch
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