A control system for controlling a vehicle charger including a power factor correction (PFC) circuit includes a resistance measuring circuit configured to make first resistance measurements at a positive DC terminal of the PFC circuit and second resistance measurements at a negative DC terminal of the PFC circuit. The control system includes a controller configured to, in response to the PFC circuit being in a selected switching state, compare one of the first resistance measurements to a positive threshold. The one of the first resistance measurements is made while the PFC circuit is in the selected switching state. The positive threshold is based on a first parallel combination of one or more resistances corresponding to the selected switching state of the PFC circuit. If the one of the first resistance measurements is less than the positive threshold, the controller disables operation of the vehicle charger.
Residual Current Detection for Vehicle Onboard Charger Using Isolation Resistance Monitoring Circuitry
07.11.2024
Patent
Elektronische Ressource
Englisch
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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