Overcurrent Protection Circuit for Engine Starting Mode of Range Extended Electric Vehicles.

Apart from the various technical issues, voltage and current spikes have always been the challenges of vehicular circuit designers. This paper presents a protection scheme against the possible damaging effects of an overcurrent phenomenon. The proposed circuit is capable of continuously measuring the magnitude of phase current through the motor windings, and compares the same with the predefined reference current. Depending on the comparison, it generates a signal and sends the same to the microcontroller and the dedicated IR3230 Brushless DC controller for protection. The functionality of the proposed scheme was supported with experimental validations. [ABSTRACT FROM AUTHOR]