A Voltage-supportive Controller for Ultra-fast Electric Vehicle Chargers in Islanded DC Microgrids

This paper presents a controller for fast and ultra-fast electric vehicle (EV) charging stations. Without affecting the efficiency, proposed enables charger to provide support interconnection voltage counter damp its transients. Existing solutions are either hardware-based such as using supercapacitors flywheels which increase cost bulkiness of station, or software-based $P/V$ droop methods still unable robust strong support. proposes an emulated supercapacitor concept in control system EV islanded DC microgrid. Thus, it converts from static load bus supportive load, leading reduced oscillations during single multiple operations, rides through provides supports extreme external disturbances. Detailed analysis design guidelines presented, effectiveness improved performance compared with conventional techniques shown different case studies.