Performance Evaluation of Cascaded Converter-Based Hybrid Power Supply for PV-Assisted Light Electric Vehicle

The lighter power electronic interface for PV, battery, and super capacitor-based power supply to PV-assisted light EV greatly enhances the drive system's efficiency. This paper presents a novel cascaded converter-based PV- Battery-Super capacitor power supply interface with reduced battery and supercapacitor power converters, which is controlled through model-referred Duty estimation-based PI control for maximum power absorption from PV source, accurate current reference generation for battery and super capacitor, faster current Control, and accurate DC bus regulation. The proposed converter interface and Control simulation were carried out in MATLAB/SIMULINK environment. Simulation results proved the robustness of Control with 2.7 percent regulation in DC bus voltage, 0.05 sec and 5 sec transient settlement times for supercapacitor and battery bus voltages.