Studies Of Supercapacitor/Battery Hybrid Power Source And Its Control System

This work presents a supercapacitor/battery hybrid power source managed by adesigned control system for electric vehicles with regenerative (Regen) braking energyrecovery functionality. As a main power source, a module of lithium-ion battery (LIB) isused to furnish energy demand of the load at long time course, and to charge asupercapacitor (SC) module. The SC module is designed to satisfy high power demand atshort time course. Pulse current load test, Pulse Power Characterization (PPC) test,Dynamic Stress Test (DST) and Federal Urban Driving Schedule (FUDS) test are carriedout to verify the effectiveness of the hybrid power system. The functionality of the systemis further testified by using a motor as the load to simulate running conditions of electricvehicle including starting, cruising, accelerating and Regen braking schemes. In addition,the results of the Regen braking are satisfying.